Dépouillements

Suivis et recherche sur l’île de May : détecter et comprendre les changements à long terme des régimes alimentaires et de la démographie / Sarah Wanless in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 7-12 Titre : Suivis et recherche sur l’île de May : détecter et comprendre les changements à long terme des régimes alimentaires et de la démographie Type de document : texte imprimé Auteurs : Sarah Wanless, Auteur Année de publication : 2013 Article en page(s) : pp. 7-12 Langues : Français (fre) Catégories : Zone géographique Royaume-Uni Thématique Gestion et protection de l'environnement Résumé : Many marine systems are under pressure from multiple anthropogenic threats notably changes in fisheries practice and management, and rapid development of the offshore renewable energy industry. They are also increasingly exposed to climatic changes resulting in rising sea temperature and changes in water chemistry and physics. European coastal seas, particularly the North Sea, are some of the most acutely affected regions and it is therefore vital to carry out monitoring and research to detect, understand and, if possible, predict current and future changes in natural populations and communities. One of the most detailed long term studies in the UK focuses on seabird populations on the Isle of May National Nature Reserve. The Isle of May is a small island off the southeast coast of Scotland in the northwestern North Sea. It supports a diverse community of seabirds with the dominant groups being the auks (Atlantic puffin Fratercula arctica, common guillemot Uria aalge and razorbill Alca torda) and gulls (Black-legged kittiwake Rissa tridactyla, Herring gull Larus argentatus and Lesser black-backed gull Larus fuscus). In summary the collection of demographic and diet data on seabirds represents a powerful and cost-effective method of monitoring changes in the marine environment. To date, results have typically been presented at the individual colony level but increasingly a multi-colony approach is being adopted which allows regional and/or range wide comparisons to be made. Exploiting the full potential of this approach requires partnerships between those who collect the data and researchers with statistical expertise to develop appropriate analytical methods for multi-species and/or multi-colony comparisons Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Suivis et recherche sur l’île de May : détecter et comprendre les changements à long terme des régimes alimentaires et de la démographie [texte imprimé] / Sarah Wanless, Auteur . - 2013 . - pp. 7-12. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 7-12 Catégories : Zone géographique Royaume-Uni Thématique Gestion et protection de l'environnement Résumé : Many marine systems are under pressure from multiple anthropogenic threats notably changes in fisheries practice and management, and rapid development of the offshore renewable energy industry. They are also increasingly exposed to climatic changes resulting in rising sea temperature and changes in water chemistry and physics. European coastal seas, particularly the North Sea, are some of the most acutely affected regions and it is therefore vital to carry out monitoring and research to detect, understand and, if possible, predict current and future changes in natural populations and communities. One of the most detailed long term studies in the UK focuses on seabird populations on the Isle of May National Nature Reserve. The Isle of May is a small island off the southeast coast of Scotland in the northwestern North Sea. It supports a diverse community of seabirds with the dominant groups being the auks (Atlantic puffin Fratercula arctica, common guillemot Uria aalge and razorbill Alca torda) and gulls (Black-legged kittiwake Rissa tridactyla, Herring gull Larus argentatus and Lesser black-backed gull Larus fuscus). In summary the collection of demographic and diet data on seabirds represents a powerful and cost-effective method of monitoring changes in the marine environment. To date, results have typically been presented at the individual colony level but increasingly a multi-colony approach is being adopted which allows regional and/or range wide comparisons to be made. Exploiting the full potential of this approach requires partnerships between those who collect the data and researchers with statistical expertise to develop appropriate analytical methods for multi-species and/or multi-colony comparisons Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Écologie spatiale des fous de Bassan Morus bassanus de la réserve