نتایج جستجو برای: indicator species
تعداد نتایج: 618489 فیلتر نتایج به سال:
Assessing the utility of indicator groups for the conservation of South American terrestrial mammals
Because data on the distribution of most species are limited, prioritizing sites for conservation requires the use of indicator groups to represent overall diversity. The purpose of this study is to assess the utility of different subsets of the South American mammal fauna in representing the overall diversity of South American terrestrial mammals, percentage of endangered and restricted-range ...
The use of static indicator species, in which species are expected to have a similar sensitivity or tolerance to either natural or human-induced stressors, does not account for possible shifts in tolerance along natural environmental gradients and between biogeographic regions. Their indicative value may therefore be considered at least questionable. In this paper we demonstrate how species res...
palatability includes plants physical and chemical property that encourages an animal selecta plant for grazing. this study is an attempt for intruducing an indicator for determining thepalatability of rangeland plants. to do this, the relationship between palatability and foragequality of rangeland plants in karsanak rangelands of the chaharmahal-va-bakhtiari provincewas studied. first, plant ...
Indicator taxa are commonly used to identify priority areas for conservation or to measure biological responses to environmental change. Despite their widespread use, there is no general consensus about the ability of indicator taxa to predict wider trends in biodiversity. Many studies have focused on large-scale patterns of species co-occurrence to identify areas of high biodiversity, threat o...
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