Vessels’ site fidelity and spatio-temporal distribution of artisanal fisheries before the implementation of a temperate multiple-use marine protected area

2013 ◽  
Vol 148 ◽  
pp. 27-37 ◽  
Author(s):  
Bárbara Horta e Costa ◽  
Leonel Gonçalves ◽  
Emanuel J. Gonçalves
PLoS ONE ◽  
2011 ◽  
Vol 6 (9) ◽  
pp. e23820 ◽  
Author(s):  
Delphine Rocklin ◽  
Jean-Antoine Tomasini ◽  
Jean-Michel Culioli ◽  
Dominique Pelletier ◽  
David Mouillot

2009 ◽  
Vol 67 (2) ◽  
pp. 191-203 ◽  
Author(s):  
Aitor Forcada ◽  
Carlos Valle ◽  
José L. Sánchez-Lizaso ◽  
Just T. Bayle-Sempere ◽  
Fabio Corsi

Abstract Forcada, A., Valle, C., Sánchez-Lizaso, J. L., Bayle-Sempere, J. T., and Corsi, F. 2010. Structure and spatio-temporal dynamics of artisanal fisheries around a Mediterranean marine protected area. – ICES Journal of Marine Science, 67: 191–203. Marine protected areas (MPAs) have been proposed and established throughout the world, but few studies have adequately assessed the spatial adaptations of fishers to the limitations imposed by their placement. The main objectives of this work were to identify and describe the characteristics of the artisanal fisheries around Tabarca Marine Reserve (western Mediterranean Sea) and to define their activity in space and time. Data were collected through questionnaires to fishers and onboard sampling. The artisanal fisheries were complex owing to the multispecific nature of the landings, the variety of gears involved, and their marked seasonality. All boats of the three harbours around the MPA were assessed, for a total of 32 boats. The fishers exploit 18 fishing grounds with eight gear types, for a total of 17 métiers. Mullus trammelnet, Sepia trammelnet, and sparid longline are the most frequently used métiers. The main factors determining the spatial distribution of the fishing effort are proximity to home harbour, habitat heterogeneity, and closeness to the MPA. Total fishing effort appeared slightly concentrated around the MPA, but each métier showed different patterns of effort distribution. Although the sparid gillnet and the sparid longline concentrated along MPA boundaries, the Sepia trammelnet and the Mullus trammelnet did not.


2021 ◽  
Vol 168 (7) ◽  
Author(s):  
Elena Desiderà ◽  
Egidio Trainito ◽  
Augusto Navone ◽  
Rémi Blandin ◽  
Luana Magnani ◽  
...  

AbstractAssessing individuals’ abundance, residency (presence at a site within a certain period) and site fidelity (tendency to return to the same site in subsequent seasons or years) is crucial for evaluating and improving the effectiveness of spatial conservation/management measures regarding ecologically and socio-economically valuable species. Using underwater visual census (UVC) and photo-identification (photo-ID) techniques, we estimated the abundance, residency and site fidelity of the dusky grouper, Epinephelus marginatus, at two protected sites within the Tavolara-Punta Coda Cavallo Marine Protected Area (Sardinia, Italy) in the summers of 2017–2018. The scope and spatio-temporal resolution of the study was extended by involving volunteer recreational divers in the photo collection. Grouper mean densities varied significantly across sampling dates, with a significant variability between the 2 years and the two investigated sites. At least 94 grouper visited the study sites in the summers of 2017–2018 based on the analysis of 968 high-quality photos using a semi-automated software to photo-identify individuals. Overall, the most frequently sighted grouper was recorded on 32 different days and 21 individuals (22%) identified in 2017 were re-sighted in 2018. The participation of volunteer recreational divers helped detect the inter-site (3.5–4 km apart) movements of a female and a male, supporting previous findings regarding the occurrence of reproduction-related movements. This study provides novel insights into the residency and site-fidelity patterns of the dusky grouper, and its small-scale movements probably related to reproduction. Specifically, we provide indications that effective protection from fishing should encompass the entire area used by grouper for reproductive movements.


Author(s):  
Iván A. Hinojosa ◽  
German Zapata‐Hernández ◽  
Amelia E. Fowles ◽  
Carlos F. Gaymer ◽  
Rick D. Stuart‐Smith

Marine Policy ◽  
2016 ◽  
Vol 73 ◽  
pp. 138-145 ◽  
Author(s):  
Carol L. Martin ◽  
Salim Momtaz ◽  
Alan Jordan ◽  
Natalie A. Moltschaniwskyj

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