Research articles (ORI): Recent submissions
Now showing items 201-220 of 262
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Incorporating uncertainty into adaptive, transboundary water challenges: a conceptual design for the Okavango River Basin
(Inderscience, http://www.inderscience.com, 2008)In this paper, we present a review and conceptual design to integrate hydrological/ecological models, global uncertainty and sensitivity analysis, integrative modelling and decision analysis for complex and adaptive ... -
Environmental variability and the fishery dynamics of the Okavango Delta, Botswana: the case of subsistence fishing
(Blackwell Publishing, http://www.blackwellpublishing.com, 2009)The hydrological regime of the Okavango River Basin is the main driver of ecological change in the delta. The delta supports a small-scale fishery which is a source of livelihood for communities within its fringes. The ... -
Aquatic ecosystem responses to fire and flood size in the Okavango Delta: observations from the seasonal floodplains
(Springer, http://www.springer.com, 2010-07-19)The frequency of fires in the Okavango Delta seasonal floodplains peaked at an intermediate frequency of flooding. Floodplains are commonly burnt every 3–5 years. This study showed fundamental changes in ecosystem properties ... -
Pollution implications of Save River water from weathering and dissolution of metal hosting minerals at Dorowa phosphate mine, Zimbabwe
(Elsevier. http://www.elsevier.com, 2010-08-20)The study set out to determine the weathering and dissolution of metal hosting minerals at Dorowa for purposes of deducing pollution potential to the nearby Save River. Phosphate rock is mined at Dorowa for the production ... -
Tropical wetlands: seasonal hydrologic pulsing, carbon sequestration and methane emissions
(Springer, http://www.springer.com, 2010)This paper summarizes the importance of climate on tropical wetlands. Regional hydrology and carbon dynamics in many of these wetlands could shift with dramatic changes in these major carbon storages if the inter-tropical ... -
Land-use and resource conflicts in the Okavango Delta, Botswana
(Blackwell, http://www.wiley-blackwell.com, 2009)This study assesses land-use conflicts in the Okavango wetland ecosystem. A survey of the livelihood activities of a sample of four villages has been carried out and a stakeholder approach used to identify and analyse the ... -
Regeneration of seven indigenous tree species in a dry Afromontane forest, southern Ethiopia
(Elsevier, www.elsevier.com, 2010)Regeneration of seven indigenous tree species having significant ecological and economic importance was investigated in the Munessa-Shashemene dry Afromontane forest (MSF), southern Ethiopia. Densities and distributions ... -
Forest transition pathways in Asia - studies from Nepal, India, Thailand, and Cambodia
(Taylor & Francis, 2011-06-03)Tropical forest habitat continues to decline globally, with serious consequences for environmental sustainability. The South/Southeast Asian landscapes represent one of the most challenging parts of the world to study ... -
Social and ecological factors and land-use land-cover diversity in two provinces in southern Asia
(Taylor & Francis, 2009-10-23)The trend of land cover (LC) and land cover change (LCC), both in time and space, was investigated at the Simen Mountains National Park (SMNP), a World Heritage Site located in northern Ethiopia, between 1984 and 2003 using ... -
Trait-environment relations for dominant grasses in South African mesic grassland support a general leaf economic model
(Wiley Online Library, 2011-03-04)Question: Following the framework of Suding et al.(2003), we examined whether morphological traits (organismal response), tolerance and competitive effect (specific process response) were associated with grass dominance ... -
A laboratory assessment of the potential molluscicidal potency of Jatropha curcas aqueous extracts
(Taylor & Francis, 2008-05-05)Preliminary laboratory studies were conducted to determine the molluscicidal potency of Jatropha curcas, the physic nut. Biomphalaria glabrata and Bulinus globosus snails were exposed to varying concentrations of aqueous ... -
Impact of deltamethrin aerial sprays on adult Cyrtobagous salviniae in Botswana
(Taylor & Francis, 2010-12-22)The risk and effect of the insecticide deltamethrin, applied aerially in Botswana to control and eradicate tsetse fly, was studied on the non-target weevil Cyrtobagous salviniae, a biocontrol agent of the aquatic weed ... -
The "shrinking commons" in the Lake Ngami grasslands, Botswana: the impact of national rangeland policy
(http://www.routledge.com/, 2009)This paper analyses land management policy using land use mapping, interviews with farmers and other stakeholders, and a review of secondary material. The study was carried out in the Lake Ngami area of Ngamiland District ... -
The tropical African mercury anomaly: lower than expected mercury concentrations in fish and human hair
(Elsevier, 2011-02-20)Mercury is a neurotoxin and global pollutant, and wetlands and newly flooded areas are known to be sites of enhanced production of monomethylmercury, the form of mercury that is readily biomagnified in aquatic food chains ... -
Changes on traditional livelihood activities and lifestyles caused by tourism development in the Okavango Delta, Botswana
(Elsevier, 2010-09-05)The Community-Based Natural Resource Management (CBNRM) program in Botswana aims at achieving conservation and rural development. In the Okavango Delta, some communities are involved in tourism through CBNRM to improve ... -
Will reconnecting ecosystems allow long-distance mammal migrations to resume? A case study of a zebra Equus burchelli migration in Botswana
(Fauna & Flora International, 2010-04-07)Terrestrial wildlife migrations, once common, are now rare because of ecosystem fragmentation and uncontrolled hunting. Botswana historically contained migratory populations of many species but habitat fragmentation, ... -
Nutrient limitations on aboveground grass production in four savanna types along the Kalahari Transect
(Elsevier, 2010-02-19)The Kalahari Transect (KT) is an International Geosphere–Biosphere Programme mega-transect designed to examine hydrological and ecological patterns and processes throughout the savannas of southern Africa. The KT traverses ... -
Common pool resource management among San communities in Ngamiland, Botswana
(Routledge, 2009-12-14)The contestation for common pool resources in Botswana pits powerful institutions such as national governments and international organisations against powerless local communities who continue to rely heavily on these ... -
Interactions between fire and flooding in a southern African floodplain system (Okavango Delta, Botswana)
(Springer: http://www.springerlink.com, 2006)A series of 98 satellite images was analysed to reconstruct the fire and flood history of a floodplain system in southern Africa(Okavango Delta, Botswana). The data was used to investigate interactions between fire and ... -
Cadmium sorption by Moringa stemopetala and Moringa oleifera seed powders: Batch, time, temperature, pH and adsorption isotherm studies
(Academic Journals: http://www.academicjournals.org/, 2010-05)There is a widespread recognition that the presence of heavy metals such as cadmium in water is hazardous to the environment and human health and their discharge into surface waters is of great concern worldwide. The use ...