Warmer than normal temperatures since the beginning of the water year has left snowpack far below normal.
This summer, several juvenile coho salmon were spotted in the Russian River’s upper basin — a first in more than 30 years.
Most Pacific Coast salmon and steelhead stocks listed under the federal Endangered Species Act have increased in abundance over a 25-year span, but most still remain far under their recovery goals, according to a recent study by NOAA Fisheries scientists.
A 2022 petition to list Oregon Coast and Northern California Coastal Chinook salmon as threatened or endangered under the federal Endangered Species Act was denied by NOAA Fisheries this week.
Speakers at a congressional hearing to consider the issue of predatory sea lions in the lower Columbia River weighed heavily towards recommending that more of the animals should be lethally removed from the river to protect salmon and steelhead.
In its update to a 2007 climate report, a team of scientists noted that the rate and magnitude of changes in temperature and hydrology in the Columbia River basin has amplified over the past two decades and those changes will impact salmon and steelhead.
A little more than a year after the removal of four hydroelectric dams on the Klamath River, California Department of Fish and Wildlife scientists are seeing salmon reoccupying just about every corner of their historic habitat.
The U.S. Army Corps of Engineers Walla Walla District, in partnership with the Washington Department of Fish and Wildlife, the Yakama Nation, the Washington Department of Ecology, and the Mid-Columbia Fisheries Enhancement Group has awarded a $1.2 million construction contract to PIPKIN INC. for the Bateman Island Causeway removal project.
The most recent filings in U.S. District Court in Portland by plaintiffs in the latest challenge to the biological opinion of the federal Columbia/Snake river hydropower system’s impacts on salmon and steelhead does not have to do with impacts by the federal dams, but instead it is a plea to dismiss a nearly two-year old counterclaim by the state of Idaho.
A new study led by the Washington Department of Fish and Wildlife’s Toxics Biological Observation System unit explores an unseen threat to the Pacific Northwest’s Chinook salmon — chemical contamination.
The state of Washington and Columbia River tribes are lining up in U.S. District Court to support a request for a preliminary injunction filed Oct. 14 by Earthjustice seeking emergency operational changes at federal Columbia and Snake river dams aimed at protecting endangered salmon and steelhead from harms caused by dam operations.
The population of white sturgeon from Hells Canyon Dam to Lower Granite Dam is in decline, with fewer juvenile sturgeon found in both the 101 miles of free-flowing river and 36 miles of reservoir water. That decline began when the lower Snake River dams were completed, according to information provided by the Idaho Department of Fish and Game at last week’s Northwest Power and Conservation Council meeting.
The U.S. Army Corps of Engineers is alerting Willamette Valley residents that it will begin drawing down reservoirs backed up behind some of its 13 dams in the river system, an action designed to aid the downstream migration of salmon and steelhead through the dams, but also one that has increased downstream turbidity that impacts city drinking water.
A video camera captured a Chinook salmon ascending the fish ladder at Keno Dam on the upper Klamath River last week (Sept. 24), the first picture of a salmon ascending the upper bays of the ladder since four hydroelectric dams were removed on the Klamath River last year.
Scientists at NOAA’s Northwest Fisheries Science Center helped pioneer the study of an automobile tire toxin found to kill coho salmon when it runs off highways in stormwater and into streams. Now they have found a way to measure the toxin, 6PPD-quinone, directly in marine life, including fish, shellfish and marine mammals.
Projects in Oregon’s McKenzie River, a tributary of the Willamette River, are restoring the river from its recent channelized state to a healthy river with connected flood plains and natural flows, a river that is much more conducive to salmon and steelhead rearing, according to a recent presentation at a Northwest Power and Conservation Council meeting.
The U.S. Fish and Wildlife Service has completed a five-year status review of the Columbian white-tailed deer and found that it has met the criteria outlined in its recovery plan. As a result, the Service is recommending the deer be removed from the federal Endangered Species List.
For years, scientists at Washington State University’s Puyallup Research & Extension Center have been working to untangle a mystery: Why do coho salmon in Puget Sound creeks seem to suffocate after rainstorms — rising to the surface, gaping, and swimming in circles before dying?
