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Now showing items 61-70 of 101
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, ...
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 ...
Constraints and potentials of the fish market in the Okavango Delta, Botswana
(Academic Journals, 2010-12-04)
The Okavango Delta is the largest multi-species and multi-gear fishery in Botswana. However, there is
lack of an understanding of the nature of fish market in the Delta. The objectives of the survey were (1)
to identify ...
Relationship between small-scale structural variability and simulated vegetation productivity across a regional moisture gradient in southern Africa
(2011-11-23)
The observed variability in vegetation structure within landscapes was used as the basis for model estimates of the range of annual productivity of landscape patches at four sites along a moisture gradient in southern ...
Spatial policy in natural resources governance
(Science Pubblishing Group, http://article.sciencepublishinggroup.com/, 2016-09-29)
Governance of natural resources includes issues of power, use, access and most importantly, responsibility. While many people assume natural resources to be free and
open for all, most natural resources are in fact under ...
Effects of divergent migratory strategies on access to resources for Cape buffalo (Syncerus caffer caffer)
(Oxford University Press; https://academic.oup.com, 2016-12-05)
Populations of large herbivores frequently display divergent migratory strategies, a likely consequence of the trade-off between the costs and benefits of migration. Globally, physical and environmental barriers disrupt ...
The role of vegetation in the Okavango Delta silica sink
(Springer Link; https://link.springer.com, 2014-12-16)
We assessed the role of vegetation and hydrology in the Si cycle in the Okavango Delta. Our results show a large storage of biogenic Si (BSi) in vegetation and the sediments. The biological storage is among the highest ...
Influence of the annual flood-pulse on catch per unit effort, condition and reproduction of Clarias gariepinus from the upper Okavango Delta, Botswana
(Tailor and Francis Online; https://www.tandfonline.com, 2016-03-07)
Catch per unit effort (CPUE), length, weight and maturity data for Clarias gariepinus were collected during monthly gillnet surveys in the upper Okavango Delta between 2001 and 2009 to investigate their relationship with ...
Water quality dynamics in the Boro-Thamalakane-Boteti river system, northern Botswana
(Tailor and Francis Online; https://www.tandfonline.com, 2014-11-11)
The quality of water in aquatic systems is subject to temporal and spatial variations due to varying effects of natural and anthropogenic factors. This study assessed the dynamics of water ...