naturelle nationale des Sept-Îles / David Grémillet in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 13-17 Titre : Écologie spatiale des fous de Bassan Morus bassanus de la réserve naturelle nationale des Sept-Îles Type de document : texte imprimé Auteurs : David Grémillet, Auteur ; Amélie Lescroël, Auteur ; Pascal Provost, Auteur Année de publication : 2013 Article en page(s) : pp. 13-17 Langues : Français (fre) Catégories : Sites Sept Iles (Perros-Guirec - 22) Mots-clés : Suliformes  Sulidae Résumé : We conducted biotelemetry and dietary investigations in northern gannet from the Rouzic colony, Sept-Iles Archipelago (21000 pairs) across the year cycle and over the period 2005-2012, using GPS recorders, time-depth-recorders, miniaturised HD cameras or geolocators on over 170 adults. This large data set confirms that birds feed exclusively within the western English Channel during the incubation and chick-rearing phases, showing marked foraging site fidelity and feeding predominantly on garfish and mackerel caught within 10m depth. Outside of the breeding season, adult birds wintered within European waters, visited the Mediterranean, or migrated to coastal areas off West Africa, remaining within 4000-5000km from their breeding site and showing marked multiyear wintering site fidelity. Our biotelemetry information allowed the identification of two marine Important Bird Areas in the English Channel. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Écologie spatiale des fous de Bassan Morus bassanus de la réserve naturelle nationale des Sept-Îles [texte imprimé] / David Grémillet, Auteur ; Amélie Lescroël, Auteur ; Pascal Provost, Auteur . - 2013 . - pp. 13-17. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 13-17 Catégories : Sites Sept Iles (Perros-Guirec - 22) Mots-clés : Suliformes  Sulidae Résumé : We conducted biotelemetry and dietary investigations in northern gannet from the Rouzic colony, Sept-Iles Archipelago (21000 pairs) across the year cycle and over the period 2005-2012, using GPS recorders, time-depth-recorders, miniaturised HD cameras or geolocators on over 170 adults. This large data set confirms that birds feed exclusively within the western English Channel during the incubation and chick-rearing phases, showing marked foraging site fidelity and feeding predominantly on garfish and mackerel caught within 10m depth. Outside of the breeding season, adult birds wintered within European waters, visited the Mediterranean, or migrated to coastal areas off West Africa, remaining within 4000-5000km from their breeding site and showing marked multiyear wintering site fidelity. Our biotelemetry information allowed the identification of two marine Important Bird Areas in the English Channel. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Habitats marins des puffins des îles françaises de Méditerranée / Clara Péron in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 18-22 Titre : Habitats marins des puffins des îles françaises de Méditerranée Type de document : texte imprimé Auteurs : Clara Péron, Auteur ; David Grémillet, Auteur ; J.-M. Culioli, Auteur ; Gilles Faggio, Auteur ; Pascal Gillet, Auteur ; A. Mante, Auteur ; Patrick Vidal, Auteur Année de publication : 2013 Article en page(s) : pp. 18-22 Langues : Français (fre) Résumé : We used miniaturized electronic devices to investigate at-sea distribution of two shearwaters species breeding on 6 French Mediterranean islands. The aim of the study was to gain new insights on shearwaters foraging and migratory strategies to provide key elements for the designation of coastal and offshore protected areas in the Mediterranean Sea. Yelkouan shearwaters Puffinus yelkouan from Port-Cros Is. foraged for 1-5 days in coastal waters along the Gulf of Lion, when rearing a young chick. Cory’s shearwaters, tracked on 5 different islands (Porquerolles, Riou, Frioul, Giraglia and Lavezzi Islands), foraged at-sea for 1.25 days in average during the chick rearing period. Cory’s breeding in Marseille (Riou, Frioul) and Porquerolles islands shared similar waters located in the continental shelf of the Gulf of Lion, whereas the two populations from Corsica foraged in distinct areas. In Lavezzi Is., Cory’s targeted mainly the strait of Bonifacio and Gulf of Asinara in Sardinia, whereas Cory’s from Giraglia Is. foraged close to the colony in local waters located north-east from Corsica. Preliminary results from 4 Cory’s shearwaters equipped with geolocators on the Lavezzi Is. revealed long-distance migrations in 3 different Atlantic wintering grounds. