Add to ORKGLine-transect sampling was used to obtain abundance estimates of an Ant-eating Chat Myrmecocichla formicivora population to compare these with the true size of the population. The population size was determined by a long-term banding study, and abundance estimates were obtained by surveying line transects. The sampling effort was quadrupled to determine potential improvements in accuracy and precision. Abundance estimates of the single surveys differed up to 19.8% from the true number of birds and showed relatively high coefficients of variation. Estimates of the cumulative analyses only differed up to 5.8% while coefficients of variation improved considerably, and provided thus reliable population estimates compared with the true number of...
In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead...
Highly mobile species are difficult to monitor. It is often unclear from abundance estimates whether...
Comparative studies have found that, when different sampling methods are used in the same habitat, e...
The quantification of ant nest densities is a useful but challenging task given the group's high abu...
In this book, the authors cover the basic methods and advances within distance sampling that are mos...
We used the distance detection function from five-minute point counts entirely within large woody ve...
During a survey of terrestrial arthropods in the central Orange Free State we collected a sample of ...
Capsule: Population estimates based on the mark–resighting method can be a useful alternative to pop...
Point-tran sect sampling is widely used for monitoring trends in abundance of songbirds. It is conce...
Distance sampling is a widely used group of closely related methods for estimating the density and/o...
Distance sampling is used to estimate number of indi- viduals in an area of interest. The idea is th...
1. Distance sampling is a widely used technique for estimating the size or density of biological pop...
Estimates of bird numbers through quantification of density and range sizes are necessary for decis...
<div><p>Estimates of bird numbers through quantification of density and range sizes are necessary fo...
Bird atlases have become an important source of distribution data for broad-scale analyses in ecolog...
In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead...
Highly mobile species are difficult to monitor. It is often unclear from abundance estimates whether...
Comparative studies have found that, when different sampling methods are used in the same habitat, e...
The quantification of ant nest densities is a useful but challenging task given the group's high abu...
In this book, the authors cover the basic methods and advances within distance sampling that are mos...
We used the distance detection function from five-minute point counts entirely within large woody ve...
During a survey of terrestrial arthropods in the central Orange Free State we collected a sample of ...
Capsule: Population estimates based on the mark–resighting method can be a useful alternative to pop...
Point-tran sect sampling is widely used for monitoring trends in abundance of songbirds. It is conce...
Distance sampling is a widely used group of closely related methods for estimating the density and/o...
Distance sampling is used to estimate number of indi- viduals in an area of interest. The idea is th...
1. Distance sampling is a widely used technique for estimating the size or density of biological pop...
Estimates of bird numbers through quantification of density and range sizes are necessary for decis...
<div><p>Estimates of bird numbers through quantification of density and range sizes are necessary fo...
Bird atlases have become an important source of distribution data for broad-scale analyses in ecolog...
In many bird monitoring Surveys, no attempt is made to estimate bird densities or abundance. instead...
Highly mobile species are difficult to monitor. It is often unclear from abundance estimates whether...
Comparative studies have found that, when different sampling methods are used in the same habitat, e...