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Early detection of nitrogen deficiency in wheat at different times of N application by using spectral reflectance of crop canopy
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: P. Shaker --- Department of Soil Science, South Africa P.S. Fouché --- Department of Soil Science, South AfricaPhysiological changes resulting from nitrogen limitations can be translated into clear spectral differences between treatments, demonstrating the relationship between leaf reflectance and leaf chlorophyll and nitrogen concentrations. A wheat trial was conducted in which nitrogen (N) was applied in the... -
A new species of electric ray of the genus Narcine Henle, 1834 from the South-Western Indian Ocean (Chondrichthyes: Torpediniformes: Narcinidae)
Item type: Journal Article • Journal: South African Journal of Marine Science • Authors: M. R. de Carvalho B. Séret L. J. V. CompagnoA new species of electric ray of the genus Narcine Henle, 1834 is described from seven specimens collected from two localities off the western coast of Madagascar, in the Moçambique Channel. Narcine insolita, sp. nov. is distinguished from all other... -
NUTRIENTS IN AQUATIC ECOSYSTEMS: AN INTRODUCTION TO SIMILARITIES BETWEEN FRESHWATER AND MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P Chapman --- , South Africa JA Thornton --- , South Africa -
NUTRIENT CYCLING IN MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: P. Chapman --- , South AfricaThe overall cycles of nitrogen, phosphorus and silicon in the sea are described and compared. Data on the fluxes and rates of change between various pools of each nutrient are given, where available, and gaps in knowledge are pointed out... -
DECOMPOSITION IN PELAGIC MARINE ECOSYSTEMS
Item type: Journal Article • Journal: Journal of the Limnological Society of Southern Africa • Authors: M.I. Lucas --- Zoology Department, South AfricaDuring the decomposition of plant detritus, complex microbial successions develop which are dominated in the early stages by a number of distinct bacterial morphotypes. The microheterotrophic community rapidly becomes heterogenous and may include cyanobacteria, fungi, yeasts and bactivorous protozoans. -
THE DIURNAL MIXED LAYER IN LAKES AND OCEANS
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: JohnL. Largier --- Division of Earth, Marine and Atmospheric Science and Technology, South AfricaIn this review the current ideas on diurnal mixed layers are discussed with reference to several observations. Essentially, solar heating sets up a shallow thermocline which traps and concentrates further influx of heat and momentum in the top few metres... -
Predicting the extent of succulent thicket under current and future climate scenarios
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: MP Robertson AR PalmerUsing data from the distribution records of the facultative CAM succulent shrub Portulacaria afra, and high resolution climate response surfaces, we developed a spatially explicit model of the potential distribution of the species in the Thicket Biome of the eastern... -
A review of Jouanin's Petrel records in the eastern Indian Ocean
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: PeterG Ryan --- DST/NRF Centre of Excellence at the Percy FitzPatrick Institute, South Africa Barrie Rose --- , South Africa Michael Carter --- , Australia RohanH Clarke --- School of Biological Sciences, AustraliaJouanin's Petrel Bulweria fallax mainly occurs in the western Indian Ocean. Prior to our study there were only two records from east of 82° E. We show that small numbers of Jouanin's Petrels are regular visitors to the eastern Indian... -
Use of Plastic Drift Cards As Indicators of Possible Dispersal of Propagules of the Mangrove Avicennia Marina by Ocean Currents
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T. D. Steinke C. J. WardPlastic drift cards with the same buoyancy as propagules of Avicennia marina (Forssk.) Vierh. were used as an indicator of possible mangrove dispersal by ocean currents. The cards were dropped from an aircraft into the sea at the mouths of... -
Records of the Subantarctic Fur Seal Arctocephalus Tropicalis from Rodrigues and Mauritius, Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J. H. M. David L. SalmonA juvenile Subantarctic fur seal Arctocephalus tropicalis was recorded on the Indian Ocean island of Rodrigues and two were seen on Mauritius. These records are at least 2 500 km from the closest breeding colony (Amsterdam Island) and are the... -
Oceanic variability in the western sector of Algoa Bay, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: EH Schumann JRS Churchill HJ ZaaymanThe city of Port Elizabeth lies in the western sector of Algoa Bay, and a number of projects have investigated the oceanic temperature, salinity and current structures in the vicinity. This paper analyses past results, and then incorporates measurements of... -
Epipelagic siphonophores off the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thibault-Botha MJ GibbonsThis work represents the first systematic analysis of the common Siphonophora from the Agulhas Current (South-West Indian Ocean). A total of 56 species of siphonophores was collected from a series of three largely epipelagic cruises between Algoa Bay and the... -
Growth of alfonsino Beryx splendens Lowe 1834 in the South-West Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MTG Santamaría LJ López Abellán JF GonzálezAge and growth of alfonsino Beryx splendens from South-West Indian Ocean seamounts were studied based on whole otolith readings. Ages of the fish under study ranged between one year and 14 years (15.5–43.5cm fork length). Age distribution was related to... -
The 26 December 2004 Sumatra tsunami recorded on the coast of West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Joseph JT Odametey EK Nkebi A Pereira RG Prabhudesai P Mehra AB Rabinovich V Kumar S Prabhu-Desai P WoodworthAnalysis of sea-level data obtained from the Atlantic Global Sea Level Observing System (GLOSS) sea-level station at Takoradi, Ghana, West Africa, clearly reveals a tsunami signal associated with the Mw = 9.3 Sumatra earthquake of 26 December 2004 in the... -
First Lagrangian ROMS–IBM simulations indicate large losses of chokka squid Loligo reynaudii paralarvae from South Africa's Agulhas Bank
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MJ Roberts --- Department of Environmental Affairs, South Africa C Mullon --- , FrancePresent knowledge of ocean currents based on in situ observation and models suggests that passive biological material such as eggs and larvae can be advected offshore away from the Agulhas Bank, South Africa, and hence removed from the ecosystem on... -
Structure of a toothed cetacean community around a tropical island (Mayotte, Mozambique Channel)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Kiszka --- Observatoire des Mammifères Marins, Mayotte PJ Ersts --- , USA V Ridoux --- Observatoire des Mammifères Marins, MayotteWe describe the structure of a toothed cetacean community around the island of Mayotte (South-West Indian Ocean, 45°10′ E, 12°50′ S), using data collected from small boat-based surveys conducted between July 2004 and June 2006. In all, 16 odontocete species... -
Distribution and seasonality of cetaceans in tropical waters between Angola and the Gulf of Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CR Weir --- , UKThe species richness, spatial distribution, seasonality and interspecific associations of cetaceans in tropical oceanic waters between the Gulf of Guinea and Angola were examined using 5 905.3 h of dedicated survey effort collected from 13 platforms of opportunity (geophysical vessels)... -
Prey and seasonal abundance of killer whales at sub-Antarctic Marion Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RR Reisinger --- Mammal Research Institute, Department of Zoology and Entomology, South Africa PJN de Bruyn CA Tosh WC Oosthuizen NT Mufanadzo MN BesterThe diet of killer whales Orcinus orca was investigated from 48 predation events observed during 823 sightings at sub-Antarctic Marion Island between 2006 and 2009. From these events, there were 10 cases where prey could be identified. Killer whales fed... -
Noteworthy elasmobranch records from Oman
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Henderson --- Department of Marine Science and Fisheries, Sultanate of Oman AJ ReeveRecords of 11 elasmobranch species previously unreported from, or uncommon in, Omani waters are presented. Records new to Oman include Carcharhinus altimus, C. leiodon, Centrophorus isodon, Ctenacis fehlmanni, Himantura fai, Mobula eregoodootenke and Sphyrna zygaena, whereas noteworthy records of uncommon... -
