Title: Use of a seagrass residency index to apportion commercial fishery landing values and recreation fisheries expenditure to seagrass habitat service
Abstract: Conservation BiologyVolume 29, Issue 3 p. 899-909 Contributed Paper Use of a seagrass residency index to apportion commercial fishery landing values and recreation fisheries expenditure to seagrass habitat service Emma L. Jackson, Corresponding Author Emma L. Jackson Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United Kingdom School of Medical and Applied Sciences, Central Queensland University, Bryan Jordan Drive, P.O. Box 1319 Gladstone, Queensland 4680, AustraliaAddress for correspondence: School of Medical and Applied Sciences, Building 604, Central Queensland University - Marina Campus, Bryan Jordan Drive, Gladstone, Queensland 4680, Australia, email [email protected]Search for more papers by this author§ Siân E. Rees, § Siân E. Rees Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United KingdomSearch for more papers by this authorCatherine Wilding, Catherine Wilding Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United Kingdom Cornwall Wildlife Trust, Five Acres, Allet, Truro, Cornwall, TR4 9DJ United KingdomSearch for more papers by this authorMartin J. Attrill, Martin J. Attrill Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United KingdomSearch for more papers by this author Emma L. Jackson, Corresponding Author Emma L. Jackson Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United Kingdom School of Medical and Applied Sciences, Central Queensland University, Bryan Jordan Drive, P.O. Box 1319 Gladstone, Queensland 4680, AustraliaAddress for correspondence: School of Medical and Applied Sciences, Building 604, Central Queensland University - Marina Campus, Bryan Jordan Drive, Gladstone, Queensland 4680, Australia, email [email protected]Search for more papers by this author§ Siân E. Rees, § Siân E. Rees Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United KingdomSearch for more papers by this authorCatherine Wilding, Catherine Wilding Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United Kingdom Cornwall Wildlife Trust, Five Acres, Allet, Truro, Cornwall, TR4 9DJ United KingdomSearch for more papers by this authorMartin J. Attrill, Martin J. Attrill Marine Institute, Plymouth University, Drake Circus, Plymouth, PL4 8AA United KingdomSearch for more papers by this author First published: 07 January 2015 https://doi.org/10.1111/cobi.12436Citations: 66Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onEmailFacebookTwitterLinkedInRedditWechat Abstracten Where they dominate coastlines, seagrass beds are thought to have a fundamental role in maintaining populations of exploited species. Thus, Mediterranean seagrass beds are afforded protection, yet no attempt to determine the contribution of these areas to both commercial fisheries landings and recreational fisheries expenditure has been made. There is evidence that seagrass extent continues to decline, but there is little understanding of the potential impacts of this decline. We used a seagrass residency index, that was trait and evidence based, to estimate the proportion of Mediterranean commercial fishery landings values and recreation fisheries total expenditure that can be attributed to seagrass during different life stages. The index was calculated as a weighted sum of the averages of the estimated residence time in seagrass (compared with other habitats) at each life stage of the fishery species found in seagrass. Seagrass-associated species were estimated to contribute 30%–40% to the value of commercial fisheries landings and approximately 29% to recreational fisheries expenditure. These species predominantly rely on seagrass to survive juvenile stages. Seagrass beds had an estimated direct annual contribution during residency of €58–91 million (4% of commercial landing values) and €112 million (6% of recreation expenditure) to commercial and recreational fisheries, respectively, despite covering <2% of the area. These results suggest there is a clear cost of seagrass degradation associated with ineffective management of seagrass beds and that policy to manage both fisheries and seagrass beds should take into account the socioeconomic implications of seagrass loss to recreational and commercial fisheries. Abstractes El Uso de un Índice de Residencia de Pastos Marinos para Distribuir Valores de Desembarco de Pesquerías Comerciales y Gastos de Pesquerías Recreativas para Servicios de Hábitat de Pastos Marinos Resumen Donde los pastos marinos dominan las costas, estos tienen un papel fundamental en el mantenimiento de poblaciones de especies explotadas. Por esto, los pastos marinos en el Mediterráneo merecen protección, pero no se ha hecho intento alguno por determinar la contribución de estas áreas a los atraques de las pesquerías comerciales y los gastos de las pesquerías recreativas. Existe evidencia de que la distribución de los pastos marinos continúa declinando, pero hay poco entendimiento de los impactos potenciales de esta disminución. Usamos un índice de residencia de pastos marinos, con base en la evidencia del ciclo de vida, para estimar la proporción de valores de desembarco de pesquerías comerciales y de gastos totales de pesquerías recreativas que se le puede atribuir a los pastos marinos durante diferentes etapas de vida. El índice se calculó como la suma ponderada de los promedios de tiempos de residencia estimada en los pastos marinos (en comparación con otros hábitats) durante cada etapa de vida de las especies objeto de pesquerías que se encuentran en los pastos. Se estimó que las especies asociadas a los pastos contribuyen entre el 30 y el 40% al valor de desembarco de las pesquerías comerciales y aproximadamente al 29% del gasto de las pesquerías recreativas. Estas especies dependen predominantemente de los pastos marinos para sobrevivir a las etapas juveniles. Durante la residencia, se estimó que los pastos marinos tuvieron una contribución anual directa de €58-91 millones (4% de los valores de desembarco comercial) y de €112 millones (6% del gasto recreativo) de las pesquerías comerciales y recreativas, respectivamente, a pesar de tener una cobertura menor al 2% del área. Estos resultados sugieren que existe un costo claro de la degradación de pastos marinos asociado con el manejo poco efectivo de los mismos y que la política de manejo tanto de las pesquerías como de los pastos marinos debe considerar las implicaciones socio-económicas de la pérdida de los pastos para las pesquerías comerciales y recreativas. Supporting Information Disclaimer: Supplementary materials have been peer-reviewed but not copyedited. Filename Description cobi12436-sup-0001-Suppinfo.zip104.5 KB Life history data collated for the calculation of the SRI, including source information (Appendix S1), and a full valuation table for recreational fishing in the Mediterranean, including source information (Appendix S2), are available online. The authors are solely responsible for their content and functionality of these materials. Queries (other than the absence of material) should be directed to the corresponding author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article. Literature Cited Ardizzone GD, Tucci P, Somaschini A, Belluscio A. 2000. 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