Sentences with phrase «for spawning salmon»

Historically, the Frank Church / River of No Return Wilderness was a refuge for spawning salmon but today this area remains blocked by three downstream dams.

Not exact matches

Purely and simply he loves Atlantic salmon, and this was why, on this hard winter's afternoon, we were reconnoitering the hill streams, looking for the patches of white pebbles where the salmon had used their broad tails to carve out the spawning beds, looking for the vulnerable pools where the fish lie.

Thanks to the salmon's excellent jumping abilities, a number of animals can complete the arduous journey to the spawning area — only to end up in an area that is unfit for spawning.

The construction of water mills caused the destruction of the gravel beds in streams, making them unsuitable for salmon to spawn.

Big Creek and the upper tributaries of the Middle Fork provide the best spawning habitat remaining in Idaho for the severely depleted Pacific salmon.

Spawning habitat seems to be optimal in parts of the Frank Church Wilderness, and if these conditions can be described and quantified, they might be offered as a prescription for ailing salmon elsewhere.

Chum salmon swim hundreds of miles upstream to spawn, and served as food for ancient as well as modern Alaskans.

Then, once the salmon spawning ends, Dolly Varden shrink their guts and survive for the next year off their reserves in cool water because there is little else to eat in the rivers.

Perhaps the hardest hit and most talked about salmon fishery in the world — California's Sacramento River Chinook run — has been off - limits to fishers for two years now because of the low volume of wild fish returning to spawn.

In 2004, for example, 80 % of some salmon populations died of heat stress before reaching their spawning destinations.

Juvenile salmon that enter the ocean this year amid the gradually improving conditions will not return from the ocean to spawn in the Columbia and other rivers for another two years or more, so fishermen should not expect adult salmon numbers to improve much until then.

Pacific salmon die immediately after spawning because reproducing, for them, entails a literally upstream battle they are never to repeat.

Another benefit of Kamchatka's isolation is protection for populations of chum, sockeye, chinook, coho and pink salmon, which return by the millions to spawn in Kamchatka's rivers.

Climate change will also increase precipitation and raise water temperatures, which could eliminate suitable spawning habitat for salmon and wash away their eggs and fry from spawning streams, killing the young.

How the salmon use their energy during migration and spawning affects how successful they will be reproductively; energy used for migration can not also be used for courtship.

By erecting thirty thousand dams of significant size across the American West, they dewatered countless rivers, wiped out millions of acres of riparian habitat, shut off many thousands of river miles of salmon habitat, silted over spawning beds, poisoned return flows with agricultural chemicals, set the plague of livestock loose on the arid land — in a nutshell they made it close to impossible for numerous native species to survive.

Grizzlies flock to the park's Brooks River in summer to fish for sockeye salmon on their spawning run inland from the Bering Sea, a spectacle that humans can view and photograph from elevated wooden platforms.

The pool of water at the base of the waterfall is the final stop for many salmon who are born here, and who end up returning to die here after an arduous trip upstream to finally spawn at the very spot where they started their lives.

Today, one of the primary purposes of Katmai National Park and Preserve, based on legislation, is to protect habitats for and populations of fish and wildlife, including, but not limited to, high concentrations of brown bears and their denning areas, and maintain unimpaired the watersheds and water habitat vital to red salmon spawning.

Due to the island's many freshwater lakes and streams that feed into the protected island channels — and therefore prime spawning locations — it is here where sport fishermen from around the world flock for some of the best salmon fishing in the world.

Chinook and sockeye salmon from central Idaho, for example, travel over 900 miles and climb nearly 7000 feet from the Pacific ocean as they return to spawn.

Famous for salmon fishing, a «fish ladder» on the dammed river helps the salmon to swim upstream to spawn.

In 1978, through presidential proclamation, President Carter expanded Katmai National Monument by 1.3 million acres to protect «a viable gene pool population of the Alaska brown bear... headwaters of the drainages which provide the spawning grounds for red salmon... and the unique subsistence culture of the local residents.

Only after salmon begin to spawn and die at the end of August and early September will fishing conditions improve enough for large numbers of bears to return to Brooks River.

Attracted to the spawning salmon the bears may be seen ascending from the forest and fishing for salmon on the river's shores!

Jimmy Carter In 1978, through presidential proclamation, President Carter expanded Katmai National Monument by 1.3 million acres to protect «a viable gene pool population of the Alaska brown bear... headwaters of the drainages which provide the spawning grounds for red salmon... and the unique subsistence culture of the local residents.

The area serves as a vitally important migratory corridor and spawning habitat for several species of salmon and feeding area for a large number of brown bears.

Redwood Creek provides a critical spawning and rearing habitat for several threatened species, including coho or silver salmon (Oncorhynchus kisutch) and steelhead trout (Oncorhynchus mykiss).

Check the park's schedule of ranger programs for an opportunity to learn more about the spawning salmon.

What about the prime question for the fishing communities in the region: Did the iron supplement boost salmon spawning runs and harvests?

Half of the income generated for Shorebank from the card goes to «Salmon Nation» an economic, cultural and ecological community collective in the bioregion that contains Pacific salmon spawning grounds.

On Friday, the National Oceanic and Atmospheric Administration said it had authorized state officials in Oregon and Washington to «lethally remove» a population of sea lions which for years have congregated just below the Bonneville Dam, about 150 miles from the Pacific Ocean, and gorged on salmon migrating upriver to spawn.

Atlantic salmon in north - west England will be affected negatively by climate change because suitable flow depths during spawning time (which now occur all the time) will, under the SRES A2 scenario, only exist for 94 % of the time in the 2080s (Walsh and Kilsby, 2007).

Alaskan River Riches Southeast Alaska has one of the healthiest salmon fisheries in the world, thanks to strict regulation and bountiful wild rivers for fish to spawn.

The sound of leaves crunching under foot, the sight of salmon swimming upstream to spawn, the fragrance of apple pies baking in the oven, the taste of the wild blackberries from the local bushes and the touch of my granddaughter's hand in mine as we go for an autumn walk.