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Showing items 1 through 9 of 17185.
  1. Library Resource
    Journal Articles & Books
    December, 2015
    Ethiopia

    Unprecedented land use and land cover (LULC) changes in the Gilgel Tekeze catchment of the upper Nile River basin in Ethiopia may have far-reaching consequences for the long-term sustainability of the natural resources base. This study analyzed the dynamics and hydrologic effects of LULC changes between 1976 and 2003 as shown in satellite imagery. The effects of these LULC changes on the hydrologic response were investigated using the WetSpa model to estimate spatially distributed average annual evapotranspiration, surface runoff, and groundwater recharge.

  2. Library Resource
    Journal Articles & Books
    December, 1995
    Rwanda, Africa

    Despite its importance in agricultural development, the oft-observed inverse relationship between farm size and land productivity in developing countries has received very limited attention in Africa. This work tries to fill the gap by analyzing the relationship between farm-size and
    productivity in Rwanda.

  3. Library Resource
    Journal Articles & Books
    December, 2012
    Cameroon

    Crop raiding by African elephants threatens human livelihoods and elephants, yet studies of long-term changes in crop raiding and effects on attitudes are lacking. The scope of perceived crop damage in three communities and local attitudes toward elephants and protected areas were surveyed in the Bénoué Wildlife Conservation Area, Cameroon in 2010. Temporal changes in attitudes and perceived crop damage were estimated using previous work. The percent of households reporting elephant crop raiding increased since 1997 (58% vs. 40%).

  4. Library Resource
    Journal Articles & Books
    December, 2011
    Tanzania, Germany

    This project was initiated to promote conservation agriculture (CA) in Tanzania so as to improve the food security and rural livelihood of small- and medium-scale farmers through the scaling-up of CA as a sustainable land management (SLM) tool as well as increasing the numbers of SLM-CA farmer field schools (FFS) in communities. The project had two phases from 2004 to 2010. It was funded by a Government of Germany trust fund and implemented by the Food and Agriculture Organization of the United Nations (FAO) and the Ministry of Agriculture in Tanzania.

  5. Library Resource
    Journal Articles & Books
    December, 2009
    South Africa, Southern Africa

    There is an extraordinary assortment of technical approaches to conserving carnivore populations, but the effectiveness of conservation activities is rarely evaluated. Accordingly, we initiated a study to assess the impact of several conservation interventions on the dynamics and persistence of a leopard (Panthera pardus) population in Phinda Private Game Reserve, South Africa. These included revisions of the statutory systems that regulate problem animal control and trophy hunting, and we instituted a program intended to reduce human-leopard conflict in the region.

  6. Library Resource
    Journal Articles & Books
    December, 2012
    Tanzania

    The evaluation of landscape services essentially deals with the complex and dynamic relationships between humans and their environment. When it comes to landscape management and the evaluation of the benefits these services provide for our well-being, there is a limited representation of stakeholder and intangible values on the land. Stakeholder knowledge is essential, since disciplinary expert evaluations and existing proxy data on landscape services can reveal little of the landscape benefits to the local stakeholders.

  7. Library Resource
    Journal Articles & Books
    December, 2008
    Mozambique

    Land management in tropical woodlands is being used to sequester carbon (C), alleviate poverty and protect biodiversity, among other benefits. Our objective was to determine how slash-and-burn agriculture affected vegetation and soil C stocks and biodiversity on an area of miombo woodland in Mozambique, and how C stocks and biodiversity responded once agriculture was abandoned.

  8. Library Resource
    Policy Papers & Briefs
    December, 1997
    Malawi

    This paper uses cross section-time series data on 57 communities in Malawi to determine statistically the factors determining changes in land use, tree cover, and crop yield. The econometric model is developed from a theoretical model which also endogenizes population growth and prevailing land tenure institutions within the customary sector of Malawi. The analysis reflects changes between 1971 and 1995, utilizing aerial photos taken at these dates and complementing these with field surveys.

  9. Library Resource
    Journal Articles & Books
    December, 2015
    Nigeria, Africa

    Peste des petits ruminants (PPR), a viral disease of sheep and goats, is endemic in Nigeria. There are reports indicating the involvement of peste des petits ruminants virus (PPRV), the causative agent of PPR, in a camel respiratory syndrome in Africa. Considering that camels share the same grazing land and drinking points with other ruminants, this study was undertaken to determine the seroprevalence and extent of PPRV antibodies in Nigerian camels. A total of 1517 camel sera samples were collected from four states (Borno, Kano, Kastina and Sokoto).

  10. Library Resource
    Journal Articles & Books
    December, 2003
    Kenya

    This study employs scale-dependence as an analytical approach to understanding effects of livestock grazing on rangeland degradation in northern Kenya. It used extensive datasets previously collected from 13 200 km2 rangelands where grazing pressure gradients of livestock (varied from none, light, moderate, heavy and very heavy grazing) in conjunction with seasonality across different ecological scales influenced plant responses and probably contributed to land degradation.

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