Details zur Publikation

Kategorie Textpublikation
Referenztyp Zeitschriften
DOI 10.1007/s10531-007-9165-7
Volltext Shareable Link
Titel (primär) The importance of water-level fluctuation for the conservation of shallow water benthic macroinvertebrates: an example in the Andean zone of Chile
Autor Valdovinos, C.; Moya, C.; Olmos, V.; Parra, O.; Karrasch, B.; Büttner, O.
Journal / Serie Biodiversity and Conservation
Erscheinungsjahr 2007
Department SEEFO; FLOEK
Band/Volume 16
Heft 11
Seite von 3095
Seite bis 3109
Sprache englisch
Daten-/Softwarelinks https://doi.org/10.1594/PANGAEA.890102
Keywords benthic macroinvertebrates; water-level fluctuations; lake ecosystem; Chile
Abstract Many researchers have shown the importance of water chemistry and benthic habitat characteristics for the conservation of the freshwater macroinvertebrate biodiversity. However, few authors have examined the physical effect of extreme water-level fluctuations in lakes. The present study set out to determine, through a comparative study between a regulated lake (Laja Lake, LL) and an unregulated lake (Icalma Lake, IL) of the Andean zone of southern Chile, how man-made disturbances of the natural hydrological regime affect the structure of the benthic macroinvertebrate community. The results showed LL had very low values for species richness, density and biomass in comparison with IL, and the community was composed mainly of few individuals belonging to opportunistic taxa such as Chironomidae and Naididae. We suggest that the low values in the regulated lake are potentially explained by littoral zone factors driven by the water-level fluctuations such as: desiccation, freezing of the biota, removal of organic particles from the sediment and absence of aquatic macrophytes.
dauerhafte UFZ-Verlinkung https://www.ufz.de/index.php?en=20939&ufzPublicationIdentifier=2382
Valdovinos, C., Moya, C., Olmos, V., Parra, O., Karrasch, B., Büttner, O. (2007):
The importance of water-level fluctuation for the conservation of shallow water benthic macroinvertebrates: an example in the Andean zone of Chile
Biodivers. Conserv. 16 (11), 3095 - 3109