Impact of harvest by humans on mussel populations around Easter
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10400.2/2886 |
Resumo: | The current macroeconomic scenario has subjected Portuguese coastal areas to greater human pressure caused by the ever-increasing shellfish harvest. Every year on Holy Friday, hundreds of people make their way to coastal areas and frantically capture hundreds of bags worth of mussels in a short amount of time. It causes not just inevitable and profound changes to the intertidal zone, but also slows down its recovery. In 2010 Cascais Municipality (CM) was made aware of this problem and in 2011 and 2012 released a general awareness campaign entitled “In Easter who pays is the mussel”. More than just providing a legal perspective, the goal was to test the impact of said campaign in Meixilhoeiro’s mussel beds. Biological data sampling in “Mexilhoeiro” was conducted over a three-year period, from 2010 to 2012. In 2010 there was no awareness campaign but sampling was done after Holy Friday. In 2011 and 2012 it was done both after and before Holy Friday. The average length and coverage percentage of individuals in rocks were recorded. The subsequent graphical analysis indicated that the average coverage percentage of mussels had been decreasing over the years. However a positive sign was recorded in after the 2012 awareness campaign, when the average length of individuals showed an increase. This could mean a reduction in harvesting during Holy Friday. Results suggest that awareness campaigns are effective measures in the immediate protection of marine resources, when supported by reinforcement in surveillance from fisheries protection authorities. For such improvements to persist, so must those efforts. Beachgoers in the summertime can have a detrimental impact on mussel bed size. Prohibiting recreational fishing will not suffice. |
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Impact of harvest by humans on mussel populations around EasterMytilus galloprovincialisRecreational harvestEasterAwareness campaignThe current macroeconomic scenario has subjected Portuguese coastal areas to greater human pressure caused by the ever-increasing shellfish harvest. Every year on Holy Friday, hundreds of people make their way to coastal areas and frantically capture hundreds of bags worth of mussels in a short amount of time. It causes not just inevitable and profound changes to the intertidal zone, but also slows down its recovery. In 2010 Cascais Municipality (CM) was made aware of this problem and in 2011 and 2012 released a general awareness campaign entitled “In Easter who pays is the mussel”. More than just providing a legal perspective, the goal was to test the impact of said campaign in Meixilhoeiro’s mussel beds. Biological data sampling in “Mexilhoeiro” was conducted over a three-year period, from 2010 to 2012. In 2010 there was no awareness campaign but sampling was done after Holy Friday. In 2011 and 2012 it was done both after and before Holy Friday. The average length and coverage percentage of individuals in rocks were recorded. The subsequent graphical analysis indicated that the average coverage percentage of mussels had been decreasing over the years. However a positive sign was recorded in after the 2012 awareness campaign, when the average length of individuals showed an increase. This could mean a reduction in harvesting during Holy Friday. Results suggest that awareness campaigns are effective measures in the immediate protection of marine resources, when supported by reinforcement in surveillance from fisheries protection authorities. For such improvements to persist, so must those efforts. Beachgoers in the summertime can have a detrimental impact on mussel bed size. Prohibiting recreational fishing will not suffice.Journal of Integrated Coastal Zone ManagementRepositório AbertoFerreira, AnaSeixas, SóniaRijo, AndreiaFaria, SaraFialho, Vânia2014-01-24T13:18:29Z20132013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.2/2886engSeixas, Sónia [et al.] - Impact of harvest by humans on mussel populations around Easter. "Journal of Integrated Coastal Zone Management" [Em linha]. ISSN 1646-8872. Vol. 13, nº 2 (2013), p. 145-1551646-8872info: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:RCAAP2023-11-16T15:16:30Zoai:repositorioaberto.uab.pt:10400.2/2886Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T22:44:06.290717Repositório 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 |
Impact of harvest by humans on mussel populations around Easter |
title |
Impact of harvest by humans on mussel populations around Easter |
spellingShingle |
Impact of harvest by humans on mussel populations around Easter Ferreira, Ana Mytilus galloprovincialis Recreational harvest Easter Awareness campaign |
title_short |
Impact of harvest by humans on mussel populations around Easter |
title_full |
Impact of harvest by humans on mussel populations around Easter |
title_fullStr |
Impact of harvest by humans on mussel populations around Easter |
title_full_unstemmed |
Impact of harvest by humans on mussel populations around Easter |
title_sort |
Impact of harvest by humans on mussel populations around Easter |
author |
Ferreira, Ana |
author_facet |
Ferreira, Ana Seixas, Sónia Rijo, Andreia Faria, Sara Fialho, Vânia |
author_role |
author |
author2 |
Seixas, Sónia Rijo, Andreia Faria, Sara Fialho, Vânia |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Repositório Aberto |
dc.contributor.author.fl_str_mv |
Ferreira, Ana Seixas, Sónia Rijo, Andreia Faria, Sara Fialho, Vânia |
dc.subject.por.fl_str_mv |
Mytilus galloprovincialis Recreational harvest Easter Awareness campaign |
topic |
Mytilus galloprovincialis Recreational harvest Easter Awareness campaign |
description |
The current macroeconomic scenario has subjected Portuguese coastal areas to greater human pressure caused by the ever-increasing shellfish harvest. Every year on Holy Friday, hundreds of people make their way to coastal areas and frantically capture hundreds of bags worth of mussels in a short amount of time. It causes not just inevitable and profound changes to the intertidal zone, but also slows down its recovery. In 2010 Cascais Municipality (CM) was made aware of this problem and in 2011 and 2012 released a general awareness campaign entitled “In Easter who pays is the mussel”. More than just providing a legal perspective, the goal was to test the impact of said campaign in Meixilhoeiro’s mussel beds. Biological data sampling in “Mexilhoeiro” was conducted over a three-year period, from 2010 to 2012. In 2010 there was no awareness campaign but sampling was done after Holy Friday. In 2011 and 2012 it was done both after and before Holy Friday. The average length and coverage percentage of individuals in rocks were recorded. The subsequent graphical analysis indicated that the average coverage percentage of mussels had been decreasing over the years. However a positive sign was recorded in after the 2012 awareness campaign, when the average length of individuals showed an increase. This could mean a reduction in harvesting during Holy Friday. Results suggest that awareness campaigns are effective measures in the immediate protection of marine resources, when supported by reinforcement in surveillance from fisheries protection authorities. For such improvements to persist, so must those efforts. Beachgoers in the summertime can have a detrimental impact on mussel bed size. Prohibiting recreational fishing will not suffice. |
publishDate |
2013 |
dc.date.none.fl_str_mv |
2013 2013-01-01T00:00:00Z 2014-01-24T13:18:29Z |
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/10400.2/2886 |
url |
http://hdl.handle.net/10400.2/2886 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Seixas, Sónia [et al.] - Impact of harvest by humans on mussel populations around Easter. "Journal of Integrated Coastal Zone Management" [Em linha]. ISSN 1646-8872. Vol. 13, nº 2 (2013), p. 145-155 1646-8872 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Journal of Integrated Coastal Zone Management |
publisher.none.fl_str_mv |
Journal of Integrated Coastal Zone Management |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799135009913700352 |