Tube-forming polychaetes enhance invertebrate diversity and abundance in sandy sediments of Mozambique, Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MS Thomsen --- Marine Department, National Environmental Research Institute, Denmark MF Muth --- Department of Environmental Sciences, USA KJ McGlathery --- Department of Environmental Sciences, USAIn marine soft-bottom systems, polychaetes can increase habitat complexity by constructing rigid tubes (e.g. several onuphid species) that contrast with surrounding topographically flat sediments. These structures can provide predation refuges and increase larval settlement and thereby increase the richness and... -
Observations of individual humpback whales utilising multiple migratory destinations in the south-western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PJ Ersts --- Center for Biodiversity and Conservation, USA C Pomilla --- Sackler Institute for Comparative Genomics, USA J Kiszka --- Observatoire des Mammifères Marins, France S Cerchio --- Sackler Institute for Comparative Genomics, USA HC Rosenbaum --- Center for Biodiversity and Conservation, USA M Vély --- , France Y Razafindrakoto --- Madagascar Country Program, Madagascar JA Loo --- Sackler Institute for Comparative Genomics, USA MS Leslie --- Sackler Institute for Comparative Genomics, USA M Avolio --- Barnard College, USAMovements of humpback whales Megaptera novaeangliae among breeding regions within the southwestern Indian Ocean are poorly understood. Understanding the relationships among breeding regions is critical for effective conservation and management strategies. Through systematic comparisons of molecular genotypes and both systematic... -
Migrations of humpback whales past Cape Vidal, South Africa, and an estimate of the population increase rate (1988–2002)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Department of Oceanography, South Africa PB Best --- , South Africa MA Meÿer --- Department of Environmental Affairs, South AfricaShore-based surveys of migrating humpback whales Megaptera novaeangliae were undertaken from Cape Vidal, northern KwaZulu-Natal, South Africa, each year between 1988 and 1991, and in 2002. Daily observations of migrating whale groups were carried out from an approx. 60 m-high... -
Dugong abundance and distribution in the Bazaruto Archipelago, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Department of Oceanography, South Africa VG Cockcroft --- , South Africa AT Guissamulo --- , MozambiqueDespite the distribution of dugongs Dugong dugon ranging across nearshore waters of the tropical and subtropical regions of the Indian Ocean and western Pacific Ocean, their distribution in the western Indian Ocean is highly fragmented and appears to be declining... -
Cetacean research in the southern African subregion: a review of previous studies and current knowledge
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SH Elwen --- , South Africa KP Findlay --- Department of Oceanography, South Africa J Kiszka --- , France CR Weir --- , UKCetacean research, in terms of the number of papers, and areas for which data are available, has expanded considerably in the southern African subregion in the past decade, especially in the South-West Indian Ocean. We review cetacean research within this... -
Baseline assessment of high-latitude coral reef fish communities in southern Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Floros --- , South Africa MH Schleyer --- , South Africa JQ Maggs --- , South Africa L Celliers --- , South AfricaThe Western Indian Ocean (WIO) is a region where detailed coral reef fish research has been relatively limited. This study constitutes an assessment of the fish communities of seven southern African high-latitude coral reefs. The aim was to provide ichthyological... -
St Helena Bay (southern Benguela) then and now: muted climate signals, large human impact
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Hutchings --- Department of Environmental Affairs, South Africa A Jarre --- Marine Research (MA-RE) Institute, South Africa T Lamont --- Department of Environmental Affairs, South Africa M van den Berg --- Department of Environmental Affairs, South Africa SP Kirkman --- Department of Environmental Affairs, South AfricaThe development of suitable reference states for ecosystem-based management requires documentation of changes in structure and functioning of marine ecosystems, including assessment of the relative importance of bottom-up and top-down processes as drivers of change. We used monitoring data available... -
First record of Mesoplodon densirostris (Blainville 1817) from continental East Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Valle --- Department of Biology and Biotechnology Charles Darwin, ItalyBlainville's beaked whale Mesoplodon densirostris is one of the most widely distributed members of the family Ziphiidae (the beaked whales). However, its exact distribution in many parts of the world remains unknown. On 24 November 2004, the partly skeletonised carcass... -
Mesoscale features and phytoplankton biomass at the GoodHope line in the Southern Ocean during austral summer
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Swart --- Southern Ocean Carbon and Climate Observatory, South Africa SJ Thomalla --- Southern Ocean Carbon and Climate Observatory, South Africa PMS Monteiro --- Southern Ocean Carbon and Climate Observatory, South Africa IJ Ansorge --- Department of Oceanography, Marine Research Institute, South AfricaTwo sets of high-resolution subsurface hydrographic and underway surface chlorophyll a (Chl a) measurements are used, in conjunction with satellite remotely sensed data, to investigate the upper layer oceanography (mesoscale features and mixed layer depth variability) and phytoplankton biomass at... -
The endangered status of dugongs Dugong dugon around Mayotte (East Africa, Mozambique Channel) assessed through interview surveys
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Pusineri --- , France J Kiszka --- Institut du Littoral et de l'Environnement, France M Quillard --- Direction de l'Environnement et du Développement Durable, France S Caceres --- , FranceThe status of dugongs Dugong dugon around Mayotte in the Mozambique Channel was assessed from interviews with artisanal fishers conducted in 2007, along with the collation of opportunistic sighting information from tour operators between 2002 and 2011. In all, 106... -
Reviewing evidence of marine ecosystem change off South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C L Moloney --- Department of Biological Sciences, South Africa S T Fennessy --- Oceanographic Research Institute, South Africa M J Gibbons --- Department of Biodiversity and Conservation Biology, South Africa A Roychoudhury --- Department of Earth Sciences, South Africa F A Shillington --- Marine Research Institute, South Africa B P von der Heyden --- Department of Earth Sciences, South Africa K Watermeyer --- Department of Biological Sciences, South AfricaRecent changes have been observed in South African marine ecosystems. The main pressures on these ecosystems are fishing, climate change, pollution, ocean acidification and mining. The best long-term datasets are for trends in fishing pressures but there are many gaps,... -
Composition of elasmobranch landings in Bahrain
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ABM Moore --- RSK Environment Ltd, UK R Peirce --- Shark Conservation Society, UKThe first detailed elasmobranch fisheries data for the Kingdom of Bahrain are presented, based on surveys of fish markets in April 2012. At least 25 species were recorded, including undescribed taxa. The milk shark Rhizoprionodon acutus was the most frequently... -
Non-random habitat use by coral reef fish recruits in Mafia Island Marine Park, Tanzania
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KC Garpe MC ÖhmanThe habitat use by nearly 3 000 reef fish recruits, comprising 56 taxa, at seven sites in Mafia Island Marine Park, Tanzania, were examined. The study was carried out following the 1998 global coral bleaching event and all sites but... -
Long current to nowhere? — Genetic connectivity of Jasus tristani populations in the southern Atlantic Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S von der Heyden JC Groeneveld CA MattheeThe commercially exploited spiny lobster Jasus tristani has a disjunct distribution in the southern Atlantic Ocean, with populations occurring at the Tristan da Cunha Archipelago, Gough Island and on Vema Seamount. A distance of 2 000km separates Vema and the... -
Achievements and lessons learned from the Benguela Environment, Fisheries, Interaction and Training (BENEFIT) research programme
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: I Hampton N SweijdThis paper considers the scientific achievements of the Benguela Environment, Fisheries, Interaction and Training (BENEFIT) Programme as reflected in 29 internally evaluated BENEFIT research projects carried out between 1998 and 2007 when the programme ended, and draws a number of... -
Extension of PIRATA in the tropical South-East Atlantic: an initial one-year experiment
