West Coast Salmon Vulnerable to Climate Change, but Some Show Resilience to Shifting Environment

I think the language in the above post pretty much sums up what's wrong w the denier approach - and how that debate is carefully crafted by the anti PR machine.

"MY" experts verses "your" experts.

Climate scientists are not "my" nor "your" experts. They are simply experts in a field that we should listen to to provide background and data to make decisions on. It would be responsible to do so - and we normally do it for many industries & issues. The worst thing that could happen by responding to the global warming issue by developing alternative energy sources is that we develop a new industry w jobs and extend our oil supply before it runs out - which it will.

The pro do-nothing lobby headed by PR firms and front lobby groups funded by the Koch brothers and others who hire economists who generally are not experts in even their own field are certainly not "experts" in the climate field even though their blog says so. They prey on people's ignorance and superstition and lack of science literacy. GLG posted some good ways to differentiate what trustworthy & accountable science is - above.

I'd recommend increasing your science literacy including watching and absorbing the content above.

What's the irresponsible approach of doing nothing - we are experiencing that now - and it will get worse: fires, melting glaciers, species ranges shifting North, increased droughts and extreme weather - and increased costs in dealing with it. Doing nothing is irresponsible IMHO - and time to ignore the deniers altogether and do what is right.
 
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OldBlackDog said:
Bristol Bay sockeye harvest blowing away forecast once again.

https://www.alaskajournal.com/2019-...keye-harvest-blowing-away-forecast-once-again
Click to expand...

From the article:

Dead salmon have been reported floating in rivers in Norton Sound and in the Kuskokwim River. In Bristol Bay, warm water seems to be preventing salmon from moving upstream in at least one system: the Igushik River, a broad river on the western side of the Nushagak District.

Sands said many systems across Alaska have seen salmon kills due to heat, including the Nushagak, but the Igushik in particular is having large numbers of them because warm water is blocking salmon from moving upstream.
 
 
AGAIN - I think the narrative that has been developed by the Koch PR denier industry that somehow there is 2 competing teams and one will "win" is absurdly false - but thanks again for the example, ST.

In the science - there is overwhelming consensus on the causes and ultimately the impacts of our continued greenhouse gas emissions. There are no 2 teams here.

Secondly, we all live on the same planet - admittedly in different geographic areas with different impacts wrt climate chance. There are no 2 planet teams. We are in this together - for good or bad - along w all the other life forms on this planet.

This is not a sport - there are no teams.

Again, time to ignore the denier machinery...
 
and the mass extinctions have followed those peaks of CO2 that we are largely responsible for this time - ya no thanks for blindly & irresponsibly walking into that. Something serious to learn from the past cycles. That's the point.
 
State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats Technical Report:
http://www.dfo-mpo.gc.ca/species-es...tate-etat-2019/abstract-resume/index-eng.html

E-Book for State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats:
http://www.dfo-mpo.gc.ca/species-es...n-saumon/state-etat-2019/ebook/index-eng.html

ABSTRACT
Grant, S.C.H., MacDonald, B.L., and Winston, M.L. 2019. State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats. Can. Tech. Rep. Fish. Aquat. Sci. 3332. ix + 50 p.

At DFO’s first State of the Salmon meeting in 2018, scientists concluded that Canadian Pacific salmon and their ecosystems are already responding to climate change. Northeast Pacific Ocean warming trends and marine heatwaves like “The Blob” are affecting ocean food webs. British Columbia and Yukon air and water temperatures are increasing and precipitation patterns are changing, altering freshwater habitats. The effects of climate change in freshwater are compounded by natural and human-caused landscape change, which can lead to differences in hydrology, and increases in sediment loads and frequencies of landslides. These marine and freshwater ecosystem changes are impacting Pacific salmon at every stage of their life-cycle.

Some general patterns in Canadian Pacific salmon abundances are emerging, concurrent with climate and habitat changes. Chinook numbers are declining throughout their B.C.and Yukon range, and Sockeye and Coho numbers are declining, most notably at southern latitudes. Salmon that spend less time in freshwater, like Pink, Chum, river-type Sockeye, and ocean-type Chinook, are generally not exhibiting declines. These recent observations suggest that not all salmon are equally vulnerable to climate and habitat change.

