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Maasai Mara — an ecosystem under siege: an African case study on the societal dimension of rangeland conservation
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: John Waithaka'Let me assure you all that our commitment to the preservation of wildlife and the habitat in the Maasai Mara reserve is total. We do not deny that the reserve is of vital economic importance to us, but we also... -
The challenge of integrated rangeland monitoring: synthesis address
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: David WesternThe need to balance biodiversity conservation with sustainable development, though widely agreed upon, is elusive in practice. Human societies are increasingly disconnected from the ecosystems which support them. The loosening connection and growing scientific acceptance that ecosystems are complex, dynamic,... -
The effect of long-term fire treatments on invertebrates: results from experimental plots at Cathedral Peak, South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: C Uys M HamerThis study examined the impacts of different burning regimes (fire frequency and season) and fire history (time since last burn) on invertebrate morphospecies richness and abundance. The study was carried out in the Brotherton experimental plots at Cathedral Peak in... -
The effect of harvesting operations, slash management and fertilisation on the growth of a Eucalyptus clonal hybrid on a sandy soil in Zululand, South Africa
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: ColinW Smith Ben du ToitHarvesting operations during clearfelling and extraction of timber from commercial plantations result in many processes that may affect long-term site productivity such as soil compaction and residue manipulation. The objective of this work was to evaluate the effects of various... -
Potential environmental impacts associated with the proposed abstraction of water from the Okavango River in Namibia
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: P AshtonThe Namibian Department of Water Affairs has in the past faced considerable pressure to relieve the water shortages caused by recent droughts. One of the options considered in 1996, following poor runoff during the 1994/95 and 1995/96 seasons, was a... -
Zooplankton community changes in Nhlabane estuary, South Africa, induced by man-made structures and drought
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: HL JerlingThe Nhlabane estuary and coastal lake system has suffered a number of man-made impacts since 1977, when the lake and estuary were separated by the construction of a barrage. More recent man-made events included the construction of temporary sand walls,... -
The predatory impact of invasive alien smallmouth bass, Micropterus dolomieu (Teleostei: Centrarchidae), on indigenous fishes in a Cape Floristic Region mountain stream
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DarraghJ Woodford N Dean Impson JennyA Day I Roger BillsFish populations in the Rondegat River, a mountain stream in the Olifants-Doring system in the Cape Floristic Region, South Africa were surveyed to assess the impact of predatory alien invasive smallmouth bass Micropterus dolomieu (Lacepède) on the indigenous fishes. This... -
The effect of water hyacinth, Eichhornia crassipes (Martius) SolmsLaubach (Pontederiaceae), on benthic biodiversity in two impoundments on the New Year's River, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JohnM Midgley MartinP Hill MartinH VilletWater hyacinth, Eichhornia crassipes (Martius) Solms-Laubach (Pontederiaceae), forms thick mats that affect water resource utilisation, but little is known about its impacts on biodiversity in aquatic ecosystems. The benthic invertebrate community and algal biomass were sampled under water hyacinth mats... -
Fish breeding in, and juvenile recruitment to, the St Lucia Estuarine System under conditions of extended mouth closure and low lake levels
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Digby Cyrus Leon VivierOngoing drought conditions along the northern coast of KwaZulu-Natal resulted in the St Lucia Estuary mouth closing, and to evaporation leading to extremely low lake levels and the development of hypersaline conditions in most parts of the system. The mouth... -
Gill damage, metallothionein gene expression and metal accumulation in Tilapia sparrmanii from selected field sites at Rustenburg and Potchefstroom, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Daléne van Heerden Peet Jansen van Rensburg Mikko Nikinmaa André VoslooFish were collected from field sites in the mining and agricultural areas of Potchefstroom and Rustenburg, North-West Province, South Africa. Water and sediment samples from each site, together with fish muscle and gills, were analysed by Inductively Coupled Plasma Mass... -
