Articles on Marine biodiversity

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In the last two decades, as a result of climate-driven sea warming, almost half of commercially relevant fish in the Mediterranean have been deserting their original habitats in their quest for higher latitudes, depths and cooler waters. KinoMasterskaya / Shutterstock

What fish redistribution in the Mediterranean is telling us about species’ climate resilience

The Mediterranean is one of the world’s most vulnerable ecosystems. A scientific study on shifting distribution dynamics examines how its fish species contend with sea warming.
Mike Allen discusses the merits of seaweed with The Conversation’s Anna Turns in a new series, Secrets of the Sea. Jo Loosemoore

How seaweed is a powerful, yet surprising, climate solution

A chance encounter on a rocky seashore led one professor to invent autonomous robotics that can harvest the power of seaweed.
Lake Cromwell at the Station de biologie des Laurentides of the Université de Montréal, where many of our studies are carried out on parasitized fish. (Ariane Côté)

Our lakes are teeming with parasites. Why that’s good…and bad

Many wild fish in Québec have parasites. Is this necessarily a bad thing? How can we limit the proliferation and spread of specific harmful parasites?
Pok Rie/Pexel

Governments spend US$22 billion a year helping the fishing industry empty our oceans. This injustice must end

Governments all over the world are propping up overfishing. Now scientists have penned an open letter calling on trade ministers to implement stricter regulations against harmful fisheries subsidies.
At a depth of more than 60 metres, the gorgonians are healthy, colourful and in good condition, protected from the rise in temperature. Alexis Rosenfeld/Unesco

The deep Mediterraneen: a temporary refuge for gorgonian coral forests facing marine heat waves

In the Mediterranean, heat waves are decimating underwater forests that are essential to ecosystems. The gorgonians seem to be better able to resist in the depths, but this refuge may only be temporary.
Matteo Collina

Using photos to create 3D models is helping us understand – and protect – complex marine environments

Photogrammetry, a technique where 3D information is extracted from photographs, is reducing the guesswork in counting – and understanding – the world below the ocean surface.
A school of grunts on a sunken World War II German submarine in the Atlantic Ocean off North Carolina. Karen Doody/Stocktrek Images via Getty Images

Shipwrecks teem with underwater life, from microbes to sharks

When ships sink, they add artificial structures to the seafloor that can quickly become diverse, ecologically important underwater communities.
The industrialization of the fishing industry and changes in the environment have raised many issues about the management of our fisheries. (Fanny Fronton)

Gulf of St. Lawrence: Analyzing fish blood can show us how healthy they are

Blood isn’t sterile, and analyzing the bacteria in it could help assess the health of fish and prevent the collapse of their populations.

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