منابع مشابه
On species occupancy-abundance models
One of the most pronounced generalizations in macroecology is the positive interspecific relationship between the distribution and abundance of species. Understanding of this relationship comes in two forms: statistical descriptions and insight into the biological mechanisms. Several statistical and mathematical models have been used to describe, to summarize, to interpret, and to predict the p...
متن کاملCan Occupancy–Abundance Models Be Used to Monitor Wolf Abundance?
Estimating the abundance of wild carnivores is of foremost importance for conservation and management. However, given their elusive habits, direct observations of these animals are difficult to obtain, so abundance is more commonly estimated from sign surveys or radio-marked individuals. These methods can be costly and difficult, particularly in large areas with heavy forest cover. As an altern...
متن کاملExploration of Trends in Interspecific Abundance-Occupancy Relationships Using Empirically Derived Simulated Communities
The interspecific abundance-occupancy relationship (AOR) is a widely used tool that describes patterns of habitat utilization and, when evaluated over time, may be used to identify large-scale changes in community structure. Our primary goal for this research was to validate the utility of AORs as temporal indicators of community state. We used long-term survey data in four regions of the north...
متن کاملExplaining abundance-occupancy relationships in specialists and generalists: a case study on aquatic macroinvertebrates in standing waters.
1. A positive interspecific abundance-occupancy relationship is one of the most robust patterns in macroecology. Yet, the mechanisms driving this pattern are poorly understood. Here, we use biological traits of freshwater macroinvertebrates to gain a mechanistic understanding and disentangle the various explanations. We ask whether mechanisms underlying the abundance-occupancy relationship diff...
متن کاملExploring the abundance-occupancy relationships for the Georges Bank finfish and shellfish community from 1963 to 2006.
Abundance-occupancy (A-O) patterns were explored temporally and spatially for the Georges Bank finfish and shellfish community to evaluate long-term trends in the assemblage structure and to identify anthropogenic and environmental drivers impacting the ecosystem. Analyses were conducted for 32 species representing the assemblage from 1963 to 2006 using data from the National Marine Fisheries S...
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ژورنال
عنوان ژورنال: Journal of Applied Ecology
سال: 2000
ISSN: 0021-8901,1365-2664
DOI: 10.1046/j.1365-2664.2000.00485.x