Temporal constancy in grasshopper assemblies (Orthoptera: Acrididae) |
| |
Authors: | ANTHONY JOERN KENNETH P PRUESS† |
| |
Institution: | School of Biological Sciences, University of Nebraska-Lincoln;Department of Entomology, University of Nebraska-Lincoln |
| |
Abstract: | ABSTRACT. - 1 Temporal constancy in the structure of grasshopper assemblies (about forty-five species each) from two types of North American grasslands was assessed; one site was followed 25 years and the other 7 years.
- 2 Densities and relative abundances varied but composition of assemblies based on ranks suggested significant structure when three or more species were included in the analysis.
- 3 Results compared favourably with other insect herbivore assemblies which have been examined; variability in population change was intermediate along the spectrum of organisms which have been studied.
|
| |
Keywords: | Assembly constancy grasshoppers population variability North American grasslands |
|