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Habitats marins des puffins des îles françaises de Méditerranée [texte imprimé] / Clara Péron, Auteur ; David Grémillet, Auteur ; J.-M. Culioli, Auteur ; Gilles Faggio, Auteur ; Pascal Gillet, Auteur ; A. Mante, Auteur ; Patrick Vidal, Auteur . - 2013 . - pp. 18-22. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 18-22 Résumé : We used miniaturized electronic devices to investigate at-sea distribution of two shearwaters species breeding on 6 French Mediterranean islands. The aim of the study was to gain new insights on shearwaters foraging and migratory strategies to provide key elements for the designation of coastal and offshore protected areas in the Mediterranean Sea. Yelkouan shearwaters Puffinus yelkouan from Port-Cros Is. foraged for 1-5 days in coastal waters along the Gulf of Lion, when rearing a young chick. Cory’s shearwaters, tracked on 5 different islands (Porquerolles, Riou, Frioul, Giraglia and Lavezzi Islands), foraged at-sea for 1.25 days in average during the chick rearing period. Cory’s breeding in Marseille (Riou, Frioul) and Porquerolles islands shared similar waters located in the continental shelf of the Gulf of Lion, whereas the two populations from Corsica foraged in distinct areas. In Lavezzi Is., Cory’s targeted mainly the strait of Bonifacio and Gulf of Asinara in Sardinia, whereas Cory’s from Giraglia Is. foraged close to the colony in local waters located north-east from Corsica. Preliminary results from 4 Cory’s shearwaters equipped with geolocators on the Lavezzi Is. revealed long-distance migrations in 3 different Atlantic wintering grounds. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Programme SKRAPESK : exploitation du milieu marin par les sternes en période de reproduction / Bernard Cadiou in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 23-28 Titre : Programme SKRAPESK : exploitation du milieu marin par les sternes en période de reproduction Type de document : texte imprimé Auteurs : Bernard Cadiou, Auteur Année de publication : 2013 Article en page(s) : pp. 23-28 Langues : Français (fre) Catégories : Sites FR - Archipel des Glénan (Fouesnant) ; FR - Baie de Morlaix Mots-clés : sterne  laridés  Laridae Résumé : Skrapesk program: tern foraging in the marine environment during the breeding season. The main objectives of the Skrapesk program are to identify marine areas used by foraging terns during the breeding season and their possible spatial and temporal variation, to identify prey species exploited and to evaluate the possibility of using one or more parameters of the breeding biology of terns as an indicator of the quality of the marine environment for these species. The first year of the study raised some particularly interesting data on types of prey and fishing areas. Note de contenu : Écologie alimentaire des sternes se reproduisant aux Glénan et en baie de Morlaix Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Programme SKRAPESK : exploitation du milieu marin par les sternes en période de reproduction [texte imprimé] / Bernard Cadiou, Auteur . - 2013 . - pp. 23-28. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 23-28 Catégories : Sites FR - Archipel des Glénan (Fouesnant) ; FR - Baie de Morlaix Mots-clés : sterne  laridés  Laridae Résumé : Skrapesk program: tern foraging in the marine environment during the breeding season. The main objectives of the Skrapesk program are to identify marine areas used by foraging terns during the breeding season and their possible spatial and temporal variation, to identify prey species exploited and to evaluate the possibility of using one or more parameters of the breeding biology of terns as an indicator of the quality of the marine environment for these species. The first year of the study raised some particularly interesting data on types of prey and fishing areas. Note de contenu : Écologie alimentaire des sternes se reproduisant aux Glénan et en baie de Morlaix Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Le cormoran huppé Phalacrocorax aristotelis, sentinelle du Mor Braz - programme CORMOR 2011-2013 / Matthieu Fortin in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 29-36 Titre : Le cormoran huppé Phalacrocorax aristotelis, sentinelle du Mor Braz - programme CORMOR 2011-2013 Titre original : Le Cormoran huppé, un indicateur de la qualité des écosystèmes côtiers ? Type de document : texte imprimé Auteurs : Matthieu Fortin, Auteur ; Christophe Barbraud, Auteur ; Philippe Maes, Auteur Année de publication : 2013 Article en page(s) : pp. 29-36 Langues : Français (fre) Catégories : Sites FR - Mor Braz