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Rouault J Servain CJC Reason B Bourlès MJ Rouault N FauchereauThe Pilot (later termed Prediction) and Research Moored Array in the Tropical Atlantic (PIRATA) programme, developed as a multinational network by Brazil, France and the USA, has deployed and maintained an array of 17 Autonomous Temperature Line Acquisition Systems (ATLAS)... -
Size distributions and sex ratios of sharks caught by Oman's artisanal fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AC Henderson --- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultanate of Oman JL McIlwain --- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultanate of Oman HS Al-Oufi --- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultanate of Oman S Al-Sheile --- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultanate of Oman N Al-Abri --- Department of Marine Science and Fisheries, College of Agricultural and Marine Sciences, Sultanate of OmanOman's fishery resources are exploited by artisanal and industrial fisheries, but the former accounts for almost 90% of landings. Within the artisanal fishery, sharks have traditionally been harvested for their flesh, but the development of a valuable export market for... -
Why do we need to integrate population genetics into South African marine protected area planning?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S von der Heyden --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaSouth Africa is home to a wide variety of marine flora and fauna distributed over at least three biogeo-graphic provinces. Currently, 9% of the coastline is protected by ‘no-take’ marine protected areas (MPAs), but the distribution of MPAs is uneven... -
Yvette Christiansë's Oceanic Genealogies and the Colonial Archive: Castaways and Generations from Eastern Africa to the South Atlantic
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Meg Samuelson --- Department of English, South AfricaThis article traces tropes of dispersal and continuity in Yvette Christiansë oeuvre as it performs a genealogical enquiry through oceanic spaces and in and out of the colonial archive. Revolving respectively around St Helena and the Cape, both the poetry... -
“Dwelling-in-Travel”: Of Ships, Trains and Planes in M.G. Vassanji's Fiction
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Tina Steiner --- English Department, South AfricaM.G. Vassanji's prominent thematic concerns of movement, diaspora, memory, and the formation of migrant subjectivities can be traced and apprehended by paying close attention to the intersecting paths across the Indian Ocean, across railroad tracks into various East African territories... -
Estimation of size at first maturity in two South African coral species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PH Montoya-Maya --- Oceanographic Research Institute, Marine Parade, South Africa AHH Macdonald --- School of Life Sciences, South Africa MH Schleyer --- Oceanographic Research Institute, Marine Parade, South AfricaThe corals Acropora austera and Platygyra daedalea have been the subject of extensive reproductive and population genetic studies in the iSimangaliso Wetland Park (iSimangaliso), on the KwaZulu-Natal coast, eastern South Africa. Despite this, estimates of size at first maturity in... -
Insights into the feeding ecology of the Seychelles Black Parrot Coracopsis barklyi using two monitoring approaches
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Anna Reuleaux --- Seychelles Islands Foundation, Seychelles Heather Richards --- Seychelles Islands Foundation, Seychelles Terence Payet --- Seychelles Islands Foundation, Seychelles Pascal Villard --- Seychelles Islands Foundation, Seychelles Matthias Waltert --- Conservation Biology, Workgroup on Endangered Species, Germany Nancy Bunbury --- Seychelles Islands Foundation, SeychellesFeeding ecology is an important factor for the survival of a species and knowledge of its parameters is a prerequisite for successful conservation work. In this study we describe the feeding ecology of the endemic Seychelles Black Parrot Coracopsis barklyi... -
Food abundance explains the breeding season of a tropical shorebird, the Crab Plover Dromas ardeola
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Giuseppe De Marchi --- Dipartimento di Scienze della Terra e dell'Ambiente, Italy Giorgio Chiozzi --- Museo Civico di Storia Naturale, Italy Dawit Semere --- Research Division, Eritrea Yohannes Mebrahtu --- Research Division, Eritrea Farhad Hosseini Tayefeh --- Department of the Environment Provincial Office, Iran Mohammed Almalki --- Department of Biology, College of Science, Kingdom of Saudi Arabia Mauro Fasola --- Dipartimento di Scienze della Terra e dell'Ambiente, ItalyThe timing of breeding in birds is a life-history trait that generally depends on food availability, but other factors may play a role, particularly in tropical areas where food availability is less seasonal than in temperate or polar areas. We... -
Benthic macroinvertebrate assemblages in mangroves and open intertidal areas on the Dar es Salaam coast, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: C Rumisha --- Department of Biological Sciences, Tanzania H Shukuru --- Department of Biological Sciences, Tanzania J Lyimo --- Department of Biological Sciences, Tanzania JD Maganira --- Department of Biological Sciences, Tanzania A Nehemia --- Department of Biological Sciences, TanzaniaThe assemblages of benthic macroinvertebrates in mangroves and open intertidal areas of the Dar es Salaam coast, Tanzania, was investigated in 2013–2014, revealing 56 species. Higher density, species richness and diversity were recorded in open intertidal areas, compared to nearby... -
Kroyeria deetsi n.sp. (Kroyeriidae: Siphonostomatoida), a parasitic copepod infecting gills of spinner sharks, Carcharhinus brevipinna (Müller & Henle, 1839), in the Indian Ocean
Item type: Journal Article • Journal: African Zoology • Authors: Susan M. Dippenaar --- Department of ZoologyandBiology, South Africa George W. Benz --- Tennessee Aquarium and Southeast Aquatic Research Institute, U.S.A. Pieter A.S. Olivier --- Department of ZoologyandBiology, South AfricaKroyeria deetsi n.sp. (Kroyeriidae: Siphonostomatoida) is described from both sexes collected from the gills of spinner sharks, Carcharhinus brevipinna (Müller & Henle, 1839), captured in the Indian Ocean off the coast of South Africa. Kroyeriadeetsi n.sp. can easily be distinguished... -
Pelagic eggs of marine fishes from Park Rynie, KwaZulu-Natal, South Africa: seasonal spawning patterns of the three most common species
Item type: Journal Article • Journal: African Zoology • Authors: A.D. Connell --- Environmentek, South AfricaFor the period 1987 to 1998, pelagic eggs of marine fishes were collected from shelf waters at Park Rynie on the KwaZulu-Natal south coast. The three most numerous eggs collected were those of the mackerel Scomber japonicus,the sardine Sardinops sagax... -
Spatio-temporal patterns of coral recruitment at Vamizi Island, Quirimbas Archipelago, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Sola --- School of Life Sciences, South Africa I Marques da Silva --- Faculdade de Ciências Naturais, Moçambique D Glassom --- School of Life Sciences, South AfricaSpatial and temporal patterns of recruitment of reef corals were assessed for the first time in Mozambique by deploying settlement plates at various spatio-temporal scales between October 2012 and October 2013. The abundance of juvenile corals (5−50 mm in diameter) was... -
Population density of the Réunion Grey White-eye Zosterops borbonicus within the summit ecosystems of Réunion, Mascarene Islands
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Joris AM Bertrand --- Laboratoire Évolution et Diversité Biologique, France Yann XC Bourgeois --- Laboratoire Évolution et Diversité Biologique, France Christophe Thébaud --- Laboratoire Évolution et Diversité Biologique, FranceAssessing population density is crucial for studying the ecology and evolutionary biology of species as well as for conservation purposes. Here we used point count methods to infer population density in a single-island endemic passerine bird, the Réunion Grey White-eye... -
