The associated data highlights the spatial influence of the dataset of the type “Visual Observations from an Aerial Platform” from the PELAGIS Observatory. These ranges represent the different areas of study on which the PELAGIS observatory conducted campaigns of visual observations from aerial platforms. Each area of study is associated with at least one campaign, with observers and geographical sectors linked to that campaign. Each sector is associated with bathymetric strips and transects related to each of the strips, with a few exceptions for the Indian Ocean region. Description of fields and values of the attribute tables : (- field name, meaning : value, description of values) - region, area of study specific to the PELAGIS observatory PELAGIS : OI/FRM/ AGFR/SOP/SP, region_lbl - programme, associated programme of which the campaign is a part: REMMOA/PACOMM, REcensement de la Mégafaune Marine par Observation Aérienne/Programme d'Acquisition sur les Oiseaux et Mammifères Marins - idCampagne, abbreviated name of the data collection campaign: OI/SAMM/ ANT/SOP/PF/GUY, Campagne Océan Indien/Suivi Aérien de la Mégafaune Marine/Sud Ouest Pacifique/Polynésie Française/ Guyane française - progress, current state of the campaigns, from collection to scientific optimisation : Preparation/Acquisition/ Analysis/Enhancement, campaign being prepared/under acquisition/being analysed/data enhanced within the context of a scientific publication.

OYSTERCOVER (http://oysterecover.eu/) : Establishing the scientific bases and technical procedures and standards to recover the European flat oyster production through strategies to tackle the main constraint, bonamiosis. The European flat oyster has been part of the human diet for many centuries. High mortality episodes and overfishing decimated the populations of O.edulis in Europe through the first half of the 20th century. Then, two diseases (due to Marteilia refrigens and Bonamia ostreae) spread in early 1970s and 1980s, drastically reducing the production. Despite the new management practices and intensive repletion programmes, the production of O. edulis has remained low since that time. The recovery of European flat oyster production could be an important opportunity for the shellfish industry in Europe.A total of five shellfish producers’ associations from four different Member States and three SMEs in major oyster production countries in Europe, concerned about the above mentioned issues and being aware of recent scientific progress in selective breeding programmes for bonamiosis tolerance, have decided to work together with the common general objective of facing the challenge of establishing the scientific and technical bases, procedures and standards that allow the recovery of the O. edulis production, through the development of strategies to tackle the main constraint, bonamiosis. To successfully achieve this goal those European research centres and universities which have mainly contributed to scientific progress on O. edulis recovery and selective breeding programmes for bonamiosis resistance, are hired by the SME-AGs and the SMEs involved in the project, to carry out the relevant research. This layer concern the map of the partners involved in OYSTERECOVER

Flights over France’s metropolitan waters and border areas to observe seabirds, marine mammals, other species of megafauna in open water and human activity (floating waste), with the aim of producing an inventory of spatial distribution and species abundance, and to evaluate spatial and temporal variability. This part, complemented by other work in the PACOMM programme, provides information which is collated and used for designating and managing protected marine areas to meet requirements for community conservation and promotion of marine areas (Natura 2000, MSFD, local and regional maritime conventions, etc.).

The observation of ecosystems by Ifremer's Fisheries Information System (SIH) is based on a network of sea cruises. It aims to assess the state of stocks of the various species fished in France and Europe. It also enables the characterisation of the marine ecosystem in which the populations evolve. 23 scientific cruises take place each year at sea, enabling data to be collected for more than 30 years for the oldest. Thanks to the use of standardised fishing gear, the data acquired each year on board scientific vessels or professional fishing vessels contribute to the calculation of the index of abundance, with thousands of fish taken during timed trawls. The fish are measured and their age is assessed by measuring their otoliths (small bones located in the inner ear of the fish).

The two core objectives of BIVALIFE are : - to provide innovative knowledge related to pathogens infecting oysters and mussels and - to develop practical approaches for the control of infectious diseases and resulting mortality outbreaks these pathogens induce. This layer concerns the sampling sites.

DATRAS North Sea Bottom Trawl Survey

The observation of catches at sea, whether landed or discarded by professional fishing vessels, provides a better understanding of the interactions between fishing activity, resources and marine ecosystems. This system, called ObsMer, is applied in metropolitan France, excluding Corsica.

The dataset includes age- and length-based catch per unit effort data for commercial fish species collected by the French trawl survey EVHOE.

The repository of commercially exploited species of interest in the Fisheries Information System is based on the FAO's ASFIS repository enriched with species of high commercial interest in France (metropolitan and overseas).

Species distribution models (GAM, Maxent and Random Forest ensemble) predicting the distribution of discrete Lophelia pertusa - Desmophylum pertusum colonies assemblage in the Celtic Sea. This community is considered ecologically coherent according to the cluster analysis conducted by Parry et al. (2015) on image samples. Modelling its distribution complements existing work on their definition and offers a representation of the extent of the areas of the North East Atlantic where they can occur based on the best available knowledge. This work was performed at the University of Plymouth in 2021.