Disentangling exploitation of the intertidal grazer Phorcus sauciatus (Gastropoda: Trochidae) in an oceanic archipelago: Implications for conservation
Abstract
Abstract Harvesting of intertidal grazers such as topshells is known to affect negatively the exploited populations by altering population structure and decreasing abundance. Phorcus sauciatus has a wide geographic distribution in the North‐eastern Atlantic Ocean and is subject to increasing levels of harvesting pressure due to the expansion of human population on coastal areas. The effect of proximity to human settlements and coastal accessibility on the size structure and abundance of P. sauciatus populations was examined in Madeira archipelago. Mean size, proportion of reproductive individuals, and abundance of this species were generally smaller in areas closer to human settlements and in more accessible coastal areas. Marine protected areas returned the highest mean sizes evidencing their effectiveness in preserving the size structure of this species. The results highlight the necessity to regulate the harvest of P. sauciatus in Madeira archipelago, as well as the implementation of management measures aiming at the sustainable exploitation and conservation of this species, exploited in this region since the early 15th century.
- Authors:
-
[1];
- Observatório Oceânico da Madeira Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (OOM/ARDITI) – Edifício Madeira Tecnopolo Funchal Portugal, Direção de Serviços de Investigação (DSI) Direção Regional das Pescas Funchal Portugal
- Centro de Ciências do Mar e do Ambiente (MARE) Caniçal Portugal, Departamento de Ecología, Facultad de Ciencias Universidad Católica de la Santísima Concepción Concepción Chile, Secretaria Regional de Educação Funchal Portugal
- Departamento de Ecología, Facultad de Ciencias Universidad Católica de la Santísima Concepción Concepción Chile
- Direção de Serviços de Investigação (DSI) Direção Regional das Pescas Funchal Portugal, Centro Interdisciplinar de Investigação Marinha e Ambiental (CIIMAR/CIMAR) Porto Portugal
- Ecología Marina Aplicada y Pesquerías (i‐UNAT) Universidad de Las Palmas de Gran Canaria Las Palmas de Gran Canaria Spain
- Observatório Oceânico da Madeira Agência Regional para o Desenvolvimento da Investigação Tecnologia e Inovação (OOM/ARDITI) – Edifício Madeira Tecnopolo Funchal Portugal, Estação de Biologia Marinha do Funchal e Centro de Ciências do Mar e do Ambiente (MARE) Cais do Carvão Funchal Portugal
- Universidade da Madeira Funchal Portugal
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1508410
- Resource Type:
- Publisher's Accepted Manuscript
- Journal Name:
- Marine Ecology
- Additional Journal Information:
- Journal Name: Marine Ecology Journal Volume: 40 Journal Issue: 2; Journal ID: ISSN 0173-9565
- Publisher:
- Wiley-Blackwell
- Country of Publication:
- Germany
- Language:
- English
Citation Formats
Sousa, Ricardo, Vasconcelos, Joana, Riera, Rodrigo, Delgado, João, González, José A., Freitas, Mafalda, and Henriques, Paulo. Disentangling exploitation of the intertidal grazer Phorcus sauciatus (Gastropoda: Trochidae) in an oceanic archipelago: Implications for conservation. Germany: N. p., 2019.
Web. doi:10.1111/maec.12540.
Sousa, Ricardo, Vasconcelos, Joana, Riera, Rodrigo, Delgado, João, González, José A., Freitas, Mafalda, & Henriques, Paulo. Disentangling exploitation of the intertidal grazer Phorcus sauciatus (Gastropoda: Trochidae) in an oceanic archipelago: Implications for conservation. Germany. https://doi.org/10.1111/maec.12540
Sousa, Ricardo, Vasconcelos, Joana, Riera, Rodrigo, Delgado, João, González, José A., Freitas, Mafalda, and Henriques, Paulo. Mon .
"Disentangling exploitation of the intertidal grazer Phorcus sauciatus (Gastropoda: Trochidae) in an oceanic archipelago: Implications for conservation". Germany. https://doi.org/10.1111/maec.12540.
@article{osti_1508410,
title = {Disentangling exploitation of the intertidal grazer Phorcus sauciatus (Gastropoda: Trochidae) in an oceanic archipelago: Implications for conservation},
author = {Sousa, Ricardo and Vasconcelos, Joana and Riera, Rodrigo and Delgado, João and González, José A. and Freitas, Mafalda and Henriques, Paulo},
abstractNote = {Abstract Harvesting of intertidal grazers such as topshells is known to affect negatively the exploited populations by altering population structure and decreasing abundance. Phorcus sauciatus has a wide geographic distribution in the North‐eastern Atlantic Ocean and is subject to increasing levels of harvesting pressure due to the expansion of human population on coastal areas. The effect of proximity to human settlements and coastal accessibility on the size structure and abundance of P. sauciatus populations was examined in Madeira archipelago. Mean size, proportion of reproductive individuals, and abundance of this species were generally smaller in areas closer to human settlements and in more accessible coastal areas. Marine protected areas returned the highest mean sizes evidencing their effectiveness in preserving the size structure of this species. The results highlight the necessity to regulate the harvest of P. sauciatus in Madeira archipelago, as well as the implementation of management measures aiming at the sustainable exploitation and conservation of this species, exploited in this region since the early 15th century.},
doi = {10.1111/maec.12540},
journal = {Marine Ecology},
number = 2,
volume = 40,
place = {Germany},
year = {Mon Apr 22 00:00:00 EDT 2019},
month = {Mon Apr 22 00:00:00 EDT 2019}
}
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https://doi.org/10.1111/maec.12540
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