Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance

Witthoeft-Muehlmann A, Traunspurger W, Rothhaupt KO (2007)
AQUATIC ECOLOGY 41(2): 231-242.

Zeitschriftenaufsatz | Veröffentlicht | Englisch
 
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Abstract / Bemerkung
The littoral nematode community adjacent to a river mouth (River Schussen) on Lake Constance (Germany) was studied from February 1999 to January 2000 in order to determine the influence of stress resulting from fluctuations in river discharge on local nematode assemblages. Additionally, the influence of wind as a second important stress factor was considered. Six sample sites were chosen, reflecting a gradient of river influence within the broader river mouth area. Nematode communities, varying in a mean range from 121 to 165 ind/10 cm(2), were found to differ significantly in terms of abundance, feeding type composition and species diversity. Deposit feeders were most abundant at all sites followed by chewers. Deposit feeders were affected mainly by wind events, while species diversity and the occurrence of chewers were influenced mainly by river discharge. The impact of both these stress factors was modified by a third variable, water level. Moderate and high levels of combined habitat stress led to significant changes in community structure. Under conditions of calm weather and low discharge, reduced species diversity and an increased predominance of deposit feeders were observed. In most cases, species diversity was found to be higher under moderate stress conditions, an observation that offers support for Connel's Intermediate Disturbance Hypothesis.
Stichworte
feeding types; pattern; disturbance; temporal; spatial pattern; habitat stress; diversity
Erscheinungsjahr
2007
Zeitschriftentitel
AQUATIC ECOLOGY
Band
41
Ausgabe
2
Seite(n)
231-242
ISSN
1386-2588
eISSN
1573-5125
Page URI
https://pub.uni-bielefeld.de/record/1593144

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Witthoeft-Muehlmann A, Traunspurger W, Rothhaupt KO. Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance. AQUATIC ECOLOGY. 2007;41(2):231-242.
Witthoeft-Muehlmann, A., Traunspurger, W., & Rothhaupt, K. O. (2007). Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance. AQUATIC ECOLOGY, 41(2), 231-242. doi:10.1007/s10452-006-9076-9
Witthoeft-Muehlmann, A., Traunspurger, W., and Rothhaupt, K. O. (2007). Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance. AQUATIC ECOLOGY 41, 231-242.
Witthoeft-Muehlmann, A., Traunspurger, W., & Rothhaupt, K.O., 2007. Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance. AQUATIC ECOLOGY, 41(2), p 231-242.
A. Witthoeft-Muehlmann, W. Traunspurger, and K.O. Rothhaupt, “Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance”, AQUATIC ECOLOGY, vol. 41, 2007, pp. 231-242.
Witthoeft-Muehlmann, A., Traunspurger, W., Rothhaupt, K.O.: Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance. AQUATIC ECOLOGY. 41, 231-242 (2007).
Witthoeft-Muehlmann, A., Traunspurger, Walter, and Rothhaupt, K. O. “Combined influence of river discharge and wind on littoral nematode communities of a river mouth area of Lake Constance”. AQUATIC ECOLOGY 41.2 (2007): 231-242.