Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

ZHAO Xiaoxia; Michael G. FOX; David C. LASENBY; Alexis C. ARMIT; Dolly N. KOTHAWALA

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Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

机译：加拿大安大略河中等足类天竺葵的底物选择和丰度和大小组成的季节性变化

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The abundance and size composition of stream isopods Lirceus fontinalis were investigated from April 2001 to August 2002 in 3 streams in southern Ontario, Canada. Effects of current speed was released from the analysis by choosing slow flowing water. The effects of substrate, season and water depth on the abundance, distribution and size composition of the isopods were analyzed. It was found that substrate and season influence isopods the most. The rocky substrate with attached filamentous macro-algae contains an isopod abundance 7.05 times that of bare rock substrate and 14.6 times that of fine-sand and mud substrate. There was a large variation with respect to seasonality in both abundance and size composition of the isopods, with the highest abundance occurring in summer and the lowest in winter and spring; individual isopods also tend to be larger in the winter and spring. In all substrates,shallow areas tend to support higher densities of isopods than deeper areas.

机译：2001年4月至2002年8月，在加拿大安大略省南部的3条溪流中调查了异形脚形天牛（Lirceus fontinalis）的丰度和大小组成。通过选择缓慢流动的水，可以从分析中释放当前速度的影响。分析了底物，季节和水深对等足动物数量，分布和大小组成的影响。发现底物和季节影响等足动物最多。附有丝状大型藻类的岩石基质的等足度丰度为裸岩基质的7.05倍，细砂和泥质基质的等足量为14.6倍。等足类动物的丰度和大小组成在季节性上有很大的差异，丰度最高的发生在夏季，而冬季和春季最低。在冬季和春季，单个等足动物也往往更大。在所有基质中，浅层区域倾向于比深层区域支持更高的等足动物密度。

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来源
《中国海洋湖沼学报（英文版）》 |2007年第2期|215-220|共6页
作者
ZHAO Xiaoxia; Michael G. FOX; David C. LASENBY; Alexis C. ARMIT; Dolly N. KOTHAWALA;
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作者单位

Watershed Ecosystems Graduate Program,Trent University,Peterborough,Ontario,K9J 7B8,Canada;

Environmental & Resource Studies Program and Department of Biology,Trent University,Peterborough,ON,K9J 7B8,Canada;

Department of Biology,Trent University,Peterborough,ON,K9J 7B8,Canada;

Watershed Ecosystems Graduate Program,Trent University,Peterborough,Ontario,K9J 7B8,Canada;

Watershed Ecosystems Graduate Program,Trent University,Peterborough,Ontario,K9J 7B8,Canada;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类海洋学;
关键词
isopods; Lirceusfontinalis; size; abundance; substrate; seasonal variation; Ontario;

机译：等足类动物;天牛座;大小;丰度;基质;季节变化;安大略;

Substrate selection and seasonal variation in abundance and size composition of isopod Lirceus fontinalis in Ontario streams, Canada

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