Testing the applicability of the SASS5 scoring procedure for assessing wetland health: a case study in the KwaZulu-Natal midlands, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Rebecca Bowd DonovanC Kotze CraigD Morris NevilW QuinnA study was undertaken between 29th January and 17th February 2004 to test the applicability of the South African Scoring System Version 5 (SASS5) scoring and calculation procedure in nutrient-enriched palustrine wetlands in the midlands of KwaZulu-Natal, South Africa. Four... -
The distribution and relative abundance of stream fishes in the upper Manyame River, Zimbabwe, in relation to land use, pollution and exotic predators
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: B Gratwicke --- Department of Biological Sciences, Zimbabwe BE Marshall --- Department of Biological Sciences, Zimbabwe T Nhiwatiwa --- Department of Biological Sciences, ZimbabweA survey of the upper Manyame River catchment, middle Zambezi system, Zimbabwe, yielded a total of 22 fish species from 48 stations. The most widespread species (present at >20 stations) were Marcusenius macrolepidotus, Barbus paludinosus, Labeo cylindricus, Clarias gariepinus and... -
Ecological status and role of the Mfolozi–Msunduzi estuarine system within the iSimangaliso Wetland Park, a World Heritage Site on the south-east coast of South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DP Cyrus --- Coastal Research Unit of Zululand, Department of Zoology, South Africa L Vivier --- Coastal Research Unit of Zululand, Department of Zoology, South Africa RK Owen --- Coastal Research Unit of Zululand, Department of Zoology, South Africa HL Jerling --- Coastal Research Unit of Zululand, Department of Zoology, South AfricaThe original structure and functioning of the historical Mfolozi–St Lucia estuarine system are described and anthropogenic impacts, which resulted in the Mfolozi and Msunduzi rivers being separated from the St Lucia Estuary and having their own combined mouth to the... -
Human impacts on hydrological health and the provision of ecosystemservices: a case study of the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Sinchembe --- Department of Environmental Science, South Africa WN Ellery --- Department of Environmental Science, South AfricaWetland hydrological health and the provision of indirect ecosystem services in the eMthonjeni–Fairview Spring Wetland, Grahamstown, South Africa, were assessed in 2008, using the newly developed wetland assessment tools WET-Health and WET-EcoServices. Variation in health and ecosystem services were assessed... -
An ecosystem approach to fisheries in the southern Benguela context
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: K. L. Cochrane C. J. Augustyn A. C. Cockcroft J. H. M. David M. H. Griffiths J. C. Groeneveld M. R. Lipińnski M. J. Smale C. D. Smith R. J. Q. TarrThe 2001 Reykjavík Declaration on Responsible Fisheries in the Marine Ecosystem and the Plan of Implementation of the 2002 World Summit on Sustainable Development highlighted the need in fisheries to look beyond considering only the target species and to consider... -
Tropical South-East Atlantic response to ENSO as an ecosystem indicator for the southern Benguela
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MR JuryThe response of the tropical South-East Atlantic Ocean to the El Niño Southern Oscillation (ENSO) was studied for the period 1950–1999. Interaction between the ocean thermocline 'see-saw' and the overlying zonal wind circulation was examined. The two are closely linked... -
Reduced seabird night strikes and mortality in the Tristan rock lobster fishery
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: JP Glass --- Tristan Fisheries Department, Central South Atlantic Ocean PG Ryan --- Percy FitzPatrick Institute, DST/NRF Centre of Excellence, South AfricaThe main impact of the fishery for Tristan rock lobster Jasus tristani on seabirds at the Tristan archipelago and Gough Island is through night strikes, when petrels collide with a ship after being disorientated by its lights. Tristan fishery observers... -
Agriculture and Climate Change in Cameroon: An Assessment of Impacts and Adaptation Options
Item type: Journal Article • Journal: African Journal of Science, Technology, Innovation and Development • Authors: Yong D. Ngondjeb --- , CameroonThis study aims to assess the economic impact of climate change on crop farming activities in the Sudano-Sahelian Area of Cameroon. The study uses the Ricardian model and is based on farm data generated from a survey carried out in... -
Does soil compaction on harvesting extraction roads affect long-term productivity of Eucalyptus plantations in Zululand, South Africa?
