Testing for density dependence allowing for weather effects

被引：32

作者：

Rothery, P ^{[1
]}

Newton, I ^{[1
]}

Dale, L ^{[1
]}

Wesolowski, T ^{[1
]}

机构：

[1] UNIV WROCLAW,DEPT AVIAN ECOL,PL-50335 WROCLAW,POLAND

来源：

OECOLOGIA | 1997年 / 112卷 / 04期

关键词：

density dependence; weather effects; autoregressive model; statistical power; butterfly and songbird populations;

D O I：

10.1007/s004420050340

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

A test for density dependence in time-series data allowing for weather effects is presented. The test is based on a discrete time autoregessive model for changes iu population density with a covariate for the effects of weather. The distribution of the test statistic on the null hypothesis of density independence is obtained by parametric boot strapping, A computer simulation exercise is used to demonstrate the gain in statistical power by allowing for weather effects. Application of the method to time-series data on three species of butterflies and two species of songbirds showed stronger evidence of density dependence than two standard tests.

引用

页码：518 / 523

页数：6

共 22 条

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ANDERSON TW, 1971, STATISTICAL ANAL TIM

[2]

[Anonymous], 1996, ANAL TIME SERIES INT

[3]

BEVAN G, 1976, LOND NAT, V55, P23

[4] STATISTICAL-ANALYSIS OF DENSITY DEPENDENCE [J].