Grassland management effects on earthworm communities under ambient and future climatic conditions

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Singh , J , Cameron , E , Reitz , T , Schädler , M & Eisenhauer , N 2021 , ' Grassland management effects on earthworm communities under ambient and future climatic conditions ' , European Journal of Soil Science , vol. 72 , no. 1 , pp. 343-355 . https://doi.org/10.1111/ejss.12942

Title: Grassland management effects on earthworm communities under ambient and future climatic conditions
Author: Singh, Jaswinder; Cameron, Erin; Reitz, Thomas; Schädler, Martin; Eisenhauer, Nico
Contributor: University of Helsinki, Faculty of Biological and Environmental Sciences
Date: 2021-01
Language: eng
Number of pages: 13
Belongs to series: European Journal of Soil Science
ISSN: 1351-0754
URI: http://hdl.handle.net/10138/333656
Abstract: Abstract The impacts of climate change on biodiversity can be modulated by other changing environmental conditions, e.g. induced by land-use change. The potential interactive effects of climate change and land use have rarely been studied for soil organisms. To test the effects of changing climatic conditions and land use on soil invertebrates, we examined earthworm communities across different seasons in different grassland-use types (intensively managed grassland, extensively managed meadow, and extensively managed sheep pasture).We predicted that the strength of climate change effects would vary with season and land use. Overall, extracted earthworm populations showed the strongest variations in response to the season, indicating major differences in activity patterns and extraction efficiency, while climate change and different grassland-use types had fewer and weaker effects. Future climate, characterized by slightly higher precipitation in spring and fall but a strong reduction during the summer, had positive effects on the abundance of extracted adult earthworms in spring but then reduced the abundance of active earthworms across the remaining seasons. In contrast, the total biomass of juveniles tended to be consistently lower under future climate conditions. Earthworm species responded differently to the climate change and different grassland management types, and these species-specific responses further varied strongly across seasons. Intensive grassland management had negative effects, due to plant community composition, while sheep grazing favoured earthworm populations, due to dung deposition. There were only limited interactive effects between climate and land use, which thus did not support our main hypothesis. Nevertheless, these results highlight the complex and context-dependent responses of earthworm communities and activity patterns to climate change, with potential consequences for long-term population dynamics and crucial ecosystem functions. This article is protected by copyright. All rights reserved.
Subject: 1181 Ecology, evolutionary biology
Climate change
Drought
earthworms
Ecosystem engineers
Land use types
Land-use intensity
Soil biodiversity
Warming
BIODIVERSITY
ELEVATED CO2
SOIL FOOD WEBS
INTENSIFICATION
PLANT DIVERSITY
land-use intensity
climate change
PASTURES
land use types
soil biodiversity
RESPONSES
drought
warming
NITROGEN
CONSEQUENCES
LAND-USE
ecosystem engineers
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