Item type: Journal Article • Journal: The Southern African Forestry Journal • Authors: Colin W. Smith --- ,The effect ofsoil compaction on the growth of Eucalyptusgrandis and two clonal hybrids (Eucalyptus grandis x urophylla (E. gxu) and Eucalyptus grandis x camaldulensis (E. gxc)) was evaluated on harvesting extraction roads at three sites in the Zululand region ofKwaZulu-Natal... -
The effect of fish predation on benthic macroinvertebrates in a seasonal stream in north-western Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Albert Chakona Brian Marshall Luc BrendonckThe cumulative impact of the entire fish assemblage on benthic macroinvertebrate assemblages was investigated over four months in a removal experiment in isolated pools that persist through the dry season, in an intermittent stream in north-western Zimbabwe. Macroinvertebrate taxonomic richness... -
Caddisfly (Trichoptera) larvae of the Opa River basin, south-western Nigeria
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: SylvesterS OgboguCaddisflies in the streams of the Opa River catchment basin in Ile-Ife, south-western Nigeria, were surveyed, documenting nine genera in six families. Hydropsychidae is the most speciose family, with three genera, and has the highest number of individuals in the... -
Effect of an impoundment on nutrient dynamics in the Kihansi River, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RJ Ideva J Machiwa F Schiemer T HeinThe impact of the Kihansi Dam on electrical conductivity, pH, temperature and dissolved oxygen in the Kihansi River was assessed in 2005 after 85% of the original river flow had been diverted to the Lower Kihansi power plant. The results... -
A preliminary assessment of the impact of forest conversion from natural to pine plantation on macroinvertebrate communities in two mountain streams in Zimbabwe
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: A Chakona B MarshallThis study presents preliminary data on the influence of forest conversion from natural to pine plantation on benthic macroinvertebrates in streams in the Chimanimani Mountains in the Eastern Highlands of Zimbabwe, a region that has received little attention with respect... -
Fish community response to increased river flow in the Kariega Estuary, a freshwater-deprived, permanently open southern African system
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: PD Vorwerk PW Froneman AW Paterson AK WhitfieldThe littoral and demersal ichthyofaunal community structure in the freshwater-deprived, permanently open Kariega Estuary was investigated following heavy rain in November 2006 and was compared to low-flow condition data from 1991 and 1996. All surveys took place during the spring... -
Influence of largemouth bass, Micropterus salmoides, on abundance and habitat selection of Cape galaxias, Galaxias zebratus, in a mountain stream in the Cape Floristic Region, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: JM Shelton JA Day CL GriffithsPredatory alien fishes have been widely introduced into streams in the Cape Floristic Region (CFR), South Africa, but little is known about their effect on native fishes. Results from this 2006 study suggest that the presence of alien predatory largemouth... -
Intrusion of beach-disposed dredger spoil into the Mhlathuze Estuary, South Africa, and its impact on Zostera capensis
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: DP Cyrus CF MacKay SP WeertsPort expansion at Richards Bay on the east coast of South Africa between 1996 and 1999 required the disposal of some 5,998,429 m3 of dredge spoil. This was deposited via a pipeline onto the adjacent beach and spilled into the... -
Application of a direct toxicity assessment approach to assess the hazard of potential pesticide exposure at selected sites on the Crocodile and Magalies rivers, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: TM Ansara-Ross --- Centre for Aquatic Research, Department of Zoology, South Africa V Wepener --- Centre for Aquatic Research, Department of Zoology, South Africa PJ van den Brink --- Department of Aquatic Ecology and Water Quality Management, The Netherlands MJ Ross --- Centre for Aquatic Research, Department of Zoology, South AfricaThe potentially hazardous effects of agricultural pesticide usage in the Crocodile (west) Marico catchment were evaluated using the Danio rerio and Daphnia pulex lethality, Selenastrum capricornutum growth inhibition and the Ames mutagenicity plate incorporation assays. Hazard assessment categories are proposed... -
Diving behaviour of African penguins: do they differ from other Spheniscus penguins?