Spatial characterisation of the Benguela ecosystem for ecosystem-based management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Blamey --- Marine Research Institute, South Africa T Lamont --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa JG Field --- Marine Research Institute, South Africa G Bianchi --- Food and Agriculture Organization, Italy JA Huggett --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa L Hutchings --- Marine Research Institute, South Africa J Jackson-Veitch --- Marine Research Institute, South Africa A Jarre --- Marine Research Institute, South Africa C Lett --- Institut de Recherche pour le Développement [IRD], UMR MARBEC 248, France MR Lipiński --- Department of Ichthyology and Fisheries Science, South Africa SW Mafwila --- Department of Fisheries and Aquatic Sciences, Namibia MC Pfaff --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa T Samaai --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa LJ Shannon --- Marine Research Institute, South Africa Y-J Shin --- Marine Research Institute, South Africa CD van der Lingen --- Marine Research Institute, South Africa D Yemane --- Marine Research Institute, South AfricaThe three countries of the Benguela Current Large Marine Ecosystem (BCLME), namely Angola, Namibia and South Africa, have committed to implementing ecosystem-based management (EBM) including an ecosystem approach to fisheries (EAF) in the region, to put in practice the principles... -
Annual cycle of the upper-ocean circulation and properties in the tropical western Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Manyilizu --- Department of Oceanography, South Africa P Penven --- Ifremer, Univ. Brest, CNRS, IRD, Laboratoire dʹOcéanographie Physique et Spatiale (LOPS), France CJC Reason --- Department of Oceanography, South AfricaA regional ocean model was used to simulate the annual cycle of the upper-ocean dynamics and its influence on ocean properties in the tropical western Indian Ocean. Surface winds and heat fluxes from the National Centers for Environmental Prediction (NCEP)... -
A brief overview of the ACEP project: Ecosystem Processes in the KwaZulu-Natal Bight
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: ST Fennessy --- Oceanographic Research Institute, South Africa MJ Roberts --- Branch: Oceans and Coasts, South Africa AW Paterson --- South African Institute for Aquatic Biodiversity, South AfricaThis introductory paper lays the basis for this supplementary issue by briefly presenting the state of knowledge on the KwaZulu-Natal (KZN) Bight at the start of this multi-disciplinary, multi-institutional, ship-based research project that ran from 2009 to 2013. The rationale... -
Distribution of calcareous nannoplankton in surface sediments along the northern KwaZulu-Natal Bight, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MN Ovechkina --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South Africa MB Mostovski --- School of Life Sciences, South Africa R Uken --- Geological Sciences, School of Agricultural, Earth and Environmental Sciences, South AfricaThe coccolith assemblages from seafloor sediments over the inner shelf in the northern region of the KwaZulu- Natal Bight on the east coast of South Africa were identified and their distribution determined. In all, 29 Recent species and taxonomic groups,... -
Blue whales Balaenoptera musculus in offshore waters of Kenya
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Barber --- Gardline Environmental Ltd, UK I Sikora --- Gardline Environmental Ltd, UK M Nimak-Wood --- Gardline Environmental Ltd, UKObservations of blue whales were made in Kenyan offshore waters during a seismic survey from September 2014 to January 2015. These represent the first live at-sea sightings of blue whales reported from Kenyan waters. All 30 sightings occurred between September... -
Distribution and seasonal abundance of large cetaceans in the Durban whaling grounds off KwaZulu-Natal, South Africa, 1972–1975
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KP Findlay --- Mammal Research Institute Whale Unit, University of Pretoria, South Africa PB Best --- Mammal Research Institute Whale Unit, University of Pretoria, South AfricaDaily charts of the aerial search effort (432 206 nautical miles) of the Union Whaling Company and 1 099 sightings of 10 497 whales were available from 628 flights off Durban between 1972 and 1975. Densities of whales were analysed... -
Contrasting hydrography and phytoplankton distribution in the upper layers of cyclonic eddies in the Mozambique Basin and Mozambique Channel
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Lamont --- Branch: Oceans and Coasts, Department of Environmental Affairs, South Africa RG Barlow --- Marine Research Institute and Department of Oceanography, South AfricaHydrographic data collected in cyclonic eddies in the Mozambique Channel and Basin revealed notable differences in temperature and salinity at a depth of 100 m, the upper mixed layer, the nitracline depths, and vertical distribution of chlorophyll-a (Chl-a). Differences in... -
Two cases of probable hybridisation between the pufferfishes Arothron meleagris (Anonymous 1798) and A. nigropunctatus (Bloch and Schneider 1801) on a fringing reef at Réunion Island
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Bourjon --- Les Sentinelles du Récif, réseau d’observateurs volontaires de la Réserve Naturelle Marine de La Réunion [‘Sentinels of the Reef’, Volunteer Observers Network of the Réunion Marine Park] (GIP–RNMR), Réunion Island B Chanet --- Institut de Systématique, FranceTwo individuals displaying mixed features of the colour patterns distinctive of Arothron meleagris and A. nigropunctatus were observed on the fringing reef at Réunion Island, between September 2012 and August 2013. Because many hybrid fish have been first identified through... -
Reflection on the first five years of South Africa’s Acoustic Tracking Array Platform (ATAP): status, challenges and opportunities
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PD Cowley --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa RH Bennett --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa A-R Childs --- Department of Ichthyology and Fisheries Science, South Africa TS Murray --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaThe Acoustic Tracking Array Platform (ATAP) is a marine science programme that monitors the movements and migrations of inshore marine animals along the South African coastline. Acoustically tagged animals are monitored by an expanded network of approximately 100 automated data-logging... -
Transport and transformation of surface water masses across the Mascarene Plateau during the Northeast Monsoon season
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: P Vianello --- Nansen-Tutu Centre for Marine Environmental Research, South Africa IJ Ansorge --- Department of Oceanography, Marine Research Institute, South Africa M Rouault --- Nansen-Tutu Centre for Marine Environmental Research, South Africa M Ostrowski --- Institute of Marine Research, NorwayThe Mascarene Plateau lies in the south-west Indian Ocean between the islands of Mauritius and the Seychelles Bank, and is characterised by a series of shallow banks separated by deep (>1 000 m), narrow channels. The plateau acts as an... -
Comparative genetic structure in two high-dispersal prawn species from the south-west Indian Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: TK Mkare --- Kenya Marine and Fisheries Research Institute, Kenya JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa PR Teske --- Centre for Ecological Genomics and Wildlife Conservation, Department of Zoology, South Africa CA Matthee --- Evolutionary Genomics Group, Department of Botany and Zoology, South AfricaThe penaeid prawns Fenneropenaeus indicus and Metapenaeus monoceros support shallow-water prawn fisheries in the south-west Indian Ocean. They are sympatric and have similar life histories, including developmental stages that depend on estuarine and marine habitats and a short dispersal duration... -
First insights on spatial and temporal distribution patterns of humpback whales in the breeding ground at Sainte Marie Channel, Madagascar
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Trudelle --- Bioacoustics Team, France J-B Charrassin --- Sorbonne Universités (UPMC, Univ. Paris 06) – CNRS-IRD-MNHN, LOCEAN-IPSL, France A Saloma --- Cétamada, Port Barachois, Madagascar S Pous --- Sorbonne Universités (UPMC, Univ. Paris 06) – CNRS-IRD-MNHN, LOCEAN-IPSL, France A Kretzschmar --- Biostatistiques et Processus Spatiaux (BioSP), France O Adam --- Bioacoustics Team, FranceThe Sainte Marie Channel on the northeast coast of Madagascar is an important breeding ground for humpback whales; the first observation of birth was documented there, yet it has never been investigated for phenology and habitat use of humpback whales... -
Occurrence and ingestion of microplastics by zooplankton in Kenya's marine environment: first documented evidence
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Kosore --- Kenya Marine and Fisheries Research Institute, Kenya L Ojwang --- Pwani University, Kenya J Maghanga --- Taita Taveta University, Kenya J Kamau --- Kenya Marine and Fisheries Research Institute, Kenya A Kimeli --- Kenya Marine and Fisheries Research Institute, Kenya J Omukoto --- Kenya Marine and Fisheries Research Institute, Kenya N Ngisiag’e --- Kenya Marine and Fisheries Research Institute, Kenya J Mwaluma --- Kenya Marine and Fisheries Research Institute, Kenya H Ong’ada --- Kenya Marine and Fisheries Research Institute, Kenya C Magori --- Kenya Marine and Fisheries Research Institute, Kenya E Ndirui --- Kenya Marine and Fisheries Research Institute, KenyaMicroplastics can be ingested by marine organisms and may lead to negative impacts at the base of marine food chains. This study investigated the occurrence and composition of microplastics in the sea-surface water and sought evidence of ingestion by zooplankton... -
