Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages

Beds of nonattached coralline algae (maerl or rhodoliths) are widespread and considered relatively species rich. This habitat is generally found in areas where there is chronic physical disturbance such that maerl thalli are frequently moved. Little is known, however, about how natural disturbance r...

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Detalles Bibliográficos
Autores: Hinojosa Arango, Gustavo, Gustavo Hinojosa Arango
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2009
País:México
Institución:Instituto Politécnico Nacional
Repositorio:Repositorio Institucional de Literatura del IPN-CIIDIR Unidad Oaxaca
Idioma:inglés
OAI Identifier:oai:literatura.ciidiroaxaca.ipn.mx:LITER_CIIDIROAX/567
Acceso en línea:http://literatura.ciidiroaxaca.ipn.mx:8080/xmlui/handle/LITER_CIIDIROAX/567
Access Level:acceso abierto
Palabra clave:info:eu-repo/classification/cti/2
Coralline algae
disturbance
maerl beds
nestedness
Phymatolithon calcareum
rhodolith stability
Strangford Lough
Northern Ireland
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oai_identifier_str oai:literatura.ciidiroaxaca.ipn.mx:LITER_CIIDIROAX/567
network_acronym_str MX
network_name_str México
repository_id_str
spelling Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblagesHinojosa Arango, GustavoGustavo Hinojosa Arangoinfo:eu-repo/classification/cti/2Coralline algaedisturbancemaerl bedsnestednessPhymatolithon calcareumrhodolith stabilityStrangford LoughNorthern IrelandBeds of nonattached coralline algae (maerl or rhodoliths) are widespread and considered relatively species rich. This habitat is generally found in areas where there is chronic physical disturbance such that maerl thalli are frequently moved. Little is known, however, about how natural disturbance regimes affect the species associated with maerl. This study compared the richness, animal abundance, and algal biomass of maerl-associated species over a two-year period in a wave-disturbed bed and a sheltered maerl bed. Changes in associated species over time were assessed for departures from a neutral model in which the dissimilarity between samples re?ects random sampling from a common species pool. Algal biomass and species richness at the wave-exposed site and on stabilized maerl at the sheltered site were reduced at times of higher wind speeds. The changes in species richness were not distinguishable from a neutral model, implying that algal species were added at random to the assemblage as the level of disturbance lessened. Results for animal species were more mixed. Although mobile species were less abundant during windy periods at the exposed site, both neutral and non-neutral patterns were evident in the assemblages. Arti?cial stabilization of maerl had inconsistent effects on the richness of animals but always resulted in more attached algal species. While the results show that the response of a community to disturbance can be neutral, the domain of neutral changes in communities may be relatively small. Alongside nonneutral responses to natural disturbance, arti?cial stabilization always resulted in an assemblage that was more distinct than would be expected under random sampling from a common pool. Community responses to stabilization treatments did not consistently follow the predictions of the dynamic equilibrium model, the intermediate disturbance model, or a facilitation model. These inconsistencies may re?ect site-speci?c variation in both the disturbance regime and the adjacent habitats that provide source populations for many of the species found associated with maerl.Ecology, 90 (2)2009-02info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://literatura.ciidiroaxaca.ipn.mx:8080/xmlui/handle/LITER_CIIDIROAX/567reponame:Repositorio Institucional de Literatura del IPN-CIIDIR Unidad Oaxacainstname:Instituto Politécnico Nacionalinstacron:IPNenginfo:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0oai:literatura.ciidiroaxaca.ipn.mx:LITER_CIIDIROAX/5672024-10-11T19:19:04Z
dc.title.none.fl_str_mv Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
title Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
spellingShingle Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
Hinojosa Arango, Gustavo
info:eu-repo/classification/cti/2
Coralline algae
disturbance
maerl beds
nestedness
Phymatolithon calcareum
rhodolith stability
Strangford Lough
Northern Ireland
title_short Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
title_full Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
title_fullStr Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
title_full_unstemmed Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
title_sort Like a rolling stone: the mobility of maerl (Corallinaceae) and the neutrality of the associated assemblages
dc.creator.none.fl_str_mv Hinojosa Arango, Gustavo
Gustavo Hinojosa Arango
author Hinojosa Arango, Gustavo
author_facet Hinojosa Arango, Gustavo
Gustavo Hinojosa Arango
author_role author
author2 Gustavo Hinojosa Arango
author2_role author
dc.subject.none.fl_str_mv info:eu-repo/classification/cti/2
Coralline algae
disturbance
maerl beds
nestedness
Phymatolithon calcareum
rhodolith stability
Strangford Lough
Northern Ireland
topic info:eu-repo/classification/cti/2
Coralline algae
disturbance
maerl beds
nestedness
Phymatolithon calcareum
rhodolith stability
Strangford Lough
Northern Ireland
description Beds of nonattached coralline algae (maerl or rhodoliths) are widespread and considered relatively species rich. This habitat is generally found in areas where there is chronic physical disturbance such that maerl thalli are frequently moved. Little is known, however, about how natural disturbance regimes affect the species associated with maerl. This study compared the richness, animal abundance, and algal biomass of maerl-associated species over a two-year period in a wave-disturbed bed and a sheltered maerl bed. Changes in associated species over time were assessed for departures from a neutral model in which the dissimilarity between samples re?ects random sampling from a common species pool. Algal biomass and species richness at the wave-exposed site and on stabilized maerl at the sheltered site were reduced at times of higher wind speeds. The changes in species richness were not distinguishable from a neutral model, implying that algal species were added at random to the assemblage as the level of disturbance lessened. Results for animal species were more mixed. Although mobile species were less abundant during windy periods at the exposed site, both neutral and non-neutral patterns were evident in the assemblages. Arti?cial stabilization of maerl had inconsistent effects on the richness of animals but always resulted in more attached algal species. While the results show that the response of a community to disturbance can be neutral, the domain of neutral changes in communities may be relatively small. Alongside nonneutral responses to natural disturbance, arti?cial stabilization always resulted in an assemblage that was more distinct than would be expected under random sampling from a common pool. Community responses to stabilization treatments did not consistently follow the predictions of the dynamic equilibrium model, the intermediate disturbance model, or a facilitation model. These inconsistencies may re?ect site-speci?c variation in both the disturbance regime and the adjacent habitats that provide source populations for many of the species found associated with maerl.
publishDate 2009
dc.date.none.fl_str_mv 2009-02
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://literatura.ciidiroaxaca.ipn.mx:8080/xmlui/handle/LITER_CIIDIROAX/567
url http://literatura.ciidiroaxaca.ipn.mx:8080/xmlui/handle/LITER_CIIDIROAX/567
dc.language.none.fl_str_mv eng
language eng
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Ecology, 90 (2)
publisher.none.fl_str_mv Ecology, 90 (2)
dc.source.none.fl_str_mv reponame:Repositorio Institucional de Literatura del IPN-CIIDIR Unidad Oaxaca
instname:Instituto Politécnico Nacional
instacron:IPN
instname_str Instituto Politécnico Nacional
instacron_str IPN
institution IPN
reponame_str Repositorio Institucional de Literatura del IPN-CIIDIR Unidad Oaxaca
collection Repositorio Institucional de Literatura del IPN-CIIDIR Unidad Oaxaca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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