Confinement and biodiversity?

Blog 1 : Confinment & biodiversity: Some people's misfortune makes others happy?

The year 2020 is special: the Covid-19 crisis generated a two-month confinement period in the spring, which led to a halt in human activities. Consequently, the intuitions of a return of a more abundant biodiversity near the coasts are felt. Laurent Ballesta and the Andromède Océanologie team then decided to measure the potential impact of the cessation of human activities on underwater biodiversity. This mission started very early at the beginning of confinement and lasted until the end of the summer. The Andromède Océanologie team used innovative techniques such as environmental DNA and bioacoustics to obtain indicators whose values can be compared to those collected during previous missions.

Blog 2 : Wild Encounters: When Fish Make Nests

During the mission to measure the impact of the cessation of human activities on underwater biodiversity, Andromède Oceanologie team observed an incredible phenomenon: fields of picarel nests….

Blog 3 : Miraculous catches: The return of the fish?

The first witnesses to the effect of stopping human activities at sea during the confinment are the fishermen. Have they more or less fished? Meeting with Gérard Carrodano, professional fisherman specializing in fishing for live fish and invertebrates for aquariums and museums in Europe.

Blog 4 : Cartography of Posidonia meadows: The disaster of the anchors of large boats

It took more than ten years for Andromède Océanologie to map the French Mediterranean. However, some areas were still not covered due to the presence of large vessels preventing the passage of side sonar. With the cessation of human activities during the confinement, these underwater maps were refined.

Blog 5 : Environmental DNA and bioacoustics: Observing without seeing…

In the future, will we be able to get an idea of the state of health of an underwater ecosystem without carrying out long diving campaigns? This is the ambition of modern techniques of environmental DNA and bioacoustics.

Blog 6 : Wild Encounter: The Angel of the Mediterranean Sea

Meeting with an almost forgotten underwater creature, which nevertheless gave its name to a famous bay, the Baie des Anges, between Cap d'Antibes and Cap de Nice. This is the Mediterranean Sea Angel Shark, a stingray-like shark with amazing patterns on the back. This animal has now officially disappeared from the French mainland coasts but has taken refuge in Corsica ...

Blog 7 : Deep seaweed forests: Mediterranean kelp

Laurent Ballesta and his team went to a very special site, where a rocky bench several kilometers long culminates at 80 meters deep. Beaten by the currents, this site brings together the perfect conditions to welcome an ecosystem rare in the Mediterranean: a kelp forest.

Blog 8 : WWF's missions: Can we reconcile maritime traffic and marine mammals?

Laurent Ballesta left Zembra and the Andromède Océanologie team to join the Blue Panda and the WWF team, led by Denis Ody. For almost 20 years, he has been passionate about the large mammals of the Mediterranean which are concentrated in the Ligurian Sea. The study ultimately consists of carrying out a project to reconcile maritime traffic and large marine mammals in the Pelagos sanctuary.

Blog 9 : WWF's missions: Observe very discreet giants

Still aboard the Blue Panda, Laurent Ballesta helps the WWF team spot the whales. Although these mammals are larger than some dinosaurs, they remain extremely discreet. However, for years, Denis Ody and his crew have been using different techniques to identify crossed giants barely touching the surface.

Blog 10 : Cohabitation: The tragic fate of Flucker

We take a look back at the tragic fate of Flucker, a whale directly impacted by the increase in maritime traffic in the Mediterranean.

Blog 11 : End of mission: Discoveries and perspectives

The Andromède Océanologie team is in Cap Corse and has carried out its deepest and longest dive of the mission: - 115 meters, 5h30 of immersion. Long hours of ascent for only 28 minutes spent at the bottom to illustrate a strange phenomenon: large circular formations, still unexplained.