文献类型：期刊文献

英文题名：Isotopic niche overlap of two planktivorous fish in southern China

作者：Chen, Gang[1];Wu, Zaohe[1];Gu, Binhe[1];Liu, Dongyan[2];Li, Xin[3];Wang, Yang[3]

机构：[1]Guangdong Ocean Univ, Fishery Coll, Zhanjiang 524000, Peoples R China;[2]Shanghai Normal Univ, Dept Environm Sci, Urban Ecol & Environm Res Ctr, Shanghai 200234, Peoples R China;[3]Florida State Univ, Dept Geol Sci, Natl High Magnet Field Lab, Tallahassee, FL 32306 USA

年份：2011

卷号：12

期号：2

起止页码：151

外文期刊名：LIMNOLOGY

收录：SCI-EXPANDED(收录号：WOS:000292218300006)、、Scopus(收录号：2-s2.0-79959671677)、WOS

语种：英文

外文关键词：Bighead carp; Silver carp; Stable isotope analysis; Trophic niche overlap

外文摘要：The purpose of this study was to assess if there was trophic niche overlap of silver carp (Hypophthalmichthys molitrix) and bighead carp (H. nobilis) in four large freshwater ecosystems from southern China using stable carbon and nitrogen isotopes (delta C-13 and delta N-15). Multivariate analysis of variance (MANOVA) on the delta C-13 and delta N-15 values measured from muscle tissue indicates trophic niche overlap in one unproductive and one highly productive large system and trophic niche segregation in two systems with moderate watershed size and productivity. For these two coexisting planktivorous fish, which were hitherto believed to occupy different trophic niches, this study demonstrated that the degree of their trophic niche overlap varied according to ecosystem properties.