Changes in marine ecosystems will also change in unexpected ways, research shows

Rutgers study finds that changes in marine ecosystems will change unexpected ways

Large predatory fish are thought to slow down after a change in temperature due to the activation of the food system. Yes: Gerald Schömbs

Warming oceans due to climate change will mean fewer species of fish to catch in the future, according to a new study by Rutgers found that warmer temperatures, the interaction of predator-prey prevents species from maintaining the conditions in which they can thrive.

The new study, published in the journal Proceedings of the Royal Society B, presents a complex picture of marine health. Not only do big men and serious fishermen move out of their historic territories when the weather warms up, but they may not feel like their new homelands. For example, a cod fishery in the Atlantic may have caught fish 200 years from now but in very small numbers.

“What the fishing scene shows is that while today’s species of fish will be there tomorrow, they won’t be there in the same amount. Writer Malin Pinsky, a fellow fish consultant at Rutgers Department of Ecology, Evolution, and Natural Resources. “Warming combined with food system dynamics is like integrating marine organisms into a company.”

Preliminary studies on the displacement of habitats have focused on the direct effect of climate change in various ways. While these “one -at -a -time” comparisons provide insight into what marine communities look like in a warmer world, they do not consider the impact that the food system will have on speed. of change.

The new study looked at trophic relationships – the process of one species being fed at the expense of another – and other food -network factors to determine how climate change levels. of types.

Using complex computer models, the researchers concluded that predator-prey attachment is the one that slows down a wide range of species, even more insane ones.

“The model shows that over the next 200 years of warming, species will continue to change their levels,” said lead author EW Tekwa. , a former Rutgers postdoc in ecology, evolution and natural resources currently at the University of British Columbia. “After 200 years, ocean conditions are still slowing down after climate change, and this is especially true for people on the food system.”

The climate is warming, millions of species are moving poleward to a new order of life on earth. However, our understanding of these practices does not pay much attention to one important aspect of life – the need for animals and other living things to eat. The researchers complemented this information by looking at the nature of the basic need for nurturing migratory species.

The researchers developed a “food-specific system” that includes factors such as metabolism, body size and optimal temperature levels. In calculating climate change, their model showed that trophic forces are involved in the ability to react rapidly at hot temperatures. They also found that big body thieves lived longer than small captives in historical places, because of the arrival of new food sources in their previous levels.

“These dynamics are not just in one place but all over the world,” Pinsky said. “That’s not good for marine life, and it’s not a well -known consequence.”


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More information:
The size of the body and the digestive system affect the changes in nutrients that result from warming. Proceedings of the Royal Society B: Biological Sciences (2022). DOI: 10.1098 / rspb.2021.2755. rspb.royalsocietypublishing.or .1098 / rspb.2021.2755

Presented by Rutgers University

Directions: Changes in marine ecosystems are changing in unexpected ways, as seen in studies (2022, April 12) downloaded April 12, 2022 from https://phys.org/news /2022-04-climate-reshuffle-marine-ecosystems-unexpected.html

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