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COASTAL AQUATIC ECOSYSTEMS, CONSERVATION AND MANAGEMENT STRATEGIES IN NIGERIA
Item type: Journal Article • Journal: Southern African Journal of Aquatic Sciences • Authors: E.A. Ajao --- , NigeriaThe coastal ecosystems in Nigeria are classified into four broad regions according to differences in general morphology, vegetation and beach type. They are the barrier lagoon complex, the transgressive mud beach, the Niger delta and the strand coast. The delta... -
The primary carbon sources utilised by fishes in the Mngazi and Mngazana estuaries, South Africa: a preliminary assessment
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Sekiwe Mbande William Froneman AlanK WhitfieldA number of studies have used stable carbon isotopes to analyse aspects of the food web structure in South African estuaries but none has compared mangrove and non-mangrove estuarine food webs. This study compares the primary carbon sources utilised by... -
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... -
Contribution by microbes to the foodweb of a mangrove biotope: the approach of carbon and nitrogen stable isotopes
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MA Nabeel --- , India K Kathiresan --- , India N Rajendran --- , India H Ohnishi --- , Japan H Hamaoka --- , Japan K Omori --- , JapanThe contribution of mangroves as a source of nutrients to the foodweb of fish is under debate worldwide. An analysis of stable isotopes of carbon and nitrogen in various consumers and producers of a mangrove biotope in southern India revealed... -
Composition of macrobenthos in the Wouri River estuary mangrove, Douala, Cameroon
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: VM Ngo-Massou --- Department of Botany, Faculty of Science, Cameroon GL Essome-Koum --- Department of Botany, Faculty of Science, Cameroon E Ngollo-Dina --- , USA N Din --- Department of Botany, Faculty of Science, CameroonThe macrobenthos of mangroves is dominated by crabs and molluscs, which have a significant ecological role in terms of the structure and function of mangroves. The aim of this study was to determine the abundance and biological diversity of these... -
Mangrove litter production and organic carbon pools in the Mngazana Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Anusha Rajkaran JanineB AdamsWood harvesting is reducing the density of adult mangrove trees in the Mngazana Estuary. This is expected to decrease the amount of litter produced as well as the availability of organic carbon to the estuary and the nearshore environment. Pools... -
Heavy metal pollution levels in water and oysters, Saccostrea cucullata, from Mzinga Creek and Ras Dege mangrove ecosystems, Tanzania
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Augustina Mtanga JohnF MachiwaHeavy metal (cadmium, chromium, copper, mercury, lead and zinc) concentrations in mangrove forests were investigated in water, suspended particulate matter (SPM) and oyster samples from the Mzinga Creek and Ras Dege mangrove stands, Tanzania, using Inductively Coupled Plasma–Atomic Emission Spectroscopy... -
Mangrove expansion and population structure at a planted site, East London, South Africa
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Sabine CL Hoppe-Speer --- Department of Botany, South Africa Janine B Adams --- Department of Botany, South Africa Anusha Rajkaran --- Department of Botany, South AfricaAvicennia marina (Forrsk.) Vierh. was planted in 1969 at Nahoon Estuary, East London, followed a few years later by the planting of Bruguiera gymnorrhiza (L.) Lam. and Rhizophora mucronata (L.) among the larger A. marina trees. This study tested the... -
Population structure of the sicklefin lemon shark Negaprion acutidens within the Curieuse Marine National Park, Seychelles
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: RD Hodgkiss --- Global Vision International Seychelles, Seychelles A Grant --- Global Vision International Seychelles, Seychelles JHR McClelland --- Global Vision International Seychelles, Seychelles R Quatre --- Seychelles National Parks Authority, Seychelles B Rademakers --- Global Vision International Seychelles, Seychelles C Sanchez --- Nature Seychelles, Seychelles C Mason-Parker --- Global Vision International Seychelles, SeychellesThis study produced the first data on population parameters for sicklefin lemon shark Negaprion acutidens at the granitic Seychelles Islands, adding to a limited catalogue of species information. Juveniles at a site in the Curieuse Marine National Park were tagged... -
High flow variability and storm events shape the ecology of the Mbhashe Estuary, South Africa
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: NC James --- South African Institute for Aquatic Biodiversity, South Africa JB Adams --- Institute for Coastal and Marine Research, South Africa AD Connell --- South African Institute for Aquatic Biodiversity, South Africa SJ Lamberth --- South African Institute for Aquatic Biodiversity, South Africa CF MacKay --- Oceanographic Research Institute, South Africa GC Snow --- Institute for Coastal and Marine Research, South Africa L van Niekerk --- Institute for Coastal and Marine Research, South Africa AK Whitfield --- South African Institute for Aquatic Biodiversity, South AfricaThe possible impacts of extreme events on the ecology of selected aquatic biota within the Mbhashe Estuary were investigated during a four year (2010–2013) spring sampling programme. During periods of low to average flow conditions the estuary is shallow, turbid... -
Additive biomass model for Heritiera fomes (Buch.-Hum.) in the Sundarbans Reserved Forest, Bangladesh
Item type: Journal Article • Journal: Southern Forests: a Journal of Forest Science • Authors: Mohammad Raqibul Hasan Siddique --- , Bangladesh Mahmood Hossain --- , Bangladesh SM Rubaiot Abdullah --- , Bangladesh Md. Zaheer Iqbal --- , Bangladesh Mariam Akhter --- , Bangladesh Gael Sola --- , Italy Laurent Saint-Andre --- , France Matieu Henry --- , ItalyMangroves are recognised as an important carbon sequester and therefore demand accurate biomass and carbon stock estimations. This study aimed to develop additive biomass models for Heritiera fomes, the most dominant tree species of the Sundarbans Reserved Forest in Bangladesh... -
Macrofauna assemblages and their relationships with environmental parameters in mangroves of Kribi, Cameroon
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: Vanessa Maxemilie Ngo-Massou --- High Teacher’s Training College, University of Yaoundé I, Cameroon Ernest Flavien Kottè-Mapoko --- Institute of Fisheries and Aquatic Sciences at Yabassi, The University of Douala, Cameroon Guillaume Léopold Essomè-Koum --- Institute of Fisheries and Aquatic Sciences at Yabassi, The University of Douala, Cameroon Elegbede Isa Olalekan --- Lagos State University, Nigeria Boubakary --- The University of Maroua, Cameroon Laurant Nyamsi-Moussian --- The University of Douala, Cameroon Alphonse Konango-Samè --- The University of Douala, Cameroon Ophman Nsame-Bile --- The University of Douala, Cameroon Wendy Loys Keedi-A-Bougen --- The University of Douala, Cameroon Joseph Lebel Tamesse --- High Teacher’s Training College, University of Yaoundé I, Cameroon Ndongo Din --- The University of Douala, CameroonChanges in composition, abundance and distribution of macrofaunal assemblages are subject to environmental influences. However, the effects of ecological disturbance on mangrove habitats in Cameroon have not been sufficiently studied with regard to macrofaunal assemblages. This work aims to identify...