Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone

Detalhes bibliográficos
Autor(a) principal: Azevedo, Jonas de
Data de Publicação: 2023
Outros Autores: Franco, Joao N., Vale, Cândida G., Lemos, Marco F.L., Arenas, Francisco
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.8/8969
Resumo: Anthropogenic climate change, particularly seawater warming, is expected to drive quick shifts in marine species distribution transforming coastal communities. These shifts in distribution will be particularly noticeable in biogeographical transition zones. The continental Portuguese coast stretches from north to south along 900 km. Despite this short spatial scale, the strong physical gradient intensified by the Iberian upwelling creates a transition zone where seaweed species from boreal and Lusitanian-Mediterranean origin coexist. On the northern coast, kelp marine forests thrive in the cold, nutrient-rich oceanic waters. In the south, communities resemble Mediterranean-type seaweed assemblages and are dominated by turfs. Recent evidence suggests that in these coastal areas, marine intertidal species are shifting their distribution edges as a result of rising seawater temperatures. Taking advantage of previous abundance data collected in 2012 from subtidal seaweed communities, a new sampling program was carried out in the same regions in 2018 to assess recent changes. The results confirmed the latitudinal gradient in macroalgal assemblages. More importantly we found significant structural and functional changes in a short period of six years, with regional increases of abundance of warm-affinity species, small seaweeds like turfs. Species richness, diversity, and biomass increase, all accompanied by an increase of community temperature index (CTI). Our findings suggest that subtidal seaweed communities in this transitional area have undergone major changes within a few years. Evidence of “fast tropicalization” of the subtidal communities of the Portuguese coast are strong indication of the effects of anthropic climate change over coastal assemblages.
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spelling Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zoneAnthropogenic climate changeSeawater warmingCoastal communities transformationPortuguese coastMarine speciesTropicalizationAnthropogenic climate change, particularly seawater warming, is expected to drive quick shifts in marine species distribution transforming coastal communities. These shifts in distribution will be particularly noticeable in biogeographical transition zones. The continental Portuguese coast stretches from north to south along 900 km. Despite this short spatial scale, the strong physical gradient intensified by the Iberian upwelling creates a transition zone where seaweed species from boreal and Lusitanian-Mediterranean origin coexist. On the northern coast, kelp marine forests thrive in the cold, nutrient-rich oceanic waters. In the south, communities resemble Mediterranean-type seaweed assemblages and are dominated by turfs. Recent evidence suggests that in these coastal areas, marine intertidal species are shifting their distribution edges as a result of rising seawater temperatures. Taking advantage of previous abundance data collected in 2012 from subtidal seaweed communities, a new sampling program was carried out in the same regions in 2018 to assess recent changes. The results confirmed the latitudinal gradient in macroalgal assemblages. More importantly we found significant structural and functional changes in a short period of six years, with regional increases of abundance of warm-affinity species, small seaweeds like turfs. Species richness, diversity, and biomass increase, all accompanied by an increase of community temperature index (CTI). Our findings suggest that subtidal seaweed communities in this transitional area have undergone major changes within a few years. Evidence of “fast tropicalization” of the subtidal communities of the Portuguese coast are strong indication of the effects of anthropic climate change over coastal assemblages.NatureIC-OnlineAzevedo, Jonas deFranco, Joao N.Vale, Cândida G.Lemos, Marco F.L.Arenas, Francisco2023-11-29T10:39:47Z20232023-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.8/8969engde Azevedo, J., Franco, J.N., Vale, C.G. et al. Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone. Sci Rep 13, 11720 (2023). https://doi.org/10.1038/s41598-023-38514-x2045-232210.1038/s41598-023-38514-xinfo:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2024-01-17T15:58:36Zoai:iconline.ipleiria.pt:10400.8/8969Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:51:34.143520Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
title Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
spellingShingle Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
Azevedo, Jonas de
Anthropogenic climate change
Seawater warming
Coastal communities transformation
Portuguese coast
Marine species
Tropicalization
title_short Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
title_full Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
title_fullStr Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
title_full_unstemmed Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
title_sort Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone
author Azevedo, Jonas de
author_facet Azevedo, Jonas de
Franco, Joao N.
Vale, Cândida G.
Lemos, Marco F.L.
Arenas, Francisco
author_role author
author2 Franco, Joao N.
Vale, Cândida G.
Lemos, Marco F.L.
Arenas, Francisco
author2_role author
author
author
author
dc.contributor.none.fl_str_mv IC-Online
dc.contributor.author.fl_str_mv Azevedo, Jonas de
Franco, Joao N.
Vale, Cândida G.
Lemos, Marco F.L.
Arenas, Francisco
dc.subject.por.fl_str_mv Anthropogenic climate change
Seawater warming
Coastal communities transformation
Portuguese coast
Marine species
Tropicalization
topic Anthropogenic climate change
Seawater warming
Coastal communities transformation
Portuguese coast
Marine species
Tropicalization
description Anthropogenic climate change, particularly seawater warming, is expected to drive quick shifts in marine species distribution transforming coastal communities. These shifts in distribution will be particularly noticeable in biogeographical transition zones. The continental Portuguese coast stretches from north to south along 900 km. Despite this short spatial scale, the strong physical gradient intensified by the Iberian upwelling creates a transition zone where seaweed species from boreal and Lusitanian-Mediterranean origin coexist. On the northern coast, kelp marine forests thrive in the cold, nutrient-rich oceanic waters. In the south, communities resemble Mediterranean-type seaweed assemblages and are dominated by turfs. Recent evidence suggests that in these coastal areas, marine intertidal species are shifting their distribution edges as a result of rising seawater temperatures. Taking advantage of previous abundance data collected in 2012 from subtidal seaweed communities, a new sampling program was carried out in the same regions in 2018 to assess recent changes. The results confirmed the latitudinal gradient in macroalgal assemblages. More importantly we found significant structural and functional changes in a short period of six years, with regional increases of abundance of warm-affinity species, small seaweeds like turfs. Species richness, diversity, and biomass increase, all accompanied by an increase of community temperature index (CTI). Our findings suggest that subtidal seaweed communities in this transitional area have undergone major changes within a few years. Evidence of “fast tropicalization” of the subtidal communities of the Portuguese coast are strong indication of the effects of anthropic climate change over coastal assemblages.
publishDate 2023
dc.date.none.fl_str_mv 2023-11-29T10:39:47Z
2023
2023-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.8/8969
url http://hdl.handle.net/10400.8/8969
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv de Azevedo, J., Franco, J.N., Vale, C.G. et al. Rapid tropicalization evidence of subtidal seaweed assemblages along a coastal transitional zone. Sci Rep 13, 11720 (2023). https://doi.org/10.1038/s41598-023-38514-x
2045-2322
10.1038/s41598-023-38514-x
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
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dc.publisher.none.fl_str_mv Nature
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