Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems

The Manila clam (Ruditapes philippinarum, Adam & Reeve 1850) is a non-indigenous species that was introduced in Europe (France) in the 1970s for commercial purposes, and reached Portugal in the 1980s. Currently, it occurs in several European coastal systems, from the Bay of Biscay to the nor...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Pedro Coelho, Frederico Carvalho, Thomas Goulding, Paula Chainho, José Guerreiro
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	bivalve exploitation Tagus estuary legal framework spatial planning instruments management model Science Q General. Including nature conservation, geographical distribution QH1-199.5
Acceso en línea:	https://doaj.org/article/4a7957b615fc47b8a5cd89e066f19cf3
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:4a7957b615fc47b8a5cd89e066f19cf3
record_format	dspace
spelling	oai:doaj.org-article:4a7957b615fc47b8a5cd89e066f19cf32021-11-30T19:34:05ZManagement Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems2296-774510.3389/fmars.2021.685307https://doaj.org/article/4a7957b615fc47b8a5cd89e066f19cf32021-07-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fmars.2021.685307/fullhttps://doaj.org/toc/2296-7745The Manila clam (Ruditapes philippinarum, Adam & Reeve 1850) is a non-indigenous species that was introduced in Europe (France) in the 1970s for commercial purposes, and reached Portugal in the 1980s. Currently, it occurs in several European coastal systems, from the Bay of Biscay to the north Mediterranean. In Portugal, it is present in estuarine systems and coastal lagoons from the north to south, such as Ria de Aveiro, Óbidos Lagoon and Sado estuary, but a sharp rise in the prevalence of this species in the largest Portuguese estuary, the Tagus, resulted in the exponential growth of the number of harvesters and, consequently, an increase in the illegal exploitation of this resource. At least 1700 harvesters were estimated in this system and an annual catch volume of between around 4,000 and 17,000 t which corresponds to an annual value around €10,000,000 to €23,000,000 of sales. There is a general failure to comply with current legislation, both in relation to harvesting and marketing, as well as constraints arising from spatial planning instruments in force on the estuary. The failure to comply with sanitary standards for the exploitation and trade of bivalve mollusks presents a risk to public health and a social-economic issue resulting from this activity. The goal of this study is to propose management models for this activity with the aim of contributing to create a legal framework in which sustainable harvesting can be achieved, in the different systems where exploitation occurs. In order to accomplish this goal, the current state play, legal framework, regulation for harvesting and trade and relevant spatial planning instruments in Portugal are analyzed. In order to ascertain an adequate national management strategy, a variety of case studies in France, Spain and Italy were studied. The outcome is a management model which includes a co-management strategy of concessions as well as a mixed regime with concession areas and free areas. The creation of specific regulations; implementation of a co-management model with the active participation of harvesters; science-based regulation of a closed season and maximum daily quotas and an improved surveillance of the activity are recommended.Pedro CoelhoFrederico CarvalhoThomas GouldingPaula ChainhoPaula ChainhoPaula ChainhoJosé GuerreiroJosé GuerreiroFrontiers Media S.A.articlebivalve exploitationTagus estuarylegal frameworkspatial planning instrumentsmanagement modelScienceQGeneral. Including nature conservation, geographical distributionQH1-199.5ENFrontiers in Marine Science, Vol 8 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	bivalve exploitation Tagus estuary legal framework spatial planning instruments management model Science Q General. Including nature conservation, geographical distribution QH1-199.5
spellingShingle	bivalve exploitation Tagus estuary legal framework spatial planning instruments management model Science Q General. Including nature conservation, geographical distribution QH1-199.5 Pedro Coelho Frederico Carvalho Thomas Goulding Paula Chainho Paula Chainho Paula Chainho José Guerreiro José Guerreiro Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
description	The Manila clam (Ruditapes philippinarum, Adam & Reeve 1850) is a non-indigenous species that was introduced in Europe (France) in the 1970s for commercial purposes, and reached Portugal in the 1980s. Currently, it occurs in several European coastal systems, from the Bay of Biscay to the north Mediterranean. In Portugal, it is present in estuarine systems and coastal lagoons from the north to south, such as Ria de Aveiro, Óbidos Lagoon and Sado estuary, but a sharp rise in the prevalence of this species in the largest Portuguese estuary, the Tagus, resulted in the exponential growth of the number of harvesters and, consequently, an increase in the illegal exploitation of this resource. At least 1700 harvesters were estimated in this system and an annual catch volume of between around 4,000 and 17,000 t which corresponds to an annual value around €10,000,000 to €23,000,000 of sales. There is a general failure to comply with current legislation, both in relation to harvesting and marketing, as well as constraints arising from spatial planning instruments in force on the estuary. The failure to comply with sanitary standards for the exploitation and trade of bivalve mollusks presents a risk to public health and a social-economic issue resulting from this activity. The goal of this study is to propose management models for this activity with the aim of contributing to create a legal framework in which sustainable harvesting can be achieved, in the different systems where exploitation occurs. In order to accomplish this goal, the current state play, legal framework, regulation for harvesting and trade and relevant spatial planning instruments in Portugal are analyzed. In order to ascertain an adequate national management strategy, a variety of case studies in France, Spain and Italy were studied. The outcome is a management model which includes a co-management strategy of concessions as well as a mixed regime with concession areas and free areas. The creation of specific regulations; implementation of a co-management model with the active participation of harvesters; science-based regulation of a closed season and maximum daily quotas and an improved surveillance of the activity are recommended.
format	article
author	Pedro Coelho Frederico Carvalho Thomas Goulding Paula Chainho Paula Chainho Paula Chainho José Guerreiro José Guerreiro
author_facet	Pedro Coelho Frederico Carvalho Thomas Goulding Paula Chainho Paula Chainho Paula Chainho José Guerreiro José Guerreiro
author_sort	Pedro Coelho
title	Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
title_short	Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
title_full	Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
title_fullStr	Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
title_full_unstemmed	Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems
title_sort	management models of the manila clam (ruditapes philippinarum) fisheries in invaded european coastal systems
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/4a7957b615fc47b8a5cd89e066f19cf3
work_keys_str_mv	AT pedrocoelho managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT fredericocarvalho managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT thomasgoulding managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT paulachainho managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT paulachainho managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT paulachainho managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT joseguerreiro managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems AT joseguerreiro managementmodelsofthemanilaclamruditapesphilippinarumfisheriesininvadedeuropeancoastalsystems
_version_	1718406260433354752

Management Models of the Manila Clam (Ruditapes philippinarum) Fisheries in Invaded European Coastal Systems

Ejemplares similares