Debs' 的个人资料SKYVIEW照片日志列表更多 ![]() | 帮助 |
|
8月17日 Alexandra speaks for the Salmon Missing In ActionDear Fisheries Minster Shea: I am following the news that DFO is reporting 11 million sockeye salmon have vanished. The magnitude, social impact and trajectory of this fishery failure is on a par with the collapse of Canada’s Atlantic cod. Scientists have published on what went wrong within DFO to allow the cod, one of earth’s most abundant food resources to collapse. They identified political distortion of the science as a critical factor. They argue the public was not accurately informed as the collapse was underway. (Hutchings, J.A., Walters, C., and Haedrich, R.L. 1997. Is scientific inquiry incompatible with government information control? Can. J. Fish. Aquat. Sci. 54: 1198–1210. ) This brings me to several recent comments in the media attributed to high-ranking DFO employees. Bary Rosenburger, DFO area director for the Fraser, describes the Fraser sockeye collapse as unexpected and that DFO doesn’t know what happened (Globe and Mail, Aug 13, 2009). But the next day he goes on to say it does not look like fish farms are responsible (BCLocalNews.com). On August 15, Paul Sprout, Pacific Region Director for DFO published a letter in the Globe and Mail “Sea lice from fish farms are not the explanation of this year’s extremely poor marine survival of Fraser River sockeye...” Given both the importance of the Fraser sockeye to the BC economy, ecology and First Nations; and the analysis that DFO political interference with science may have allowed the east coast cod to collapse, it is reasonable to ask what science did Sprout and Rosenburger use to inform the public that fish farms are not responsible for this sockeye collapse? Two of your highest ranking employees involved with this fishery have publicly exonerated the fish farmers, an industry associated with catastrophic salmon collapse worldwide (Ford and Myers 2008) and here in BC (Krkosek et al 2007). The most recent past catastrophic BC wild salmon collapse was in 2002 when 99% of the Broughton pink salmon failed to return. The Pink Salmon Action Plan (http://www.fish.bc.ca/node/135) temporarily removed farm salmon from the Broughton pink salmon migration route and the next generation of pink salmon returned at the highest survivorship ever recorded for the species (Beamish et al 2006). That management decision was reversed and the stock collapsed again. Dr. Brian Riddell of the Pacific Salmon Foundation suggests that answers to the fate of these sockeye may lie in what happened to them right after they left the Fraser River, before they reached the open ocean. I and others did examine this run of sockeye shortly after they left the Fraser River. We were the last scientists to see these fish before they disappeared, and they had up to 28 sea lice on them as they passed the salmon farms off Campbell River. Before you reply that DFO’s Dr. Simon Jones says young salmon are highly resistant to lice, please review his publications. I do not find the data in his studies to support this claim once the lice are attached to the fish. Many international scientific papers run contrary to Dr. Jones’ assertions. I cannot tell you that fish farms definitely killed all 11 million missing Fraser sockeye, but fish farms most certainly are involved because DFO and the Province of BC sited them on the Fraser River migration route. The missing sockeye did swim through fish farm effluent. Rather than exempting fish farms from your investigation you must order complete disclosure of the health and number of farm salmon on the missing Fraser sockeye migration route in 2006-present. And we, the people of Canada and beyond, need to know why DFO is exonerating fish farms in the first few days of the investigation on what happened to one of earth’s most generous human food supplies? Alexandra Morton www.adopt-a-fry.org 8月15日 Salmon numbers decline!Hello All: In the last two weeks nearly 2,000 more people have signed our letter asking the Minister of Fisheries to apply the laws of Canada to salmon farms. The Fraser sockeye are returning at 1/10 of their predicted number. While government continues to guess at the reason, they refuse to respond to the one factor shown to have exactly this effect worldwide and is easily fixed. Please read this and stay tuned for how we can bring reason to this situation. Thank you all for taking a stand and putting your name to this. The only way government will be allowed to see this situation for what it is, is if there are too many of us to ignore. We can do this, Alexandra Morton ![]() Fraser River's salmon stocks 'beyond a crisis' MARK HUME August 13, 2009 http://www.theglobeandmail.com/news/national/fraser-rivers-salmon-stocks-beyond-a-crisis/article1250175/ The mysterious collapse of the B.C. sockeye run has dashed hopes raised just weeks ago of a good return this year The Fraser River is experiencing one of the biggest salmon disasters in recent history