Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems

9 páginas,3 figuras, 1 tabla.

Detalles Bibliográficos
Autores: Gera, Alessandro, Pagès, Jordi F., Romero, Javier, Alcoverro, Teresa
Tipo de recurso: artículo
Fecha de publicación:2013
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/93078
Acceso en línea:http://hdl.handle.net/10261/93078
Access Level:acceso abierto
Palabra clave:Sarpa salpa
Seagrass
Mediterranean
Paracentrotus lividus
Patch selection
Patch size
Plant responses
Plant–herbivore interactions
Posidonia oceanica
id ES_a1f9dedb3984f95b4d9ebb7d8e846fd4
oai_identifier_str oai:digital.csic.es:10261/93078
network_acronym_str ES
network_name_str España
repository_id_str
spelling Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystemsGera, AlessandroPagès, Jordi F.Romero, JavierAlcoverro, TeresaSarpa salpaSeagrassMediterraneanParacentrotus lividusPatch selectionPatch sizePlant responsesPlant–herbivore interactionsPosidonia oceanica9 páginas,3 figuras, 1 tabla.1. Fragmentation is a major agent for seagrass meadow decline, yet little is known about how it interacts with processes like herbivory, an important functional driver of seagrass meadows. The interaction with external stressors like fragmentation could exacerbate the effects of internal ecosystem drivers like herbivory, with distinct implications for ecosystem management. 2. We used manipulative field experiments to assess these interactive effects in two Posidonia oceanica seagrass meadows. We monitored replicated plots in small and large patches in two meadows suffering fragmentation with and without herbivores (using exclusion cages) to test whether fragment size and herbivory could act together to alter ecosystem functioning. We measured changes in defoliation rates, primary production, canopy height and nutrient content in all plots after 4 months of herbivore exclusion. 3. Our results show that herbivores increased defoliation rates resulting in reduced primary production, nutrient content and canopy structure (canopy height). Patch size (fragment) on its own also reduced primary production, nutrient content and canopy structure. We also observed significant additive interactions between herbivores and fragmentation on canopy structure and production responses. In addition, small patches showed nutrient limitation but were able to accumulate more carbohydrate reserves, probably due to a higher light availability. This may explain why small patches can persist under significant herbivore pressure. 4. Synthesis. While fragmentation has already been identified as an important external agent of seagrass decline, the combination of fragmentation and herbivory can seriously exacerbate structural losses and affect primary production, profoundly compromising the role of seagrasses as habitatforming ecosystems. These interactions between external stressors and internal drivers may result in large unexpected consequences that may flow on to the rest of the ecosystem.This research has been funded by the Spanish Ministry of Science and Innovation (projects CTM2010-22273- C02-01 and 02). The Consejo Superior de Investigaciones Científicas (CSIC) supported A.G. (scholarship JAEPre_08_00466) and the Spanish Ministry of Education supported J.P. (scholarship AP2008-01601).Peer reviewedWiley-BlackwellMinisterio de Economía y Competitividad (España)201420142013info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/93078reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-48027-C3-3-Rhttp://dx.doi.org/10.1111/1365-2745.12109info:eu-repo/semantics/openAccessoai:digital.csic.es:10261/930782026-05-22T06:33:51Z
dc.title.none.fl_str_mv Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
title Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
spellingShingle Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
Gera, Alessandro
Sarpa salpa
Seagrass
Mediterranean
Paracentrotus lividus
Patch selection
Patch size
Plant responses
Plant–herbivore interactions
Posidonia oceanica
title_short Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
title_full Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
title_fullStr Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
title_full_unstemmed Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
title_sort Combined effects of fragmentation and herbivory on Posidonia oceanica seagrass ecosystems
dc.creator.none.fl_str_mv Gera, Alessandro
Pagès, Jordi F.
Romero, Javier
Alcoverro, Teresa
author Gera, Alessandro
author_facet Gera, Alessandro
Pagès, Jordi F.
Romero, Javier
Alcoverro, Teresa
author_role author
author2 Pagès, Jordi F.
Romero, Javier
Alcoverro, Teresa
author2_role author
author
author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
dc.subject.none.fl_str_mv Sarpa salpa
Seagrass
Mediterranean
Paracentrotus lividus
Patch selection
Patch size
Plant responses
Plant–herbivore interactions
Posidonia oceanica
topic Sarpa salpa
Seagrass
Mediterranean
Paracentrotus lividus
Patch selection
Patch size
Plant responses
Plant–herbivore interactions
Posidonia oceanica
description 9 páginas,3 figuras, 1 tabla.
publishDate 2013
dc.date.none.fl_str_mv 2013
2014
2014
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/93078
url http://hdl.handle.net/10261/93078
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO/Plan Estatal de Investigación Científica y Técnica y de Innovación 2013-2016/CTM2013-48027-C3-3-R
http://dx.doi.org/10.1111/1365-2745.12109
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Wiley-Blackwell
publisher.none.fl_str_mv Wiley-Blackwell
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415224432394240
score 15,812455

Similares en LA Referencia