Jolly Seber method

The Jolly Seber method is a statistical population biological model for the recapture of animals in ecological research . Animals from open populations, ie in which immigration and emigration is possible, are caught and marked. The biggest difference to other methods, such as B. the "Schnabel method" is the inclusion of information about the date of the capture of a marked individual.

development

At the end of the 1950s, the biologist JN Darroch (1959) developed capture-recapture experiments for populations, taking into account the factors immigration or mortality. Six years later, Jolly (1965) and Seber (1965) refined the methodology by developing the method named after them that takes both factors into account.

The model was further developed by Cormack into the Cormack-Jolly-Seber model for heterogeneous populations.

methodology

In the Jolly-Seber procedure, animals are marked and then released again. The peculiarity of this method is that the date of catch is taken into account when marking and is marked with appropriate indicators. This allows a distinction to be made between the animals with different catch dates. Theoretical discussions on the algorithm used are described in Southwood (1978) .

The Jolly Seber method can make approximate statements about the population size based on a single data set. It is possible to specify the mortality or emigration and birth or immigration rates for each specific day. These rates are assumed to be meaningful for all, including the unmarked dates.

The method has been modified and refined by various scientists.

See also

• Conservation Biology

Publications

Technical article

• Carl J. Scharz (2000): The Jolly-Seber model: more than just abundance (PDF; 200 kB)

Individual evidence

1. ↑ http://www.phidot.org/software/mark/docs/book/pdf/chap13.pdf
2. ↑ Archived copy ( Memento of the original from May 3, 2005 in the Internet Archive ) Info: The archive link was inserted automatically and has not yet been checked. Please check the original and archive link according to the instructions and then remove this notice. 
3. ^ Biometrics. 2003 Dec; 59 (4): 786-94. Open capture-recapture models with heterogeneity: I. Cormack-Jolly-Seber model. Pledger S, Pollock KH, Norris JL.
4. ^ Southwood, TRE: Ecological methods, with particular reference to the study of insect populations. Chapman & Hall, London, 1978. ISBN 0470264101
5. ↑ http://www.ma.utexas.edu/users/davis/375/popecol/lec2/caprecap.html
6. ↑ Including Stephen T. Buckland, http://www.jstor.org/pss/2530211