Academic Journals Database
Disseminating quality controlled scientific knowledge

Statistical analysis of polychaete population density: dynamics of dominant species and scaling properties in relative abundance fluctuations

ADD TO MY LIST
 
Author(s): B. Quiroz-Martinez | F. G. Schmitt | J.-C. Dauvin

Journal: Nonlinear Processes in Geophysics
ISSN 1023-5809

Volume: 19;
Issue: 1;
Start page: 45;
Date: 2012;
VIEW PDF   PDF DOWNLOAD PDF   Download PDF Original page

ABSTRACT
We consider here the dynamics of two polychaete populations based on a 20 yr temporal benthic survey of two muddy fine sand communities in the Bay of Morlaix, Western English Channel. These populations display high temporal variability, which is analyzed here using scaling approaches. We find that population densities have heavy tailed probability density functions. We analyze the dynamics of relative species abundance in two different communities of polychaetes by estimating in a novel way a "mean square drift" coefficient which characterizes their fluctuations in relative abundance over time. We show the usefulness of using new tools to approach and model such highly variable population dynamics in marine ecosystems.
Affiliate Program      Why do you need a reservation system?