Predation by sea birds on salmon and steelhead smolts in some years is responsible for as much as 50 percent of all smolt mortalities during the outmigration to the sea from the Columbia and Snake river basins, according to a presentation this week at a meeting of the Northwest Power and Conservation Council.
Idaho’s first endangered sockeye salmon arrived at a Sawtooth Basin fish trap July 23, according to the Idaho Department of Fish and Game.
Anticipating extra turbidity and an interruption of the clean drinking water it withdraws from the North Santiam River, the City of Salem declared a state of emergency at its City Council meeting last week. The expected turbidity is due to the U.S. Army Corps of Engineers’ deep drawdown next year of its reservoir backed up behind Detroit Dam to aid juvenile salmon and steelhead passage, particularly for salmon and steelhead listed as threatened under the federal Endangered Species Act.
Two environmental groups are suing to halt what they say is pollution released from three commercial net pen aquaculture facilities that produce steelhead located on the Columbia River in Eastern Washington. The groups say Pacific SeaFood Aquaculture LLC has been violating its Clean Water Act permits since 2020 and has been harming wild fish and the river’s ecosystem, home to anadromous fish species listed under the federal Endangered Species Act.
In a review of 40 years of habitat restoration projects, a panel of fisheries scientists concluded that projects that remove barriers to salmon and steelhead, augment stream flows and add wood to give streams structure would likely achieve what they set out to do within a short period of time.
Rising toxins found in bowhead whales, harvested for subsistence purposes by Alaska Native communities, reveal ocean warming is causing higher concentrations of algal toxins in Arctic food webs, according to new research published in the journal Nature.
Groundwater is declining across Eastern Washington’s complex, interconnected aquifer system, as people draw on it for irrigation, drinking and other uses at a pace that threatens its sustainability, according to a new study by a Washington State University researcher.
Yellowstone National Park is celebrating an ecological milestone along with a key anniversary this summer, Oregon State University researchers report.
Colorado Parks and Wildlife has confirmed three new wolf families — the One Ear, King Mountain and Three Creeks packs. They join the already established Copper Creek pack, which also welcomed new pups. While the total number of pups is still to be determined there are a minimum of four pups in the King Mountain pack.
Federal agencies this week backed away from their efforts to prepare a supplemental environmental impact statement for Columbia River basin dam operations and their impact on salmon and steelhead, citing a June 12 Presidential Memorandum as their justification.
A vitamin deficiency likely killed as many as half of newly hatched fry of endangered winter-run Chinook salmon in the Sacramento River in 2020 and 2021. These new findings were published in the Proceedings of the National Academy of Sciences.
NOAA Fisheries’ Office of Habitat Conservation awarded the Tribe $3.3 million to remove the 55-foot-tall, 425-foot-long Kwoneesum Dam on Wildboy Creek. The dam, which was removed in 2024, blocked upstream salmon and steelhead migration on the creek for almost 60 years.
Montana’s wolf population has remained relatively stable in the past few years with only slight declines in the statewide population estimates, according to the 2024 Montana Fish, Wildlife & Parks annual wolf report.
A century after wolves were wiped out in California, the animals have mounted a promising comeback in the state, with a small population that has grown to at least 50 wolves.
NOAA has developed a new high-resolution ocean model to understand and predict West Coast ocean changes.
The Washington Department of Fish and Wildlife is seeking public input on a draft periodic status review for the marbled murrelet, which includes a recommendation to keep the bird on the state endangered species list.
Four Columbia River basin treaty tribes recently completed their second restoration plan for “imperiled” Pacific lamprey in the basin fifteen years after the first such plan in which the Tribes had urged aggressive action in order to recover the culturally significant fish.
The eastern North Pacific population of gray whales that migrates along the West Coast of the United States has continued to decline, with reproduction remaining very low. Two new Technical Memorandums from NOAA Fisheries’ Southwest Fisheries Science Center report the estimated population size and calf productivity in 2025.
Due to lower-than-normal precipitation in May and an early snowmelt in the Northwest, there will be less water available for salmon and steelhead this summer in the Columbia and Snake river basins as water supply forecasts are continuing their downward slide.
