Descrição
Original provider: Sea Mammal Research Unit, University of St. Andrews Dataset credits: Sea Mammal Research Unit, University of St. Andrews Abstract: The European Union (EU) Habitats Directive requires Member States to monitor and maintain at favourable conservation status those species identified to be in need of protection, including all cetaceans. In July 2005 we surveyed the entire EU Atlantic continental shelf to generate robust estimates of abundance for harbour porpoise and other cetacean species. The survey used line transect sampling methods and purpose built data collection equipment designed to minimise bias in estimates of abundance. Shipboard transects covered 19,725 km in sea conditions <= Beaufort 4 in an area of 1,005,743 km2. Aerial transects covered 15,802 km in good/moderate conditions (<= Beaufort 3) in an area of 364,371 km2. Thirteen cetacean species were recorded; abundance was estimated for harbour porpoise (375,358; CV = 0.197), bottlenose dolphin (16,485; CV = 0.422), white-beaked dolphin (16,536; CV = 0.303), short-beaked common dolphin (56,221; CV = 0.234) and minke whale (18,958; CV = 0.347). Abundance in 2005 was similar to that estimated in July 1994 for harbour porpoise, white-beaked dolphin and minke whale in a comparable area. However, model-based density surfaces showed a marked difference in harbour porpoise distribution between 1994 and 2005. Our results allow EU Member States to discharge their responsibilities under the Habitats Directive and inform other international organisations concerning the assessment of conservation status of cetaceans and the impact of bycatch at a large spatial scale. The lack of evidence for a change in harbour porpoise abundance in EU waters as a whole does not exclude the possibility of an impact of bycatch in some areas. Monitoring bycatch and estimation of abundance continue to be essential. Supplemental information: Surveys from seven different vessels were merged. Each vessel contained two sightings platforms running concurrently – primary and tracker. This dataset includes sightings from the primary platform. Sightings from the tracker platform are registered in SCANS II cetacean sightings on tracker platform of vessel surveys 2005. Effort or vessel tracks for these surveys are provided with this dataset. Survey conditions such as sea state, glare, swell, wind are found in the effort data. In the primary platform, normal binoculars were used and distance and angle were estimated by observer on the vessel with raditional bearing board and range finder-stick.
Registros de Dados
Os dados deste recurso de ocorrência foram publicados como um Darwin Core Archive (DwC-A), que é o formato padronizado para compartilhamento de dados de biodiversidade como um conjunto de uma ou mais tabelas de dados. A tabela de dados do núcleo contém 1.011 registros.
This IPT archives the data and thus serves as the data repository. The data and resource metadata are available for download in the downloads section. The versions table lists other versions of the resource that have been made publicly available and allows tracking changes made to the resource over time.
Versões
A tabela abaixo mostra apenas versões de recursos que são publicamente acessíveis.
Como citar
Pesquisadores deveriam citar esta obra da seguinte maneira:
Lacey, C. 2014. SCANS II cetacean sightings on primary platform of vessel surveys 2005. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/1150) on yyyy-mm-dd.
Direitos
Pesquisadores devem respeitar a seguinte declaração de direitos:
O editor e o detentor dos direitos deste trabalho é OBIS-SEAMAP. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF Registration
Este recurso foi registrado no GBIF e atribuído ao seguinte GBIF UUID: 32920bfb-a28c-4cfd-a30f-b78eb1320d81. OBIS-SEAMAP publica este recurso, e está registrado no GBIF como um publicador de dados aprovado por Ocean Biodiversity Information System.
Palavras-chave
Occurrence,Marine Animal Survey,Marine Biology,Marine mammals,Sea turtles,Visual Sighting,Vessel; Observation; Occurrence
Dados externos
Os dados de recurso também estão disponíveis em outros formatos
| OBIS-SEAMAP Dataset Page | http://seamap.env.duke.edu/dataset/1150 UTF-8 Interactive map |
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| FGDC Metadata | http://seamap.env.duke.edu/dataset/1150/xml UTF-8 XML |
Contatos
- Proprietário ●
- Originador ●
- Ponto De Contato
- Provedor Dos Metadados ●
- Distribuidor
Cobertura Geográfica
North Atlantic Ocean,European Atlantic shelf waters
| Coordenadas delimitadoras | Sul Oeste [35,96, -11,93], Norte Leste [61,99, 12,6] |
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Cobertura Taxonômica
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Subclasse | Elasmobranchii (cartilaginous fishes) |
|---|---|
| Ordem | Cetacea (cetaceans), Cetacea (cetaceans), Cetacea (cetaceans), Cetacea (cetaceans) |
| Subordem | Caniformia (pinnipeds), Odontoceti (toothed whales) |
| Família | Delphinidae (dolphins), Delphinidae (dolphins), Delphinidae (dolphins) |
| Gênero | Lagenorhynchus (white-beaked dolphins) |
| Espécie | Tursiops truncatus (Common Bottlenose Dolphin), Prionace glauca (blue shark), Cetorhinus maximus (basking shark), Ziphius cavirostris (Cuvier's Beaked Whale), Delphinus delphis (Short-beaked Common Dolphin), Balaenoptera physalus (Fin Whale), Phocoena phocoena (Harbor Porpoise), Halichoerus grypus (Atlantic gray seal), Phocoena phocoena (Harbor Porpoise), Orcinus orca (Killer Whale), Globicephala melas (Long-finned Pilot Whale), Dermochelys coriacea (Leatherback Sea Turtle), Mola mola (ocean sunfish), Balaenoptera acutorostrata (Minke Whale), Phoca vitulina (Harbor Seal), Grampus griseus (Risso's Dolphin), Stenella coeruleoalba (Striped Dolphin), Lagenorhynchus albirostris (White-beaked Dolphin), Lagenorhynchus acutus (Atlantic White-sided Dolphin) |
Cobertura Temporal
| Data Inicial / Data final | 2005-06-29 / 2005-07-28 |
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Dados Sobre o Projeto
Nenhuma descrição disponível
| Título | SCANS II cetacean sightings on primary platform of vessel surveys 2005 |
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| Financiamento | NA |
O pessoal envolvido no projeto:
- Proprietário
Métodos de Amostragem
NA
| Área de Estudo | NA |
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Descrição dos passos do método:
- NA
Dados de Coleção
| Nome da Coleção | zd_1150 |
|---|---|
| Identificador da Coleção | zd_1150 |
| Identificador da Coleção Parental | OBIS-SEAMAP |
Metadados Adicionais
marine, harvested by iOBIS
| Propósito | Not available |
|---|---|
| Identificadores alternativos | http://ipt.env.duke.edu/resource?r=zd_1150 |