✦ LIBER ✦

Gastropods on Submersed Macrophytes in Yangtze Lakes: Community Characteristics and Empirical Modelling

✍ Scribed by Hai-Jun Wang; Bao-Zhu Pan; Xiao-Min Liang; Hong-Zhu Wang

Book ID: 102282588
Publisher: John Wiley and Sons
Year: 2006
Tongue: English
Weight: 317 KB
Volume: 91
Category: Article
ISSN: 1434-2944
DOI: 10.1002/iroh.200510846

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✦ Synopsis

Abstract

Epiphytic gastropods in Yangtze lakes have suffered from large‐scale declines of submersed macrophytes during past decades. To better understand what controls gastropod community, monthly investigations were carried out in four Yangtze lakes during December, 2001–March, 2003. Composed of 23 species belonging to Pulmonata and Prosobranchia, the community is characterized by the constitution of small individuals. The average density and biomass were 417 ± 160 ind/m^2^ and 18.05 ± 7.43 g/m^2^, with maxima around August. Submersed macrophyte biomass is shown to be the key factor affecting species number, density, and biomass of gastropods. Accordingly, a series of annual and seasonal models yielding high predictive powers were generated. Preference analyses demonstrated that pulmonates and prosobranchs with different respiratory organs prefer different macrophyte functional groups. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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