The page you are looking for is temporarily unavailable.
Please try again later

Technology For fish, the good and bad of warming ocean waters

21:48  19 june  2017
21:48  19 june  2017 Source:   pri.org

193 nations urge action to protect oceans _ with US protest

  193 nations urge action to protect oceans _ with US protest The 193 U.N. member nations issued an urgent call for action Friday to reverse the decline in the health and productivity of the world's oceans — with the United States backing the action plan but rejecting its support for the Paris agreement to tackle climate change. (AP Photo/Gemunu Amarasinghe, File) UNITED NATIONS — The 193 U.N.

As ocean temperatures rise, what will happen to the fish we eat? Other factors like ocean acidification could change the game for lobsters, for example, which otherwise stand to gain from warming waters .

Good Animals June 19, 2017 June 19, 2017. As ocean temperatures increase, what will occur to the fish we eat? Other elements like ocean acidification could change the video game for lobsters, for example, which or else stand to obtain from warming waters .

  For fish, the good and bad of warming ocean waters © Maritime Aquarium at Norwalk/CC BY-ND 2.0.

As ocean temperatures rise, what will happen to the fish we eat?

According to a recent study published in “Progress in Oceanography,” some fish species will thrive in warmer waters — and others, not so much.

Using a detailed climate model and historical observation data, researchers at NOAA and The Nature Conservancy modeled the shifting thermal habitats of over 50 species along the Atlantic coast, from North Carolina to the Gulf of Maine.

“So it’s basically a picture of the water temperature and the depths that individual species are most commonly associated with,” says lead author Kristin Kleisner, now a senior scientist at the Environmental Defense Fund’s Fisheries Solutions Center.

'Plankton explosion' turns Istanbul's Bosphorus turquoise

  'Plankton explosion' turns Istanbul's Bosphorus turquoise A sudden change in the colour of the Bosphorus Strait that divides the continents of Europe and Asia in Turkey's largest city Istanbul has surprised residents, with scientists putting it down to a surge in a species of plankton across the Black Sea. The sudden transformation of the usually blue waters of the Bosphorus to a milky turquoise since the weekend had alarmed some residents.Some took to social media to express fears that there had been a pollution spill while others even suggested it could be linked to an earthquake that rocked the Aegean region on Monday afternoon.

A new study predicts that in the new normal, some fish will win and some fish will lose.

Scientists knew that climate change would eventually impact fisheries , but new research indicates that warming water is already affecting the kinds of fish that end up on your dinner Scientists aren’t clear about what effect climate change, including the warming of the oceans , will have on wild fisheries .

Ocean temperatures in the region are expected to increase 6.6 to 9 degrees Fahrenheit (3.7 to 5.0 degrees Celsius) by the end of the century, according to NOAA. For many species, like summer flounder, striped bass and Atlantic croaker, researchers found warming oceans could lead to increased habitat availability.

“Those are all species that are currently caught off the more southern portions of our coastline and they’re associated with warmer waters,” Kleisner says. “And these guys might do pretty well as climate changes and new areas of suitable thermal habitat open up for them.”

Kleisner is careful to point out that the study only considered water temperature and depth in its picture of thermal habitats. Other factors like ocean acidification could change the game for lobsters, for example, which otherwise stand to gain from warming waters. “That could be a pretty big wild card,” she says.

Mysterious, 2-headed sea creature stuns researchers

  Mysterious, 2-headed sea creature stuns researchers Crew of fishermen hauled in creature never before seen by the human eye, and its discovery has science world buzzingThe rare creature turned out to be a set of conjoined newborn twins that shared a single body.

IRA FLATOW: Now it’s time to play “ Good Thing, Bad Thing”–. [MUSIC PLAYING]. Because every story has a flip side. The globe continues to warm and with it, the oceans . How will the warmer waters affect the fish we eat?

True high tide and low tide are probably the worst times to fish . When the water level reaches high or low Although nearly all ocean fishing is best done during a period of falling or rising tides, consider where you'll fish and When you get a warm winter, though, good fishing is found along bay flats.

Meanwhile, for species like Atlantic cod, Acadian redfish and others found in northern coastal areas, the study’s picture “was not so rosy,” Kleisner says. That’s not to say these species won’t find suitable water temperatures in deeper waters, or further north, she adds — but their habitats may shift out of reach for some fishermen.

For those fishermen whose target species move elsewhere, “they’re looking at traveling potentially quite a distance from their home ports — maybe spending more fuel to catch the species they’ve traditionally fished,” Kleisner says. “But there’s going to be new species showing up off of our coast, and that could present some new opportunities.”

And even with new species moving into the region, Kleisner suggests, we may need to adjust the way we fish.

“I think anglers and fishers are going to need to be able to make modifications to their gear, maybe, to catch these new species,” she says, “or also have the ability to obtain quotas or permits to be able to go and fish these species.”

This article is based on an interview that aired on PRI's Science Friday.

Crabs native to Pacific waters caught off Connecticut coast .
Experts at a Connecticut aquarium are trying to figure out how crabs native to the Pacific Northwest ended up in the waters of Long Island Sound. The Hour newspaper reports that oyster fishermen hauled up four unusual crabs off the coast of Norwalk last week, threw three back but brought one to the Maritime Aquarium in the city.Aquarium experts identified the 2½ -pound crustacean as a male Dungeness crab.Senior aquarist Sandi Schaefer-Padgett said the discovery is "not normal" and scientists are now trying to figure out how they ended up off Connecticut's coast.

—   Share news in the SOC. Networks

Topical videos:

This is interesting!