Study

Effects of mountain stream restoration on carabid beetles and grasshoppers in Thuringia and Hessen, Germany

  • Published source details Armbruster J. (2001) Der Einfluss von Renaturierungen in Mittelgebirgsauen auf die Laufkäfer-und Heuschreckenfauna (The influence of restoration projects in Mittelgebirgsauen on ground beetles and grasshoppers fauna). Mitteilungen der deutschen Gesellschaft für allgemeine und angewandte Entomologie, 13, 369-371

Summary

Stream restorations may affect the fauna living in habitats adjacent to streams.

This study compared communities of carabid beetles and grasshoppers along restored reaches of mountain streams with those in artificially straightened stream reaches in Thuringia and Hesse, Germany.

No information was provided on the methods of stream restoration, except that the restored stream reaches had increased channel dynamics.

Examples of four habitats - river bank, annually cut meadow, shrub stand and permanent grassland - were studied alongside restored and unrestored reaches of streams. Four pitfall traps (8.5 cm in diameter, filled with diethylene glycol) were installed in each habitat type for 14 days. Traps were emptied four times from April to July and twice in August. Hand sampling was also conducted.

Species of both carabid beetle and grasshopper associated with riparian and swamp habitats were more dominant alongside restored reaches than in unrestored reaches. In contrast, alongside restored reaches there were 20 to 60% fewer species (and individuals) characteristic of open landscapes.

The authors conclude that communities of carabid beetles and grasshoppers rapidly respond to stream restorations.

Output references

What Works in Conservation

What Works in Conservation provides expert assessments of the effectiveness of actions, based on summarised evidence, in synopses. Subjects covered so far include amphibians, birds, terrestrial mammals, forests, peatland and control of freshwater invasive species. More are in progress.

More about What Works in Conservation

Download free PDF or purchase
The Conservation Evidence Journal

The Conservation Evidence Journal

An online, free to publish in, open-access journal publishing results from research and projects that test the effectiveness of conservation actions.

Read latest volume: Volume 17

Go to the CE Journal

Subscribe to our newsletter

Please add your details if you are interested in receiving updates from the Conservation Evidence team about new papers, synopses and opportunities.

Who uses Conservation Evidence?

Meet some of the evidence champions

Endangered Landscape Programme Red List Champion - Arc Kent Wildlife Trust The Rufford Foundation Save the Frogs - Ghana Bern wood Supporting Conservation Leaders National Biodiversity Network Sustainability Dashboard Frog Life The international journey of Conservation - Oryx British trust for ornithology Cool Farm Alliance UNEP AWFA Butterfly Conservation People trust for endangered species Vincet Wildlife Trust