Migritude’s Decolonial Lessons
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Neelofer Qadir --- Department of English, USAIn this essay, I trace the deep time of the Indian Ocean through and against which Shailja Patel fabulates the notion of migritude and, in particular, what its valences are for solidarities between black and brown Kenyans and other south-south... -
In Search of Poem-Maps of the Swahili Seas: Three Sea Poems by Haji Gora Haji
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Yvonne Adhiambo Owuor --- Independent Scholar, KenyaTo what extent can a text borne in memory give texture, perspectives, meaning, dimensionality and sense to a place? Where is the locus of meaning in such a case? Can this locus be mapped? Questions about Swahili navigational poetry (poem-maps)... -
Of Oceanic Crossings and Discordant Cultural Adaptations in Post-apartheid Neo-slave Narration
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Serah Namulisa Kasembeli --- English Studies Department, South AfricaThis paper adopts the sea as a productive metaphor to interrogate colonial and apartheid constructions that silence African Indian Ocean cultures. It analyses Therese Benadé’s debut novel, Kites of Good Fortune (2004) to show that whereas the novel depicts the... -
Unique co-occurrence of two genera of cymothoid ectoparasitic isopods on the same individual fish host
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RL Welicky --- , South Africa NJ Smit --- , South AfricaParasitism of a host fish by a single species of cymothoid is regularly reported. For the first time on a temperate-fish host and in South African waters, we observed two species of cymothoids, the flesh-infesting Anilocra capensis and the tongue-infesting... -
Extreme significant wave height climate in the Gulf of Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AA Osinowo --- , Nigeria EC Okogbue --- , Nigeria EO Eresanya --- , Nigeria OS Akande --- , NigeriaThis article investigates spatio-temporal trends for different return periods of extreme significant wave height (SWH) in the Gulf of Guinea (GG), northeastern tropical Atlantic Ocean, based on a 37-year (1980–2016) wave hindcast. High-resolution reanalysis windfield datasets were used to force... -
Distribution and habitat use of Indo-Pacific bottlenose dolphins Tursiops aduncus along the south coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: OA Vargas-Fonseca --- , South Africa SP Kirkman --- , South Africa D Conry --- , South Africa GM Rishworth --- , South Africa V Cockcroft --- , South Africa PA Pistorius --- , South AfricaThe distribution and habitat use of the Indo-Pacific bottlenose dolphin Tursiops aduncus along the south coast of South Africa was investigated using bi-monthly boat-based surveys, from 2013 to 2016, over a distance of 145 km between the Goukamma and Tsitsikamma... -
Seasonal cycle of the salinity barrier layer revealed in the northeastern Gulf of Guinea
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AN Dossa --- International Chair in Mathematical Physics and Applications (ICPMA-UNESCO Chair), Benin CY Da-Allada --- International Chair in Mathematical Physics and Applications (ICPMA-UNESCO Chair), Benin G Herbert --- Institut de Recherche pour le Développement (IRD), Instrumentation, Moyens Analytiques, France B Bourlès --- Institut de Recherche pour le Développement (IRD), Instrumentation, Moyens Analytiques, FranceThe region located in the far northeast of the Gulf of Guinea (NEGG), eastern tropical Atlantic, remains poorly documented due to a lack of available in situ ocean data. Heavy rainfall and intense river discharges observed in this region induce... -
Reef fish and benthic community structures of the Santa Luzia Marine Reserve in the Cabo Verde islands, eastern central Atlantic Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: R Freitas --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde TC Mendes --- Departamento de Ecologia, Brazil C Almeida --- Faculdade de Engenharia e Ciências do Mar, República de Cabo Verde T Melo --- Biosfera I – Associação para Defesa do Meio Ambiente, República de Cabo Verde RC Villaça --- Departamento de Biologia Marinha, Brazil R Noguchi --- Programa de Engenharia Ambiental, Brazil SR Floeter --- Laboratório de Biogeografia e Macroecologia Marinha, Departamento de Ecologia e Zoologia, Brazil CA Rangel --- Centro Nacional de Avaliação da Biodiversidade e de Pesquisa e Conservação do Cerrado (CBC), Brazil CEL Ferreira --- Departamento de Biologia Marinha, BrazilUnderstanding ecological structures and the dynamics of reef fish assemblages is a fundamental step in current conservation biology. Patterns of abundance and biomass of reef fish communities of the tropical Cabo Verde Archipelago (eastern central Atlantic Ocean) have not been... -
Spatial distribution, seasonal abundance and exploitation status of shark species in Kenyan coastal waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BK Kiilu --- Kenya Fisheries Services, Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, Kenya RM Oddenyo --- Coral Reef Conservation Project, Kenya P Thoya --- Kenya Marine and Fisheries Research Institute, Kenya JM Njiru --- Kenya Marine and Fisheries Research Institute, KenyaEfforts to conserve and manage shark populations are often hampered by a lack of basic data, such as species-specific landings and distribution ranges. We bridge this gap in coastal East Africa by providing data on the distributions, catch rates, morphometrics,... -
New records of Planes crabs associated with sea turtles in Africa and adjacent waters
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JB Pfaller --- Caretta Research Project, United States AN Palau --- Archie Carr Center for Sea Turtle Research and the Department of Biology, United States PD Agamboué --- Marine Program, Gabon M Barret --- Kélonia, l’Observatoire des Tortues Marines, Réunion S Ciccione --- Kélonia, l’Observatoire des Tortues Marines, Réunion G Cliff --- KwaZulu-Natal Sharks Board, South Africa A Formia --- Marine Program, Gabon JC Manfoumbi --- Ibonga-ACPE [Association pour la Connaissance et la Protection de l’Environnement], Gabon A Marco --- Estación Biológica de Doñana, Consejo Superior de Investigaciones Científicas (EBD-CSIC), Spain G-P Sounguet --- Aventures Sans Frontières, Gabon AD Tucker --- Mote Marine Laboratory and Aquarium, United StatesCrabs of the genus Planes (family Grapsidae) live on floating debris and pelagic animals and spend their lives rafting at the surface of the open ocean. Among living substrata, Planes minutus is frequently found associated with sea turtles. However, prior... -
Patterns of juvenile reef-fish recruitment in Kenya’s shallow fringing- lagoon reefs
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: GM Okemwa --- Kenya Marine and Fisheries Research Institute, Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, Kenya EN Kimani --- Kenya Marine and Fisheries Research Institute, KenyaStudies to understand local-scale patterns in the recruitment of juvenile coral-reef fishes within the western Indian Ocean (WIO) region are few, yet such knowledge is important in fisheries management. Underwater visual census surveys were conducted at five shallow fringing-lagoon reef... -
Comparative trophic ecology of Cape anchovy Engraulis encrasicolus and Natal anchovy Stolephorus holodon off South Africa’s east coast
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Horton --- Department of Biological Sciences, South Africa CD van der Lingen --- Department of Biological Sciences, South AfricaThe distributional ranges of Cape anchovy Engraulis encrasicolus and Natal anchovy Stolephorus holodon presently overlap at their eastern and western extremes, respectively, off South Africa’s east coast. These species might become more strongly sympatric as a consequence of changed distributions... -
Preliminary observations of the reproductive biology of the Frenchman seabream Polysteganus baissaci (Sparidae) from Mauritius
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: L Caussy --- Department of Biosciences and Ocean Studies, Faculty of Science, Mauritius C Appadoo --- Department of Biosciences and Ocean Studies, Faculty of Science, Mauritius WHH Sauer --- Department of Ichthyology and Fisheries Science, South Africa WM Potts --- Department of Ichthyology and Fisheries Science, South AfricaThe Frenchman seabream Polysteganus baissaci is an important commercial fish species found on the slopes of the fishing banks of the exclusive economic zone of Mauritius. Exploitation of this species started in 2007, and it is targeted using hydraulic reels... -
