Litter Spider Communities and their Effects on Invertebrate Fauna and Decomposing Rates in Nanjenshan Rain Forest, Taiwan

IF 0.4 4区 环境科学与生态学 Q4 ECOLOGY
P. Hou, Hao-Chiang Chien, Ren-tao Liu, Y. Steinberger
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引用次数: 1

Abstract

ABSTRACT Spiders are among the most important predators in forest litter layer that control food chain and decomposition process. However, little is known about the changes in litter-spider communities from wind-exposed to wind-shielded areas during monsoon seasons, and their roles in litter arthropod distribution and decomposition processes. In the present study, the densities and diversities of the spider communities in litter were examined at the two locations in monsoon and non-monsoon seasons in southern Taiwan. Enclosures with/without the spider Ctenus yaeyamensi were set up to compare litter arthropod distribution and decomposition rates in litterbags in different sampling units. It was found that the mean density of litter spiders was significantly greater in wind-shielded area than wind-exposed area. There was a marked impact of structure and depth of litter layers on guild composition, but not on the diversity indices of the litter spider communities. The litter invertebrates and decomposition rates did not differ between enclosures with/without spiders. However, there was a marked difference in litter arthropod abundance between monsoon and non-monsoon seasons in wind-exposed areas. The decomposition rate was remarkably greater in non-monsoon seasons than in monsoon seasons, whereas there were no marked differences between wind-shielded and wind-exposed locations. It was concluded that litter arthropod distribution and related decomposition were affected by variation of monsoon seasons but not by spider presence/absence in Nanjenshan Rain Forest.
台湾南仁山雨林蜘蛛群落及其对无脊椎动物区系和分解率的影响
摘要蜘蛛是森林垃圾层中最重要的捕食者之一,控制着食物链和分解过程。然而,人们对季风季节暴露在挡风区的落叶蜘蛛群落的变化及其在落叶节肢动物分布和分解过程中的作用知之甚少。本研究在台湾南部的季风季节和非季风季节对两个地点的蜘蛛群落的密度和多样性进行了研究。建立了有/没有yaeyamensi Ctenus蜘蛛的围栏,以比较不同采样单元中垃圾节肢动物在垃圾袋中的分布和分解率。结果表明,风遮蔽区的窝蛛平均密度明显大于风暴露区。枯枝落叶层的结构和深度对群落组成有显著影响,但对枯枝落叶蜘蛛群落的多样性指数没有显著影响。有蜘蛛和没有蜘蛛的围栏之间的垃圾无脊椎动物和分解率没有差异。然而,在风暴露地区,季风季节和非季风季节的枯枝落叶节肢动物丰度存在显著差异。非季风季节的分解率明显高于季风季节,而挡风和暴露在风中的位置之间没有显著差异。结果表明,南仁山雨林枯枝落叶节肢动物的分布及相关分解受季风季节变化的影响,而不受蜘蛛存在与否的影响。
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来源期刊
Polish Journal of Ecology
Polish Journal of Ecology 环境科学-生态学
CiteScore
1.10
自引率
0.00%
发文量
9
审稿时长
18-36 weeks
期刊介绍: POLISH JOURNAL OF ECOLOGY (formerly Ekologia polska) publishes original scientific research papers dealing with all aspects of ecology: both fundamental and applied, physiological ecology, evolutionary ecology, ecology of population, community, ecosystem, landscape as well as global ecology. There is no bias regarding taxons, ecosystems or geographical regions.
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