What individual life histories can (and cannot) tell about population dynamics

被引：15

作者：

De Roos A.M. ^{[1
]}

McCauley E. ^{[2
]}

Nisbet R.M. ^{[3
]}

Gurney W.S.C. ^{[4
]}

Murdoch W.W. ^{[3
]}

机构：

[1] Population Biology Section, University of Amsterdam, Kruislaan 320

[2] Department of Biological Sciences, University of Calgary, Calgary

[3] Dept. of Ecol. Evol. and Mar. Biol., University of California, Santa Barbara

[4] Dept. of Stat. and Modelling Science, University of Strathclyde, Glasgow

来源：

Aquatic Ecology | 1997年 / 31卷 / 1期

关键词：

Life History; Structure Population; Ingestion Rate; Food Condition; Population Model;

D O I：

10.1023/A:1009995420368

中图分类号：

学科分类号：

摘要：

We present an overview of a long-term research programme that is aimed at revealing the relations between individual feeding, growth, reproduction and mortality in Daphnia pulex and the state and dynamics of the population. We analyse a physiologically structured population model, in which individual performance is described using an energy budget model that incorporates a food dependence. The model predictions are shown to be at odds with experimental observations on populations of Daphnia. We argue that these discrepancies are primarily due to insufficient knowledge about the precise size-scaling of the food ingestion rate, which plays a central role in the competitive interaction among individuals. To a lesser extent, the discrepancies arise because details about the energy budget of individual Daphnia are not sufficiently known for the food conditions prevailing in population experiments.

引用

页码：37 / 45

页数：8

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