Improving information on salmon vulnerability to changing climate and habitats will help ensure our fisheries management, salmon recovery, and habitat restoration actions are aligned to future salmon production and biodiversity. To accomplish this, we must integrate and develop new research across disciplines and organizations. One mechanism to improve integration of salmon-ecosystem science across organizations is the formation of a Pacific Salmon-Ecosystem Climate Consortium, which has been recently initiated by DFO’s State of the Salmon Program.
 
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“A new scientific truth does not triumph by convincing its opponents and making them see the light, but rather because its opponents eventually die, and a new generation grows up that is familiar with it.” - Max Planck

David H. Koch 1940 - 2019
Time to meet your maker and answer for your deeds.
 
GLG said:
...David H. Koch 1940 - 2019 Time to meet your maker and answer for your deeds.
Click to expand...
as usual - great post GLG.

I believe that David has become dark energy that is spinning our galaxy apart faster and faster verses dark matter that is keeping our galaxies from flying apart. Wish the Universe would stop expanding faster and faster....
 
agentaqua said:
State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats Technical Report:
http://www.dfo-mpo.gc.ca/species-es...tate-etat-2019/abstract-resume/index-eng.html

E-Book for State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats:
http://www.dfo-mpo.gc.ca/species-es...n-saumon/state-etat-2019/ebook/index-eng.html

ABSTRACT
Grant, S.C.H., MacDonald, B.L., and Winston, M.L. 2019. State of Canadian Pacific Salmon: Responses to Changing Climate and Habitats. Can. Tech. Rep. Fish. Aquat. Sci. 3332. ix + 50 p.

At DFO’s first State of the Salmon meeting in 2018, scientists concluded that Canadian Pacific salmon and their ecosystems are already responding to climate change. Northeast Pacific Ocean warming trends and marine heatwaves like “The Blob” are affecting ocean food webs. British Columbia and Yukon air and water temperatures are increasing and precipitation patterns are changing, altering freshwater habitats. The effects of climate change in freshwater are compounded by natural and human-caused landscape change, which can lead to differences in hydrology, and increases in sediment loads and frequencies of landslides. These marine and freshwater ecosystem changes are impacting Pacific salmon at every stage of their life-cycle.

Some general patterns in Canadian Pacific salmon abundances are emerging, concurrent with climate and habitat changes. Chinook numbers are declining throughout their B.C.and Yukon range, and Sockeye and Coho numbers are declining, most notably at southern latitudes. Salmon that spend less time in freshwater, like Pink, Chum, river-type Sockeye, and ocean-type Chinook, are generally not exhibiting declines. These recent observations suggest that not all salmon are equally vulnerable to climate and habitat change.

Improving information on salmon vulnerability to changing climate and habitats will help ensure our fisheries management, salmon recovery, and habitat restoration actions are aligned to future salmon production and biodiversity. To accomplish this, we must integrate and develop new research across disciplines and organizations. One mechanism to improve integration of salmon-ecosystem science across organizations is the formation of a Pacific Salmon-Ecosystem Climate Consortium, which has been recently initiated by DFO’s State of the Salmon Program.
Click to expand...
AA. Was it you who highlighted the scripture in red? I been continuously told by some that it is all about ocean conditions that have been the cause of declines???
 
I am guessing you are unfamiliar w multivariate stats (e.g. factor analysis, etc.)? Where you can apportion-out relative amounts that each factor explains the variability?
Ya - most species, most stocks, most years - esp. in the past 10-20 yrs - ya Ocean survival/mortality is the biggest kicker. Look it up. Lots science on that out there.
 
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Sockeye have been in declines for canada since the 1990's in canada. Ocean survival rates were really high in the early 1990's, they were above average. Now they have dropped to below average.

Its funny that experts point to ocean survival as the cause yet they also sate that pinks and chum that migrate straight to the ocean are doing better. Clearly freshwater is playing a key role too.
 
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