Anticipated salmon run could overwhelm Fraser River this summer, experts say

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Anticipated salmon run could overwhelm Fraser River this summer, experts say
MARK HUME
VANCOUVER — The Globe and Mail
Published Wednesday, Mar. 05 2014, 6:21 PM EST
Last updated Wednesday, Mar. 05 2014, 6:25 PM EST
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If the early signals are correct, the Fraser River could have the biggest salmon run in B.C. history this summer, with up to 72 million sockeye returning.
That would be more than double the record number that came back in 2010, when about 30 million sockeye flooded into the Fraser, overwhelming fish plants with such bounty they ran out of ice and storage boxes.
“I mean, it’s hard to fathom,” Rollie Rose, president of Sooke Salmon Charters Ltd., said in an interview of the magnitude of the projections from the Department of Fisheries and Oceans.
He told colleagues in a recent e-mail: “The news could not be any better … you will see fishing this year better than you have seen in your lifetime.”
Good ocean conditions for salmon in the past two years have resulted in forecasts of big runs all along the West Coast, extending into the United States, where officials recently predicted three million Chinook and coho for the Columbia River.
But the Fraser is expected to get the biggest return because the sockeye coming back are the progeny of the 2010 run, which was the largest in nearly 100 years.
Les Jantz, DFO’s acting area director for the B.C. Interior, said it is too early to say with certainty just how many sockeye will return. The forecast ranges from a low of 7.3 million to a high of 72.5 million.
If it is at the high end, he said, it will top anything seen in the Fraser “as long as we’ve been keeping records.”
Even at a conservative mid-range estimate of 23 million sockeye, it would be a prodigious run in a river where stocks have declined dramatically for nearly two decades, with runs of two to four million common. The run hit a low of 1.3 million in 2009 before bouncing back unexpectedly the next year in what many thought was a “one off” event.
In 2010, DFO saw signs of a good year and predicted four million to 29 million sockeye would return. As the season advanced, managers realized the high end would be reached.
A similar scenario may unfold this year, as fisheries managers begin to get hard data from sports anglers and commercial fishermen during early openings. By July, the numbers should be firm.
But Mr. Jantz said even at this early date, there is reason for excitement, because ocean conditions have been very good for salmon for the past three years, and a record number of young sockeye migrated out of the Fraser in the spring of 2012. Those fish would have encountered prime conditions, with upwellings of cold water that salmon prefer and are rich with the zooplankton and phytoplankton blooms young fish eat.
“We’re always cautious. That’s built into our system,” he said. “But it’s certainly looking good .”
Wilf Luedke, DFO’s chief of stock assessment on the south coast, said the Fraser is not the only watershed that is looking good.
Mr. Luedke said there are indications of strong chinook and coho runs to several rivers, and a big sockeye run is expected to the Somas River on Vancouver Island.
Like Mr. Jantz, he credited ocean conditions.
“That’s not the only factor, but it’s the biggest one,” he said.
He also noted that last year, large numbers of jack coho, chinook and sockeye returned to rivers. Jacks are immature fish that come back a year early. When a lot of them return, it usually signals a big run of mature fish will follow.
Mr. Luedke cautioned the forecast will not be certain until “ the hooks and nets hit the water.”
Ernie Crey, fisheries adviser to the Sto:lo Tribal Council, said the forecast numbers are amazing.
“I think sockeye will be a banner year,” he said.
But Mr. Crey urged DFO not to allow too much fishing before the actual size of the run is known.
“I say yes, be excited, and it’s wonderful we’re looking at this tremendous year in front of us. But I am always one to encourage them to exercise a bit of caution,” he said.
 
Wow that sounds like quite the flood of sockeye.. wouldn't it be nice to be able to pick up a few socks out front on their way by :)
 
that is wonderful news. same for the Columbia 'brights', those headed above Bonneville. big problem has developed however, Wanapum dam has a 65' crack. they have now lowered the water level by 25' making the fish ladders nonfunctional. there is plenty of concern right now for just how they are going to get those record numbers of brights past this dam so they can spawn. bad year for this sort of issue to arise.
 
No need for bridge tolls, you can just drive across the river on the backs of sockeye. Hopefully predictions are correct. What a run it would be...
 
Don't know about the Fraser, but I do know the stamp/Somas return will be huge. We have never seen the numbers of jacks like we did last summer. No doubt that bodes extremely well and forecast return is up to 3 million fish which will translate into a banner year.
 
There is lots of good signs going into this season. Large numbers of Chinook jacks on the west coast of the Island, especially Nitnat and Conuma where they had 50% of the 2013 runs being jacks. Heard that the PA sockeye run usually sees 30-40 thousand jacks and in 2013 they got 400,000! The Cowichan had 7000 Chinook return last year, 4000 were jacks. Also the Geogia Strait coho are doing much better the last 3 years. They are seeing a return to 15% survival back to where it was in the 60's and 70's. They had been doing much worse for many years down around 2%. Then everyone knows about the potential Fraser sockeye run size. It is shaping up to be one of the best years. I'm looking forward to it!
 
Why would large number of jacks last year mean a good Chinook return this year ?
I thought they were just sexually mature runts ? :confused:
 
Past records have a direct correlation between jack returns and the next years adult returns.
So if you look at the numbers from the past you see a trend.
You can use that trend to predict the future.
Not sure why mother nature do this but that is what she does.
 
Why would large number of jacks last year mean a good Chinook return this year ?
I thought they were just sexually mature runts ? :confused:
Historical figures and returns show that a percentage will always "jack" or return as sexually mature 3 year olds. While the figure can vary dramatically depending on food availability in the ocean, when returns of jacks are outside of the normal range it usually bodes well for returning 4 year olds. For the Columbia river Chinook the following figures are available;

The following table goes back to the early 60's when they began counting jacks at Bonnie. The percentage comes from the number of jacks divided by the following year adult spring Chinook return. The jack survival rate is one of many factors that is looked at when estimating runs. The 2009 adult to jack percent will probably come in around 25%. It is shown as n/a as we don't have a final adult count until mid June.