Résumé : An integrated research program was initiated since 2004 to evaluate if the European shag Phalacrocorax aristotelis can be used as a robust indicator of the marine environment in Mor Braz, southern Brittany, France. European Shag is a sedentary seabird which show important population fluctuation related to environmental variation. Its ecology aspects such as demography, diet and at-sea distribution provide key information to improve general understanding of marine ecology in southern Britany. Three breeding colony has been studied to identify: • Demography (breeding success, survival rate) • Spatial distribution (colony parameters, at-sea distribution) • Diet (foraging strategy, prey availability) • Anthropic interactions (fishing, recreation activities, disturbance) This program has initiated modelling environmental parameters influence on population dynamics to describe functional relationship between oceanic ecosystems and a top predator biology. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Le cormoran huppé Phalacrocorax aristotelis, sentinelle du Mor Braz - programme CORMOR 2011-2013 = Le Cormoran huppé, un indicateur de la qualité des écosystèmes côtiers ? [texte imprimé] / Matthieu Fortin, Auteur ; Christophe Barbraud, Auteur ; Philippe Maes, Auteur . - 2013 . - pp. 29-36. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 29-36 Catégories : Sites FR - Mor Braz Résumé : An integrated research program was initiated since 2004 to evaluate if the European shag Phalacrocorax aristotelis can be used as a robust indicator of the marine environment in Mor Braz, southern Brittany, France. European Shag is a sedentary seabird which show important population fluctuation related to environmental variation. Its ecology aspects such as demography, diet and at-sea distribution provide key information to improve general understanding of marine ecology in southern Britany. Three breeding colony has been studied to identify: • Demography (breeding success, survival rate) • Spatial distribution (colony parameters, at-sea distribution) • Diet (foraging strategy, prey availability) • Anthropic interactions (fishing, recreation activities, disturbance) This program has initiated modelling environmental parameters influence on population dynamics to describe functional relationship between oceanic ecosystems and a top predator biology. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Campagnes pelgas : dynamique des petits poissons pélagiques et relations trophiques avec les autres compartiments de l’écosystème pélagique du golfe de Gascogne / Tiphaine Chouvelon in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 37-41 Titre : Campagnes pelgas : dynamique des petits poissons pélagiques et relations trophiques avec les autres compartiments de l’écosystème pélagique du golfe de Gascogne Type de document : texte imprimé Auteurs : Tiphaine Chouvelon, Auteur ; Jacques Massé, Auteur ; Jérôme Spitz, Auteur ; Ghislain Dorémus, Auteur Année de publication : 2013 Article en page(s) : pp. 37-41 Langues : Français (fre) Mots-clés : campagne océanographique Résumé : PELGAS surveys: small pelagic fish dynamics and trophic relationships with other compartments of the pelagic ecosystem of the Bay of Biscay Ecosystemic PELGAS surveys occur each year in spring in the Bay of Biscay (North-East Atlantic) since 2000. The first objective was to assess small pelagic fish resources in a management point of view, particularly for European anchovy which is managed by Total Allowable Catch (TAC). Nevertheless, the wide panel of parameters and data collected during PELGAS surveys allows a direct use of them in the frame of the international request for the European Marine Strategy Framework Directive (MSFD), notably for producing indicators of the Bay of Biscay pelagic ecosystem’s ecological state. Current objectives of Pelgas surveys are thus multiple. In total, four teams work together on board, allowing all compartments of the ecosystem to be studied, and the sampling strategy covers the same transect network each year (Fig. 1). Along the temporal series, it has been highlighted strong variations in abundance and distribution for most of pelagic fish species, probably linked to recruitment for short-lived species (e.g. anchovy) and/or to migration patterns (e.g. sardine). However, no obvious controlling factors have been evidenced yet for explaining general fluctuations in the small pelagic fish community in the area, as well as the impact of such fluctuations on their predators (e.g. seabirds, marine mammals, large fish). There is then a crucial need today