Cargando…
Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community
In the light of ongoing land use changes, it is important to understand how multitrophic communities perform at different land use intensities. The paradox of enrichment predicts that fertilization leads to destabilization and extinction of predator-prey systems. We tested this prediction for a land...
Autores principales: | , , , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Public Library of Science
2012
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493510/ https://www.ncbi.nlm.nih.gov/pubmed/23145055 http://dx.doi.org/10.1371/journal.pone.0049034 |
_version_ | 1782249276023242752 |
---|---|
author | Meyer, Katrin M. Vos, Matthijs Mooij, Wolf M. Hol, W. H. Gera Termorshuizen, Aad J. van der Putten, Wim H. |
author_facet | Meyer, Katrin M. Vos, Matthijs Mooij, Wolf M. Hol, W. H. Gera Termorshuizen, Aad J. van der Putten, Wim H. |
author_sort | Meyer, Katrin M. |
collection | PubMed |
description | In the light of ongoing land use changes, it is important to understand how multitrophic communities perform at different land use intensities. The paradox of enrichment predicts that fertilization leads to destabilization and extinction of predator-prey systems. We tested this prediction for a land use intensity gradient from natural to highly fertilized agricultural ecosystems. We included multiple aboveground and belowground trophic levels and land use-dependent searching efficiencies of insects. To overcome logistic constraints of field experiments, we used a successfully validated simulation model to investigate plant responses to removal of herbivores and their enemies. Consistent with our predictions, instability measured by herbivore-induced plant mortality increased with increasing land use intensity. Simultaneously, the balance between herbivores and natural enemies turned increasingly towards herbivore dominance and natural enemy failure. Under natural conditions, there were more frequently significant effects of belowground herbivores and their natural enemies on plant performance, whereas there were more aboveground effects in agroecosystems. This result was partly due to the “boom-bust” behavior of the shoot herbivore population. Plant responses to herbivore or natural enemy removal were much more abrupt than the imposed smooth land use intensity gradient. This may be due to the presence of multiple trophic levels aboveground and belowground. Our model suggests that destabilization and extinction are more likely to occur in agroecosystems than in natural communities, but the shape of the relationship is nonlinear under the influence of multiple trophic interactions. |
format | Online Article Text |
id | pubmed-3493510 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2012 |
publisher | Public Library of Science |
record_format | MEDLINE/PubMed |
spelling | pubmed-34935102012-11-09 Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community Meyer, Katrin M. Vos, Matthijs Mooij, Wolf M. Hol, W. H. Gera Termorshuizen, Aad J. van der Putten, Wim H. PLoS One Research Article In the light of ongoing land use changes, it is important to understand how multitrophic communities perform at different land use intensities. The paradox of enrichment predicts that fertilization leads to destabilization and extinction of predator-prey systems. We tested this prediction for a land use intensity gradient from natural to highly fertilized agricultural ecosystems. We included multiple aboveground and belowground trophic levels and land use-dependent searching efficiencies of insects. To overcome logistic constraints of field experiments, we used a successfully validated simulation model to investigate plant responses to removal of herbivores and their enemies. Consistent with our predictions, instability measured by herbivore-induced plant mortality increased with increasing land use intensity. Simultaneously, the balance between herbivores and natural enemies turned increasingly towards herbivore dominance and natural enemy failure. Under natural conditions, there were more frequently significant effects of belowground herbivores and their natural enemies on plant performance, whereas there were more aboveground effects in agroecosystems. This result was partly due to the “boom-bust” behavior of the shoot herbivore population. Plant responses to herbivore or natural enemy removal were much more abrupt than the imposed smooth land use intensity gradient. This may be due to the presence of multiple trophic levels aboveground and belowground. Our model suggests that destabilization and extinction are more likely to occur in agroecosystems than in natural communities, but the shape of the relationship is nonlinear under the influence of multiple trophic interactions. Public Library of Science 2012-11-08 /pmc/articles/PMC3493510/ /pubmed/23145055 http://dx.doi.org/10.1371/journal.pone.0049034 Text en © 2012 Meyer et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited. |
spellingShingle | Research Article Meyer, Katrin M. Vos, Matthijs Mooij, Wolf M. Hol, W. H. Gera Termorshuizen, Aad J. van der Putten, Wim H. Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title | Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title_full | Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title_fullStr | Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title_full_unstemmed | Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title_short | Testing the Paradox of Enrichment along a Land Use Gradient in a Multitrophic Aboveground and Belowground Community |
title_sort | testing the paradox of enrichment along a land use gradient in a multitrophic aboveground and belowground community |
topic | Research Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3493510/ https://www.ncbi.nlm.nih.gov/pubmed/23145055 http://dx.doi.org/10.1371/journal.pone.0049034 |
work_keys_str_mv | AT meyerkatrinm testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity AT vosmatthijs testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity AT mooijwolfm testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity AT holwhgera testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity AT termorshuizenaadj testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity AT vanderputtenwimh testingtheparadoxofenrichmentalongalandusegradientinamultitrophicabovegroundandbelowgroundcommunity |