Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis
Insect herbivory can have important consequences for the functioning of terrestrial ecosystems. Despite a growing recognition of the role of herbivores in above-ground–below-ground interactions, our current understanding is mainly restricted to studies of vertebrates in grassland and tundra ecosyste...
Published in: | Journal of Ecology |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Wiley-Blackwell
2020
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Online Access: | https://lup.lub.lu.se/record/3c2882ec-d42d-4afc-9190-c00adfcd42c4 https://doi.org/10.1111/1365-2745.13319 |
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ftulundlup:oai:lup.lub.lu.se:3c2882ec-d42d-4afc-9190-c00adfcd42c4 2023-05-15T18:40:39+02:00 Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis Kristensen, Jeppe Rousk, Johannes Metcalfe, Daniel B. 2020-05 https://lup.lub.lu.se/record/3c2882ec-d42d-4afc-9190-c00adfcd42c4 https://doi.org/10.1111/1365-2745.13319 eng eng Wiley-Blackwell https://lup.lub.lu.se/record/3c2882ec-d42d-4afc-9190-c00adfcd42c4 http://dx.doi.org/10.1111/1365-2745.13319 scopus:85076794020 Journal of Ecology; 108(3), pp 917-930 (2020) ISSN: 0022-0477 Ecology above–below-ground interactions biogeochemistry element cycling forest ecology herbivory insects plant–soil (below-ground) interactions soil ecology contributiontojournal/article info:eu-repo/semantics/article text 2020 ftulundlup https://doi.org/10.1111/1365-2745.13319 2023-02-01T23:39:58Z Insect herbivory can have important consequences for the functioning of terrestrial ecosystems. Despite a growing recognition of the role of herbivores in above-ground–below-ground interactions, our current understanding is mainly restricted to studies of vertebrates in grassland and tundra ecosystems, while ecosystems with tree-like canopies (termed forests below) and invertebrates remain understudied. Here, we assess the current state of knowledge of one key aspect of plant–herbivore interactions by conducting a meta-analysis of the peer-reviewed literature on the below-ground consequences of above-ground insect herbivory in forest ecosystems. Main results are reported as aggregated relative effect sizes (Cohen's d). We find that above-ground insect herbivory reduced below-ground carbon (C) allocation by plants to roots (−0.56) and root exudation (−0.85), causing shifts in root–symbiont communities, for example, a decrease (−0.67) in the abundance of ectomycorrhizal fungi. Microbial decomposer abundances showed no significant responses, while soil faunal abundances increased (0.50). C and nitrogen (N) mineralization rates (C: 0.48, N: 0.48) along with nutrient leaching (C: 0.30, N: 0.77) increased, with a stronger response to outbreak relative to background insect densities. The negative responses increased in strength in colder and dryer biomes while positive responses were reinforced in warmer and wetter biomes, thus extending previously shown effects for vertebrate herbivores to also include insect herbivory. The positive response by soil fauna to insect herbivory was the notable exception. This may be associated with the limited physical soil disturbance caused by insects compared to ungulates. Furthermore, we identified an under-representation in the literature of large areas of boreal and tropical biomes calling for research priorities to fill these knowledge gaps. We present three recommendations for future research: addressing (a) biological drivers of biogeochemistry and response pathways, (b) ... Article in Journal/Newspaper Tundra Lund University Publications (LUP) Journal of Ecology 108 3 917 930 |
institution |
Open Polar |
collection |
Lund University Publications (LUP) |
op_collection_id |
ftulundlup |
language |
English |
topic |
Ecology above–below-ground interactions biogeochemistry element cycling forest ecology herbivory insects plant–soil (below-ground) interactions soil ecology |
spellingShingle |
Ecology above–below-ground interactions biogeochemistry element cycling forest ecology herbivory insects plant–soil (below-ground) interactions soil ecology Kristensen, Jeppe Rousk, Johannes Metcalfe, Daniel B. Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
topic_facet |
Ecology above–below-ground interactions biogeochemistry element cycling forest ecology herbivory insects plant–soil (below-ground) interactions soil ecology |
description |
Insect herbivory can have important consequences for the functioning of terrestrial ecosystems. Despite a growing recognition of the role of herbivores in above-ground–below-ground interactions, our current understanding is mainly restricted to studies of vertebrates in grassland and tundra ecosystems, while ecosystems with tree-like canopies (termed forests below) and invertebrates remain understudied. Here, we assess the current state of knowledge of one key aspect of plant–herbivore interactions by conducting a meta-analysis of the peer-reviewed literature on the below-ground consequences of above-ground insect herbivory in forest ecosystems. Main results are reported as aggregated relative effect sizes (Cohen's d). We find that above-ground insect herbivory reduced below-ground carbon (C) allocation by plants to roots (−0.56) and root exudation (−0.85), causing shifts in root–symbiont communities, for example, a decrease (−0.67) in the abundance of ectomycorrhizal fungi. Microbial decomposer abundances showed no significant responses, while soil faunal abundances increased (0.50). C and nitrogen (N) mineralization rates (C: 0.48, N: 0.48) along with nutrient leaching (C: 0.30, N: 0.77) increased, with a stronger response to outbreak relative to background insect densities. The negative responses increased in strength in colder and dryer biomes while positive responses were reinforced in warmer and wetter biomes, thus extending previously shown effects for vertebrate herbivores to also include insect herbivory. The positive response by soil fauna to insect herbivory was the notable exception. This may be associated with the limited physical soil disturbance caused by insects compared to ungulates. Furthermore, we identified an under-representation in the literature of large areas of boreal and tropical biomes calling for research priorities to fill these knowledge gaps. We present three recommendations for future research: addressing (a) biological drivers of biogeochemistry and response pathways, (b) ... |
format |
Article in Journal/Newspaper |
author |
Kristensen, Jeppe Rousk, Johannes Metcalfe, Daniel B. |
author_facet |
Kristensen, Jeppe Rousk, Johannes Metcalfe, Daniel B. |
author_sort |
Kristensen, Jeppe |
title |
Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
title_short |
Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
title_full |
Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
title_fullStr |
Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
title_full_unstemmed |
Below-ground responses to insect herbivory in ecosystems with woody plant canopies : A meta-analysis |
title_sort |
below-ground responses to insect herbivory in ecosystems with woody plant canopies : a meta-analysis |
publisher |
Wiley-Blackwell |
publishDate |
2020 |
url |
https://lup.lub.lu.se/record/3c2882ec-d42d-4afc-9190-c00adfcd42c4 https://doi.org/10.1111/1365-2745.13319 |
genre |
Tundra |
genre_facet |
Tundra |
op_source |
Journal of Ecology; 108(3), pp 917-930 (2020) ISSN: 0022-0477 |
op_relation |
https://lup.lub.lu.se/record/3c2882ec-d42d-4afc-9190-c00adfcd42c4 http://dx.doi.org/10.1111/1365-2745.13319 scopus:85076794020 |
op_doi |
https://doi.org/10.1111/1365-2745.13319 |
container_title |
Journal of Ecology |
container_volume |
108 |
container_issue |
3 |
container_start_page |
917 |
op_container_end_page |
930 |
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1766230057043361792 |