It is amazing that the jack to adult perentages has really increased in 2007, 2008 and 2009. Based on historical percentages, surely we should have seen more adults going over Bonnie in 2008, 2009 and 2010.

YearJack percentage of following year adult return
2009N/A200815.3%200713.4%20064.3%20054.4%200412.0%20038.4%20023.4%20015.3%20005.4%19994.9%19982.0%19972.5%19964.1%19954.6%19943.9%19936.7%19921.9%19914.4%19903.6%19896.4%19885.2%19873.6%19865.0%19856.6%19845.1%19834.1%198211.0%19813.1%198012.6%19795.3%19784.5%19772.7%197618.0%19756.7%197410.6%19735.4%19725.8%19719.0%19707.2%196913.3%19685.6%19678.1%19668.2%19657.4%19643.8%19636.3%19625.2%19616.7%19603.8%
 
looking at jack returns is totally misleading. this is a correlational relationship, not a causative relationship. one year they were predicting a monster run of fish on the Columbia based on jack returns, but nothing showed up. citing this data is totally misleading as to what to expect. why jacks show up in big numbers some years and not others remains a mystery but is definitely not tied to or predictive of anything.
 
looking at jack returns is totally misleading. this is a correlational relationship, not a causative relationship. one year they were predicting a monster run of fish on the Columbia based on jack returns, but nothing showed up. citing this data is totally misleading as to what to expect. why jacks show up in big numbers some years and not others remains a mystery but is definitely not tied to or predictive of anything.

Jacks can be a good indicator of up coming runs. The principle of using jacks to forecast upcoming runs relates to survival in the first year of ocean life. In general, most mortality occurs in the first year, a large jack return indicates that many fish survived that first year (as someone said earlier, a certain proportion always return as jacks). Therefore, it is likely that the siblings of those jacks also did well in their first year and will return at high abundance. However, it is not totally cut and dried. Jack returns tell you nothing about conditions in ocean experienced by the adult fish that could have helped or hindered survival. Also the proportion that return as jacks is not totally genetic, it is also controlled partially by the environment. So, for example, feeding fish so they grow too rapidly in a hatchery will cause a higher percent to return as jacks.

As with most fisheries related issues it is not black and white
 
As with most fisheries related issues it is not black and white

if you choose to believe in this, ok with me. but as I indicated, there have been multiple instances of huge jack returns to the Columbia without follow on the coming year. why this happens, that is big jack returns, is another unknown and probably will never be understood. but it makes for good conversation, that's for sure.

or take this headline from a news source today:

"Study Links Frequent Facebook Use to Eating Disorders Among College Women"

so do you conclude that Facebook caused eating disorders?? I suggest the same logic needs to be applied to jack returns.
 
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Another article about this years projected numbers... And maybe some reasons why.

http://commonsensecanadian.ca/missing-fish-farms-offer-clue-anticipated-70-million-sockeye-return/
Certainly a stretch to suggest that the numbers will be based on projected survival of sockeye smolts past the fish farms that were reduced in numbers by 30%. I am as much an anti-farm guy as anyone, but this is a reach at best. DFO's numbers (which are actually PSC's numbers) are based on ocean survival and Mid-ocean temperatures, currents and conditions during the 2 1/2 years that these fish spend in the Pacific. They do not take into consideration any potential mortalities associated with fish farm proximity during outflow migrations.

I am actually really surprsed that PSC has gone back down the road of early season projections based on 50% confidence levels. As soon as the press gets a hold of that they broadcast it all over and it gets real traction. All of a sudden the projection goes from "potentially" as high as..... to 70 million sockeye are RETURNING!!!!!!!!!!!! Then when anything less than that figure shows up they are setting themselves up for failure.

We will likely see a very big return this year there is no doubt. All the stars seem to be aligning, from a very high parent brood year and hig hspaning success of that parent year, to very good ocena survival, but I am pretty sure that the projections from DFO and PSC have nothing to do with salmon farms, sea lice or the obvious connection bewteen them and migrating sockeye smolts.
 
The forecast numbers issued to the media aren't based on the 50% confidence levels, in fact the full suite of forecast probabilities, 10%, 25%, 50%, 75% and 90% were provided, consistent with their current policy. No matter which confidence level is used to manage the fishery, that prediction will never be hit, it'd be like winning the lottery. The thought is if you show the full suite of probability from worst case scenario (below the 90% confidence level) to best case scenario (above the 10% confidence level), the run will fall within that range 80% of the time. Of course the media hears a big number and just runs with that …. so same old, same old problem. Once the public reads something in a newspaper or on a forum, well then it's gospel and anything less is incompetence by fisheries manager's

Ukee
 
The forecast numbers issued to the media aren't based on the 50% confidence levels, in fact the full suite of forecast probabilities, 10%, 25%, 50%, 75% and 90% were provided, consistent with their current policy. No matter which confidence level is used to manage the fishery, that prediction will never be hit, it'd be like winning the lottery. The thought is if you show the full suite of probability from worst case scenario (below the 90% confidence level) to best case scenario (above the 10% confidence level), the run will fall within that range 80% of the time. Of course the media hears a big number and just runs with that …. so same old, same old problem. Once the public reads something in a newspaper or on a forum, well then it's gospel and anything less is incompetence by fisheries manager's

Ukee
Exactly, well put. Can you imagine what the Fraser is going to be like this summer. All that talk about sockeye returns......Gong show extraordinaire.
 
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