Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) distributions from scientific trawl surveys by-catches
Density (number per km²) and biomass (g per km²) of Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) observed in bottom trawl scientific surveys (French MEDITS and NOURMED) by-catches from 2012 to 2019
Simple
- Title
-
Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) distributions from scientific trawl surveys by-catches
- Date (Publication)
- 2020-03-15
- Citation identifier
- DOI:10.12770/27ad8f32-bd15-417c-b08d-064a713c9409
- Abstract
-
Density (number per km²) and biomass (g per km²) of Funiculina quadrangularis (Pennatulacea) and Isidella elongata (Alcyonacea) observed in bottom trawl scientific surveys (French MEDITS and NOURMED) by-catches from 2012 to 2019
- Credit
-
Marbec
- Point of contact
-
Organisation name Individual name Electronic mail address Role Ifremer
Vaz Sandrine
Author Ifremer
Publisher Ifremer
Certain Gregoire
Production Unit Ifremer
Jadaud Angelique
Production Unit
-
Thèmes Sextant
-
-
/Biological Environment/Species/Rare, Protected Species, and Species in Danger of Extinction
-
-
GEMET - INSPIRE themes, version 1.0
-
-
Species distribution
-
-
DCSMM : Descripteurs
-
-
D1: Coastal benthic habitats
-
-
Sous-regions marines
-
-
/Metropolitan France/Western Mediterranean
-
- Theme
-
-
MSFD - Marine Strategy Framework Directive
-
Benthic habitats
-
VME - Vulnerable Marine Ecosystem
-
-
Thématiques - SIMM
-
-
/Environmental Status/Habitats
-
-
Cadre Réglementaire - SIMM
-
-
Marine Strategy Framework Directive (MSFD)
-
-
Ocean Hackathon - City and challenge
-
-
/Toulon
-
- Use limitation
- CC-BY-NC-SA (Creative Commons - Attribution, No commercial usage, Sharing under the same conditions)
- Access constraints
- Other restrictions
- Use constraints
- Copyright
- Other legal constraints
-
Refer to MEDITS survey DOI
JADAUD Angélique (1994) MEDITS, https://doi.org/10.18142/7
VAZ Sandrine (2018) NOURMED, https://doi.org/10.18142/296
- Association Type
- Cross reference
- Initiative Type
- Platform
- Association Type
- Cross reference
- Initiative Type
- Platform
- Spatial representation type
- Vector
- Language
- English
- Character set
- UTF8
- Topic category
-
- Biota
- Begin date
- 2012-06-01
- End date
- 2019-06-30
- Reference system identifier
- EPSG / WGS 84 (EPSG:4326) / 7.4
- Geometric object type
- Point
- Distribution format
-
Name Version
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://sextant.ifremer.fr/services/wms/biologie IFR_IDEM_FUNIC_DENSITY
FILE
IFR_IDEM_FUNIC_DENSITY
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://sextant.ifremer.fr/services/wms/biologie IFR_IDEM_FUNIC_BIOMASS
FILE
IFR_IDEM_FUNIC_BIOMASS
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://sextant.ifremer.fr/services/wms/biologie IFR_IDEM_ISID_DENSITY
FILE
IFR_IDEM_ISID_DENSITY
- OnLine resource
-
Protocol Linkage Name OGC:WMS
https://sextant.ifremer.fr/services/wms/biologie IFR_IDEM_ISID_BIOMASS
FILE
IFR_IDEM_ISID_BIOMASS
- OnLine resource
-
Protocol Linkage Name WWW:LINK-1.0-http--metadata-URL
http://dx.doi.org/10.12770/27ad8f32-bd15-417c-b08d-064a713c9409 DOI of the dataset
- Hierarchy level
- Dataset
Conformance result
- Title
-
RÈGLEMENT (UE) N o 1089/2010 DE LA COMMISSION du 23 novembre 2010 portant modalités d'application de la directive 2007/2/CE du Parlement européen et du Conseil en ce qui concerne l'interopérabilité des séries et des services de données géographiques
- Date (Publication)
- 2010-12-08
- Explanation
-
See the referenced specification
- Statement
-
Bottom and beam trawling mostly targets fish and cephalopods while mega-zooplancton and most other benthic invertebrates are considered as by-catches of this fishing technique. The mesh size of bottom trawl, generally decreasing from opening to cod-end, and the ground gear used (usually only scratching the seabed surface) result in mostly mega-(>2cm) epifauna being captured. Although bottom trawl is seldom recognised as a valid sampling device for benthic invertebrate species, such observations are nonetheless believed to be particularly relevant as 1) they represent the benthic fauna fraction the most likely affected by bottom fishing 2) they integrate assemblages’ composition over large areas (1-4 km long and 3-20 m large) and are more representative of larger scale habitat structure and 3) they are particularly suited to collect over-dispersed or motile species.
IFREMER contributes to the collection of basic biological data in the french waters of the Mediterranean through its annual bottom trawl survey MEDITS (Mediterranean International Trawl Survey, carried out in June since 1994) and beam trawl survey NOURMED (Nourriceries Méditerranée, carried out in September since 2018) on board of the RV L'Europe.
For MEDITS, the sampling gears used an internationally standardised bottom trawl (GOC73), well adapted for catching demersal species (in particular fish and cephalopods), with a 10 mm mesh size at the cod-end for catching juveniles. The sampling strategy was using standard 30 or 60 minutes hauls (above and below 200m depth respectively) at 4 knots speed during daylight, evenly distributed over the whole study area. Demersal species and megafauna/epifauna caught in the bottom trawl were sorted, identified, counted and weighed (MEDITS, 2017). For NOURMED, the sampling gear was a standardised 3m beam trawl (CP3M), designed for catching benthic species (in particular flat fish and juveniles), with a 10 mm mesh size at the cod-end. The sampling strategy was using standard 15 minutes hauls at 2 knots speed during daylight, evenly distributed over the whole study area. Benthic species and megafauna/epifauna caught in the beam trawl were sorted, identified, counted and weighed (Vaz et al., 2019)
The present dataset focuses on vulnerable benthic invertebrates and is composed of one attribute table. It gives information about each operation (survey, date, location, gear type, swept area in km², horizontal opening in m, depth in m). Species catch were raised as total number or total weight (g) per km². When broken, species could not be counted and the value “1” was used to mark the presence of the species in the catch. Absence from the catch are reported as 0.
MEDITS (2017) MEDITS - International Bottom Trawl Survey in the Mediterranean : Instruction Manual Version 9.
Vaz Sandrine, Brind'Amour Anik, Delaunay Damien, Baudrier Jerome (2019). Rapport de campagne de nourriceries côtières : Campagne NOURMED 2018 . R.RBE / MARBEC-2019 . https://archimer.ifremer.fr/doc/00506/61742/
Metadata
- File identifier
- 27ad8f32-bd15-417c-b08d-064a713c9409
- Metadata language
- English
- Other language
-
Language Character encoding French UTF8
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2024-01-24T16:21:55.587Z
- Metadata standard name
-
ISO 19115:2003/19139 - SEXTANT
- Metadata standard version
-
1.0
- Metadata author
-
Organisation name Individual name Electronic mail address Role Ifremer
Vaz Sandrine
Author