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Mostrando ítems 1 a 9 de 75.
  1. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Kenya

    The diversity of nematode destroying fungi in Taita Taveta, Wundanyi division, Coast
    Province, Kenya, was investigated between May 2006 and December 2007 aiming at harnessing
    their potential in the biological control of plant parasitic nematodes in the area.
    Given that the intensity of land cultivation is continually increasing in the study area, it is
    prudent to document the status of the nematode destroying fungi before the remaining
    forest habitats are ultimately disrupted. Soil samples were collected from forest, maize/

  2. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009

    A range of tools have been proposed to support decision making in contaminated land remediation. From a European perspective it is clear, however, that there are considerable national differences in the decision support process, and more generally in the extent to which this process supports the selection of less invasive, alternative remediation options such as phytoremediation, in situ immobilisation etc. (referred to here as “gentle” remediation technologies).

  3. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Nueva Zelandia

    We conducted two field experiments to explore the reactions of feral ferrets (Mustela furo) to traps and bait dispensers set on pastoral farmland in central North Island, New Zealand. First, in 2004 we showed that only six of 13 radio-collared ferrets resident near four observation stations approached to within 8m of two stations, and only three of the six entered over 8days of observation. Five of the 15 ferrets available on the 6000ha study area eluded recapture, although all remained present.

  4. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Países Bajos

    The effect of shallow water table fluctuations on the evaporation and CO₂ fluxes in a peatland is investigated. The fluxes of evaporation and net ecosystem exchange of carbon were measured from mid-spring to the end of summer in 2005 and 2006 and simulated independently with process models. The observed and modelled data were then compared along a gradient of water levels. Any variation along the gradient would imply an influence of the water table on the flux. It became evident that changes in the water table had no effect on the evaporation and CO₂ fluxes of the peatland.

  5. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Burkina Faso, África

    There is an increasing understanding that forests and the forestry sector are key elements in poverty reduction strategies in Africa. However, issues of equity between various forest users are becoming a major challenge to environmental development, forest management and poverty reduction. This paper presents an analysis of household representatives' socio-economic determinants and other constraints on accessing forest products, based on data collected through a questionnaire survey of 1865 respondents in seven districts of the Sissili province, southern Burkina Faso.

  6. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009

    There is increasing worldwide interest in land-use allocation and management within the sphere of rural planning and development. The study of land-use patterns mainly focuses on understanding the practices and values of individuals involved, and no debate of this issue would be complete without taking into account non-industrial private forest (NIPF) ownership as a key component in most rural areas worldwide.

  7. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Nueva Zelandia

    This paper describes key linkages between land management activities and stream water quality for a 5230ha catchment used for intensive pastoral agriculture in southern New Zealand. Due to low annual rainfall and the wide coverage of soils with low available water-holding capacities, flood irrigation of the 2400ha of flat land within the catchment is an important feature impacting on farm business profitability and stream health. Water quality variables and nutrient and sediment yield estimates are reported for a four-year period.

  8. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009

    As urban development continues to encroach on the natural and rural landscape, land-use planners struggle to identify high priority conservation areas for protection. Although knowing where urban-sensitive species may be occurring on the landscape would facilitate conservation planning, research efforts are often not sufficiently designed to make quality predictions at unknown locations. Recent advances in occupancy modeling allow for more precise estimates of occupancy by accounting for differences in detectability.

  9. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Nepal

    Land use, land use change and forestry activities play an important role in determining whether soil is a sink or source of atmospheric carbon dioxide (CO₂). The effects of land use change on greenhouse gases and climate change are receiving greater attention in many developing countries. We simulated changes in soil organic carbon (SOC) pool over 100 years (1950-2050) under managed dense Shorea forest (DS), rainfed upland (Bari) and irrigated low land (Khet) of Pokhare Khola, a mid-hill watershed of Nepal, using the Century model.

  10. Library Resource
    Artículos de revistas y libros
    Diciembre, 2009
    Brasil

    Recent increases in the price of oil have generated much interest in biofuel development but the social and environmental impacts of large scale adoption of biofuels at both regional and national scales remain understudied, especially in developing economies. Although the recent swings in prices for oil may slow down these surges in supply and demand, production of biofuels from food remain profitable above $50/barrel making the biofuel market viable.

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