Disentangling grazing effects: trampling, defoliation and urine deposition
نویسندگان
چکیده
منابع مشابه
Herbivore grazing—or trampling? Trampling effects by a large ungulate in cold high‐latitude ecosystems
Mammalian herbivores have important top-down effects on ecological processes and landscapes by generating vegetation changes through grazing and trampling. For free-ranging herbivores on large landscapes, trampling is an important ecological factor. However, whereas grazing is widely studied, low-intensity trampling is rarely studied and quantified. The cold-adapted northern tundra reindeer (Ra...
متن کاملTrampling, defoliation and physiological integration affect growth, morphological and mechanical properties of a root-suckering clonal tree.
BACKGROUND AND AIMS Grazing is a complex process involving the simultaneous occurrence of both trampling and defoliation. Clonal plants are a common feature of heavily grazed ecosystems where large herbivores inflict the simultaneous pressures of trampling and defoliation on the vegetation. We test the hypothesis that physiological integration (resource sharing between interconnected ramets) ma...
متن کاملTrampling Effects on Coastal Dune
Long-term human trampling on coastal dune vegetation was analysed using eight 100 × 100m study areas ranging in trampling intensity JJ'om little or no past trampling pressure to severe trampling pressure. All trampling levels significantly reduced species diversity. Total vegetation cover was significantly reduced only in areas with severe and heavy trampling pressure. Where long-term moderate ...
متن کاملDisentangling niche competition from grazing mortality in phytoplankton dilution experiments
The dilution method is the principal tool used to infer in situ microzooplankton grazing rates. However, grazing is the only mortality process considered in the theoretical model underlying the interpretation of dilution method experiments. Here we evaluate the robustness of mortality estimates inferred from dilution experiments when there is concurrent niche competition amongst phytoplankton. ...
متن کاملLivestock grazing and trampling of birds’ nests: an experiment using artificial nests
The purpose of this study is to experimentally determine the differences between four grazing treatments on the trampling of nests. Additionally, we examine to what extent the trampling probability of nests is higher close to a source of fresh water. We compare the trampling of artificial nests in five different grazing treatments in an experimental design. We use buried clay pigeon targets as ...
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ژورنال
عنوان ژورنال: Applied Vegetation Science
سال: 2016
ISSN: 1402-2001,1654-109X
DOI: 10.1111/avsc.12250