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: PG Ryan SL Petersen A Simeone D GrémilletAfrican penguins Spheniscus demersus closely resemble Magellanic S. magellanicus and Humboldt S. humboldti penguins and have similar breeding and feeding ecologies. Adults feed on pelagic schooling fish in continental shelf waters, but African penguins have been reported to have shallower... -
Changes in the trophic structure of the southern Benguela before and after the onset of industrial fishing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon CL GriffithsDespite a human presence in the Benguela region for at least one million years, exploitation of marine resources by European seafarers only began in earnest in the 1400s. Ecopath with Ecosim was used to construct and compare mass-balanced foodweb models... -
Changes in the trophic structure of the northern Benguela before and after the onset of industrial fishing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KE Watermeyer LJ Shannon J-P Roux CL GriffithsExploitation of marine resources has been occurring in the northern Benguela ecosystem for centuries. Understanding the cumulative long-term effects of this exploitation is important toward effective management of the modern system. Retrospective mass-balanced models of the ecosystem have been constructed,... -
The effect of ungulate grazing on a small mammal community in southeastern Botswana
Item type: Journal Article • Journal: African Zoology • Authors: Eli R. Saetnan --- University of Illinois at Urbana-Champaign, U.S.A. Christina Skarpe --- Norwegian Institute for Nature Research, NorwayUngulates can reduce the quantity of food available for other herbivores in general or reduce the available cover for small mammals in particular. On the other hand, browsing and grazing may facilitate foraging by other mammals if the quality and... -
Assessing local scale impacts of Opuntia stricta (Cactaceae) invasion on beetle and spider diversity in Kruger National Park, South Africa
Item type: Journal Article • Journal: African Zoology • Authors: M.P. Robertson --- Centre for Invasion Biology, Department of Zoology and Entomology, South Africa K.R. Harris --- Centre for Invasion Biology, Department of Zoology and Entomology, South Africa J.A. Coetzee --- Department of Zoology and Entomology, South Africa L.C. Foxcroft --- Conservation Services, South African National Parks, South Africa A.S. Dippenaar-Schoeman --- Plant Protection Research Institute, Agricultural Research Council, South Africa B.J. van Rensburg --- Centre for Invasion Biology, Department of Zoology and Entomology, South AfricaThere is a paucity of studies examining direct impacts of introduced alien species on biodiversity, a key need for motivating for alien species control in conservation areas. The introduced prickly pear (Opuntia stricta) has invaded some 35 000 ha of... -
Photo-identification and habitat use of Atlantic humpback dolphins Sousa teuszii around the Río Nuñez Estuary in Guinea, West Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: CR Weir --- Ketos Ecology, UKEcological data for the Atlantic humpback dolphin Sousa teuszii are scant. Six on-effort Sousa teuszii sightings were recorded during 817.6 km of boat-based effort in the Río Nuñez region of Guinea during October and November 2013. Two incidental sightings were also... -
A preliminary investigation of the effects of an Inter Basin Transfer on the ichthyofauna of a small river in northern KwaZulu-Natal,South Africa
Item type: Journal Article • Journal: African Zoology • Authors: A. Viljoen [AN0001] D.P. Cyrus --- Coastal Research Unit of Zululand, South AfricaA study was carried out to provide baseline data so that future impacts of an Inter Basin Transfer on the fish fauna of the Mvuzana River could be assessed. Seven species of fish were recorded, and all were present under... -
Diatoms as water quality indicators in the upper reaches of the Great Fish River, Eastern Cape, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: M Holmes --- School of Biological Sciences, South Africa JC Taylor --- School of Biological Sciences, South AfricaThis study focused on the spring-fed upper reaches of the economically important Great Fish River with the aim of determining if diatoms could be used for biomonitoring in semi-arid conditions in southern Africa. Five sites were monitored monthly from 2010... -
Factors affecting the breeding success of the African Black Oystercatcher (Haematopus moquini): a perspective on protection and food availability
Item type: Journal Article • Journal: African Zoology • Authors: Douglas Loewenthal --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Dane M Paijmans --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South Africa Philip AR Hockey --- Percy FitzPatrick Institute of African Ornithology, DST-NRF Centre of Excellence, South AfricaBreeding success (fledglings pair−1 y−1) of the Red-listed African Black Oystercatcher (Haematopus moquini) is highly variable, both spatially and temporally. Despite a diversity of natural factors causing this variability, there is evidence that two anthropogenic factors, i.e. disturbance and an... -
Scope of research on Parthenium hysterophorus in Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Owen Rubaba --- College of Health Sciences, South Africa Moses Chimbari --- College of Health Sciences, South Africa Samson Mukaratirwa --- School of Life Sciences, South AfricaParthenium (Parthenium hysterophorus) is an invasive plant that invades farm and grazing lands, and affects biodiversity, animal and human health, agricultural productivity and food security. The plant is native to the Americas, but was introduced to Africa, Asia and Australia... -
