Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore

Herbivore outbreaks often trigger catastrophic overgrazing events in marine macrophyte ecosystems. The sea urchin Paracentrotus lividus, the dominant herbivore of shallow Mediterranean seascapes, is capable of precipitating shifts to barrens when its populations explode. Paracentrotus lividus is fou...

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Autores: Boada, Jordi, Farina, Simone, Arthur, Rohan, Romero, Javier, Prado, Patricia, Alcoverro, Teresa
Tipo de recurso: artículo
Fecha de publicación:2018
País:España
Institución:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
Repositorio:Recercat. Dipósit de la Recerca de Catalunya
OAI Identifier:oai:recercat.cat:20.500.12327/165
Acceso en línea:http://hdl.handle.net/20.500.12327/165
https://doi.org/10.1111/oik.05060
Access Level:acceso abierto
Palabra clave:574
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spelling Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivoreBoada, JordiFarina, SimoneArthur, RohanRomero, JavierPrado, PatriciaAlcoverro, Teresa574Herbivore outbreaks often trigger catastrophic overgrazing events in marine macrophyte ecosystems. The sea urchin Paracentrotus lividus, the dominant herbivore of shallow Mediterranean seascapes, is capable of precipitating shifts to barrens when its populations explode. Paracentrotus lividus is found ubiquitously in rocky macroalgal communities and in sandy seagrass meadows of Posidonia oceanica, two of the most important subtidal habitats in the Mediterranean. We explored if habitat‐specific regulation across the principal stages of the urchin life cycle could help explain the persistence of these populations in connected mosaics. We measured each of three relevant ecological processes (i.e. settlement, post‐settlement survival and predation) across a wide stretch of the Mediterranean coast (ca 600 km). Our results show that habitat‐specific regulation is critical in determining urchin populations: each habitat limited urchin sub‐populations at different life stages. Settlement was never limiting; urchins settled at similar rates in both habitats across the coast. Post‐settlement survival was a clear bottleneck, particularly in seagrass meadows where no juvenile urchins were recorded. Despite this bottleneck in seagrasses, adult urchin populations were very similar in both seagrass and macroalgal habitats indicating that other processes (potentially migration) could be key in determining adult distributions across the mosaic. The fact that population regulation is clearly habitat‐specific suggests that sea urchin populations may be significantly buffered from bottlenecks in mixed seascapes where both habitats co‐occur. Sea urchin populations can therefore persist across the seascape despite strong habitat‐specific regulation either by maintaining reproductive output in one habitat or by migrating between them. By affording these regulatory escapes to habitat‐modifying species, patchy mosaics may be much more prone to herbivore outbreaks and a host of cascading effects that come in their wake.info:eu-repo/semantics/acceptedVersionWileyProducció AnimalAigües Marines i Continentals2018info:eu-repo/semantics/article23http://hdl.handle.net/20.500.12327/165https://doi.org/10.1111/oik.05060reponame:Recercat. Dipósit de la Recerca de Catalunyainstname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)InglésOikosMICINN/Programa Nacional de Proyectos de Investigación Fundamental/CTM2010-22273-C02-02/ES/Evaluación experimental de la influencia de atributos del paisaje sobre interacciones funcionales entre elementos del mosaico de ecosistemas costeros/MICINN/Programa Estatal de I+D+I orientada a los retos de la sociedad/CTM2013-48027-C3-3-R/ES/Resilencia de las praderas angiospermas marinas al calentamiento global: un analisis basado en respuestas ecofisiologicas, poblacionales y ecosistemicas/MICINN/FPI 2011/BES-2011-043630/ES/ /Attribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:recercat.cat:20.500.12327/1652026-05-29T05:05:01Z
dc.title.none.fl_str_mv Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
title Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
spellingShingle Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
Boada, Jordi
574
title_short Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
title_full Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
title_fullStr Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
title_full_unstemmed Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
title_sort Herbivore control in connected seascapes: habitat determines when population regulation occurs in the life history of a key herbivore
dc.creator.none.fl_str_mv Boada, Jordi
Farina, Simone
Arthur, Rohan
Romero, Javier
Prado, Patricia
Alcoverro, Teresa
author Boada, Jordi
author_facet Boada, Jordi
Farina, Simone
Arthur, Rohan
Romero, Javier
Prado, Patricia
Alcoverro, Teresa
author_role author
author2 Farina, Simone
Arthur, Rohan
Romero, Javier
Prado, Patricia
Alcoverro, Teresa
author2_role author
author
author
author
author
dc.contributor.none.fl_str_mv Producció Animal
Aigües Marines i Continentals
dc.subject.none.fl_str_mv 574
topic 574
description Herbivore outbreaks often trigger catastrophic overgrazing events in marine macrophyte ecosystems. The sea urchin Paracentrotus lividus, the dominant herbivore of shallow Mediterranean seascapes, is capable of precipitating shifts to barrens when its populations explode. Paracentrotus lividus is found ubiquitously in rocky macroalgal communities and in sandy seagrass meadows of Posidonia oceanica, two of the most important subtidal habitats in the Mediterranean. We explored if habitat‐specific regulation across the principal stages of the urchin life cycle could help explain the persistence of these populations in connected mosaics. We measured each of three relevant ecological processes (i.e. settlement, post‐settlement survival and predation) across a wide stretch of the Mediterranean coast (ca 600 km). Our results show that habitat‐specific regulation is critical in determining urchin populations: each habitat limited urchin sub‐populations at different life stages. Settlement was never limiting; urchins settled at similar rates in both habitats across the coast. Post‐settlement survival was a clear bottleneck, particularly in seagrass meadows where no juvenile urchins were recorded. Despite this bottleneck in seagrasses, adult urchin populations were very similar in both seagrass and macroalgal habitats indicating that other processes (potentially migration) could be key in determining adult distributions across the mosaic. The fact that population regulation is clearly habitat‐specific suggests that sea urchin populations may be significantly buffered from bottlenecks in mixed seascapes where both habitats co‐occur. Sea urchin populations can therefore persist across the seascape despite strong habitat‐specific regulation either by maintaining reproductive output in one habitat or by migrating between them. By affording these regulatory escapes to habitat‐modifying species, patchy mosaics may be much more prone to herbivore outbreaks and a host of cascading effects that come in their wake.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/20.500.12327/165
https://doi.org/10.1111/oik.05060
url http://hdl.handle.net/20.500.12327/165
https://doi.org/10.1111/oik.05060
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Oikos
MICINN/Programa Nacional de Proyectos de Investigación Fundamental/CTM2010-22273-C02-02/ES/Evaluación experimental de la influencia de atributos del paisaje sobre interacciones funcionales entre elementos del mosaico de ecosistemas costeros/
MICINN/Programa Estatal de I+D+I orientada a los retos de la sociedad/CTM2013-48027-C3-3-R/ES/Resilencia de las praderas angiospermas marinas al calentamiento global: un analisis basado en respuestas ecofisiologicas, poblacionales y ecosistemicas/
MICINN/FPI 2011/BES-2011-043630/ES/ /
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 International
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 23
dc.publisher.none.fl_str_mv Wiley
publisher.none.fl_str_mv Wiley
dc.source.none.fl_str_mv reponame:Recercat. Dipósit de la Recerca de Catalunya
instname:Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
instname_str Varias* (Consorci de Biblioteques Universitáries de Catalunya, Centre de Serveis Científics i Acadèmics de Catalunya)
reponame_str Recercat. Dipósit de la Recerca de Catalunya
collection Recercat. Dipósit de la Recerca de Catalunya
repository.name.fl_str_mv
repository.mail.fl_str_mv
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