The Trump administration issued a memorandum this week that disrupts Columbia River basin salmon and steelhead recovery by rescinding a 2023 agreement that included the federal government, two states and four Columbia River tribes and funded that effort with nearly $1 billion.
Six of fourteen salmon and steelhead species in the state of Washington that are listed under the federal Endangered Species Act are showing modest improvement. However, according to the 2024 State of Salmon report by the Washington Governor’s Salmon Recovery Office, eight species are still struggling and face extinction.
Higher flows from Libby Dam designed to encourage endangered white sturgeon to move up into spawning areas on the Kootenai River downstream in Idaho and British Columbia began last week, the U.S. Army Corps of Engineers announced.
The Wild Fish Conservancy filed a lawsuit this month in U.S. District Court in Washington D.C. in an effort to speed up NOAA Fisheries’ review of the Washington-based conservation group’s proposal to list Chinook salmon in Alaska under the federal Endangered Species Act.
Public comments are open until June 6 on whether and how the U.S. Army Corps of Engineers should implement a deeper fall drawdown at its Detroit Reservoir as well as whether the agency should permanently end hydropower production at eight dams in Oregon’s Willamette River basin.
Due to a drier and warmer than normal April, the water supply forecasts for May-September for the Columbia and Snake river basins have dropped, according to NOAA’s Northwest River Forecast Center’s last water supply briefing of the season held online this month.
Growing communities and extensive agriculture throughout the Western United States rely on meltwater that spills out of snow-capped mountains every spring. The models for predicting the amount of this streamflow available each year have long assumed that a small fraction of snowmelt each year enters shallow soil, with the remainder rapidly exiting in rivers and creeks.
President Donald Trump, in an April proposed rule, has directed the Secretary of Commerce, NOAA Fisheries and the U.S. Fish and Wildlife Service to rescind the long-standing definition of “harm” to species covered by the federal Endangered Species Act. The existing definition of harm as the ESA is currently written, the Administration says, is contrary to the “best meaning” of the term “take.”
Spring spill at Columbia/Snake River dams to aid juvenile salmon and steelhead in their migration through the hydro projects and out to the ocean is in full motion with all of the lower eight dams on the two rivers initiating full spill by April 10.
Warmer temperatures with some snowmelt and near- or wetter-than-normal precipitation in much of the Columbia River basin in March led to some early runoff but overall resulted in higher April-Sept. water supply forecasts and a better outlook for stream flows in the basin that will aid juvenile and adult salmon and steelhead migrations this summer, according to a NOAA water supply briefing last week.
Scoping meetings to explore possible changes to the 2020 Columbia River salmon/steelhead environmental impact statement have been delayed again.
The U.S. has paused negotiations with British Columbia on a modernized Columbia River Treaty that was nearly complete after both the U.S. and Canada reached an Agreement in Principle in 2024.
Recreational harvest of eulachon smelt on Oregon’s Sandy River took place Thursday, March 27 from noon to 7 p.m.
A recent study brings to light the dangers of a little-known life stage in which spring Chinook salmon in the Columbia River basin generally incur high mortality – incubation in the gravel.
Tribal and Washington fishery managers are doubling down on recovering threatened spring Chinook salmon in the Tucannon River in Eastern Washington by raising juveniles originating from the river at a hatchery 300 miles downstream.
The U.S. Army Corps of Engineers is in the process of revamping the dam’s northern-most fish ladder near the Washington shore at a cost of some $8 million. According to the Corps, the project is changing out a portion of the fish ladder, which spans 800 feet from top to bottom, that was originally a serpentine passage of concrete walls, called baffles, with a newer baffle design more friendly to lamprey.
New research shows that wild birds can account for much of the avian influenza virus evidence found in wastewater in Oregon, suggesting wastewater detections of the virus do not automatically signal human, poultry or dairy cattle cases of bird flu.
Salmon are swimming again in California’s North Yuba River for the first time in close to a century. The fish are part of an innovative pilot project to study the feasibility of returning spring-run Chinook salmon to their historical spawning and rearing habitat in the mountains of Sierra County.