Modelling the impacts of semi-intensive aquaculture on the foodweb functioning of a Nile Delta coastal lake
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: M Bocci --- Department of Environmental Sciences, Informatics and Statistics, Italy R Pastres --- Department of Environmental Sciences, Informatics and Statistics, Italy S Kholeif --- National Institute of Oceanography and Fisheries (NIOF), Egypt D Dalla Barba --- Department of Environmental Sciences, Informatics and Statistics, Italy D Brigolin --- Department of Environmental Sciences, Informatics and Statistics, ItalyNutrient loadings are an important component of aquaculture impacts as they can lead to cascade effects at the ecosystem level. An evaluation of these effects on foodweb functioning is presented and discussed for the case study of Lake Burullus in... -
Focusing on monofilament nets while overlooking the priorities of artisanal fisheries governance in Senegal
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Thiao --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal A Mbaye --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal M Dème --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), Senegal HD Diadhiou --- Centre de Recherches Océanographiques de Dakar-Thiaroye (CRODT), SenegalDespite its legal prohibition since 1998, the nylon monofilament net is still widely used in Senegalese artisanal fisheries. To achieve a complete ban on monofilament use, it is necessary to understand the main arguments for its continued use and what... -
Invertebrate drift densities in the Njoro and Kamweti Rivers in the Kenyan highlands that differ in the level of anthropogenic disturbances
Item type: Journal Article • Journal: African Zoology • Authors: Charles M M’Erimba --- Department of Biological Sciences, Kenya John G Mbaka --- Department of Land and Water Management, Kenya Priscilla W Mureithi --- Department of Biological Sciences, Kenya Ken O Ouma --- Department of Biological Sciences, KenyaInvertebrate drift is one of several fundamental ecological processes in streams. However, little is known about the dynamics of invertebrate drift in Kenyan streams. In this study, we assessed invertebrate drift in two rivers, i.e. Njoro and Kamweti, that differ... -
Drought challenges for nature tourism in the Sabi Sands Game Reserve in the eastern region of South Africa
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: Tamzyn Smith --- , South Africa Jennifer M Fitchett --- , South AfricaThe Lowveld of South Africa, a savanna biome region economically dominated by nature tourism, has experienced a prolonged dry period beginning in approximately 2015. Despite emerging literature on climate and tourism in southern Africa, the challenges to tourism in the... -
Abiotic and biotic responses to the 2016/2017 restoration project at the St Lucia Estuary mouth, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Jones --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa NK Carrasco --- School of Life Science, South Africa R Perissinotto --- DST/NRF Research Chair in Shallow Water Ecosystems, South Africa C Fox --- Ezemvelo KwaZulu-Natal Wildlife, St Lucia Estuary, South AfricaThe St Lucia Estuary is the largest estuarine lake in Africa and has been heavily impacted by anthropogenic activities, which include a history of human-induced sediment loading and separation in the 1950s of the originally common St Lucia Estuary-uMfolozi River... -
Mangrove colonisation of the Mlalazi Estuary, South Africa: a response to artificial breaching
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: RH Taylor --- Hydrology Department, South AfricaThe Mlalazi Estuary has 40 ha of mangroves, but before the 1930s there were none. The purpose of this study is to understand why this change occurred, and how the understanding thus gained can provide ecological information that will help... -
Response of the barrier island coastal region of southwestern Nigeria to climate and non-climate forcing
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: IB Danladi --- Department of Geological Engineering, Turkey M Gül --- Department of Geological Engineering, Turkey E Ateş --- Vocational School of Ayaş, TurkeyDespite threats emanating from the influence of climate and non-climate forcing on the barrier island coastal region of southwestern Nigeria, the extent of the coastal erosion is poorly understood. We report evidence of coastal erosion and sediment accumulation in the... -
Teratological cases of the ocular patterns in the South African endemic trapdoor spider genus Stasimopus Simon (1892) (Araneae, Mygalomorphae, Stasimopidae)
Item type: Journal Article • Journal: African Zoology • Authors: Shannon Mitchell --- , South Africa Catherine Sole --- , South Africa Robin Lyle --- , South AfricaTeratology is the science that deals with the causes and patterns of deformities, abnormalities and defects in the physical development of animals. Teratological occurrences can be due to genetic or environmental conditions. Ocular teratologies are common in hypogean spiders. This... -
An assessment of the ecological condition of a wetland on the Lions River floodplain based on soil and vegetation parameters, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: H Ndlovu --- , South Africa DC Kotze --- , South Africa GPW Jewitt --- , South Africa CD Morris --- , South AfricaWetlands are increasingly exposed to human activities, resulting in degradation. As the wetland degrades, it loses functionality. In South Africa, wetlands can play an important water-regulating role. This study aims to establish the ecological condition of a historically utilised wetland... -
