SIZE-RELATED SHIFTS IN THE PHYSICAL HABITAT OF 2 MAYFLY SPECIES (EPHEMEROPTERA)

被引：16

作者：

BUFFAGNI, A ^{[1
]}

CROSA, G ^{[1
]}

MARCHETTI, R ^{[1
]}

机构：

[1] UNIV MILAN,DIPARTIMENTO SCI AMBIENTE & TERR,SEZ ECOL,I-20126 MILAN,ITALY

来源：

FRESHWATER BIOLOGY | 1995年 / 34卷 / 02期

关键词：

D O I：

10.1111/j.1365-2427.1995.tb00889.x

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

1. The spatial niche shifts of the nymphs of two mayfly species (Rhithrogena semicolorata and Ecdyonurus sp. gr. venosus) in relation to their growth were investigated in two lowland springs of northern Italy where they are dominant species. 2. Ordination of the different size classes of the two species revealed a canonical trend related to season and bottom roughness. 3. Larger nymphs of both species colonized rougher substrata. Differences between species in the roughness of areas colonized by small nymphs, which were very numerous, may have been due to competition for space.

引用

页码：297 / 302

页数：6

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