Resident orcas' appetite likely reason for decline of big Chinook salmon
Killer whales prefer to eat only the biggest, juiciest Chinook salmon they can find. The larger the fish, the more energy a whale can get for its meal.
Killer whales prefer to eat only the biggest, juiciest Chinook salmon they can find. The larger the fish, the more energy a whale can get for its meal.
Ecology
Dec 16, 2019
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235
Bald Eagles and dairy farmers exist in a mutually beneficial relationship in parts of northwestern Washington State. According to a new study, this "win-win" relationship has been a more recent development, driven by the ...
Ecology
Mar 14, 2023
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16
Animals that live in groups tend to be more protected from predators. That idea might be common sense, but it's difficult to test for some species, especially for wild populations of fish that live in the ocean.
Ecology
Jun 29, 2022
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43
In drought years and when marine heat waves warm the Pacific Ocean, late-migrating juvenile spring-run Chinook salmon of California's Central Valley are the ultimate survivors. They are among the few salmon that survive in ...
Plants & Animals
Nov 1, 2021
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140
The size of salmon returning to rivers in Alaska has declined dramatically over the past 60 years because they are spending fewer years at sea, according to a new study led by researchers at the University of California, ...
Ecology
Aug 19, 2020
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1631
An ample buffet of freshwater food, brought on by climate change, is altering the life history of one of the world's most important salmon species.
Ecology
Jun 4, 2019
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277
Scientists have published a novel method for counting Pacific salmon—analyzing DNA from the slime the fish leave behind in their spawning streams.
Ecology
Jan 3, 2019
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216
New technologies for analyzing DNA may transform how imperiled species are considered and managed for conservation protection, according to a study published today in the journal Science Advances and led by the University ...
Ecology
Aug 16, 2017
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13
The biodiversity of two Northern Pacific salmon species may be at risk due to changes in ocean conditions at the equator, reports a study by the University of California, Davis.
Ecology
Aug 3, 2015
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101
Pink salmon that begin life in freshwater with high concentrations of carbon dioxide, which causes acidification, are smaller and may be less likely to survive, according to a new study from UBC.
Ecology
Jun 29, 2015
0
273