The California Department of Fish and Wildlife reports that the state currently has seven known wolf families amid changing pack dynamics and areas of new wolf activity. California now has around 50 known wolves, according to the state wolf coordinator — up from around 49 at the end of 2023. That modest increase comes despite…
As climate change accelerates, mature forests may struggle to survive. A recent study reveals that older trees retain a ‘memory’ of past water conditions, making it harder for them to adapt to drier environments.
The Columbia-Snake River System, a critical trade corridor supporting $24 billion in commerce annually, will pause operations for two weeks beginning March 9, as the U.S. Army Corps of Engineers, Portland District, conducts its annual navigation lock maintenance.
The Washington Department of Ecology is hosting a public meeting March 17 to discuss how it will implement a long-awaited Total Maximum Daily Load plan for temperature in the Columbia and lower Snake rivers. The two rivers are included in Washington’s 303(d) list of impaired bodies of water due to their persistent high water temperatures…
The U.S. Army Corps of Engineers is still determining “how to proceed” in implementing actions directed by the 2024 Water Resources Development Act and a new jeopardy biological opinion for its 13 Willamette River projects completed by NOAA Fisheries Dec. 26. The Corps says that it still needs funds from Congress that it could get…
Local and national conservation groups have sued the U.S. Forest Service to challenge its approval of the Stibnite Gold Project, an open-pit cyanide leach gold mine in Idaho’s Salmon River Mountains. The groups say the mine would jeopardize public health and clean water, harm threatened plants and animals, and permanently scar thousands of acres of public land in the headwaters of the South Fork Salmon River.
In a collaborative effort to increase the sustainability of California’s salmon populations, the California Department of Fish and Wildlife has partnered with the Department of Water Resources, as well as ocean and inland fishing groups to continue a pilot project aimed at diversifying salmon hatchery release strategies.
Higher power purchase expenses due to low stream flows and dry winter weather have resulted in the Bonneville Power Administration forecasting agency net revenues of negative $44 million, $114 million below the agency target of $70 million.
The tiny particles that shed from clothing, packaging and other plastic products are winding up in the fish that people eat, according to a new study from Portland State researchers, highlighting a need for technologies and strategies to reduce microfiber pollution entering the environment.
A drier than normal January is contributing to February’s lower Columbia River basin water supply forecasts for the months ahead.
Western Washington’s Olympic Peninsula summer and winter steelhead were found by NOAA Fisheries in November 2024 to be at moderate risk of extinction, but the federal agency has yet to list the fish as threatened or endangered under the federal Endangered Species Act, according to a new complaint filed Jan. 17 in federal court by The Conservation Angler and the Wild Fish Conservancy.
Although the snowpack in the western and southern portions of the Columbia River basin are higher than normal, other areas to the north and to the east are near- to lower-than-normal, and, as a result, January water supplies at key dams are being reported as below or slightly below normal.
A federal agency and a state agency have jointly completed a study on the impacts that breaching the four lower Snake River dams would have on water supplies and irrigation.
A record number of threatened chum salmon passed Bonneville Dam late in 2024, with over 1,100 of the salmon passing the dam on their way upstream, the largest passage by chum at the dam since 1954. These are in addition to the chum that spawn annually downstream near the dam’s tailrace and are the subjects of an effort to restore the Columbia River run that at one time was near 1 million fish.
Oregon is becoming warmer and more prone to drought and will see less snow due to climate change, but people and businesses are also adapting to the challenges of a warming planet, the latest Oregon Climate Assessment indicates.
Citing new information and changed circumstances, two federal agencies are reopening this week their 2020 final environmental impact study for operations at 14 Columbia/Snake river federal hydroelectric dams and are now seeking public input. The final EIS guides the dams’ impacts on salmon and steelhead listed under the federal Endangered Species Act.
The average number of salmon and steelhead returning to the Columbia River each year has remained mostly constant over the last twenty years. While today’s returns of the fish have improved dramatically since the 1990s at a time when many of the species were being listed under the federal Endangered Species Act, today’s combined returns are still only half of the 2025 goal of 5 million fish set by the Northwest Power and Conservation Council.
The U.S. Fish and Wildlife Service has published a final recovery plan for the Oregon spotted frog, a threatened species living in the Pacific Northwest. The plan provides a road map to help recover the frog so it can thrive and ultimately be delisted from the Endangered Species Act.
