• Catalogue PIGMA
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Delayed response to environmental conditions and infra-seasonal dynamics of the short-beaked common dolphin distribution

Cetaceans adjust their distribution and abundance to encountered conditions across years and seasons, but we poorly understand such small-scale changes for many species, especially in winter. Crucial challenges yet weight on some populations during this season, such as the high levels of fisheries-induced mortality faced by the common dolphin (Delphinus delphis) in the North-East Atlantic shelves. For such species, comprehend the winter fine-scale dynamics is crucial. We aimed at identifying the dolphin distribution drivers within the winters 2020 and 2021, with a focus on determining the lag between changes in oceanographic conditions and in dolphin distribution. They were related with temporal delays specific to the nature and the cascading effects oceanographic processes had on the trophic chain. By determining the most important conditions and lags to dolphin distributions, we shed light on the yet poorly understood intrusions of dolphins within coastal waters during winter: they displayed a strong preference for the coastal-shelf waters front and extensively followed its spatial variations, their overall densities increasing over the period and peaking in March-April. The results presented here provided invaluable information on the winter distribution dynamics and should inform management decisions to help reducing the unsustainable mortalities of this species in fisheries by-catch.

Simple

Date (Publication)
2022
Date (Revision)
2024-01-02
Other citation details

Lambert Charlotte, Authier Matthieu, Blanchard Ariane, Dorémus Ghislain, Laran Sophie, Van Canneyt Olivier, Spitz Jérôme (2022). Delayed response to environmental conditions and infra-seasonal dynamics of the short-beaked common dolphin distribution. SEANOE. https://doi.org/10.17882/86805

In addition to properly cite this dataset, it would be appreciated that the following work(s) be cited too, when using this dataset in a publication :

Lambert C., Authier M., Blanchard A., Dorémus G., Laran S., Van Canneyt O., Spitz J. (2022). Delayed response to environmental conditions and infra-seasonal dynamics of the short-beaked common dolphin distribution. Royal Society Open Science, 9(11). https://doi.org/10.1098/rsos.220379

Credit
This work was funded by the Office Français de la Biodiversité - Parc naturel marin de l'estuaire de la Gironde et de la mer des Pertuis (Gironde Estuary and Pertuis Sea Marine Nature Park; https://plan-gestion.parc-marin-gironde-pertuis.fr/) and the Région Nouvelle Aquitaine (contract AFB/2018/369 and contract OFB/20/0634), with support from the French Ministry in charge of the Environment.
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France CNRS - La Rochelle Université, UMR 7372, Centre d’Etudes Biologiques de Chizé, F-79360 Villiers-en-bois, France - Lambert Charlotte
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France - Authier Matthieu
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France - Blanchard Ariane
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France - Dorémus Ghislain
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France - Laran Sophie
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France - Van Canneyt Olivier
Author
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France CNRS - La Rochelle Université, UMR 7372, Centre d’Etudes Biologiques de Chizé, F-79360 Villiers-en-bois, France - Spitz Jérôme
Publisher
  SEANOE
Theme
  • Common dolphins
  • Bay of Biscay
  • Winter
  • Simulation
  • Temporal lag
  • Dynamic species distribution modelling
  • Biological oceanography
ODATIS aggregation parameters and Essential Variable names
  • Marine turtles, birds, mammals
SeaDataNet Parameter Disciplines
  • Biological oceanography
Type de jeux de donnée ODATIS
  • /Observational data/in-situ
Use limitation
CC-BY-NC-SA (Creative Commons - Attribution, No commercial usage, Sharing under the same conditions)
Use constraints
Other restrictions
Other constraints
This work is based on three aerial surveys conducted in the Bay of Biscay in the winters 2020 and 2021: SPEE, CAPECET and SAMM II surveys, conducted by Observatoire Pelagis UAR 3462 CNRS-LRUniv.
Date (Publication)
2022
Publisher
  The Royal Society
Author
  Lambert C.
Author
  Authier M.
Author
  Blanchard A.
Author
  Dorémus G.
Author
  Laran S.
Author
  Van Canneyt O.
Author
  Spitz J.
Unique resource identifier
10.1098/rsos.220379
Association Type
Cross reference
Initiative Type
Study
Metadata language
English
Topic category
  • Oceans
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Begin date
2020-01-01
End date
2021-04-15
Distribution format
  • ZIP ARCHIVE ( )

OnLine resource
Processed data ( WWW:DOWNLOAD-1.0-link--download )

Archive file containing data and codes for the analyses described in Lambert et al. 2022 RSOS - 158 MB

OnLine resource
DOI of the product ( WWW:LINK-1.0-http--metadata-URL )
OnLine resource
Seanoe ( rel-canonical )
Hierarchy level
Dataset
Statement

Archive of analysis code used in Lambert et al. 2022 Delayed response to environmental conditions and infra-seasonal dynamics of the short-beaked common dolphin distribution, RSOS.

This repository contains all data and codes necessary to replicate the analyses and results presented in the paper. It is organised as follows:

- functions: the folder contains all the functions necessary for running the R scripts.

- data:  Map files: land and isobath files used in the codes Surveys files: there is two files for each surveys, one for the effort (5km-long segments) and one for the observations Variables: raster stacks of all environmental conditions considered and used in the analyses.

- scripts : the folder contains the nine scripts to run all the analyses described in the paper. Titles are self-explanatory.

- scripts results: this folder is empty for now, but is to be populated when running the codes.

File identifier
seanoe:86805 XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2024-01-02
Metadata standard name
ISO 19115:2003/19139
Metadata standard version
1.0
Point of contact
  CNRS - La Rochelle Université, UAR 3462, Observatoire Pelagis, F-17000 La Rochelle, France CNRS - La Rochelle Université, UMR 7372, Centre d’Etudes Biologiques de Chizé, F-79360 Villiers-en-bois, France - Lambert Charlotte
 
 

Overviews

overview
Common dolphin in the Bay of Biscay

Spatial extent

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E
W
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Keywords

Bay of Biscay Biological oceanography Common dolphins Dynamic species distribution modelling Simulation Temporal lag Winter
ODATIS aggregation parameters and Essential Variable names
Marine turtles, birds, mammals
Type de jeux de donnée ODATIS
/Observational data/in-situ

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