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Growth patterns of the pearl oyster Pinctada margaritifera L. in Gazi Bay, Kenya
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: KM Mavuti EN Kimani T MukiamaCulture of pearl oysters is rapidly increasing worldwide, including the western Indian Ocean. The oyster Pinctada margaritifera L., which produces the most highly valued black pearls, occurs in East Africa, a nd as been exploited there for the shell for... -
Seasonality in fish assemblage structure in an East African mangrove creek
Item type: Journal Article • Journal: African Journal of Marine Science • Authors: MW Wainaina --- , Kenya B Kaunda-Arara --- Department of Fisheries and Aquatic Sciences, Kenya JM Njiru --- Department of Fisheries and Aquatic Sciences, KenyaThe spatial and seasonal structures of fish assemblages in a tropical mangrove tidal creek, Tudor, Kenya, were analysed from monthly survey data, extending from October 2007 to July 2008, and covering the north-east (NEM; October–March) and south-east (SEM; April–July) monsoon... -
Nature and pattern of lagoon fisheries resource utilisation and their implications for waterbird management in coastal Ghana
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: F Gbogbo W Oduro SK OppongSeasonal patterns in human fisheries resource utilisation and the capture characteristics of fish, swimming crabs and land crabs harvested from four coastal lagoons in Ghana between September 2005 and August 2007 are described. These are discussed in relation to sustainable... -
Seasonal variation in diversity and abundance of understorey birds in Bunduki Forest Reserve, Tanzania: evaluating the conservation value of a plantation forest
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Chacha Werema --- Department of Zoology and Wildlife Conservation, Tanzania Kim M Howell --- Department of Zoology and Wildlife Conservation, TanzaniaPlantation forests generally support lower bird diversity than natural forests. However, in some instances the plantations have been found to provide suitable habitat for a number of bird species. In the Eastern Arc Mountains, there is limited knowledge how understorey... -
Seasonal elevational movements of Eastern Olive Sunbird
Cyanomitra olivacea in the Uluguru Mountains, TanzaniaItem type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Chacha Werema --- Department of Zoology and Wildlife Conservation, TanzaniaLittle is known about the seasonal elevational movements for most tropical avifauna species. Seasonal elevational movements of the Eastern Olive Sunbird Cyanomitra olivacea were studied along an elevational gradient from 600 to 1 500 m above sea level in the Uluguru... -
Cultivar genetic gains from 50 years of irrigated sugarcane breeding in South Africa
Item type: Journal Article • Journal: South African Journal of Plant and Soil • Authors: Marvellous Zhou --- Department of Plant Breeding, South AfricaCultivar genetic gains provide a measure of benefits to growers from sugarcane breeding programmes and determine the effectiveness of cultivar development. The objective of this study was to determine the genetic gains for cane yield, percent estimated recoverable crystal (ERC%)... -
Seasonal abundance and distribution of Red-capped Robin Chat Cossypha natalensis in the Eastern Arc Mountains, Tanzania
Item type: Journal Article • Journal: Ostrich: Journal of African Ornithology • Authors: Chacha Werema --- , TanzaniaIn Africa, the migratory status of the Red-capped Robin Chat Cossypha natalensis is still not well understood. In some areas, this species has been regarded as either a full or a partial migrant, whereas in other parts of its range,... -
Assessment of the ecological status of the Kinyankonge River (Burundi), using a Biotic Integrity Index of zooplankton (BII-zooplankton)
Item type: Journal Article • Journal: African Journal of Aquatic Science • Authors: S Buhungu --- , Burundi C Sibomana --- , Burundi DC Adjahouinou --- , Bénin G Ntakimazi --- , Burundi CA Bonou --- , Bénin E Montchowui --- , République du BéninThis study aimed at assessing the ecological status of the Kinyankonge River using a zooplankton-based Biotic Integrity Index (BII-zooplankton). This was achieved through monthly collections of zooplankton from four stations along the river over 18 months (from July 2015 to... -
Distribution and abundance of African elephants in Ngorongoro Crater, northern Tanzania
Item type: Journal Article • Journal: African Zoology • Authors: John Kioko --- , Tanzania Alanna Horton --- , United States Margo Libre --- , United States Jennifer Vickers --- , United States Emma Dressel --- , United States Heather Kasey --- , United States Pastory M Ndegeya --- , Tanzania Donatus Gadiye --- , Tanzania Bernard Kissui --- , Tanzania Christian Kiffner --- , TanzaniaWe studied the distribution and abundance of African elephants in Ngorongoro Crater (NC), northern Tanzania to test whether male and female elephants select different habitats and to assess whether elephant abundance was related to monthly precipitation. From 2016 to 2017,... -
Population and breeding patterns of the pest rodent: Mastomys natalensis in a maize dominated agroecosystem in Lake Victoria crescent zone, Eastern Uganda
Item type: Journal Article • Journal: African Zoology • Authors: Alex Mayamba --- , Uganda Robert Modest Byamungu --- , Tanzania Herwig Leirs --- , Belgium Isabirye Moses --- , Uganda Rhodes H Makundi --- , Tanzania Didas N Kimaro --- , Tanzania Apia W Massawe --- , Tanzania David Kifumba --- , Uganda Alice Nakiyemba --- , Uganda Mshaka E Mdangi --- , Tanzania Brian E Isabirye --- , Kenya Loth S Mulungu --- , TanzaniaMultimammate mice (Mastomys natalensis) are a key rodent pest species to cereal crop production in Sub-Saharan Africa. This study aimed at generating information on the population fluctuation and breeding patterns of M. natalensis in a maize dominated agro-ecosystem in the... -
Population status, distribution and seasonal range of Grevy’s zebra (Equus grevyi) in a protected savannah area
Item type: Journal Article • Journal: African Zoology • Authors: --- Samara University, Ethiopia --- Addis Ababa University, Ethiopia --- Addis Ababa University, EthiopiaThe genus Equus comprises six species and 22 subspecies. Ethiopia is the only country in the world that has all three surviving species of zebra. The population status, structure, and seasonal range of Grevy’s zebra (Equus grevyi) were studied in...