نتایج جستجو برای: grazed and ungrazed area
تعداد نتایج: 16875616 فیلتر نتایج به سال:
Pihlgren, A. 2007. Small-scale structures and grazing intensity in semi-natural pastures effects on plants and insects. Doctor’s dissertation. ISSN 1652-6880, ISBN 91-576-7312-1. Semi-natural grasslands characterized by nutrient poor soils are among the most species-rich habitats in Europe and they harbour many red-listed species. The area of semi-natural grasslands has decreased drastically du...
Forest edges can strongly affect avian nest success by altering nest predation rates, but this relationship is inconsistent and context dependent. There is a need for researchers to improve the predictability of edge effects on nest predation rates by examining the mechanisms driving their occurrence and variability. In this study, we examined how the capture rates of ship rats, an invasive nes...
Wissman, J. 2006. Grazing regimes and plant reproduction in semi–natural grasslands. The dominating grazing regime in semi-natural grasslands today is continuous grazing throughout the season, and a high grazing pressure is often advised in order to avoid litter accumulation. Traditional management, on the other hand, included late mowing and grazing, which favoured plant flowering and seed pro...
Ecological restoration is widely used to mitigate the negative impacts of anthropogenic activities. There an increasing demand identify suitable management strategies for specific habitat and disturbance types restore interactions between organisms degraded habitats, such as pollination. In Tibetan Plateau, alpine meadows have suffered severe degradation due overgrazing climate change. Protecti...
Understanding determinants of local species diversity remains central to developing plans to preserve biodiversity. In the continental United States, climate, grazing by large mammals, fire, and topography are important ecosystem drivers that structure North American tallgrass prairie, with major impacts on plant community composition and vegetation structure. Frequency of fire and grazing by b...
The terrestrial vegetation of Dover and Erith Islands is comprised oflow forest dominated by Allocasuarina verticillataor Myrtaceae species (including Eucalyptus nitida, Melaleuca ericifolia and Leptospermum laevigatum), closed-scrub, heath, Poa poiformis tussock grassland and a wide variety of coastal vegetation types. While Dover Island, which is infrequently burned and ungrazed by stock, is ...
Abstract Among the many diversity indices in ecologist toolbox, measures that can be partitioned into additive terms are particularly useful as different components related to ecological processes shaping community structure. In this paper, an decomposition is proposed partition structure of a given three complementary fractions: functional diversity, redundancy and species dominance. These sum...
The spatial distribution of feral ferret (Mustela furo) activity and denning were studied using ink-print tracking tunnels and radio-tracking within pastoral farmland containing a mosaic of grazed (developed and semideveloped) and ungrazed pasture, scrub, tree plantation and scrubby fence lines at Palmerston, East Otago, South Island, New Zealand. Ferrets concentrated their activity in grazed a...
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