Abstract: Species composition and trophic structure of the
insect community were compared between coastal and central prairies of Texas.
Species diversity was higher in the coastal prairie, but average richness
per habitat and among-habitat diversity were greater in the central prairie.
Insect diversity increased as vertical (woody) components of vegetation were
added to sites in both prairie types. As a result of such among-habitat differences,
both taxonomic and trophic structure also varied among sites within the central,
but not the coastal, prairie, and between coastal prairie and central prairie
habitats. The central prairie contained a greater proportion of Hymenoptera
and Orthoptera, a smaller proportion of Homoptera and Coleoptera, more unique
species, and a lower proportion of predators and detritivores than the coastal
prairie. Such among-site variation in community structure within an ecosystem
must be understood to assess whether conservation plans can be ecosystem-based
or must be site-specific.
Key words: community structure, conservation, entomofauna,
prairie.
This resource is based on the following source:
Cameron, Guy N., and Edwin H. Bryant. 1999. Species composition
and trophic structure of insect communities in Texas prairies. Prairie
Naturalist 31(4):221-242.
This resource should be cited as:
Cameron, Guy N., and Edwin H. Bryant. 1999. Species composition
and trophic structure of insect communities in Texas prairies. Prairie
Naturalist 31(4):221-242. Jamestown, ND: Northern Prairie Wildlife
Research Center Online. http://www.npwrc.usgs.gov/resource/insects/txinsect/index.htm
(Version 23OCT2001).