Results 281 to 290 of about 6,846,802 (336)
Some of the next articles are maybe not open access.
Comparing species abundance models
Ecological Modelling, 2006(Uploaded by Plazi for the Bat Literature Project) Five regression models (Poisson, negative binomial, quasi-Poisson, the hurdle model and the zero-inflated Poisson) were used to assess the relationship between the abundance of a vulnerable plant species, Leionema ralstonii, and the environment.
Potts, Joanne M., Elith, Jane
openaire +1 more source
1993
Abstract How many individuals of each species are there in a given community, and why? These questions, which lie at the heart of ecology, continue to motivate much ecological research. In this chapter one approach to answering these questions will be considered, i.e. the detection and interpretation of patterns of species abundance that
Sean Nee, Paul H Harvey, Peter Cotgreave
openaire +1 more source
Abstract How many individuals of each species are there in a given community, and why? These questions, which lie at the heart of ecology, continue to motivate much ecological research. In this chapter one approach to answering these questions will be considered, i.e. the detection and interpretation of patterns of species abundance that
Sean Nee, Paul H Harvey, Peter Cotgreave
openaire +1 more source
Species abundance distributions over time
Ecology Letters, 2007AbstractIt has been known for 50 years that the time period over which data are collected affects the shape of empirical species abundance distributions. However, despite a recent resurgence of interest in characterizing and explaining these patterns the temporal component of species abundance distributions has been largely ignored.
openaire +2 more sources
Road densities and species abundance
2009 17th International Conference on Geoinformatics, 2009Roads form a complex system to connect people and goods. In recent years, the economic development and population increase have led to the active construction of new roads and railways. Therefore, as the human activities increase, the density of roads also escalates.
null Yi-Fang Chen, W.W. Chen
openaire +1 more source
Species abundance distributions
Ecology Letters, 2007Species abundance distributions (SADs) follow one of ecology's oldest and most universal laws - every community shows a hollow curve or hyperbolic shape on a histogram with many rare species and just a few common species. Here, we review theoretical, empirical and statistical developments in the study of SADs. Several key points emerge.
McGill, Brian J. +17 more
openaire +1 more source
Extrapolating Species Abundance Across Spatial Scales
Science, 1998The analysis, measurement, and management of species abundance is central to ecology and conservation biology, but it has proved difficult to find a single index that adequately reflects the commonness or rarity of species across a range of spatial scales.
openaire +2 more sources
Invariance in species-abundance distributions
Theoretical Ecology, 2008Many attempts to explain the species-abundance distribution (SAD) assume that it has a universal functional form which applies to most assemblages. However, if such a form does exist, then it has to be invariant under changes in the area of the study plot (the addition of neighboring areas or subdivision of the original area) and changes in taxonomic ...
Arnošt L. Šizling +3 more
openaire +1 more source
The form of species-abundance distributions
Journal of Theoretical Biology, 1980Abstract Small, isolated communities in harsh environments are sometimes found to contain many, very rare species together with a few, extremely abundant ones. The species-abundance distribution (frequencies of species vs. abundance levels) drops rapidly from an initial peak to an elongated tail.
openaire +2 more sources
On species occupancy-abundance models
Écoscience, 2002One of the most pronounced generalizations in macroecology is the positive interspecific relationship between the distribution and abundance of species.
Fangliang He, Kevin Gaston, Jianguo Wu
openaire +1 more source
, 2015
Applied Hierarchical Modeling in Ecology: Distribution, Abundance, Species Richness offers a new synthesis of the state-of-the-art of hierarchical models for plant and animal distribution, abundance, and community characteristics such as species richness
M. Kéry, J. Andrew Royle
semanticscholar +1 more source
Applied Hierarchical Modeling in Ecology: Distribution, Abundance, Species Richness offers a new synthesis of the state-of-the-art of hierarchical models for plant and animal distribution, abundance, and community characteristics such as species richness
M. Kéry, J. Andrew Royle
semanticscholar +1 more source