Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 232 for “"Dry season"”.
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Determination of nutritive values of browsable plants utilised by cattle during the dry season in Sibbinda constituency of Zambezi Region - Namibia
… plant parts as cattle feed supplements during dry seasons. In depth focus group discussions and interviews were conducted to glean indigenous knowledge on how cattle utilize the browse in- situ. A total of 200 households from the Sibbinda constituency were interviewed through a questionnaire to …
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Factors Affecting Variability in the Distribution of Elephants at Nazinga Game Ranch (Burkina Faso, West Africa)
<p>Seasonal ground total counts were used to estimate elephant (Loxodonta africaca africana) population parameters in Nazinga Game Ranch, Burkina Faso. Remote sensing and GIS technology were used, as well, to relate the species distribution to environmental and anthropogenic variables, which were …
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Current and potential systems for maintaining sweetpotato planting material in areas with prolonged dry seasons: a biological, social and economic framework
… sweetpotato planting material for early season planting after the long dry season. The study sought to understand and describe farmers’ existing approaches, improve on rapid multiplication techniques and develop rational use of available planting material. Complete lack of or insufficient …
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Up in smoke: biomass burning and atmospheric emissions in the Sudanian savanna of Côte d’Ivoire
… of the planet characterized by middle and late dry season intense fires that produce large amounts of carbon monoxide (CO) and up to 40% of gross carbon dioxide (CO2) into the atmosphere each year. The general hypothesis of this research is that the contribution of biomass burning to global …
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Taxonomy, faunistics and life-history traits of Dytiscidae and Noteridae (Coleoptera) in a West African savannah
… temporary loss of their aquatic habitats during dry season. The climate in the study area is characterised by a pronounced dry season from about November to March/April, in which the temporary ponds and creeks in the savannah entirely desiccate. The only available water bodies during dry season …
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How has woody vegetation changed in north-east Namibia in response to land use, climate and fire?
… the structure of woody vegetation. Repeated late dry season fires in the west of the park have driven an increasing dominance of 3m in eastern sections of the park. This influence of different fire regimes spatially across BNP, suggests that local fire management is a significant determinant of …
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The Oceanography and Modelling of the Pontevedra Ria (NW Spain)
… averaging 2.5 mg N m ˉ² h ˉ¹ for the spring and dry season. A non-steady state nutrient budget revealed that the central and internal zones of the Pontevedra Ria display different biogeochemical characteristics. Net community production (NCP) based on phosphate uptake was spatially and temporally …
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Field Emissions of Methane and Nitrous Oxide from California Landfills
… were tested at each site during the wet and dry season. Daily, intermediate, and final covers were tested to obtain representative and comparative measurements during the wet and dry season to account for seasonal variation. In addition to the flux chamber testing, geotechnical …
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Physico-chemical characterisation of atmospheric aerosols in Tanzania, with emphasis on the carbonaceous aerosol components and on chemical mass closure
… and Morogoro) in Tanzania, during different seasons from May 2005 through May 2006. A Gent PM10 stacked filter unit sampler with sequential Nuclepore polycarbonate filters, providing coarse (2-10 µm diameter) and fine (<2 µm) size fractions, and PM2.5 and PM10 tandem filter samplers with …
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Persistence of Depositional Features in a Strongly Seasonal, Tide-Dominated Delta
… delivered to the mangrove platform during the dry season when sediment input to the system is at a minimum. Over two field seasons 70 shallow (cm) sediment cores were collected from the channel banks, imaged using x-radiography to observe fine scale changes in depositional characteristics on …
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An experimental and modeling synthesis to determine seasonality of hydraulic redistribution in semi-arid region with multispecies
… pathways for water movement from wet to dry soil layers. HR process is simulated by multi-layer canopy model (MLCan) and compared with relative measurements from the field to study effect of HR on different plant species where Posopis velutina Woot. (velvet mesquite) and understory …
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Agricultural Innovations and Development: a Case Study of Communication About Conservation Farming In Katete Disttrict
… soil fertility, food shortage especially im the dry season
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Agricultural Innovations and Development: a Case Study of Communication About Conservation Farming In Katete Disttrict
… soil fertility, food shortage especially im the dry season
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The Ecology and Behaviour of the Common hippopotamus, Hippopotamus amphibious L. in Katavi National Park, Tanzania: Responses to Varying Water Resources
… fell in a pronounced annual cycle. The wet season started in December, increased in January, decreased in February reaching an annual peak in March. The dry season lasted from May to November. Variation in height, biomass and greenness of ground layer swards used by feeding hippopotami, …
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Influence of seasonal drought on body condition and nutritional state in selected tropical birds
… evidence is emerging that the severity of seasonal drought can affect the viability of bird populations. For example, analyses on a long-term mark-recapture study in central Panama showed that longer dry seasons have a significant negative effect on population growth rates in nearly a third …
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The morphology, sedimentology and palaeoenvironmental significance of two pan-lunette clusters in the Southwestern Cape of South Africa
… with predominant modern wind direction and seasonality of precipitation at both sites, although the difference is more pronounced at Agulhas. In order to elucidate the occurrence and formational processes of these features, a dual-scale approach was employed: a regional cartographic study …
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The utilization of Dambos in Chipata: A case of Mwami border area
… threshing. Cultivation is mainly done during the dry season although wet season cultivation on dambos is also possible. Livestock grazing and water extraction are also dry season activities but can continue until the early months (November to early December) of the rain season. Grass threshing is …
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Polyspecific Associations of Callimico Goeldii, Saguinus Labiatus, and Saguinus Fuscicollis in Acre, Brazil
… Associations were less common during the dry season correlating with a change in each species' diet, presumably as a response to lower fruit availability. During the wet season, the diets of all three species were composed of fruit and animal prey (primarily invertebrates), while during …
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A Critical Analysis of Tropical Savanna Forage Consumption and Utilization by Goats
… about their adaptation to the utilization of the dry, scrubby vegetation found in these areas. This study was designed to evaluate goats' ability to use this type of vegetation and their productive capacity in tropical environments. Field experiments were carried out in Managua, Nicaragua from …
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Biochemistry of micro-polutants in sediments of Mtoni estuary, Tanzania
… towards the mouth of the estuary. No clear seasonal trend of C/N ratio was observed except in the confluence region where the ratios were higher in wet than dry season. Wet season δ15N values were lower while δ13C values were higher compared to dry season values for all the stations. Mzinga …
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