|
|
|
|
|
| Pelletier, Dominique; Leleu, Kevin; Mallet, Delphine; Mou-tham, Gerard; Herve, Gilles; Boureau, Matthieu; Guilpart, Nicolas. |
| Observing spatial and temporal variations of marine biodiversity from non-destructive techniques is central for understanding ecosystem resilience, and for monitoring and assessing conservation strategies, e.g. Marine Protected Areas. Observations are generally obtained through Underwater Visual Censuses (UVC) conducted by divers. The problems inherent to the presence of divers have been discussed in several papers. Video techniques are increasingly used for observing underwater macrofauna and habitat. Most video techniques that do not need the presence of a diver use baited remote systems. In this paper, we present an original video technique which relies on a remote unbaited rotating remote system including a high definition camera. The system is set on... |
| Tipo: Text |
|
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00078/18879/16453.pdf |
| |
|
|
| Leleu, Kevin; Pelletier, Dominique; Charbonnel, Eric; Letourneur, Yves; Alban, Frederique; Bachet, Frederic; Boudouresque, Charles F.. |
| The overexploitation of fishery resources has led to a major fisheries crisis. In this context, artisanal fisheries, and in particular small-scale coastal fisheries, appear as relevant alternatives for a sustainable use of coastal resources. Marine Protected Areas (MPA) are more and more used as management tools for these fisheries, as protection effects and targeted access regulations may benefit to commercial fishers. Managers and scientists need then quantitative information not only to adapt their management to the fishing activity present on their territory, but also to estimate the effects of MPA management on it. This study provides catch and effort estimates that are essential for appraising and managing the artisanal fishery in the Côte Bleue... |
| Tipo: Text |
Palavras-chave: Small-scale coastal fisheries; Marine Protected Areas; Metiers; Fishing effort and catches. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00180/29120/29367.pdf |
| |
|
| |
|
| |
|
|
| Leleu, Kevin; Remy-zephir, Brice; Grace, Roger; Costello, Mark J.. |
| Time-series studies have reported trophic cascades in land, freshwater and marine environments in many geographic areas. However, the spatial extent of habitats, a key metric of ecosystem structure, has not been mapped in these studies. Marine reserves can provide experimental, before-after and inside-outside (control-impacted), situations for assessing the impact of fishing on ecosystems. We mapped seabed habitats and their associated communities (biotopes) in New Zealand's oldest marine reserve for comparison with pre-reserve maps created about 30 years previously. Areas grazed bare by sea urchins were entirely replaced in the centre of the reserve by kelp, or alga turf, an intermediate biotope between heavily grazed encrusting algae and lightly grazed... |
| Tipo: Text |
Palavras-chave: Kelp forest; Ecosystem change; Predator release; Subtidal mapping; Urchin Barren; New Zealand; Lobster; Fish; Time-series. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00107/21842/20067.pdf |
| |
|
|
| Leleu, Kevin. |
| La surexploitation des ressources halieutiques a conduit à une crise majeure du secteur de la pêche professionnelle. Dans ce contexte, les pêcheries artisanales, et notamment les pêcheries aux petits métiers côtiers, apparaissent comme des modes d’exploitation potentiellement durables des ressources côtières. La diversité des engins utilisés et des espèces ciblées rend néanmoins complexe le suivi de cette composante importante de la pêche professionnelle. L’activité de pêche artisanale reste ainsi très peu évaluée en Méditerranée, et notamment à l’échelle d’une Aire Marine Protégée (AMP). Les AMP sont pourtant de plus en plus utilisées comme des outils de gestion de ces pêcheries, les effets des différentes mesures de gestion mises en place étant à même de... |
| Tipo: Text |
Palavras-chave: Pêcherie aux petits métiers côtiers; Aire Marine Protégée; Réserve marine; Indicateurs; Protocole d’enquête; Pression et impact. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00100/21103/18729.pdf |
| |
|
|
| Leleu, Kevin; Rochet, Marie-joelle; Frangoudes, Katia; Ciolek, Delphine. |
| Ce document présente les principaux résultats du programme CarRejet à travers la description du panorama des rejets en mer, la synthèse des causes de rejet identifiées à partir des cas étudiés, et la synthèse des stratégies d’adaptation envisageables à partir des causes de rejet observées. Des conclusions reprennent les principaux résultats et les limites qui sont apparues au cours du programme, accompagnées de recommandations en vue des futurs travaux à entreprendre pour aborder au mieux la prochaine OD. |
| Tipo: Text |
|
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00190/30133/28596.pdf |
| |
|
|
| Leleu, Kevin; Alban, Frederique; Pelletier, Dominique; Charbonnel, Eric; Letourneur, Yves; Boudouresque, Charles F.. |
| How users perceive the performance of Marine Protected Areas (MPAs) is fundamental for the social acceptance of these zones. Moreover, their perceptions may be relevant for monitoring the effects of MPAs on extractive activities. This study analyzes artisanal fishers' perceptions of the performance of a north-western Mediterranean coastal MPA, which encompasses two no-take zones (NTZs). Three viewpoints have been considered: the effect on the personal activity of fishers, the effect on the local fishery and the effect on the ecosystem. In order to test the hypothesis that biomass export (spillover) - which had previously been evidenced from the two NTZs - may influence fishers' perceptions of NTZ effects, fishers' perceptions were compared with both... |
| Tipo: Text |
Palavras-chave: Artisanal fishery; Fishers' perceptions; Social acceptance; No-take zone; MPA performance. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00060/17137/16442.pdf |
| |
|
|
|
