Record details

    Coenocline reconstruction using graph theory and Bayesian probability data generator
    Čejchan, Petr
    United Kingdom -Visegrad Frontiers of Science Symposium (4. : 21.02.2007-23.02.2007 : Krakow, Polsko)
Publication type
Source title - monograph
    United Kingdom - Visegrad Four Frontiers of Science Symposium
    S. 1-2
    Rozsah: 2 s.
    Výzkumný záměr: CEZ:AV0Z30130516
Subject category
    gradient anaysis
Abstract (in english)
   The goal is to design a novel way to reconstruct the 'species response function (SRFs) of unitary organisms on an unidimensional environmental/time gradient solely from abundance data on species communities (`indirect gradient analysis'. The word 'indirect' means that the gradient itself is latent, is not accessible, or even is presumed. The study will focus on the topology of the problem, thus disregarding the quantitative measuring of 'sample scores'. Formally, this task can be termed 'seriation of fossil communities (assemblages)'. Bayesian inference is used here to "squeeze' the population density distributions out of observed species' abundances. A large number of generated hypotheses serve to derive probability density functions of sample ranks, which are the result of the analysis.
    AV ČR Brno, Geologický ústav
Contributor code
    AV ČR, GLÚ
Source format
Import date
    8. 8. 2012