Effects of carrion decomposition on litter arthropod assemblages,Ecological Entomology

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Effects of carrion decomposition on litter arthropod assemblages
Ecological Entomology ( IF 2.0 ) Pub Date : 2020-07-04 , DOI: 10.1111/een.12910
Samantha J. Sawyer ₁ , Christopher P. Bloch ₁

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Many organisms contribute to the decomposition of carrion. For arthropods, many studies focus on the necrophagous community, those directly consuming carrion. Necrophagous arthropods use carrion as a shelter or food source. Therefore, carrion generally increases the abundance and biodiversity of necrophagous species. However, it is unclear if carrion has similar effects on detrital communities. This study examines changes in community structure and composition of necrophilous and detrital communities over the course of decomposition. Five pig head carrion were placed at least 7 m apart under cages in temperate mixed forest. Leaf litter was sampled 0 m, 1.5 m, and 3 m from each carrion weekly during summer, and monthly during autumn, until the first frost. Arthropods were extracted from leaf litter by using Berlese funnels. At the carrion site, necrophagous insects increased in abundance, species richness, and Shannon diversity during decomposition, and all decreased after dry decay. Detritus arthropods displayed a sharp increase in abundance during advanced decay, decreasing during dry decay, and a general increase over time for species richness and diversity. In conclusion, carrion can influence the surrounding, non‐necrophagous arthropod community, highlighting the need to investigate carrion effects beyond typical necrophagous species to have a more holistic understanding of carrion ecology.

中文翻译：

腐肉分解对凋落物节肢动物组合的影响

许多生物有助于腐肉的分解。对于节肢动物，许多研究都集中在直接食用腐肉的食尸性群落上。食尸性节肢动物使用腐肉作为庇护所或食物来源。因此，腐肉通常会增加食尸性物种的丰度和生物多样性。然而，目前还不清楚腐肉是否对碎屑群落有类似的影响。本研究检查了在分解过程中，亲死和碎屑群落的群落结构和组成的变化。在温带混交林的笼子下放置五只猪头腐肉，间距至少为 7 m。在夏季每周从每个腐肉中抽取 0 m、1.5 m 和 3 m 的落叶样本，在秋季每月采样，直到第一次霜冻。节肢动物是通过使用伯利兹漏斗从落叶中提取的。在腐肉现场，腐食性昆虫在分解过程中的丰度、物种丰富度和香农多样性增加，而在干腐后则全部减少。碎屑节肢动物在高级腐烂期间显示出丰度急剧增加，在干腐期间减少，并且随着时间的推移物种丰富度和多样性普遍增加。总之，腐肉可以影响周围的非腐食性节肢动物群落，这突出表明需要研究除典型腐食性物种之外的腐肉影响，以更全面地了解腐肉生态。随着时间的推移，物种丰富度和多样性普遍增加。总之，腐肉可以影响周围的非腐食性节肢动物群落，这突出表明需要研究除典型腐食性物种之外的腐肉影响，以更全面地了解腐肉生态。随着时间的推移，物种丰富度和多样性普遍增加。总之，腐肉可以影响周围的非腐食性节肢动物群落，这突出表明需要研究除典型腐食性物种之外的腐肉影响，以更全面地了解腐肉生态。

更新日期：2020-07-04

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