Stability and changes of biomass of emerging insects and their possible causes

Zwick, Peter

Item

ITEM ACTIONSEXPORT

Add to Basket

Local TagsRelease HistoryDetailsSummary

Released

Journal Article

Stability and changes of biomass of emerging insects and their possible causes

MPS-Authors

/persons/resource/persons57026

Zwick, Peter
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

External Resource

No external resources are shared

Fulltext (restricted access)

There are currently no full texts shared for your IP range.

Fulltext (public)

There are no public fulltexts stored in PuRe

Supplementary Material (public)

There is no public supplementary material available

Citation

Zwick, P. (1984). Stability and changes of biomass of emerging insects and their possible causes. Verhandlungen der Internationalen Vereinigung für Theoretische und Angewandte Limnologie, 22(3), 2037-2041.

Cite as: https://hdl.handle.net/11858/00-001M-0000-000F-CB2A-B

Abstract

In Breitenbach, Federal Republic of Germany there is a downstream increase of daily as well as annual temperature amplitudes on the 2 km stretch between a large spring entering the stream and its mouth into the Fulda River. The importance of this thermal gradient for longitudinal zonation of Ephemeroptera , Plecoptera and Trichoptera is reevaluated. Less species than previously suggested are actually affected. A regular upstream increase of abundance is observed only in 3 species, but these include 2 of the most important secondary producers of the stream community, which is dominated by oligo-stenothermal species. More species exhibit a downstream increase of abundance , but none of these more polyeurythermal ones is among the numerically important species in the stream. Distribution and abundance of most species in the stream are irregular and apparently determined by other factors such as substrate composition at the stream bottom. (Baker-IVI)