Web spider community response along an edge between pasture and Araucaria forest

被引：43

作者：

Baldissera, R ^{[1
]}

Ganade, G ^{[1
]}

Fontoura, SB ^{[1
]}

机构：

[1] Univ Vale Rio dos Sinos, UNISINOS, Lab Ecol Restauracao, Ctr 2, BR-93022000 Sao Leopoldo, RS, Brazil

来源：

BIOLOGICAL CONSERVATION | 2004年 / 118卷 / 03期

关键词：

web spiders; edge effects; Araucaria forest; temporal variation; vegetation features;

D O I：

10.1016/j.biocon.2003.09.017

中图分类号：

X176 [生物多样性保护];

学科分类号：

090705 ;

摘要：

We investigated how vegetation features and temporal variation influenced web spider richness, abundance and composition along an edge between Araucaria forest and pasture in southern Brazil. Web spiders and vegetation were surveyed four times over a 1-year period, in five 5 x 5 m plots randomised in four locations: 50 m into the pasture, 0, 50 and 250 m into the forest. We collected a total of 836 web spiders (33 morphospecies and six families). We found different web spider assemblages occurring at the pasture edge and forest interior. The richness and abundance of web spiders decreased up to 50 m towards the forest interior in all seasons, and we found a positive influence of vegetation richness on web spider abundance. In conclusion, web spider assemblages are influenced by an edge gradient, this pattern is consistent throughout the year and is strongly related to vegetation features. (C) 2003 Elsevier Ltd. All rights reserved.

引用

页码：403 / 409

页数：7

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