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Displaying 386 - 390 of 1195

Determinants of grassland primary production in seasonally-dry silvopastoral systems in Central America

Journal Articles & Books
Dezembro, 2014
Nicarágua
América Central
América do Sul
Caribe

Grassland primary productivity is the function that underpins the majority of the fodder production in cattle-rearing silvopastoral farms. Hence, understanding the factors that determine grassland productivity is critical for the design and management of silvpastoral systems. We studied the effect of two factors with documented impact on grassland productivity in seasonally dry silvopastures of Nicaragua, rainfall and trees.

Determinants of grassland primary production in seasonally-dry silvopastoral systems in Central America

Journal Articles & Books
Dezembro, 2014
Nicarágua
América Central
América do Sul
Caribe

Grassland primary productivity is the function that underpins the majority of the fodder production in cattle-rearing silvopastoral farms. Hence, understanding the factors that determine grassland productivity is critical for the design and management of silvpastoral systems. We studied the effect of two factors with documented impact on grassland productivity in seasonally dry silvopastures of Nicaragua, rainfall and trees.

Longevity of rodenticide bait pellets in a tropical environment following a rat eradication program

Journal Articles & Books
Dezembro, 2014

Invasive rodents (primarily Rattus spp.) are responsible for loss of biodiversity in island ecosystems worldwide. Large-scale rodenticide applications are typically used to eradicate rats and restore ecological communities. In tropical ecosystems, environmental conditions rapidly degrade baits and competition for baits by non-target animals can result in eradication failure. Our objective was to evaluate persistence of rodenticide baits during a rat eradication program on Palmyra Atoll; a remote tropical atoll with intense competition for resources by land crabs.

Humans, bees, and pollination services in the city: the case of Chicago, IL (USA)

Journal Articles & Books
Dezembro, 2014
Estados Unidos

Despite the global trend in urbanization, little is known about patterns of biodiversity or provisioning of ecosystem services in urban areas. Bee communities and the pollination services they provide are important in cities, both for small-scale urban agriculture and native gardens. To better understand this important ecological issue, we examined bee communities, their response to novel floral resources, and their potential to provide pollination services in 25 neighborhoods across Chicago, IL (USA).