Development of a Water Quality Assessment Index for the Chania River, Kenya
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: GK Robert --- , Kenya CN Onyari --- , Kenya JG Mbaka --- , KenyaHuman-related activities are known to have deleterious effects on the water quality of aquatic ecosystems, but there is limited information on the impact of these on rivers in tropical regions, such as the Chania River in Kenya. The Chania River... -
Dazzled by the light: the impact of light pollution from ships on seabirds at Tristan da Cunha
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Peter G Ryan --- , South Africa E Molly Ryan --- , South Africa James P Glass --- ,Most of the millions of burrow-nesting petrels that breed at Tristan da Cunha are susceptible to light pollution. On dark, misty nights, petrels become disoriented by artificial lights, mainly from ships. From 2013 to 2021 at least 1 823 petrels... -
The effect of changes in human drivers on the fire regimes of South African grassland and savanna environments over the past 100 years
Item type: Journal Article • Journal: African Journal of Range & Forage Science • Authors: James R Puttick --- , South Africa M Timm Hoffman --- , South Africa Timothy G O’Connor --- , South AfricaFire is a key regulator of tree cover in grassy ecosystems, but century-long changes in fire regimes have not been explicitly quantified in South Africa. This study aimed to determine changes in the fire regimes of South Africa’s grassy biomes... -
Structural assemblages of plant species in the Owabi Ramsar Wetland in the Ashanti Region of Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Collins A Nsor --- , Ghana Rockson Acolatse --- , Ghana John N Mensah --- , Ghana Samuel K Oppong --- , Ghana Daniel Dompreh --- , Ghana Louis Addai-Wireko --- , GhanaAnthropogenic activities as predictors of species assemblages in the Owabi Ramsar Wetland were investigated between May and September 2019. Data were collected in 154 plots at five different sites. The prevalence index method was used to categorise the species into... -
The Catalan tourism subsystem: applying the methodology of subsystems in the tourism sector
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Albert Vancells --- , Spain Juan Antonio Duro --- , SpainThe analysis of input-output is one of the methodologies most applied in tourism literature to the study of the impacts of tourism activity. In this article, we apply the input-output (IO) subsystems methodology. This methodology is a useful tool for... -
Influence of anthropogenic activities on water quality of the Kihansi River (Tanzania) and on population trends of captive Kihansi spray toads (Nectophrynoides asperginis)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Atuhombye Sigala --- , United Republic of Tanzania Kelvin Ngongolo --- , United Republic of Tanzania Naza Mmbaga --- , United Republic of TanzaniaFreshwater habitats in Africa receive large amounts of pollutants that affect several aspects of aquatic biodiversity, including Kihansi spray toads (KST) (Nectophrynoides asperginis). Little information is available on the influence of anthropogenic activities on the water quality along the Kihansi... -
Estimating the economic damage caused by jellyfish to fisheries in Morocco
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: B Mghili --- University Abdelmalek Essaâdi, Morocco M Analla --- University Abdelmalek Essaâdi, Morocco M Aksissou --- University Abdelmalek Essaâdi, MoroccoAlthough there is great fluctuation in annual recordings of jellyfish along the Moroccan Mediterranean coast and an absence of long-term datasets, there is a common perception that jellyfish numbers are rising. To better understand the possible economic losses sustained by... -
Impact of tourism on residents’ well-being amid the CoVID-19 pandemic in Bali
Item type: Journal Article • Journal: Research in Hospitality Management • Authors: Larissa Huser --- Universitas Triatma Mulya International, Indonesia Erna Wiles --- Universitas Triatma Mulya International, Indonesia Rodney Westerlaken --- NHL Stenden University of Applied Sciences, The NetherlandsBy being dependent on one of the most impacted industries, the travel industry, Balinese residents experienced a considerable downturn in their well-being during the COVID-19 pandemic. This research aims to examine the extent to which sociocultural, economic and environmental aspects... -
Socio-ecological change in bait fisheries for the common sandprawn Kraussillichirus kraussi in Durban Harbour, South Africa
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: D Chetty --- Oceanographic Research Institute (ORI), South Africa E Steyn --- Oceanographic Research Institute (ORI), South Africa JC Groeneveld --- Oceanographic Research Institute (ORI), South AfricaBait fishing for the common sandprawn Kraussillichirus kraussi in Durban Harbour, on the east coast of South Africa, has a history going back to the early 20th century and has been influenced by port development and political changes over time... -
Palearctic White Storks Ciconia ciconia in the Western Cape, South Africa, in the 20th century
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Les G Underhill --- University of Cape Town, South AfricaAt the start of the 20th century, the southern limit of the nonbreeding range of the White Stork Ciconia ciconia, a migrant from the Palearctic, was considered to be at the Orange River; they moved around opportunistically in this area...