warm waters reduce fish populations:science

evince

evince

Truthmatters
http://abcnews.go.com/Technology/wi...-west-coast-lingering-effects-salmon-49910264



The mass of warm water known as "the blob" that heated up the North Pacific Ocean has dissipated, but scientists are still seeing the lingering effects of those unusually warm sea surface temperatures on Pacific Northwest salmon and steelhead.
Federal research surveys this summer caught among the lowest numbers of juvenile coho and Chinook salmon in 20 years, suggesting that many fish did not survive their first months at sea. Scientists warn that salmon fisheries may face hard times in the next few years.
Fisheries managers also worry about below average runs of steelhead returning to the Columbia River now. Returns of adult steelhead that went to sea as juveniles a year ago so far rank among the lowest in 50 years.
Scientists believe poor ocean conditions are likely to blame: Cold-water salmon and steelhead are confronting an ocean ecosystem that has been shaken up in recent years.
"The blob's fairly well dissipated and gone. But all these indirect effects that it facilitated are still there," Brian Burke, a research fisheries biologist with the Northwest Fisheries Science Center.
 
evince said:
http://abcnews.go.com/Technology/wi...-west-coast-lingering-effects-salmon-49910264



The mass of warm water known as "the blob" that heated up the North Pacific Ocean has dissipated, but scientists are still seeing the lingering effects of those unusually warm sea surface temperatures on Pacific Northwest salmon and steelhead.
Federal research surveys this summer caught among the lowest numbers of juvenile coho and Chinook salmon in 20 years, suggesting that many fish did not survive their first months at sea. Scientists warn that salmon fisheries may face hard times in the next few years.
Fisheries managers also worry about below average runs of steelhead returning to the Columbia River now. Returns of adult steelhead that went to sea as juveniles a year ago so far rank among the lowest in 50 years.
Scientists believe poor ocean conditions are likely to blame: Cold-water salmon and steelhead are confronting an ocean ecosystem that has been shaken up in recent years.
"The blob's fairly well dissipated and gone. But all these indirect effects that it facilitated are still there," Brian Burke, a research fisheries biologist with the Northwest Fisheries Science Center.
Click to expand...

Not for warm water species.........................

Sheesh

PS. Got news for you DORK, when glaciers melt they introduce COLD WATER into the oceans.

You always been stupid or did you study
 
evince said:
link fucktard
Click to expand...

Look kid there you go again asserting that links on the internet equal truth...............

Take your medicine.

PS. Do you really need a link that glacial melt is just above freezing?

Yea you are pretty stupid because you believe the internet
 
http://www.denverpost.com/2007/07/28/warm-waters-deadly-to-yellowstone-trout/




Artist Hank Wool, who also creates handmade bamboo fly rods and is an avid angler, has lived each summer in the Yellowstone entry town of Cooke City, Mont. He says this summer is the hottest of the 15 he and his wife have spent at their cabin.
By Rich Tosches | The Denver Post
PUBLISHED: July 28, 2007 at 1:28 pm | UPDATED: May 7, 2016 at 5:39 pm

Yellowstone National Park – The sun was straight overhead, blazing in the blue sky. On the ground, the temperature cruised past 90 degrees, mercilessly baking the meadows and great pine forests of America’s oldest national park.
In the Firehole River that slashes through the wild grasses and woods of Yellowstone’s west side, the trout began to take notice. As the water warmed on that early July day, the levels of dissolved oxygen dropped. The fish – rainbows, with their bright crimson lateral slash, and brown trout, with their multicolored spots – began to panic.
They darted up and down the river, seeking a cooling pocket.
ADVERTISING

Within 48 hours, rangers and biologists would stand amid the tall grasses on the banks of one of the nation’s most famous trout streams and watch in sadness as several hundred – and perhaps 1,000 – big and small trout were swept downstream, the white bellies of their corpses reflecting the sunlight.
It was the largest fish kill known to biologists in the 135-year history of the park.
The warming of typically cold-water rivers is not unique to Yellowstone. Montana, Idaho, Wyoming and Colorado are all caught in the throes of the heat and the drought. Colorado’s Yampa River near Steamboat Springs has warmed to dangerous levels. Anglers are advised not to fish in the Yampa during the afternoon.
“Most climate-change models, well, all of them, show that the climate will continue to get hotter and drier,” said Steve Gunderson, director of the Colorado department of health’s water quality division.
“That’s a bad thing for fish, especially in the cold-water streams. I think it’s a very real possibility that fish kills like the one in Yellowstone will become more widespread. It seems like the climate changes are becoming pretty dramatic.”
 
