Annual Monitoring of the Distribution and Abundance of Cetaceans and Marine Birds in the Bay of Biscay and the English Channel within the context of Fisheries Campaigns
The aim of these measures is to monitor the relative distribution and abundance of cetaceans and marine birds from Ifremer/IEO fisheries campaigns on board the Thalassa oceanographic vessel. These measures are also used to determine these predators’ favourite habitats thanks to the ecosystem approach of the campaigns (distribution and abundance of pelagic fish, plankton and physical parameters).
Simple
- Title
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Annual Monitoring of the Distribution and Abundance of Cetaceans and Marine Birds in the Bay of Biscay and the English Channel within the context of Fisheries Campaigns
- Date (Creation)
- 2003-01-01T00:00:00
- Citation identifier
- FR-DCSMM-PDS-SUIVI_CETACES
- Presentation form
- Digital profile
- Abstract
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The aim of these measures is to monitor the relative distribution and abundance of cetaceans and marine birds from Ifremer/IEO fisheries campaigns on board the Thalassa oceanographic vessel. These measures are also used to determine these predators’ favourite habitats thanks to the ecosystem approach of the campaigns (distribution and abundance of pelagic fish, plankton and physical parameters).
- Credit
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Data producers: Marine Mammal Research Centre (Centre de Recherche sur les Mammifères Marins) (UMS 3462) , LPO
- Status
- On going
- Point of contact
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Organisation name Individual name Electronic mail address Role Centre de Recherche sur les Mammifères Marins
Van Canneyt Olivier
Local service desk UMS 3462
Doremus Ghislain
Local service desk
- Maintenance and update frequency
- Annually
- Maintenance note
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Network duration : perennial network
- Theme
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Marine Mammals
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Marine birds
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Marine megafauna
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distribution
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abundance
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habitat
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GEMET - INSPIRE themes, version 1.0
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Environmental monitoring facilities
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Sous-regions marines
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Bay of Biscay
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Channel-North Sea
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Celtic Seas
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DCSMM : Type d'espace concerné
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Pas d'espace particulier concerné
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DCSMM : Descripteurs
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D1: Biodiversity
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D1: Biodiversité - Mammifères
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DCSMM : Méthodes de recueil des données
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Observation par transect
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Thèmes Sextant
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/Human Activities/Scientific Activities
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- Access constraints
- Other restrictions
- Other legal constraints
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Restricted Access
Data for personal (non-commercial) use only.
- Use limitation
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Basic data is public (species, position, data, campaign name) and can be freely accessed. It can be accessed via the UMS 3462 website which is currently under construction (Marine Mammal Research Centre.
Use of raw data (observation parameters and associated efforts) must be specifically requested from the Marine Mammal Research Centre, and a partnership agreement drawn up with the Marine Mammal Research Centre .
- Spatial representation type
- Vector
- Denominator
- 50000
- Language
- Français
- Character set
- UTF8
- Topic category
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- Biota
- Supplemental Information
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Project leader :
UMS 3462 (CRMM) 2003
Prime contractor :
UMS 3462 (CRMM) 2003
Financial Backing:
Marine Mammal Research Centre (non-profit organisation) April 2003-2004
Marine Mammal Research Centre, University of La Rochelle June 2004 Ministry for the Environment, Sustainable Development and Energy April 2003
Marine Protection Agency 20-10-2010 03-06-2012
- Reference system identifier
- EPSG / WGS 84 (EPSG:4326) / 7.9
- Topology level
- Geometry only
- Geometric object type
- Complex
- Geometric object count
- 0
- Hierarchy level
- Dataset
Conformance result
- Title
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Inspire specifications
- Date (Creation)
- 2012-01-16
- Explanation
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Non assessed
- Pass
- Statement
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15-05-2003: Data collected in the Bay of Biscay on PELAGIS campaigns (run by Ifremer Nantes) each spring (end April – beginning June) since 2003
15-01-2007: Data collected in the English Channel on IBTS campaigns (run by Ifremer Boulogne-sur-Mer) in January since 2007
01-04-2007: Data collected in the south of the Bay of Biscay on PELACUS campaigns (IEO Vigo, Spain) in spring (April) and autumn (September) since 2007.
Autumn campaigns run until the end of 2009
14-10-2009: Data collected in the Bay of Biscay on EVHOE campaigns (Ifremer) each autumn (mid-October to mid-November) since 2009.
Data collected by observers from UMS 3462 (CRMM) / La Rochelle university, by LPO or by the Spanish Oceanographic Institute. Around sixty observers participated in collecting data under the scientific responsibility of UMS 3462 (CRMM) at the heart of various fishing campaigns.
Number of observation or measurement points: 56650
The data is stored in a Higher Predators database
- Description
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The methodology is based on a simple observation platform: two observers are positioned on the bridge of the vessel and scan the surface of the water during observation legs (part of the journey between two stations or trawling runs). With each concentrating on observation on both sides of the route, their field of vision covers the front half of the vessel to indicate any object or animal detected near the surface when the vessel advances at a constant speed of around 10 knots. For observations of cetaceans and marine birds, the distance and the angle are measured at each contact in order to be able to estimate detection probability depending on the distance from the transect (a method known as “distance sampling”). The presence of waste, fishing equipment (static gear) designated by surface buoys and those of ships are also recorded, as are observations of surface fish (moon fish, sharks, tuna), and turtles.
The marine birds observed at the back of the vessel, often attracted by fishing activity are also recorded, but as "followers" and are therefore not included in the observations for prospection purposes. Similarly, during trawling operations (at speeds of 3 knots), and at stations for hydrological or photographic sampling (stationary), birds are also attracted, and the protocol applied during prospection is strongly biased during these maneuvers, therefore only one recording is taken by an observer, totaling the number of species and individuals attracted by the ship. In this way it is possible to indicate the presence of certain species of bird, particularly those which are not detected during prospection.
Observation effort (time spent observing in normal conditions) is of course also recorded and changes according to the vessel’s activity: underway (prospection), trawling or stationary.
Other parameters which could be used to analyse and correct bias relating to observation are recorded. This includes observation conditions (visibility, sea state, glare, etc.) recorded at each change in the weather or change in the vessel’s activity.
All of this information is recorded daily in a database which also includes navigation data, observation effort, conditions and the observations themselves in order to facilitate data processing.
- Description
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All the observations recorded only have quantitative (and qualitative) values when associated with the corresponding observation effort on a transect (n observation/n search time). This is part of the first phase of the analysis where the first presence/absence of individuals is evaluated according to the effort and the detection of species. During the second phase, filtered data can be extrapolated for the entire area studied.
- Description
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Type of data:
Mammals
Birds
Reptiles
Further information on the type of data:
Distribution and relative abundance relative of cetaceans and pinnipeds in French marine sub-regions
Parameter(s) observed or measured:
Observation effort (time and distance), observation conditions (weather, detection indices), species, number, age (adult, immature, juvenile, mixed), distance and angle of detection, route followed, general behaviour, specific behaviour, associations.
Resolution of parameter(s):
GPS position (1 per minute) during observation effort.
Update frequency: Annual
Observation frequency: Annual
- Description
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Sampling plans: Spatial
Metadata
- File identifier
- 678f9844-27cd-4f05-9aa1-610968886406
- Metadata language
- Français
- Other language
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Language Character encoding English
- Character set
- UTF8
- Hierarchy level
- Series
- Date stamp
- 2020-06-04T00:39:22
- Metadata standard name
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ISO 19115:2003/19139 - SEXTANT
- Metadata standard version
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1.0
- Metadata author
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Organisation name Individual name Electronic mail address Role Sextant
Local service desk