to improve studies of linkages and interactions between compartments from data collected during Pelgas surveys, such as between plankton and pelagic fish (e.g. Chouvelon et al. under review) or between fish and their predators (e.g. Certain et al. 2011), especially now that more than 10 years temporal series of data are available for each compartment of the pelagic ecosystem. However concerning top predators, if the trophic ecology of the principal cetacean species in the Bay of Biscay is well known (notably through stranded animals, e.g. Spitz et al. 2006), very little is known about seabirds’ trophic ecology and pelagic fish consumption in the area. A better knowledge of seabirds diet in this peculiar area is therefore needed for conservation issues concerning seabirds. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Campagnes pelgas : dynamique des petits poissons pélagiques et relations trophiques avec les autres compartiments de l’écosystème pélagique du golfe de Gascogne [texte imprimé] / Tiphaine Chouvelon, Auteur ; Jacques Massé, Auteur ; Jérôme Spitz, Auteur ; Ghislain Dorémus, Auteur . - 2013 . - pp. 37-41. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 37-41 Mots-clés : campagne océanographique Résumé : PELGAS surveys: small pelagic fish dynamics and trophic relationships with other compartments of the pelagic ecosystem of the Bay of Biscay Ecosystemic PELGAS surveys occur each year in spring in the Bay of Biscay (North-East Atlantic) since 2000. The first objective was to assess small pelagic fish resources in a management point of view, particularly for European anchovy which is managed by Total Allowable Catch (TAC). Nevertheless, the wide panel of parameters and data collected during PELGAS surveys allows a direct use of them in the frame of the international request for the European Marine Strategy Framework Directive (MSFD), notably for producing indicators of the Bay of Biscay pelagic ecosystem’s ecological state. Current objectives of Pelgas surveys are thus multiple. In total, four teams work together on board, allowing all compartments of the ecosystem to be studied, and the sampling strategy covers the same transect network each year (Fig. 1). Along the temporal series, it has been highlighted strong variations in abundance and distribution for most of pelagic fish species, probably linked to recruitment for short-lived species (e.g. anchovy) and/or to migration patterns (e.g. sardine). However, no obvious controlling factors have been evidenced yet for explaining general fluctuations in the small pelagic fish community in the area, as well as the impact of such fluctuations on their predators (e.g. seabirds, marine mammals, large fish). There is then a crucial need today to improve studies of linkages and interactions between compartments from data collected during Pelgas surveys, such as between plankton and pelagic fish (e.g. Chouvelon et al. under review) or between fish and their predators (e.g. Certain et al. 2011), especially now that more than 10 years temporal series of data are available for each compartment of the pelagic ecosystem. However concerning top predators, if the trophic ecology of the principal cetacean species in the Bay of Biscay is well known (notably through stranded animals, e.g. Spitz et al. 2006), very little is known about seabirds’ trophic ecology and pelagic fish consumption in the area. A better knowledge of seabirds diet in this peculiar area is therefore needed for conservation issues concerning seabirds. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Histoire de vie et connectivité entre habitats essentiels de 3 espèces de lançons, approche par les marqueurs environnementaux / Flora Laugier in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 42-46 Titre : Histoire de vie et connectivité entre habitats essentiels de 3 espèces de lançons, approche par les marqueurs environnementaux Type de document : texte imprimé Auteurs : Flora Laugier, Auteur ; Eric Feunteun, Auteur ; Alexandre Carpentier, Auteur Année de publication : 2013 Article en page(s) : pp. 42-46 Langues : Français (fre) Résumé : Although sandeels are intermediate species in marine food webs and an important trophic source for many predators (fishes, birds and marine mammals), their ecology remains relatively poorly known. Variation in stocks of sandeel can have notably major effects on the breeding success and survival of their predators. They spend a lot of time buried dormant in sand, venturing out only to feed in the water column at different time scales (daily, seasonal, life cycle). Even if very coarse