Sentences with phrase «salmon population»

This prompted Arnold Schwarzenegger, California's governor, to declare a state of emergency — cautioning, alongside the Department of Fish and Game, that it would likely cost the state upwards of $ 255m and 2,263 jobs this year.This precarious situation was precipitated by another record decline in the Central Valley's salmon population — the second - lowest in more than 35 years.

The 2012 iron fertilization generated an algae bloom that fed salmon at the right time to boost the salmon population * the salmon bloom died in days and then fell to the bottom of the ocean taking large amounts of CO2 with them

The effect on the salmon population is disturbing, but pale in comparison to the fish kills caused by natural disasters like hurricanes and psunamis.

While the group's focus remains on climate change, they have also raised awareness around the environmental impacts of fish farming and pesticides and promoted salmon population protection.

In the Northwest, existing hydropower facilities are not defined as renewable sources because of the impact on the salmon population.

But dams are not the only things causing problems for salmon population.

This is a reflection on our society's poor management of the salmon population and our inability to control our toxic wastes.

Julie also led a Collaborative Fisheries Research project in which scientific data on the diet of salmon is collected in partnership with local recreational and commercial fishers, providing data to help understand the recent salmon population crash (Thayer et al. 2013).

Heffernan says that «there was no firm evidence of benefits to the salmon population» from the iron addition made with...

Because the Chinook salmon diet consists of over 90 percent alewife, the new study predicts a smaller Chinook salmon population if nutrients remain low and invasive mussels remain abundant.

«We have started cryopreservation of [the spermatogonia of the] endangered sockeye salmon population in Idaho with NOAA -LSB-(National Oceanic & Atmospheric Administration)-RSB-,» Yoshizaki says.

Lenders concludes, «Conversation programmes aimed at the recovery of the salmon population will have little effect, regardless of how clean the water is.

The bears had previously gobbled up to 75 percent of the salmon population each year; researchers believe the change will have broad consequences, including increased salmon numbers disrupting the marine food chain.

Because the fishing takes place in the river itself - as opposed to the open ocean where many salmon stocks mingle - the fishermen are able to target a specific, sustainable salmon population.

But in a study in the December 14th issue of the journal Science, researchers say these farms could drive wild salmon populations to extinction.

And then get loose to infect wild juveniles, threatening the very survival of wild salmon populations.

Given the controversy surrounding George's latest bid — which is billed as an attempt to restore salmon populations but also aims to earn saleable carbon credits — Scientific American spoke with him on October 19.

Coho salmon populations have fallen to less than 5 per cent of their former size along the coast of Oregon and northern California.

Other far - reaching effects may include changes in bear demographics due to the change in their diet, evolving salmon populations and impacts on plant pollinators.

Finney believes that changes in climate cause the cycles in salmon populations, and as scientists struggle to understand the rate and effects of global warming, salmon may help them distinguish normal climate variations from the early warnings of a system gone dangerously wrong.

Two thousand years ago, salmon populations abruptly dropped in the North Pacific.

He has learned that salmon populations increased and decreased through the centuries, in complex but predictable cycles.

The researchers weighed several climate factors in freshwater and the ocean to determine which had the greatest effect on salmon populations.

But others suggest that the health of some of the region's salmon populations — such as bountiful pink salmon off of Oregon and Washington and still thriving Alaskan runs — shows that with proper management we may be able to retain lively populations of both wild salmon and fishers.

Of all the factors, variation in winter river flows had the strongest influence on salmon populations, reducing their growth rate.

The new study published in the peer - reviewed journal Global Change Biology says such increased flow variability has the most negative effect on salmon populations of several climate factors considered.

But at some level and in some conditions fluctuations may begin to take a toll on salmon populations.

With 13 different salmon populations in the region already teetering on the brink, and the climate only getting hotter, time is surely of the essence.

Its heart was smaller and had a poorer blood supply than did the hearts of Chilko and other salmon populations that had to fight the rapids, Eliason and her colleagues report online today in Science.

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

In that project, US entrepreneur Russ George convinced a Haida Nation village to pursue iron fertilization to boost salmon populations, with the potential to sell carbon credits based on the amount of CO2 that would be sequestered in the ocean.

The salmon populations once showed a strong portfolio that has become weaker in recent decades, including a recent fishery collapse due to all sub-populations declining simultaneously.

While the conclusions of this study were not without controversy, it did seem that the salmon populations recovered when the farms idled.

Elephant seals are even helping track the size and health of U.S. salmon populations.

ANILCA redesignated the monument as Katmai National Park «to protect habitats for, and populations of, fish and wildlife including, but not limited to, high concentrations of brown / grizzly bears and their denning areas; maintain unimpaired the water habitat for significant salmon populations; and to protect scenic, geologic, cultural, and recreational features.»

ANILCA states that Katmai National Park and Preserve is to be managed for the following purposes, among others: to protect habitats for, and populations of, fish and wildlife, including, but not limited to, high concentrations of brown / grizzly bears and their denning areas; to maintain unimpaired the water habitat for significant salmon populations; and to protect scenic, geological, cultural, and recreational features.

Pollution and declining salmon populations then caused declines in from the 1970s - 1990s.

Increasing egg to smolt survival will have drastic effects on salmon populations.

Take, for example, the massive declines in returning chinook salmon populations this year (and sockeye last year).

In the meantime, CO2 levels keep going up, salmon populations plummet, and we continue to speed towards the edge of the cliff....

Four years after the Exxon Valdez ran aground in Prince William Sound, Alaska, herring stocks collapsed and a marked decline was seen in salmon populations.

For many forests, you also need to know the history bear and salmon populations to properly interpret growth:

He was awarded the Goldman Prize in 2007 for his efforts to protect dwindling wild salmon populations from over fishing.

The coal train traffic may also take to the Colombia River which, in addition to clogging an already crowded water way, could diminish tribal fishing, hurt salmon populations and block popular recreation.

Dr. Hyatt heads the Salmon in Regional Ecosystems Program at DFO's Pacific Biological Station in Nanaimo where his research focus includes: (1) the status of salmon populations in the Pacific Region, (2) climate effects on the life history and population dynamics of salmon, and (3) the development of new «tools» to support fisheries management.

In spring 2005, above - average ocean temperatures and reduced ocean movement resulted in a 20 to 30 percent drop in juvenile marine salmon populations.

Small coastal basins that are the primary water source for most communities and essential to Pacific salmon populations have been particularly affected.

Human activities such as dam building, logging, pollution, and overfishing have already depressed salmon populations in the Northwest to historically low levels.2 Many salmon species are classified as threatened or endangered.

In that project, US entrepreneur Russ George convinced a Haida Nation village to pursue iron fertilization to boost salmon populations, with the potential to sell carbon credits based on the amount of CO2 that would be sequestered in the ocean.

Environmental controls of phenology of high - latitude Chinook salmon populations of the Yukon River, North America, with application to fishery management