Interactive effects of pH and temperature on native and alien mussels from the west coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MP Emanuel --- Marine Research Institute, Department of Biological Sciences, South Africa D Pillay --- Marine Research Institute, Department of Biological Sciences, South Africa M van der Merwe --- Centre for Higher Education Development, South Africa GM Branch --- Marine Research Institute, Department of Biological Sciences, South AfricaGlobal warming and ocean acidification influence marine calcifying organisms, particularly those with external shells. Among these, mussels may compensate for environmental changes by phenotypic plasticity, but this may entail trade-offs between shell deposition, growth and reproduction. We assessed main and... -
Contrasting patterns in the abundance of fish communities targeted by fishers on two coral reefs in southern Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Sancelme --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia J Goetze --- Global FinPrint Project, Australia S Jaquemet --- Université de La Réunion, UMR 9220 ENTROPIE [Tropical Marine Ecology Laboratory], Réunion MG Meekan --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, Australia A Flam --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique AM Watts --- Marine Megafauna Foundation, Marine Megafauna Research Center, Mozambique CW Speed --- Australian Institute of Marine Science, Indian Ocean Marine Research Centre, AustraliaCoastal populations of maritime countries in eastern Africa rely on fish as a primary source of protein, but baseline information on the abundance of fish communities on these coastlines is often lacking. We used baited remote underwater video stations to... -
All washed up: spatial and temporal variation in the wash-up and fate of chondrichthyan egg cases along a section of the Garden Route, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Schmöle --- , The Netherlands M Brown --- , South Africa M Witteveen --- , South AfricaWashed-up chondrichthyan egg cases were collected along three different sandy beaches around Plettenberg Bay, South Africa, between April 2016 and March 2017. GPS location was recorded upon collection, and, after being soaked in fresh water for 12 hours, egg cases... -
Beta diversity of pelagic assemblages at fish aggregating devices in the open ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: F Forget --- , France L Dagorn --- , France B Mérigot --- , France JC Gaertner --- , French Polynesia J Robinson --- , Seychelles PD Cowley --- , South Africa MS Adam --- , Maldives Y Rilwan --- , Maldives M Koonjul --- , Mauritius V Mangar --- , Mauritius M Taquet --- , French Polynesia F Ménard --- , FranceOwing to difficulties in accessing the vast open ocean, the beta (β) diversity of pelagic fish assemblages remains poorly studied. We investigated the relationship between assemblage similarity and geographical distance between anchored fish aggregating devices (FADs), sampled by standardised underwater... -
Latitudinal changes in siphonophore assemblages across the Atlantic sector of the Southern Ocean
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Kuyper --- , South Africa D Thibault --- , France MJ Gibbons --- , South AfricaSiphonophores are commonly considered to be useful indicators of water masses and water-mass movement, but their employment as such across the wider Southern Ocean has not so far been attempted. We redress this here using archived samples, collected during January–February... -
Lady Kennaway: A ship story
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Phindi Mnyaka --- , South AfricaMy paper is a meditation on the performativity of history writing and uses the case of the ship, Lady Kennaway, as a point of departure. Lady Kennaway was a 19th century ship whose last voyage included transporting young women to... -
A Cowrie’s Life: The São Bento and Transoceanic Trade in the Sixteenth Century
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Justine Wintjes --- , South AfricaA collection of money cowries (Monetaria moneta) was discovered in the early 1980s inside a bronze cannon salvaged from the wreck site of the São Bento (1554), at the mouth of the Mzikaba River, Eastern Cape, South Africa. Using an... -
Effects of nest management methods on hatching success and predation rates of hawksbill turtles on Cousine Island, Seychelles
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J Gane --- , South Africa CT Downs --- , South Africa I Olivier --- , South Africa M Brown --- , South AfricaSea turtle populations have declined globally and are of conservation concern. We investigated the effects of nest management methods on hatching success and egg/hatchling predation rates of hawksbill turtles Eretmochelys imbricata on Cousine Island, Seychelles. We determined the effectiveness of... -
Abundance and distribution of Antarctic blue whales Balaenoptera musculus intermedia off the Queen Maud Land coast of Antarctica
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: S Paarman --- , South Africa E Vermeulen --- , South Africa E Seyboth --- , South Africa M Thornton --- , South Africa K Findlay --- , South AfricaThe Antarctic blue whale Balaenoptera musculus intermedia was hunted to near extinction in the twentieth century. Current data on the abundance and distribution of the species are lacking owing to the difficulty and expense of surveys under adverse weather conditions... -
Characterising the seasonal cycle of wind forcing, surface circulation and temperature around the sub-Antarctic Prince Edward Islands
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Toolsee --- , South Africa T Lamont --- , South Africa M Rouault --- , South Africa I Ansorge --- , South AfricaLocated between the sub-Antarctic Front and the Antarctic Polar Front, the Prince Edward Islands (PEIs) provide an essential breeding ground for top predators and are an ideal location to investigate disturbances linked to climate change. This study provides the first... -
Large-scale movements and site fidelity of two bull sharks Carcharhinus leucas estimated from a double-tagging experiment at Réunion Island (southwest Indian Ocean)
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Soria --- , France Y Tremblay --- , France A Blaison --- , France F Forget --- , France E Crochelet --- , Réunion L Dagorn --- , FranceSince 2011, the mean number of bites per year by bull sharks Carcharhinus leucas has increased markedly at Réunion Island. To predict areas and periods of increased risk, we need to better understand the space-use dynamics of individual sharks. In... -
When cooling is worse than warming: investigations into the thermal tolerance of an endemic reef fish, Boopsoidea inornata
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: C Allison --- , South Africa C Muller --- , South Africa A-R Childs --- , South Africa W Froneman --- , South Africa LA Bailey --- , South Africa WM Potts --- , South AfricaRecent investigations suggest that global warming is likely to alter temperature regimes along the southeastern coastline of South Africa through the increased frequency of upwelling events. Identifying thermal thresholds is fundamental in predicting the response of marine ectotherms to rapidly... -
Trauma, History and Desire in the Indian Ocean Imaginary. A Reading of M.G. Vassanji’s The Book of Secrets as Material Culture
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Esther Pujolràs-Noguer --- , SpainWe can determine small truths about what happened in the past, but they coalesce into a large falsehood Jules David Prown ‘Trauma, History and Desire in the Indian Ocean Imaginary. A Reading of M.G. Vassanji’s The Book of Secrets as... -
The distribution of dinoflagellate cyst assemblages in recent sediments of the Oualidia Lagoon, Morocco, with a focus on toxic species
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K Chaira --- , Morocco H Rhinane --- , Morocco B Ennaffah --- , Morocco S Maimouni --- , Morocco R Sagou --- , Morocco S Loulad --- , Morocco A BenMhamed --- , Morocco A Agouzouk --- , Morocco S BenBrahim --- , Morocco E Masseret --- , France M Laabir --- , FranceHarmful algal blooms (HABs) are becoming widely distributed and more frequent, threatening socioecosystems and human health. We determined species composition, abundance and spatial distribution of dinoflagellate cysts in the upper sediment of the Oualidia Lagoon located on the Atlantic coast... -
The first report of Naobranchia cygniformis Hesse, 1863 (Copepoda: Lernaeopodidae) off South Africa, with a redescription of the adult female
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SM Dippenaar --- , South Africa MM Sebone --- , South AfricaNaobranchia cygniformis Hesse, 1863 is one of 21 accepted species of the genus Naobranchia, which is distinguished from other genera in the family Lernaeopodidae by the possession of ribbon-like maxillae. The original description of N. cygniformis lacked detail concerning the... -