sand banks are often described as their favorite habitats, the potential distinction between Essential Ecological Habitats (EEH: spawning, feeding, resting and nursery habitats) has still not been studied. Consequently, we aimed to better understand sandeel’s life history and the use of intertidal and subtidal sand habitats through environmental tracers such as otolith elemental fingerprint and stable isotopes (δ13C and δ15N in muscle). Connectivity hypothesis between habitats are explored comparing microchemistry fingerprints from the center to the edge of otoliths. Samplings in intertidal and subtidal areas show different specific composition and age structure. We sampled four species of sandeels (Ammodytes tobianus, Hyperoplus lanceolatus, Hyperoplus immaculatus and Gymnammodytes semisquamatus) among five reported in the Normand-Breton Gulf by Le Mao (2009) and focused on Hyperoplus for analyses. Otolith’s fingerprints suggest that most H. immaculatus use both intertidal and subtidal habitats during their life, although this species appeared more abundant in subtidal sites. More precisely, the first life stages (i.e. larval and juvenile) of both Hyperoplus species seem to occur in intertidal zones suggesting that very coarse sand beaches serve as nursery and maybe spawning habitats. Stable isotopes showed strong 15N enrichment in H. lanceolatus muscle tissues, indicating an upper trophic level for this species, which could be a predator to other sandeel species. Finally, we highlight that these sympatric species have contrasted ecology with regard to their trophic level, life history or spatial distribution and could inhabit different habitats during their life. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Histoire de vie et connectivité entre habitats essentiels de 3 espèces de lançons, approche par les marqueurs environnementaux [texte imprimé] / Flora Laugier, Auteur ; Eric Feunteun, Auteur ; Alexandre Carpentier, Auteur . - 2013 . - pp. 42-46. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 42-46 Résumé : Although sandeels are intermediate species in marine food webs and an important trophic source for many predators (fishes, birds and marine mammals), their ecology remains relatively poorly known. Variation in stocks of sandeel can have notably major effects on the breeding success and survival of their predators. They spend a lot of time buried dormant in sand, venturing out only to feed in the water column at different time scales (daily, seasonal, life cycle). Even if very coarse sand banks are often described as their favorite habitats, the potential distinction between Essential Ecological Habitats (EEH: spawning, feeding, resting and nursery habitats) has still not been studied. Consequently, we aimed to better understand sandeel’s life history and the use of intertidal and subtidal sand habitats through environmental tracers such as otolith elemental fingerprint and stable isotopes (δ13C and δ15N in muscle). Connectivity hypothesis between habitats are explored comparing microchemistry fingerprints from the center to the edge of otoliths. Samplings in intertidal and subtidal areas show different specific composition and age structure. We sampled four species of sandeels (Ammodytes tobianus, Hyperoplus lanceolatus, Hyperoplus immaculatus and Gymnammodytes semisquamatus) among five reported in the Normand-Breton Gulf by Le Mao (2009) and focused on Hyperoplus for analyses. Otolith’s fingerprints suggest that most H. immaculatus use both intertidal and subtidal habitats during their life, although this species appeared more abundant in subtidal sites. More precisely, the first life stages (i.e. larval and juvenile) of both Hyperoplus species seem to occur in intertidal zones suggesting that very coarse sand beaches serve as nursery and maybe spawning habitats. Stable isotopes showed strong 15N enrichment in H. lanceolatus muscle tissues, indicating an upper trophic level for this species, which could be a predator to other sandeel species. Finally, we highlight that these sympatric species have contrasted ecology with regard to their trophic level, life history or spatial distribution and could inhabit different habitats during their life. