Density-dependent demography in two grasses: a five-year study.

Ecology | October 1, 1995| | Copyright

Key words: Aristida longiseta: Bouteloua rigidiseta: competition; demography; density-dependent effects; grass; grassland; population regulation.

INTRODUCTION

It is an axiom of ecology that there is some population size (or biomass, for a plant species) beyond which resources will be insufficient to provide all members of the population with all the resources they can use. A corollary of this axiom is that when a population exceeds this size. a shortage of resources will reduce survival and/or reproduction; the larger the population, the smaller the ...

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