Distribution and community structure of at-risk and Data Deficient elasmobranchs in Zavora Bay, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B O’Connor --- , The Netherlands N Cullain --- , United StatesPersistent threats from fishing pressure and increasing habitat degradation, as well as slow recovery rates resulting from K-selected life histories, are putting increasing numbers of elasmobranch species (sharks, rays and skates) at risk of extinction worldwide. Global declines in elasmobranch... -
Investigating the influence of the extreme Indian Ocean Dipole on the 2020 influx of Red-necked Phalaropes Phalaropus lobatus in Kenya
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Raphaël Nussbaumer --- , Kenya Mathieu Gravey --- , Switzerland Améline Nussbaumer --- , Kenya Colin Jackson --- , KenyaOcean currents have wide-ranging impacts on seabird movement and survival. By extension, the extreme oscillations they are subject to, such as extreme Indian Ocean Dipole (IOD) events, can also be expected to dramatically influence seabird populations. This study links the... -
Predicted future changes in ocean temperature and pH do not affect prey selection by the girdled dogwhelk Trochia cingulata
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Martin --- , South Africa S Clusella-Trullas --- , South Africa TB Robinson --- , South AfricaPredator–prey relationships can drive community dynamics in marine systems, but it remains unclear how future changes in seawater temperatures and pH will influence these relationships. This study assessed the effect of predicted future temperatures and pH on the prey choice... -
Swahili Seafarers’ Musings and Sensuous Seascapes in Yvonne Owuor’s The Dragonfly Sea
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Jauquelyne Kosgei --- , South AfricaThis paper provides an analysis of Yvonne Owuor’s The Dragonfly Sea (2019) with a focus on local knowledges of the sea that shore folk and seafarers from Pate Island on the Kenyan coast possess. Attention is paid to how these... -
Nematode community structure and distribution along the Kenyan continental shelf
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SM Hashim --- University of Nairobi, Kenya AWN Muthumbi --- University of Nairobi, Kenya JM Githaiga --- University of Nairobi, Kenya J Okondo --- Kenya Marine and Fisheries Research Institute (KMFRI), KenyaMeiofauna communities were analysed from samples collected at four stations on the Kenyan continental shelf (Shimoni, Kwale, Mombasa and Kilifi) during the maiden cruise of the RV Mtafiti, 12–21 December 2015. Nematodes were identified to genus level, and their distribution... -
Using research and development indicators to shape innovation in Mauritius
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: M. Madhou --- Mauritius Research and Innovation Council, Mauritius S. B. Moosun --- Mauritius Research and Innovation Council, Mauritius D. Naginlal-Modi Nagowah --- Mauritius Research and Innovation Council, MauritiusResearch and Development (R&D) measurements are widely used in the formulation of evidence-based policies to boost a country’s innovation performance. This paper showcases how traditional (Expenditure and Number of Researchers) and country specific R&D data were used for the first... -
Movement patterns and growth rate of Scotsman Polysteganus praeorbitalis (Sparidae) tagged in the Pondoland Marine Protected Area, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: BQ Mann --- Oceanographic Research Institute, South Africa WN Dalton --- Oceanographic Research Institute, South Africa GL Jordaan --- Oceanographic Research Institute, South Africa R Daly --- Oceanographic Research Institute, South AfricaA tag-recapture study was undertaken on Polysteganus praeorbitalis in the Pondoland Marine Protected Area (PMPA) on the east coast of South Africa. A total of 1 042 fish were tagged over a period of 16 years and 255 individuals (24.5%)... -
Wind- and eddy-driven upwelling over submarine canyons inshore of the northern Agulhas Current
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: G Rautenbach --- Nelson Mandela University, South Africa J Hermes --- , South Africa I Halo --- , South Africa T Morris --- , South Africa J Veitch --- , South AfricaThe iSimangaliso Wetland Park, located along the coastline of northern KwaZulu-Natal, hosts South Africa’s only subtropical coral reef system. Episodic upwelling events are observed inshore and at the heads of Diepgat, Leadsman and Leven canyons within the iSimangaliso Wetland Park... -
Representations of Indian Ocean Ecologies, Heritage and Kinship in Banaadiri Fishing Poems and Owuor's The Dragonfly Sea
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Ayan Salaad --- University of Southampton, UKThis article brings Yvonne Owuor’s 2019 novel The Dragonfly Sea into conversation with nine Banaadiri fishing poems called geeraarro, a form of classical Somali oral poetry in the maanso category. I explore the ways in which ideas of labour, kinship,... -
The road towards effective governance and management of marine protected areas in South Africa: evolving policies, paradigms and processes
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: SP Kirkman --- , South Africa P Kowalski --- , South Africa BQ Mann --- Oceanographic Research Institute (ORI), South Africa GM Branch --- University of Cape Town, South Africa MG van der Bank --- South African National Biodiversity Institute (SANBI), South Africa KJ Sink --- Institute for Coastal and Marine Research, Nelson Mandela University, South Africa P Fielding --- , South Africa JB Mann-Lang --- Oceanographic Research Institute (ORI), South Africa MC Pfaff --- University of Cape Town, South Africa D Kotsedi --- , South Africa R Adams --- , South Africa S Dlulisa --- , South Africa SL Petersen --- , MadagascarThe efficacy of marine protected areas (MPAs) depends on their governance and management. We review their history in South Africa and recognise four periods. Period 1 (1964–1994) provided initial protection but was based on exclusionary, preservationist policies, was ad hoc... -
Status of gender equality in ocean research, conservation and management institutions and organisations in Kenya
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RA Ojwala --- WMU–Sasakawa Global Ocean Institute, World Maritime University, SwedenGender equality is key to achieving the objectives of the United Nation’s Decade of Ocean Science for Sustainable Development. In patriarchal societies, men’s dominance has long overshadowed women’s participation in science-related fields, including ocean science. The lack of gender-disaggregated data... -
Sensitivity simulation of sea surface temperature variability in coastal waters off East Africa in relation to the Indian Ocean Dipole
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MC Manyilizu --- The University of Dodoma, TanzaniaEast African coastal waters in the tropical western Indian Ocean experience strong seasonality which varies yearly, leading to the establishment of a prominent interannual Indian Ocean Dipole (IOD). This has a significant influence on regional and global socio-economic, climatic and... -
Assessing the influence of the El Niño–Southern Oscillation phase on rainfall variability in the Gauteng province of South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: --- University of the Free State, South Africa --- University of the Free State, South AfricaSouth Africa is subject to large rainfall variability, with El Niño–Southern Oscillation (ENSO) being the most important driver across the summer rainfall region. The aim of this study was to relate ENSO phase to historical rainfall variability over the densely... -
Effect of rotational harvesting on the size composition of Cape rock oysters Striostrea margaritacea on the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: E Steyn --- Oceanographic Research Institute, South Africa JC Groeneveld --- Oceanographic Research Institute, South Africa J Santos --- Norwegian College of Fishery Science, Uit – The Arctic University of Norway, NorwayA commercial fishery for the Cape rock oyster Striostrea margaritacea along the north coast of KwaZulu-Natal, South Africa (western Indian Ocean), follows a 4-year rotational cycle, with each harvest year followed by 3 fallow years across four harvest zones. We... -
Marine macroalgae of the Agulhas Marine Province of South Africa: biodiversity, exploitation and potential for aquaculture
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JJ Bolton --- University of Cape Town, South Africa CD McQuaid --- Rhodes University, South AfricaThe Agulhas Marine Province (AMP) extends along most of the south coast of South Africa, from Cape Agulhas to the vicinity of the Mbashe River mouth in the Eastern Cape Province, and has its own distinctive warm-temperate seaweed flora, with... -