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Monitoring des oiseaux marins : les actions coordonnees par l’OROM (Observatoire Régional des Oiseaux Marins) en bretagne et par le GISOM (groupement d'intérêt scientifique oiseaux marins) en france / Bernard Cadiou in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 47-52 Titre : Monitoring des oiseaux marins : les actions coordonnees par l’OROM (Observatoire Régional des Oiseaux Marins) en bretagne et par le GISOM (groupement d'intérêt scientifique oiseaux marins) en france Type de document : texte imprimé Auteurs : Bernard Cadiou, Auteur ; Christophe Barbraud, Auteur Année de publication : 2013 Article en page(s) : pp. 47-52 Langues : Français (fre) Résumé : Seabird monitoring coordinated in Brittany by OROM and in France by GISOM (French seabird group) A seabird monitoring programme has been launched in Brittany (western France) in 2009, with different partners involved in collating data on breeding numbers and productivity for the different seabird species. At the national scale, such coordinated annual monitoring does not exist at the moment but decadal seabird censuses are coordinated by the Gisom (French seabird group) and guidelines were compiled and disseminated on standardized monitoring methods. A preliminary work has also been carried out in 2012 to develop an indicator of seabird population trends. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Monitoring des oiseaux marins : les actions coordonnees par l’OROM (Observatoire Régional des Oiseaux Marins) en bretagne et par le GISOM (groupement d'intérêt scientifique oiseaux marins) en france [texte imprimé] / Bernard Cadiou, Auteur ; Christophe Barbraud, Auteur . - 2013 . - pp. 47-52. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 47-52 Résumé : Seabird monitoring coordinated in Brittany by OROM and in France by GISOM (French seabird group) A seabird monitoring programme has been launched in Brittany (western France) in 2009, with different partners involved in collating data on breeding numbers and productivity for the different seabird species. At the national scale, such coordinated annual monitoring does not exist at the moment but decadal seabird censuses are coordinated by the Gisom (French seabird group) and guidelines were compiled and disseminated on standardized monitoring methods. A preliminary work has also been carried out in 2012 to develop an indicator of seabird population trends. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

Définition des IBAs sur l’exemple du programme FAME / Amélie Boué in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) Titre : Définition des IBAs sur l’exemple du programme FAME Type de document : texte imprimé Auteurs : Amélie Boué, Auteur ; David Grémillet, Auteur Année de publication : 2013 Langues : Français (fre) Catégories : Sites Sept Iles (Perros-Guirec - 22) Résumé : Marine Important Bird Areas : Fame output During the Interreg FAME programme (Future of the Atlantic Marine Environment 2010-2012), seabirds experts from 5 countries (Ireland, UK, France, Spain and Portugal) avec decided to share their methodologies to identify seabirds hotspots and Important Bird Areas when possible. Based on 5 years GPS data gathered on the Rouzic Gannet colony, in collaboration with the Natural reserve LPO staff and the CEFE-Montpellier research team (D.Grémillet), the BirdLife method and criteria were applied on the dataset and stables core areas matching IBAs criteria were identified for Northern Gannet. One of these foraging grounds is very consistent with the 2008 first network of marine IBAs ( it is now partially included in 2 SPAs) and the other one is a large transnational area (UK, France) in the Channel. These areas, of around 2000 km2 for the first one, and 3500 km2 for the second one, could both be designated as Marine Protected Areas. The IBA methodology only requires bird tracking data, and can lead to management recommendations, that can be complemented by habitat modeling. Both approaches are interesting and advisable, depending on time/resource availability and conservation target. Annual variations are detected and taken into account by both methodologies. Using habitat modeling, critical features that can explain this variation, can be identified. In this case, habitat modeling can complement the IBA methodology. In the present case study, annual variations were marginal and the IBA method led to the identification of both areas with a long term importance for the Northern Gannets from Rouzic Island. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] Définition des IBAs sur l’exemple du programme FAME [texte imprimé] / Amélie Boué, Auteur ; David Grémillet, Auteur . - 2013. