Search results for aquatic ecology

Evolution Apr 16, 2025

Ancestors of today's crocodilians survived two mass extinction events: Study uncovers secret to their longevity

Most people think of crocodilians as living fossils—stubbornly unchanged, prehistoric relics that have ruled the world's swampiest corners for millions of years. But their evolutionary history tells a different story, according ...

Plants & Animals Apr 10, 2025

Who eats whom? New model for marine food webs calculates predator-prey relationships more precisely

Marine food webs are highly complex. Until now, researchers have been unable to understand exactly how they are affected by climate change, overfishing and other threats. Scientists at the Helmholtz-Zentrum Hereon in Geesthacht ...

Environment Apr 10, 2025

Penguin feathers reveal mercury contamination in remote Southern Ocean

In 1962, when environmentalist and author Rachel Carson penned "Silent Spring," alerting the world to the dangers of the pesticide DDT, it was the reproductive threat to birds—the bald eagle in particular—that spurred people ...

Evolution Apr 3, 2025

Study reveals that migrating roach fish have sharper eyesight

Roach fish that migrate between different lakes and water courses have larger pupils and better eyesight than roach that stay in one place. The adaptation makes it easier for the red-eyed freshwater migrants to find food ...

Environment Apr 1, 2025

A classification of drugs based on their environmental impact

Scientists at the University of Lausanne (UNIL) and University center Unisanté classified 35 commonly used drugs in Switzerland based on their impact on the aquatic biodiversity. The aim of this research is to provide medical ...

Ecology Mar 27, 2025

By 2100, more than 80% of amphibian species in and around the Pantanal in Paraguay projected to lose suitable habitat

A study published in the Journal of Applied Ecology shows that the Upper Paraguay River Basin, which includes the Pantanal and its surroundings, could lose almost all of the areas suitable for anuran amphibians (toads, frogs ...

Environment Mar 26, 2025

Global species loss: Biodiversity study highlights the devastating human impact

Humans are having a highly detrimental impact on biodiversity worldwide. Not only is the number of species declining, but the composition of species communities is also changing. These are the findings of a study by Eawag ...

Ecology Mar 11, 2025

Study explores effects of climatic changes on Christmas Island's red crabs

The annual migration of Christmas Island's red crabs—where millions of creatures cover its beaches as they make their way from land to sea—is a true natural spectacle.

Plants & Animals Mar 9, 2025

Megalodon's body size and form uncover why certain aquatic vertebrates can achieve gigantism

A new study provides many new insights into the biology of the prehistoric gigantic shark megalodon (megatooth shark), which lived nearly worldwide 15–3.6 million years ago. Paleobiology professor Kenshu Shimada of DePaul ...

Ecology Feb 19, 2025

Urban environments promote adaptation to multiple stressors in aquatic species

Urban habitats are very different from natural habitats and pose new challenges for animals and plants. Until now, little was known about how populations of the same species evolve in habitats with and without human influence.

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