New sightings records of marine mammals and seabirds off French Guiana

ABSTRACT French Guiana region is one of the most productive in the world and hosts a wide variety of marine vertebrates. In the same time, anthropogenic activities are a growing concern in French Guiana, both in coastal and offshore areas. However, few studies are published on marine mammals, seabir...

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Autores principales:	Martinez,Ludivine, Geraldes,Dinis, Suardi,Alessandra, Wyss,Virginie, Dutrieux,Eric, Chaineau,Claude-Henri
Lenguaje:	English
Publicado:	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar 2019
Materias:	cetaceans seabirds humpback whales distribution opportunistic data French Guiana
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000500753
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spelling	oai:scielo:S0718-560X20190005007532019-12-05New sightings records of marine mammals and seabirds off French GuianaMartinez,LudivineGeraldes,DinisSuardi,AlessandraWyss,VirginieDutrieux,EricChaineau,Claude-Henri cetaceans seabirds humpback whales distribution opportunistic data French Guiana ABSTRACT French Guiana region is one of the most productive in the world and hosts a wide variety of marine vertebrates. In the same time, anthropogenic activities are a growing concern in French Guiana, both in coastal and offshore areas. However, few studies are published on marine mammals, seabirds and potential interactions. Twenty-three marine mammal species are known to occur in the Exclusive Economic Zone (EEZ) and important seabird breeding sites are located in the area. Most of the existing literature relates to breeding birds and coastal cetaceans, but the continental slope appears to be an essential habitat for marine mammals and seabirds. Between October 22 and November 23, 2017, an oceanographic survey was conducted on the Guiana slope to study the quality of sediments and water. Three marine fauna observers (MFOs) were onboard to record sightings of marine mammals and seabirds opportunistically. During 462 h of visual effort in good sighting conditions, 313 sightings (824 individuals) were recorded: 61 marine mammals (501 individuals) and 252 seabirds (323 individuals). Seven seabird families were observed: Laridae (42%), Fregatidae (26%), Procellariidae (12%), Stercorariidae (10%), Hydrobatidae (4%), Sulidae (2%) and Phaethontidae (1%). 3% concerned wader species. The most frequently observed seabird species was the magnificent frigatebird (Fregata magnificens), as well as the common tern (Sterna hirundo), Cory's shearwater (Calonectris diomedea) and the pomarine jaeger (Stercorarius pomarinus). Many Delphinidae species were observed (Stenella longirostris, Stenella attenuata, Stenella frontalis, Delphinus delphis, Tursiops truncatus) in addition to sperm whales (Physeter macrocephalus) and humpback whales (Megaptera novaeangliae). Only a few sightings of humpback whales have been previously recorded in this area. Sighted individuals were mainly mother-calf pairs suggesting that the area may be an extended part of a calving ground for humpback whales.info:eu-repo/semantics/openAccessPontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del MarLatin american journal of aquatic research v.47 n.5 20192019-11-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000500753en10.3856/vol47-issue5-fulltext-4
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	cetaceans seabirds humpback whales distribution opportunistic data French Guiana
spellingShingle	cetaceans seabirds humpback whales distribution opportunistic data French Guiana Martinez,Ludivine Geraldes,Dinis Suardi,Alessandra Wyss,Virginie Dutrieux,Eric Chaineau,Claude-Henri New sightings records of marine mammals and seabirds off French Guiana
description	ABSTRACT French Guiana region is one of the most productive in the world and hosts a wide variety of marine vertebrates. In the same time, anthropogenic activities are a growing concern in French Guiana, both in coastal and offshore areas. However, few studies are published on marine mammals, seabirds and potential interactions. Twenty-three marine mammal species are known to occur in the Exclusive Economic Zone (EEZ) and important seabird breeding sites are located in the area. Most of the existing literature relates to breeding birds and coastal cetaceans, but the continental slope appears to be an essential habitat for marine mammals and seabirds. Between October 22 and November 23, 2017, an oceanographic survey was conducted on the Guiana slope to study the quality of sediments and water. Three marine fauna observers (MFOs) were onboard to record sightings of marine mammals and seabirds opportunistically. During 462 h of visual effort in good sighting conditions, 313 sightings (824 individuals) were recorded: 61 marine mammals (501 individuals) and 252 seabirds (323 individuals). Seven seabird families were observed: Laridae (42%), Fregatidae (26%), Procellariidae (12%), Stercorariidae (10%), Hydrobatidae (4%), Sulidae (2%) and Phaethontidae (1%). 3% concerned wader species. The most frequently observed seabird species was the magnificent frigatebird (Fregata magnificens), as well as the common tern (Sterna hirundo), Cory's shearwater (Calonectris diomedea) and the pomarine jaeger (Stercorarius pomarinus). Many Delphinidae species were observed (Stenella longirostris, Stenella attenuata, Stenella frontalis, Delphinus delphis, Tursiops truncatus) in addition to sperm whales (Physeter macrocephalus) and humpback whales (Megaptera novaeangliae). Only a few sightings of humpback whales have been previously recorded in this area. Sighted individuals were mainly mother-calf pairs suggesting that the area may be an extended part of a calving ground for humpback whales.
author	Martinez,Ludivine Geraldes,Dinis Suardi,Alessandra Wyss,Virginie Dutrieux,Eric Chaineau,Claude-Henri
author_facet	Martinez,Ludivine Geraldes,Dinis Suardi,Alessandra Wyss,Virginie Dutrieux,Eric Chaineau,Claude-Henri
author_sort	Martinez,Ludivine
title	New sightings records of marine mammals and seabirds off French Guiana
title_short	New sightings records of marine mammals and seabirds off French Guiana
title_full	New sightings records of marine mammals and seabirds off French Guiana
title_fullStr	New sightings records of marine mammals and seabirds off French Guiana
title_full_unstemmed	New sightings records of marine mammals and seabirds off French Guiana
title_sort	new sightings records of marine mammals and seabirds off french guiana
publisher	Pontificia Universidad Católica de Valparaíso. Facultad de Recursos Naturales. Escuela de Ciencias del Mar
publishDate	2019
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-560X2019000500753
work_keys_str_mv	AT martinezludivine newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana AT geraldesdinis newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana AT suardialessandra newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana AT wyssvirginie newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana AT dutrieuxeric newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana AT chaineauclaudehenri newsightingsrecordsofmarinemammalsandseabirdsofffrenchguiana
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New sightings records of marine mammals and seabirds off French Guiana

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