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Initiating dialogue between scientists and managers of biological invasions

Journal Articles & Books
Diciembre, 2010
Sudáfrica
África austral

We describe an initiative to improve the flow of information between researchers and managers as part of two international scientific symposia on biological invasions held in South Africa in 2008 and 2009. Formal workshops and information sessions for land managers were run during the symposia. At the end of each symposium, the managers ran dedicated question-and-answer sessions on the research they felt was needed to improve their work. We discuss the potential of such interventions to increase interaction and awareness between researchers and managers of biological invasions.

Soil carbon and nitrogen across a chronosequence of woody plant expansion in North Dakota

Journal Articles & Books
Diciembre, 2010
América Septentrional

Woody plant expansion has been documented on grasslands worldwide as a result of overgrazing and fire suppression, but changes in ecosystem structure and function accompanying this phenomenon have yet to be extensively studied in the temperate semi-arid grasslands of North America. The primary objectives of this study were to determine the influence of woody plant expansion on soil carbon (C), soil nitrogen (N), and roots to a depth of 15 cm along a 42-year (1963-2005) chronosequence encompassing grassland, woodland, and transition zones in a northern Great Plains grassland.

How Certain Are Salmon Recovery Forecasts? A Watershed-scale Sensitivity Analysis

Journal Articles & Books
Diciembre, 2010
Estados Unidos de América

Complex relationships between landscape and aquatic habitat conditions and salmon (Oncorhynchus spp.) populations make science-based management decisions both difficult and essential. Due to a paucity of empirical data, models characterizing these relationships are often used to forecast future conditions. We evaluated uncertainties in a suite of models that predict possible future habitat conditions and fish responses in the Lewis River Basin, Washington, USA. We evaluated sensitivities of predictions to uncertainty in model parameters.

Trees outside forests and rural livelihoods: a study of Chitwan District, Nepal

Journal Articles & Books
Diciembre, 2010
Nepal

Trees outside forests (TOF) in Nepal's Terai have significantly increased over the past decade. The Chitwan District was one of the focus districts in the Terai Community Forestry Development Project that promoted a tree seedling distribution program. This paper examines the current position of tree integration on farmland and its contribution to livelihoods of rural households in this district.

Soil fertility and GIS raster models for tropical agroforestry planning in economically depressed and contaminated Caribbean areas (coffee and kidney bean plantations)

Journal Articles & Books
Diciembre, 2010
Haití
República Dominicana
América central

In the jaragua-bahoruco-enriquillo biosphere reserve, located on the southern border between the Dominican Republic and Haiti, there are depressed rural areas with soils with high content in Cadmium and other heavy metals which originate naturally in the geological substrate.