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Invasive earthworms erode soil biodiversity: A meta-analysis
Ferlian, Olga; Eisenhauer, Nico; Aguirrebengoa, Martin; Camara, Mariama; Ramirez-Rojas, Irene; Santos, Fabio; Tanalgo, Krizler; Thakur, Madhav P.
Abstract1. Biological invasions pose a serious threat to biodiversity and ecosystem functioning across ecosystems. Invasions by ecosystem engineers, in particular, have been shown to have dramatic effects in recipient ecosystems. For instance, invasion by earthworms, a below-ground invertebrate ecosystem engineer, in previously earthworm-free ecosystems alters the physico-chemical characteristics of the soil. Studies have shown that such alterations in the soil can have far-reaching impacts on soil organisms, which form a major portion of terrestrial biodiversity. 2. Here, we present the first quantitative synthesis of earthworm invasion effects on soil micro-organisms and soil invertebrates based on 430 observations from 30 independent studies. 3. Our meta-analysis shows a significant decline of the diversity and density of soil invertebrates in response to earthworm invasion with anecic and endogeic earthworms causing the strongest effects. Earthworm invasion effects on soil micro-organisms were context-dependent, such as depending on functional group richness of invasive earthworms and soil depth. Microbial biomass and diversity increased in mineral soil layers, with a weak negative effect in organic soil layers, indicating that the mixing of soil layers by earthworms (bioturbation) may homogenize microbial communities across soil layers. 4. Our meta-analysis provides a compelling evidence for negative effects of a common invasive below-ground ecosystem engineer on below-ground biodiversity of recipient ecosystems, which could potentially alter the ecosystem functions and services linked to soil biota.
KeywordBiodiversity Change Biological Invasion Ecosystem Engineer Soil Invertebrates Soil Micro-organisms
Document Type期刊论文
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GB/T 7714
Ferlian, Olga,Eisenhauer, Nico,Aguirrebengoa, Martin,et al. Invasive earthworms erode soil biodiversity: A meta-analysis[J]. JOURNAL OF ANIMAL ECOLOGY,2018,87(1):162-172.
APA Ferlian, Olga.,Eisenhauer, Nico.,Aguirrebengoa, Martin.,Camara, Mariama.,Ramirez-Rojas, Irene.,...&Thakur, Madhav P..(2018).Invasive earthworms erode soil biodiversity: A meta-analysis.JOURNAL OF ANIMAL ECOLOGY,87(1),162-172.
MLA Ferlian, Olga,et al."Invasive earthworms erode soil biodiversity: A meta-analysis".JOURNAL OF ANIMAL ECOLOGY 87.1(2018):162-172.
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