Siuslaw River Salmon Depend on Science and Politics for Future

By Rosanne Skirble
Nestled among willows and pine trees, Knowles Creek flows gently into a tributary of the Siuslaw River on the Central Oregon Coast. Restoration ecologist T.C. Dewberry, wearing a wet suit and snorkel, wades into a shallow pool along the creek to get a closer look at juvenile wild salmon and steelhead.
"We'll stop on this side of the log," he says. "There were 89 Coho and 40 Steelhead on this side of the pool, and the pool is let me see…15 meters by five meters. So that's a pretty high count."
The Siuslaw River Basin was once one of the most productive aquatic ecosystems in the world. In a good year in the early 20th century the river yielded 500,000 salmon to local fishermen.
But by mid century, salmon harvests from the river had plummeted to just a few thousand fish per year, a casualty of logging, grazing, mining, farming, and irrigation near the sensitive salmon streams. In all, 26 species of Pacific salmon were included on the Endangered Species List.
In his yearly snorkel survey, ecologist T.C. Dewberry counts juvenile fish at Knowles Creek near the headwaters of the Siuslaw.
"We realized that especially when the numbers of fish were low, in those years, 80 or 90 percent of the fish may be in 15 or 20 percent of the habitat," he notes. "And so those are the areas that are important because year in and year out those are the areas that produce the most fish. So our approach was to first identify those and find out how to protect those, so at least we are not losing ground. And, that's what happened before. Nobody was paying attention to those critical areas that are producing all the fish. And we were losing those on the landscape. Where now, by identifying them and trying to minimize the risks in just this small little part of the landscape, it gives us a much better chance, we think, of finding a way to actually be successful at restoration."
T.C. Dewberry has snorkeled the entire 804 kilometers of the Siuslaw River and says there has been progress in restoring the waterway to its original state.
Dewberry: Ten years ago this was a bedrock reach (extremely shallow stream). You could roller skate literally on it. And now the gravels (gravel-bottomed stretches of river) are a meter deep through here, and we are looking at a number of really nice pools with thickets of willow along the edge and a beaver pond right here, and a lot of the water is moving through the gravels and cooling. This is just ,you know, a real critical area of salmon production right now.
Skirble: What does it take to restore a salmon stream?
Dewberry: What it takes is to get the soil, water and food resources moving in a natural manner, from the ridge tops, down hill slopes, into streams, channels and then out the estuary. I like to think of it as the digestion metaphor for the landscape. This is the digestive apparatus of the landscape. If the digestion is happening right, then that's what forms the fish habitat and provides the food for the fish and they have what they need. So in our view, it is the recovery of that natural process, that digestive mechanism that is critical.
Skirble: How do you go about doing that?
Dewberry: Here where the hillsides and tributaries are very steep and we get over 100 inches of rain every year, we get a lot of landslides. Most of the material moves in landslides. And, what is critically important is the trees, especially the large trees because they have the root strength on the hillsides to hold these areas intact. And if you have these big pieces in the material when it sets up in the stream, it can withstand the storm flows and stay in place, and then build these hot spots. It can accumulate the gravels and food resources above them and create these pools like we are in here to create the high quality salmon habitat.
Mr. Dewberry credits progress on the Siuslaw to a partnership that includes an environmental group, a timber company and various government agencies.
But politics can slow restoration, despite at least $700 million a year in state and federal projects dedicated to salmon recovery. We meet attorney Patti Goldman at the Nisqually National Wildlife Refuge, near the Puget Sound in Washington State. She is unhappy about a new government rule that would factor in millions of hatchery-raised salmon in deciding whether wild salmon should continue to be protected under the Endangered Species Act.
Ms. Goldman is the managing attorney for Earth Justice, a law firm that advocates for endangered species. She says the Bush administration ruling violates the spirit and the letter of the Endangered Species Act.
"It is blatantly illegal, and it will be challenged if it becomes final because the Endangered Species Act is all about protecting species in their natural environments," she says.
Ms. Goldman says hatchery fish spawned in plastic buckets, incubated in trays and raised in concrete pools simply do not qualify.
Attorney Russ Brooks disagrees. He says the hatchery proposal makes good sense and would bring relief to the many farmers and ranchers he represents. Mr. Brooks says they believe the Endangered Species Act has imposed burdensome restrictions on their livelihoods, including limits on their access to water:
"If they can't have access to their water via their state granted water rights, then they basically have no farms," said Mr. Brooks. "They can't irrigate their crops or they can't provide water for cattle, and you go through that a year or two and something like that eventually down the road you lose the farm. And, that has happened to many, many farmers in the Klamath basin or where they basically face bankruptcy or they had to allow fields to remain fallow with no crops and when that happens they lose their livelihood." But Earth Justice attorney Patti Goldman says farmers and ranchers can see for themselves that the cost of protecting and preserving local streams today is less than the cost of restoring a damaged ecosystem tomorrow.
"If you look at the cost to a farmer of not being able to plant a crop this season right next to a salmon stream and use chemicals that would harm salmon, and you only look at the farmers' loss, you will come up with a large number perhaps, on that side of the equation. But, if you look at the impacts of the pollution in the salmon stream. And, if you look at the impacts of salmon in the economy, in the sports fishing industry and tourism and commercial fishing and the livelihood of native Americans, you would come up with a very different equation. And, I don't think that you would come up with the conclusion that it is bad for the economy to protect salmon," argues Ms. Goldman.
Patti Goldman believes the hatchery proposal if implemented could threaten the survival of endangered species, and at the same time cripple efforts to repair the Siuslaw and other rivers in the region.
Russ Brooks says a robust salmon population meets the requirements of the law.
A decision is expected before the U.S. presidential election in November.
I’m Rosanne Skirble.

注释：
willow 柳树
pine 松树
Central Oregon Coast 俄勒冈州中部海岸
juvenile 幼年的
coho 银大马哈鱼
steelhead 硬头鳟（溯河产卵海鱼）
plummet 大幅度地降低
Endangered Species List 濒危物种表
landscape 风景
gravel 砾石
estuary 港湾，河口
digestion 领悟
metaphor 隐喻
tributary 支流
hatchery 孵卵所
Endangered Species Act 《 濒危物种法》
Klamath 克拉马斯河
rancher 牧场主， 农场工人