Data from: Demographic responses of a site-faithful and territorial predator to its fluctuating prey: long-tailed skuas and arctic lemmings ...
1. Environmental variability, through interannual variation in food availability or climatic variables, is usually detrimental to population growth. It can even select for constancy in key life-history traits, though some exceptions are known. Changes in the level of environmental variability are th...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Dataset |
| Language: | English |
| Published: |
Dryad
2013
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.5061/dryad.8041k https://datadryad.org/stash/dataset/doi:10.5061/dryad.8041k |
| Summary: | 1. Environmental variability, through interannual variation in food availability or climatic variables, is usually detrimental to population growth. It can even select for constancy in key life-history traits, though some exceptions are known. Changes in the level of environmental variability are therefore important to predict population growth or life-history evolution. Recently, several cyclic vole and lemming populations have shown large dynamical changes, that might affect rodent predator demography or life histories. 2. Skuas constitute an important case study among rodent predators, because of their strongly saturating breeding productivity (they lay only two eggs) and high degree of site fidelity, in which they differ from nomadic predators raising large broods in good rodent years. This suggests that they cannot capitalize on lemming peaks to the same extent as nomadic predators, and might be more vulnerable to collapses of rodent cycles. 3. We develop a model for the population dynamics of ... : FBarraquand et al. J Anim Ecol 2013 Data and CodeContains the field data pertaining to skua reproduction and lemming densities from the study sites at Karupelv, Traill Island, and Zackenberg (both in Greenland). See cited papers by O. Gilg and N.M. Schmidt in Barraquand et al. for a more complete description of the data and study sites characteristics. The code part of this folder includes all Matlab and Gnuplot scripts that have been used to produce the figures in the paper. ... |
|---|