with more than nine million sockeye vanishing. Aboriginal fish racks are empty, commercial boats worth millions of dollars are tied to the docks and sport anglers are being told to release any sockeye they catch while fishing for still healthy runs of chinook. Between 10.6 million and 13 million sockeye were expected to return to the Fraser this summer. But the official count is now just 1.7 million, according to the Department of Fisheries and Oceans. Where the nine to 11 million missing fish went remains a mystery. "It's beyond a crisis with these latest numbers," said Ernie Crey, fisheries adviser to the Sto:lo tribes on the Fraser. "What it means is that a lot of impoverished natives are going to be without salmon. ... We have families with little or no income that were depending on these fish. ... It's a catastrophe," he said. Mr. Crey said a Canada-U.S. salmon summit should be called to find solutions. The sockeye collapse is startling because until just a few weeks ago it seemed the Fraser was headed for a good return. In 2005, nearly nine million sockeye spawned in the Fraser system, producing a record number of young, known as smolts, which in 2007, began to migrate out of the lakes where they'd reared for two years. Biologists for the DFO were buoyed by the numbers - the Chilko and Quesnel tributaries alone produced 130 million smolts - and because the young fish were bigger than any on record. Those fish were expected to return to the Fraser this summer in large numbers, and those projections held until a few weeks ago when test fishing results began to signal a problem. Barry Rosenberger, DFO area director for the Interior, said test nets at sea got consistently low catches, then samples in the river confirmed the worst - the sockeye just weren't there in any numbers. There had been some hope the fish - which return in five distinct groups, or runs - might be delayed at sea, but Mr. Rosenberger dismissed that possibility. "There are people hanging on to hope ... but the reality is ... all indications are that none of these runs are late," he said. Mr. Rosenberger said officials don't know where or why the salmon vanished - but they apparently died at some point during migration. Brian Riddell, president of the Pacific Salmon Foundation, said: "We've been pondering this and I think a lot of people are focusing on the immediate period of entry into the Strait of Georgia and asking what on earth could have happened to them. What we're seeing now is very, very unexpected." Some are pointing fingers at salmon farms as a possible suspect because of research that showed smolts became infested with sea lice as they swam north from the Fraser, through the Strait of Georgia. "This has got to be one of the worst returns we've ever seen on the Fraser. ... It's shocking really," said ecologist Craig Orr, of Watershed Watch. Dr. Riddell said sea lice infestations are a possible factor, but it is "extremely unlikely" that could account for the entire collapse. "We have had the farms there for many years and we have not seen it related to the rates of survival on Fraser sockeye [before]," he said. Dr. Riddell said a sockeye smolt with sea lice, however, might grow weak and become easy prey or succumb to environmental conditions it might otherwise survive. Alexandra Morton, who several years ago correctly predicted a collapse of pink salmon runs in the Broughton Archipelago because of sea lice infestations, in March warned the same thing could happen to Fraser sockeye. She said researchers used genetic analyses to show Fraser sockeye smolts were getting infested with sea lice in the Strait of Georgia. "I looked at about 350 of this generation of Fraser sockeye when they went to sea in 2007 and they had up to 28 sea lice [each]. The sea lice were all young lice, which means they got them in the vicinity of where we were sampling, which was near the fish farms in the Discovery Islands. If they got sea lice from the farms, they were also exposed to whatever other pathogens were happening on the fish farms (viruses and bacteria)," Ms. Morton said in an e-mail. "There's a lot of different beliefs as to why the fish haven't shown up, but I think it's pretty clear where there are no fish farms salmon are doing well," said Brian McKinley, a guide and owner of Silversides Fishing Adventure. "It's pretty frustrating to watch what is happening," he said from his boat, anchored on the river near Mission. "I remember sockeye would just boil through here in August and September. It was insane ... now the river seems dead." Dan Gerak, who runs Pitt River Lodge, said there is an environmental crisis on the river. "Definitely something's got to be done - or it's finished forever," he said of the Fraser's famed salmon run. Other big runs of salmon are expected to return this year - notably pinks where are projected to number 17 million - but it is too early to tell if the sockeye collapse will be repeated with other species. |
|
|