‘Bahari Imekufa, The Sea is Dead’: Local Perceptions of Ocean Health and Ocean Wealth among Fishers on the Kenyan Coast
Item type: Journal Article • Journal: Eastern African Literary and Cultural Studies • Authors: Jacky Kosgei --- WiSER, University of the Witwatersrand, South AfricaUsing narratives that I recorded in June/July 2021 on Kenya’s south coast with fishers belonging to three different generations, this paper provides insights into local articulations of changes that have happened in the sea over time. These changes — which... -
Spatial patterns and environmental drivers of demersal fish assemblages in the Swartkops and Sundays estuarine to marine seascapes, South Africa
Item type: Journal Article • Journal: Anthropology Southern Africa • Authors: P Nodo --- South African Institute for Aquatic Biodiversity (SAIAB), South Africa AR Childs --- Rhodes University, South Africa P Pattrick --- Nelson Mandela University, South Africa NC James --- South African Institute for Aquatic Biodiversity (SAIAB), South AfricaEstuaries are often observed as the boundary between the ocean and the river, separating coastal environments, rather than being seen as a continuum. Owing to insufficient research on demersal fish communities across nearshore marine to estuarine habitats, particularly in South... -
Contrast in larval sensitivity to low pH in sea urchins from neighbouring seagrass meadows at Inhaca Island, Mozambique
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JA Duvane --- Eduardo Mondlane University, Mozambique D Cossa --- Eduardo Mondlane University, Mozambique DC de Abreu --- Eduardo Mondlane University, Mozambique M Mafambissa --- Eduardo Mondlane University, Mozambique MP Scarlet --- Eduardo Mondlane University, Mozambique A Macia --- Eduardo Mondlane University, Mozambique S Dupont --- University of Gothenburg, SwedenOcean acidification presents a major threat to marine life, and a large body of evidence has documented its negative effects on various marine species and ecosystems. Recent meta-analyses highlight the key role of local adaptation and have linked species’ sensitivity... -
Long-term interannual temperature variability across the KwaZulu-Natal Bight as a technique for monitoring the complex uThukela Marine Protected Area, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Ramsarup --- University of Cape Town, South Africa T Morris --- , South Africa J Hermes --- University of Cape Town, South Africa M Dicken --- Institution for Coastal and Marine Research, Ocean Sciences Campus, Nelson Mandela University, South AfricaThe uThukela Marine Protected Area (MPA), situated on the continental shelf of the KwaZulu-Natal (KZN) Bight on the northeastern coast of South Africa, has been identified as a vital ecological region. Knowledge of the oceanographic dynamics in the region is... -
Strengthening the DNA barcode reference library for marine copepods in South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: A Rawoot --- University of the Western Cape, South Africa A Govender --- Oceanographic Research Institute (ORI), South Africa JC Groeneveld --- Oceanographic Research Institute (ORI), South Africa S Willows-Munro --- University of KwaZulu-Natal, South Africa R Cedras --- , South AfricaDNA barcode reference libraries that link taxonomically verified species records to standardised barcode sequences form the basis for species identification using molecular methods. We conducted an integrated morphology and molecular study of marine copepods collected from the continental shelf of... -
Value-chain analysis of Kenya’s artisanal tuna fishery focusing on skipjack tuna Katsuwonus pelamis and kawakawa Euthynnus affinis
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: FA Mzingirwa --- Rhodes University, South Africa GM Okemwa --- Kenya Marine and Fisheries Research Institute (KMFRI), Kenya O Marcone --- , United Kingdom CS Bova --- Rhodes University, South Africa S Viana --- Rhodes University, South Africa WHH Sauer --- Rhodes University, South AfricaThis study investigates the value chain of Kenya’s artisanal tuna fishery targeting skipjack tuna Katsuwonus pelamis and kawakawa Euthynnus affinis. The study used an integrated approach combining a questionnaire survey and catch assessment data at four landing sites along the... -
A shelf-scale assessment of GLORYS and BRAN ocean reanalysis model outputs for the southern Benguela Upwelling System
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: AM Kupczyk --- Fisheries and the Environment (DFFE), South Africa T Lamont --- Fisheries and the Environment (DFFE), South Africa I Halo --- Fisheries and the Environment (DFFE), South Africa CS Russo --- Fisheries and the Environment (DFFE), South Africa T Rixen --- Institute for Geology, Universität Hamburg, Germany N Lahajnar --- Institute for Geology, Universität Hamburg, GermanyThe Benguela Upwelling System, with its high variability and productivity, is challenging to monitor owing to limited in situ ocean observations. Researchers therefore often use ocean reanalysis products to simulate oceanographic conditions. We evaluated the performance of the GLORYS and... -
Rapid assessment of the Seychelles octopus (Octopus cyanea) fishery value chain: insights for sustainable management
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: J McCafferty --- Rhodes University, South Africa A Ebrahim --- , Seychelles WHH Sauer --- Rhodes University, South Africa R Wright --- , South Africa A Vidot --- , Seychelles V Schmidt --- Food and Agriculture Organization of the United Nations (FAO), ItalyThe octopus fishery for Octopus cyanea in Seychelles plays an important role in local cuisine, culture and tourism, yet it is unmanaged unlike other octopus fisheries in the western Indian Ocean region. We conducted a rapid assessment of the octopus... -
Understanding the distribution and densities of ghost crabs (Ocypode spp.) to improve management of hawksbill turtle Eretmochelys imbricata nesting sites
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: T Godding --- , Seychelles S Evans --- , Seychelles M Brown --- School of Life Sciences, University of KwaZulu-Natal, South AfricaPredation on sea turtle nests is a natural occurrence at nesting beaches worldwide, with various animals consuming the eggs and hatchlings as part of the ecosystem. Cousine Island in the Seychelles Archipelago is an important nesting site for the Critically... -
Using Digital Earth Africa to monitor chlorophyll-a concentration and detect harmful algal blooms in Suguti Bay, Lake Victoria, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JE Gimode --- Ardhi University, Tanzania AD Msusa --- Ardhi University, Tanzania Z Ngereja --- Ardhi University, TanzaniaLake Victoria is a vital source of drinking water for millions, necessitating continuous monitoring of chlorophyll-a (Chl-a) concentrations to assess its trophic status and support sustainable water resource management. This study aimed to provide a scalable, cost-effective alternative to traditional... -
Catch trends and population status of the leopard whipray Himantura leoparda (family Dasyatidae) off the east coast of South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: BQ Mann --- Oceanographic Research Institute (ORI), South Africa R Daly --- Oceanographic Research Institute (ORI), South Africa D Parker --- University of Queensland, Australia GL Jordaan --- Oceanographic Research Institute (ORI), South Africa G Cliff --- KwaZulu-Natal Sharks Board, South Africa N Nkabi --- KwaZulu-Natal Sharks Board, South Africa R Kyle --- South African Association for Marine Biological Research (SAAMBR), South Africa R Bennett --- Wildlife Conservation Society, South AfricaThe leopard whipray Himantura leoparda (family Dasyatidae) is globally assessed as Endangered on the IUCN Red List of Threatened Species owing to the species’ inherent vulnerability and declining population trends. In this study we assessed the population found off the... -
Growth potential and productivity of the green macroalgae Ulva reticulata in a sustainable farming system in a coastal lagoon at Bambous Virieux, Mauritius
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: N Nazurally --- Department of Agricultural and Food Science, University of Mauritius, Mauritius D Beehary-Panray --- Environmental Protection and Conservation Organisation (EPCO), Resilient Island Endeavour (RISE) Project, Mauritius EC Gatteschi --- Cooperazione Internazionale Sud Sud (CISS), Resilient Island Endeavour (RISE) Project, ItalyUlva reticulata is a fast-growing green macroalga with high bioremediation and economic potential. Cultivation of this seaweed at Bambous Virieux in southeast Mauritius was undertaken to evaluate its growth potential and biological feasibility in a tropical lagoon. Over a 30-day...