TheDonald said:
Look kid there you go again asserting that links on the internet equal truth...............

Take your medicine.

PS. Do you really need a link that glacial melt is just above freezing?

Yea you are pretty stupid because you believe the internet
Click to expand...

posts from internets sociopaths like you are meaningless


provide a reliable source link shit for brains
 
evince said:
that proves nothing you claimed shit miner
Click to expand...

Nothing you posted proved anything either....................

Acidity Effects on Baby Trout:

Left - normal - pH 5.5

Top Right - pH 5.0
growth is distorted

Bottom Right - pH 4.6
growth is unrecognizable

As you can see the pH range for having healthy trout is very narrow, with a one pH unit change in pH spelling the difference between disaster. Because the pH scale is logarithmic, a change from pH 5.5 to 4.5 represents a 10 times increase in acidity.

The increase in acidity with the spring snow melt may make a huge difference in the survivability of the aquatic life.

PS. The above are scientific measurements, you posted krap

Next
 
Federal research surveys this summer caught among the lowest numbers of juvenile coho and Chinook salmon in 20 years,
 
evince said:
It was the largest fish kill known to biologists in the 135-year history of the park
Click to expand...

LOL, so all you are referencing is one park not a global situation.....................Texas had 90 percent of it's small lakes dry up in the last ten years, 100 percent of the fish died...................Then Harvey came and dopey people who moved to a Texas desert have no gripes to make
 
evince said:
http://www.denverpost.com/2007/07/28/warm-waters-deadly-to-yellowstone-trout/




Artist Hank Wool, who also creates handmade bamboo fly rods and is an avid angler, has lived each summer in the Yellowstone entry town of Cooke City, Mont. He says this summer is the hottest of the 15 he and his wife have spent at their cabin.
By Rich Tosches | The Denver Post
PUBLISHED: July 28, 2007 at 1:28 pm | UPDATED: May 7, 2016 at 5:39 pm

Yellowstone National Park – The sun was straight overhead, blazing in the blue sky. On the ground, the temperature cruised past 90 degrees, mercilessly baking the meadows and great pine forests of America’s oldest national park.
In the Firehole River that slashes through the wild grasses and woods of Yellowstone’s west side, the trout began to take notice. As the water warmed on that early July day, the levels of dissolved oxygen dropped. The fish – rainbows, with their bright crimson lateral slash, and brown trout, with their multicolored spots – began to panic.
They darted up and down the river, seeking a cooling pocket.
ADVERTISING

Within 48 hours, rangers and biologists would stand amid the tall grasses on the banks of one of the nation’s most famous trout streams and watch in sadness as several hundred – and perhaps 1,000 – big and small trout were swept downstream, the white bellies of their corpses reflecting the sunlight.
It was the largest fish kill known to biologists in the 135-year history of the park.
The warming of typically cold-water rivers is not unique to Yellowstone. Montana, Idaho, Wyoming and Colorado are all caught in the throes of the heat and the drought. Colorado’s Yampa River near Steamboat Springs has warmed to dangerous levels. Anglers are advised not to fish in the Yampa during the afternoon.
“Most climate-change models, well, all of them, show that the climate will continue to get hotter and drier,” said Steve Gunderson, director of the Colorado department of health’s water quality division.
“That’s a bad thing for fish, especially in the cold-water streams. I think it’s a very real possibility that fish kills like the one in Yellowstone will become more widespread. It seems like the climate changes are becoming pretty dramatic.”
Click to expand...

post 10
 
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