Emergenz-Untersuchungen an einem Mittelgebirgsbach bei Bonn VII. Empididen- und 
Dolichopodiden-Emergenz 1976 (Insecta, Diptera, Brachycera) Investigatiions on 
the insect emergence from a woodland brook near Bonn VII. Emergence of 
Empididae and Dolichopodidae in 1976 (Insecta, Diptera, Brachycera) Schlitzer 
produktionsbiologische Studien (46)

Caspers, Norbert; Wagner, Rüdiger

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Emergenz-Untersuchungen an einem Mittelgebirgsbach bei Bonn VII. Empididen- und Dolichopodiden-Emergenz 1976 (Insecta, Diptera, Brachycera) Investigatiions on the insect emergence from a woodland brook near Bonn VII. Emergence of Empididae and Dolichopodidae in 1976 (Insecta, Diptera, Brachycera) Schlitzer produktionsbiologische Studien (46)

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Caspers, Norbert
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

/persons/resource/persons56984

Wagner, Rüdiger
Limnological River Station Schlitz, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society;

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引用

Caspers, N., & Wagner, R. (1982). Emergenz-Untersuchungen an einem Mittelgebirgsbach bei Bonn VII. Empididen- und Dolichopodiden-Emergenz 1976 (Insecta, Diptera, Brachycera) Investigatiions on the insect emergence from a woodland brook near Bonn VII. Emergence of Empididae and Dolichopodidae in 1976 (Insecta, Diptera, Brachycera) Schlitzer produktionsbiologische Studien (46). Archiv für Hydrobiologie, 93(2), 209-237.

引用: https://hdl.handle.net/11858/00-001M-0000-000F-CBA9-B

要旨

The 1976 emergence rate of Empididae and Dolichopodidae (Insecta, Diptera, Brachycera) from a woodland stream near Bonn was investigated by the greenhouse method developed by Illies (1971). The list of species (Empididae: 82 spp.; Dolichopodidae: 24 spp.) is presented with additional remarks on larval ecology, adult phenology and the biogeographical distribution patterns of all the species involved. With 0.701 g 1.7 m² . yr., aquatic Empididae (10 spp.; 1265 individuals) amounted to 3.4% of the total insects that emerged in 1976. Aquatic Dolichopodidae (13 spp.; 2611 individuals) contributed 1786 g 1.7 m² . yr. and 8.6% to the total catch of merolimnic insects. As the present knowledge on larval behavior and substrate preferences of both groups is still poor, the above-mentioned figures may even be higher. Species composition, abundances and emergence biomass of both groups are discussed comparatively for Annaberger Bach (Bonn) and Breitenbach (Schlitz) (Wagner 1980) to demonstrate the basic differences between an astatic woodland stream with a high import of allochthonous material and a meadow stream with autochthonous plant communities.