Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis
Disentangling the effects of plant diversity on the control of herbivores is important for understanding agricultural sustainability. Recent studies have investigated the relationships between plant diversity and arthropod communities at the landscape scale, but few have done so at the local scale. We conducted a meta-analysis of 32 papers containing 175 independent measures of the relationship between plant diversity and arthropod communities. We found that generalist predators had a strong positive response to plant diversity, that is, their abundance increased as plant diversity increased. Herbivores, in contrast, had an overall weak and negative response to plant diversity. However, specialist and generalist herbivores differed in their response to plant diversity, that is, the response was negative for specialists and not significant for generalists. While the effects of scale remain unclear, the response to plant diversity tended to increase for specialist herbivores, but decrease for generalist herbivores as the scale increased. There was no clear effect of scale on the response of generalist predators to plant diversity. Our results suggest that the response of herbivores to plant diversity at the local scale is a balance between habitat and trophic effects that vary according to arthropod specialization and habitat type. Synthesis and applications. Positive effects of plant diversity on generalist predators confirm that, at the local scale, plant diversification of agroecosystems is a credible and promising option for increasing pest regulation. Results from our meta-analysis suggest that natural control in plant-diversified systems is more likely to occur for specialist than for generalist herbivores. In terms of pest management, our results indicate that small-scale plant diversification (via the planting of cover crops or intercrops and reduced weed management) is likely to increase the control of specialist herbivores by generalist predators.
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dig-cirad-fr-5797822024-01-28T23:20:24Z http://agritrop.cirad.fr/579782/ http://agritrop.cirad.fr/579782/ Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis. Dassou Gbèblonoudo Anicet, Tixier Philippe. 2016. Ecology and Evolution, 6 (4) : 1143-1153.https://doi.org/10.1002/ece3.1917 <https://doi.org/10.1002/ece3.1917> Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis Dassou, Gbèblonoudo Anicet Tixier, Philippe eng 2016 Ecology and Evolution H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 Disentangling the effects of plant diversity on the control of herbivores is important for understanding agricultural sustainability. Recent studies have investigated the relationships between plant diversity and arthropod communities at the landscape scale, but few have done so at the local scale. We conducted a meta-analysis of 32 papers containing 175 independent measures of the relationship between plant diversity and arthropod communities. We found that generalist predators had a strong positive response to plant diversity, that is, their abundance increased as plant diversity increased. Herbivores, in contrast, had an overall weak and negative response to plant diversity. However, specialist and generalist herbivores differed in their response to plant diversity, that is, the response was negative for specialists and not significant for generalists. While the effects of scale remain unclear, the response to plant diversity tended to increase for specialist herbivores, but decrease for generalist herbivores as the scale increased. There was no clear effect of scale on the response of generalist predators to plant diversity. Our results suggest that the response of herbivores to plant diversity at the local scale is a balance between habitat and trophic effects that vary according to arthropod specialization and habitat type. Synthesis and applications. Positive effects of plant diversity on generalist predators confirm that, at the local scale, plant diversification of agroecosystems is a credible and promising option for increasing pest regulation. Results from our meta-analysis suggest that natural control in plant-diversified systems is more likely to occur for specialist than for generalist herbivores. In terms of pest management, our results indicate that small-scale plant diversification (via the planting of cover crops or intercrops and reduced weed management) is likely to increase the control of specialist herbivores by generalist predators. article info:eu-repo/semantics/article Journal Article info:eu-repo/semantics/publishedVersion http://agritrop.cirad.fr/579782/7/ece31917.pdf text cc_by info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by/4.0/ https://doi.org/10.1002/ece3.1917 10.1002/ece3.1917 info:eu-repo/semantics/altIdentifier/doi/10.1002/ece3.1917 info:eu-repo/semantics/altIdentifier/purl/https://doi.org/10.1002/ece3.1917 |
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H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 |
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H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 Dassou, Gbèblonoudo Anicet Tixier, Philippe Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
description |
Disentangling the effects of plant diversity on the control of herbivores is important for understanding agricultural sustainability. Recent studies have investigated the relationships between plant diversity and arthropod communities at the landscape scale, but few have done so at the local scale. We conducted a meta-analysis of 32 papers containing 175 independent measures of the relationship between plant diversity and arthropod communities. We found that generalist predators had a strong positive response to plant diversity, that is, their abundance increased as plant diversity increased. Herbivores, in contrast, had an overall weak and negative response to plant diversity. However, specialist and generalist herbivores differed in their response to plant diversity, that is, the response was negative for specialists and not significant for generalists. While the effects of scale remain unclear, the response to plant diversity tended to increase for specialist herbivores, but decrease for generalist herbivores as the scale increased. There was no clear effect of scale on the response of generalist predators to plant diversity. Our results suggest that the response of herbivores to plant diversity at the local scale is a balance between habitat and trophic effects that vary according to arthropod specialization and habitat type. Synthesis and applications. Positive effects of plant diversity on generalist predators confirm that, at the local scale, plant diversification of agroecosystems is a credible and promising option for increasing pest regulation. Results from our meta-analysis suggest that natural control in plant-diversified systems is more likely to occur for specialist than for generalist herbivores. In terms of pest management, our results indicate that small-scale plant diversification (via the planting of cover crops or intercrops and reduced weed management) is likely to increase the control of specialist herbivores by generalist predators. |
format |
article |
topic_facet |
H01 - Protection des végétaux - Considérations générales F40 - Écologie végétale L20 - Écologie animale H10 - Ravageurs des plantes lutte biologique lutte antiravageur biodiversité interactions biologiques agroécosystème Arthropoda herbivore prédateur relation plante animal plante de culture chaîne alimentaire habitat biocénose http://aims.fao.org/aos/agrovoc/c_918 http://aims.fao.org/aos/agrovoc/c_5726 http://aims.fao.org/aos/agrovoc/c_33949 http://aims.fao.org/aos/agrovoc/c_49896 http://aims.fao.org/aos/agrovoc/c_36669 http://aims.fao.org/aos/agrovoc/c_635 http://aims.fao.org/aos/agrovoc/c_3567 http://aims.fao.org/aos/agrovoc/c_6163 http://aims.fao.org/aos/agrovoc/c_32513 http://aims.fao.org/aos/agrovoc/c_1972 http://aims.fao.org/aos/agrovoc/c_3014 http://aims.fao.org/aos/agrovoc/c_3456 http://aims.fao.org/aos/agrovoc/c_912 |
author |
Dassou, Gbèblonoudo Anicet Tixier, Philippe |
author_facet |
Dassou, Gbèblonoudo Anicet Tixier, Philippe |
author_sort |
Dassou, Gbèblonoudo Anicet |
title |
Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
title_short |
Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
title_full |
Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
title_fullStr |
Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
title_full_unstemmed |
Response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
title_sort |
response of pest control by generalist predators to local-scale plant diversity: a meta-analysis |
url |
http://agritrop.cirad.fr/579782/ http://agritrop.cirad.fr/579782/7/ece31917.pdf |
work_keys_str_mv |
AT dassougbeblonoudoanicet responseofpestcontrolbygeneralistpredatorstolocalscaleplantdiversityametaanalysis AT tixierphilippe responseofpestcontrolbygeneralistpredatorstolocalscaleplantdiversityametaanalysis |
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