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) Catégories : Sites Sept Iles (Perros-Guirec - 22) Résumé : Marine Important Bird Areas : Fame output During the Interreg FAME programme (Future of the Atlantic Marine Environment 2010-2012), seabirds experts from 5 countries (Ireland, UK, France, Spain and Portugal) avec decided to share their methodologies to identify seabirds hotspots and Important Bird Areas when possible. Based on 5 years GPS data gathered on the Rouzic Gannet colony, in collaboration with the Natural reserve LPO staff and the CEFE-Montpellier research team (D.Grémillet), the BirdLife method and criteria were applied on the dataset and stables core areas matching IBAs criteria were identified for Northern Gannet. One of these foraging grounds is very consistent with the 2008 first network of marine IBAs ( it is now partially included in 2 SPAs) and the other one is a large transnational area (UK, France) in the Channel. These areas, of around 2000 km2 for the first one, and 3500 km2 for the second one, could both be designated as Marine Protected Areas. The IBA methodology only requires bird tracking data, and can lead to management recommendations, that can be complemented by habitat modeling. Both approaches are interesting and advisable, depending on time/resource availability and conservation target. Annual variations are detected and taken into account by both methodologies. Using habitat modeling, critical features that can explain this variation, can be identified. In this case, habitat modeling can complement the IBA methodology. In the present case study, annual variations were marginal and the IBA method led to the identification of both areas with a long term importance for the Northern Gannets from Rouzic Island. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64

La désignation et la gestion des AMP (Aires Marines Protégées) pour les oiseaux marins, de la théorie à la pratique / Laurent Germain in Ar Vran, vol. 24 n°2 (2013)

Public ISBD Faire une suggestion d'achat [article]  inAr Vran > vol. 24 n°2 (2013) . - pp. 57-63 Titre : La désignation et la gestion des AMP (Aires Marines Protégées) pour les oiseaux marins, de la théorie à la pratique Type de document : texte imprimé Auteurs : Laurent Germain, Auteur Année de publication : 2013 Article en page(s) : pp. 57-63 Langues : Français (fre) Résumé : Number of international texts define criteria for selecting MPAs for sea birds: - Level of importance for population of threatened or migratory species - Ecological significance for populations : stages of life cycle key sites - Representativity - Sensitivity - High naturalness Beyond those useful frameworks, scientific and public bodies have to launch knowledge programs in order to gather enough datas to perform decision on designation, management and monitoring. Facing same commitments EU Member States, recentely and actively selecte sea birds MPAs (OSPAR, Birds directive, RAMSAR, national MPAs), start to apply management tool and assess efficacity. But, challenges are huge since they have to manage mobility of species and pressures, different scales (from local breeding areas to large feeding areas, from individual MPA to international and shared network). No doubt that a lot of progress have to be done in a better knowledge for management issues, hoping that precautionary principle could avoid definitive impact. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64 [article] La désignation et la gestion des AMP (Aires Marines Protégées) pour les oiseaux marins, de la théorie à la pratique [texte imprimé] / Laurent Germain, Auteur . - 2013 . - pp. 57-63. Langues : Français (fre) in Ar Vran > vol. 24 n°2 (2013) . - pp. 57-63 Résumé : Number of international texts define criteria for selecting MPAs for sea birds: - Level of importance for population of threatened or migratory species - Ecological significance for populations : stages of life cycle key sites - Representativity - Sensitivity - High naturalness Beyond those useful frameworks, scientific and public bodies have to launch knowledge programs in order to gather enough datas to perform decision on designation, management and monitoring. Facing same commitments EU Member States, recentely and actively selecte sea birds MPAs (OSPAR, Birds directive, RAMSAR, national MPAs), start to apply management tool and assess efficacity. But, challenges are huge since they have to manage mobility of species and pressures, different scales (from local breeding areas to large feeding areas, from individual MPA to international and shared network). No doubt that a lot of progress have to be done in a better knowledge for management issues, hoping that precautionary principle could avoid definitive impact. Type de document : Périodique Permalink : https://pmb.bretagne-vivante.org/pmb/opac_css/index.php?lvl=notice_display&id=64