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Can I read Fluctuations of Density and Survival of Carabid Populations on EtoBox?
Fluctuations of Density and Survival of Carabid Populations by P. J. den Boer is a Environmental Science article available to read on EtoBox.
What is Fluctuations of Density and Survival of Carabid Populations about?
Standardized and all-year pitfall-sampling during a number of years gives reliable estimates of the yearly changes in size (year-catches) of the local breeding populations (interaction groups) of carabid species. From sampling runs at 89 sites, 2,893 estimates of coefficients of net reproduction (R) of 64 carabid species were obtained. The R-values of all species appeared to be lognormally distributed (LND). For each species realistic fluctuations of density could thus be simulated after estimation of mean and standard deviation of the fitted LND (Appendix). Simulation results were compared with field data in two ways: 1. The range between highest and lowest density (logarithmic range: LR), only for those sampling runs of 4-12 years that are not interrupted by zero year-catches. These LR-values were compared with those from simulated runs at similar catch-levels (n), i.e. runs with the highest catch between 1/2·3 and 1/2·3 , if n=1, 2,..., 7. As the number of uninterrupted (by zero year-catches) time series of catches decreases at lower catch-levels, by which the distribution of LR-values becomes skewed, each sampling run from the field could only be compared with simulations at th
Who reads Fluctuations of Density and Survival of Carabid Populations?
It is typically read by researchers, students, and practitioners in Environmental Science.
- Author
- P. J. den Boer
- Publisher
- Springer-Verlag; Springer Verlag; Springer Science and Business Media LLC (ISSN 0029-8549)
- Published
- 1985
- Language
- EN
- Field
- Environmental Science (Physical Sciences)