森林片断组成和结构对地栖节肢动物群落的影响

IF 0.6 4区 环境科学与生态学 Q4 Agricultural and Biological Sciences
Andrea L. Myers, J. Marshall
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引用次数: 1

摘要

摘要栖息地破碎化是减少栖息地面积,同时增加栖息地斑块数量和隔离的过程。尽管印第安纳州的大部分土地在历史上都被连片的森林覆盖,但剩余的森林现在严重分散。在印第安纳州东北部尤其如此,那里的农业是主要的土地利用覆盖类型。印第安纳州东北部功能性森林的丧失可能导致区域范围内生物多样性的丧失。地面节肢动物经常被用作森林健康的生物指示类群。我们对印第安纳州东北部10个典型的森林植物群落进行了表征,并对这些森林中的地面节肢动物群落进行了盘点。利用森林中的植物群落和环境异质性来评估森林的复杂性,并将地面节肢动物群落与森林环境特征进行比较。我们的森林比较揭示了植物群落和结构的异质性差异。虽然在非度量多维尺度排序图中,林上和林下的多样性、成分异质性和枯枝落叶层深度确实对节肢动物群落的相对差异产生了影响,但这些群落在所有森林斑块中都是相似的。然而,这些相同的环境变量对节肢动物的总体丰度、丰富度或多样性没有直接影响。尽管森林结构和组成确实存在差异,但节肢动物群落具有很高的相似性,尤其是在8月份。由于该地区的森林在类型和结构上相似,节肢动物群落的林间比较在组成、丰度、丰富度和多样性方面显示出相应的相似性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Influence of Forest Fragment Composition and Structure on Ground-Dwelling Arthropod Communities
Abstract. Habitat fragmentation is the process of reducing habitat area while increasing the number and isolation of habitat patches. Although much of Indiana's land area was historically covered with contiguous forests, remaining forests are now heavily fragmented. This is especially true in northeastern Indiana where agriculture is the dominant land use cover type. Loss of functional forests in northeast Indiana could lead to a loss of biodiversity at a regional scale. Ground-dwelling arthropods have been used frequently as biological indicator taxa of forest health. We characterized 10 typical northeast Indiana forest plant communities and inventoried ground-dwelling arthropod communities within those forests. Plant community and environmental heterogeneity within forests were used to assess forest complexity, and ground-dwelling arthropod communities were compared to forest environmental characteristics. Our forest comparisons revealed plant community and structural heterogeneity differences. While overstory and understory diversity, compositional heterogeneity, and litter depth did have influence on arthropod communities' relative dissimilarities in nonmetric multidimensional scaling ordination plots, those communities were similar across all forest patches. However, those same environmental variables did not have direct influence on overall arthropod abundance, richness, or diversity. Even though differences did occur in forest structure and composition, arthropod communities had high similarity values, especially in August. As the forests in the region are similar in type and structure, between-forest comparisons of arthropod communities showed corresponding similarities in composition, abundance, richness, and diversity.
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来源期刊
American Midland Naturalist
American Midland Naturalist 环境科学-生态学
CiteScore
1.20
自引率
0.00%
发文量
38
审稿时长
18-36 weeks
期刊介绍: The American Midland Naturalist has been published for 90 years by the University of Notre Dame. The connotations of Midland and Naturalist have broadened and its geographic coverage now includes North America with occasional articles from other continents. The old image of naturalist has changed and the journal publishes what Charles Elton aptly termed "scientific natural history" including field and experimental biology. Its significance and breadth of coverage are evident in that the American Midland Naturalist is among the most frequently cited journals in publications on ecology, mammalogy, herpetology, ornithology, ichthyology, parasitology, aquatic and invertebrate biology and other biological disciplines.
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