Description
Original provider: Observatoire pour la Conservation et l'Etude des Animaux et Milieux Marins (OCEAMM) Dataset credits: Observatoire pour la Conservation et l'Etude des Animaux et Milieux Marins (OCEAMM) Abstract: Small cetaceans can use a variety of habitats and are generally wide-ranging. For this reason, extensive sighting surveys to assess their distribution, abundance, and habitat preference are needed. In this study, we conducted systematic surveys to document the distribution of the harbor porpoise observed in the English Channel (North Sea, France). The English Channel is an epicontinental sea. It constitutes a relatively narrow link between the Atlantic Ocean and the North Sea and is influenced by strong tides and freshwater inputs, which create well-mixed waters. The harbor porpoise is placed under Appendix II of the European Union Habitats Directive, and an assessment of his status and distribution in the English Channel, very exposed to human activities, is much needed to identify conservation and management strategies. Therefore, we conducted surveys following a series of predetermined saw-tooth transect lines to study the distribution of the harbor porpoise (Phocoena phocoena). Boat transect were conducted using a Sealine Stateman 35, equipped with two 230 hp Volvo inboard engine at speed around 10 knots. Surveys were made as many days as possible throughout the season at sea state of Beaufort 3 or less, between March 2009 and September 2011. For each animal sighting, the species, angle of sighting, the distance from the boat, the group size and composition, the general behavior and the swimming direction were recorded.
Data Records
The data in this occurrence resource has been published as a Darwin Core Archive (DwC-A), which is a standardized format for sharing biodiversity data as a set of one or more data tables. The core data table contains 146 records.
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.
Versions
The table below shows only published versions of the resource that are publicly accessible.
How to cite
Researchers should cite this work as follows:
Bouveroux, T. 2011. OCEAMM harbor porpoise sightings in the North Sea. Data downloaded from OBIS-SEAMAP (http://seamap.env.duke.edu/dataset/779) on yyyy-mm-dd.
Rights
Researchers should respect the following rights statement:
The publisher and rights holder of this work is OBIS-SEAMAP. This work is licensed under a Creative Commons Attribution Non Commercial (CC-BY-NC 4.0) License.
GBIF Registration
This resource has been registered with GBIF, and assigned the following GBIF UUID: 37e632a2-dcea-483d-94e1-52fafd26412a. OBIS-SEAMAP publishes this resource, and is itself registered in GBIF as a data publisher endorsed by Ocean Biodiversity Information System.
Keywords
Occurrence,Vessels,Sightings,Harbour porpoise,Phocoena phocoena,English Channel; Observation; Occurrence
External data
The resource data is also available in other formats
| OBIS-SEAMAP Dataset Page | http://seamap.env.duke.edu/dataset/779 UTF-8 Interactive map |
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| FGDC Metadata | http://seamap.env.duke.edu/dataset/779/xml UTF-8 XML |
Contacts
- Metadata Provider ●
- Distributor
Geographic Coverage
Oceans
| Bounding Coordinates | South West [50.478, 1.271], North East [51.308, 2.498] |
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Taxonomic Coverage
Scientific names are based on the Integrated Taxonomic Information System (ITIS).
| Species | Phocoena phocoena (Harbor Porpoise) |
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Temporal Coverage
| Start Date / End Date | 2009-03-18 / 2011-09-03 |
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Project Data
No Description available
| Title | OCEAMM harbor porpoise sightings in the North Sea |
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| Funding | NA |
The personnel involved in the project:
- Owner
Sampling Methods
NA
| Study Extent | NA |
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Method step description:
- NA
Collection Data
| Collection Name | zd_779 |
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| Collection Identifier | zd_779 |
| Parent Collection Identifier | OBIS-SEAMAP |
Additional Metadata
marine, harvested by iOBIS
| Purpose | Not available |
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| Alternative Identifiers | http://ipt.env.duke.edu/resource?r=zd_779 |