Browsing Research articles (ORI) by Title
Now showing items 170-189 of 261
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Preliminary land-use and land-cover mapping in the upper Okavango basin and implications for the Okavango delta
(Botswana Society, 2005)Image processing in the upper Okavango catchment resulted in ten generalised classes which may be used as base line data for monitoring future overall land-use/cover change assessments over the entire upper catchment. ... -
A preliminary survey and analysis of the spatial distribution of aquatic invertebrates in the Okavango Delta, Botswana
(African Journal of Aquatic Science http://www.nisc.co.za/journals?id=2, 2006)The spatial distribution of aquatic macroinvertebrates in the Okavango River Delta, Botswana, was investigated during the low-water period in February 2003. This complements an earlier study undertaken during high-water ... -
Pressurized hot water extraction coupled to molecularly imprinted polymers for simultaneous extraction and clean-up of pesticides residues in edible and medicinal plants of the Okavango Delta, Botswana
(De Gruyter, http://www.degruyter.com/, 2013-10-08)In this study, an in-cell extraction and clean-up approach, employing pressurized hot water extraction (PHWE) coupled to a molecularly imprinted polymer (MIP) is proposed. The selectivity of PHWE was improved through the ... -
Prliminary assessment of the feeding ecology of silver catfish (Schilbe intermedius, Ruppel, 1832) in a seasonal floodplain of the Okavango delta
(Botswana Society, 2005)This study investigates the feeding ecology of Schilbe intermedius across its entire life history. Data were collected using experimental fishing nets in two habitats in a seasonal floodplain. The results showed that S. ... -
Probit analysis of factors influencing rural employment promotion in southern Nigeria
(Emerald Insight, http://www.emeraldinsight.com, 2012)Poverty, inequality and unemployment challenges need to be adequately addressed if sustainable human development is to be achieved. Although, these key issues are not mutually exclusive, the thrust of this paper is to ... -
Prospects of basket production in promoting sustainable rural livelihoods in the Okavango Delta, Botswana
(John Wiley and Sons, http://www.wiley.com, 2004)This paper uses the concept of sustainable rural livelihoods and income diversification to assess the role that basket making as a cultural tourism activity can play in improving rural livelihoods in the Okavango Delta, ... -
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 ... -
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 ... -
Relative effects of visualized and verbal presentation methods in communicating environmental information among stakeholders: Okavango Delta, Botswana
(http://www.informaworld.com, 2011-04-12)The present study examined the relative effectiveness of 2 public instructional communication methods in improving selected predictors of knowledge-sharing behaviors among communities in the Okavango Delta, Botswana. A ... -
The relevance of fire frequency for the floodplain vegetation of the Okavango Delta, Botswana
(Wiley, https://onlinelibrary.wiley.com, 2007)The study investigates the relevance of fire frequency for the floodplain vegetation of the Okavango Delta in Botswana, considering species composition, species richness, vegetation structure and tree density. Based on ... -
Remote sensing-derived hydroperiod as a predictor of floodplain vegetation composition
(Springer Link; https://link.springer.com, 2014-02-13)Characterising hydroperiod and vegetation for flood-pulsed wetlands is a critical first step towards understanding their ecology. In large, data-poor wetlands such as Botswana’s Okavango Delta, quantifying hydrology and ... -
Remotely sensed habitat indicators for predicting distribution of impala (Aepyceros melampus) in the Okavango Delta, Botswana
(Cambridge University Press, www.cambridge.org, 2006)We studied the spatial and temporal habitat use of impala in Botswana’s Okavango Delta at landscape level with the aid of satellite imagery, with minimal fieldwork. We related remotely sensed vegetation to impala habitat ... -
Responding to climate change through joint partnership: insights from the Okavango Delta in Botswana
(Emerald, www.emeraldinsight.com, 2014)Purpose: Climate change continues to pose a serious challenge to mankind. Given their socio-economic and vulnerable situations, resource-poor farmers will be hard hit and likely to be the most affected group in Africa – ... -
Response of a seasonal floodplain vegetation communities and soil nutrient status to flood variation in the Okavango Delta, Botswana
(University of Botswana; www.ub.bw, 2013-05)Globally many seasonal floodplain ecosystems experience flooding regime variation leading to variation in vegetation community composition and distribution and soil nutrient status. The Okavango Delta natural flooding ... -
Results from the EO-1 experiment - A comparative study of Earth Observing-1 Advanced Land Imager (ALI) and Landsat ETM+ data for land cover mapping in the Okavango Delta, Botswana
(Taylor & Francis; http://www.tandf.co.uk/journals/titles/01431161.asp, 2005-10)The Earth Observing-1 (EO-1) satellite acquired a sequence of data in 2001 and 2002 that highlighted the annual flooding of the lower Okavango Delta. The data were collected as part of the calibration/validation programme ... -
A review of customary and statutory water management institutions in Botswana and Zimbabwe
(University of Botswana, www.ub.bw, 2019-05-13)The role of institutions (indigenous or modern) in the management of water resources cannot be overemphasised. This paper is a review of literature on customary and statutory water resource management institutions in ... -
A review of the freshwater diversity in the Okavango Delta and Lake Ngami 1 (Botswana): taxonomic composition, ecology, comparison with similar 2 systems and conservation status
(Springer Link, https://www.springer.com/journal/27/, 2023-10-11)Freshwater organisms in the Okavango Delta and Lake Ngami (Botswana) provide direct and indirect benefits to people and the economy of the region. However, their existence could be potentially threatened by human activities ... -
A review of the sustainability of Jatropha cultivating projects for biodiesel production in Sothern Africa: implication for energy policy in Botswana
(Science Direct, https://www.sciencedirect.com, 2017-06-09)Jatropha curcas L. biofuel development is considered a strategy for achieving energy security, climate change mitigation, foreign exchange savings and economic development. This paper reviews the experiences of some southern ... -
Rival group scent induces changes in dwarf mongoose immediate behavior and subsequent movement
(Behavioral Ecology, https://academic.oup.com/beheco, 2016-05-15)In many social species, groups of animals defend a shared territory against rival conspecifics. Intruders can be detected from a variety of cues, including fecal deposits, and the strength of response is expected to vary ... -
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 ...