The U.S. Fish and Wildlife Service is opening a 60-day public comment period on a proposed rule to list Suckley’s cuckoo bumble bee as endangered under the Endangered Species Act. This determination also serves as the 12-month finding on a petition to list the bee.
Canada will store several million-acre-feet of water that can be used in 2025 and for the next 20 years to help prevent floods in the Columbia River basin downstream in the United States, according to a virtual briefing earlier this month by federal dam operators on the Columbia River Treaty Agreement in Principle’s flood risk management protections.
NOAA Fisheries has completed 5-year status reviews of the recovery progress and prospects of four salmon and steelhead species in Northern California and Southern Oregon and found that all four should remain threatened under the Endangered Species Act.
The U.S. Fish and Wildlife Service is proposing protection for one of the nation’s most beloved species — the monarch butterfly — and is encouraging the public to be part of its recovery.
The California Department of Fish and Wildlife has seen the first returns of threatened coho salmon to the upper Klamath River Basin in more than 60 years following historic dam removal completed last month.
Washington’s Industrial Stormwater General Permit, which covers nearly 1,200 facilities, has new requirements to ensure cleaner stormwater is flowing into local waterways, and is less harmful to salmon.
The U.S. Fish and Wildlife Service says it is taking two significant steps to support the conservation and recovery of the threatened Canada lynx population in the lower 48 states.
The Center for Biological Diversity has filed petitions with the U.S. Fish and Wildlife Service seeking Endangered Species Act protections for the Owyhee hot springsnail and Owyhee upland pyrg.
Increased spill levels at Snake and Columbia river dams, along with lower water flow in the rivers, hampered the ability of scientists to tag and detect juvenile salmon and steelhead as they migrated downstream in 2024.
In a letter to the Federal Energy Regulatory Commission, the Confederated Tribes and Bands of the Yakama Nation suggest that if a pumped storage project near the Columbia River’s John Day Dam moves forward, the Yakama Nation should receive no less than $40 million in mitigation for damage to tribal resources. The money would be used for the preservation and management of sacred and sensitive properties to the Yakama Nation.
An agreement to study transportation and recreational services that would need mitigation if the four lower Snake River dams were breached to recover the river’s threatened salmon and steelhead was signed early last week by the U.S. Army Corps of Engineers and Washington’s Department of Transportation.
The U.S. Fish and Wildlife Service and conservation partners have announced a groundbreaking achievement in endangered species research: the first-ever birth of black-footed ferrets produced by a cloned endangered animal.
NOAA Fisheries has awarded more than $9.2 million in grants funded by the Inflation Reduction Act to academic partners that will help recover threatened and endangered Pacific salmon.
Climate change is expected to alter Columbia River basin streamflows in the coming years with higher water and more rain but less snowpack in winter, and more drought and lower water in the summer, which could result in less water for summer spill.
When research scientist Gary Longo first saw the results of his genomic analysis of sardines, he thought he must have mixed up his samples.
The world’s freshwater lakes are freezing over for shorter periods of time due to climate change. This shift has major implications for human safety, as well as water quality, biodiversity, and global nutrient cycles, according to a new analysis from an international team of researchers.
Oregon State University researchers have received a $1 million grant to study the impact of adding seaweed to the diets of beef cattle as a way to reduce greenhouse gas emissions.
On October 16, a fall-run Chinook salmon was identified by Oregon Department Fish and Wildlife fish biologists in a tributary to the Klamath River above the former J.C. Boyle Dam, becoming the first anadromous fish to return to the Klamath Basin in Oregon since 1912 when the first of four hydroelectric dams was constructed, blocking migration.
Pacific salmon are in decline across British Columbia and the Yukon, according to a new report from the Pacific Salmon Foundation. More than 70 per cent of salmon are below their long-term average of the 41 combinations of regions and species assessed.
There are more salmon in the North Pacific Ocean than at any time in the past 100 years, according to a study released this month. The increase is due to changes in the marine ecosystems caused by warming seas — changes that mostly benefit pink salmon, industrial-scale hatchery production, and commercial fishing.
An international coalition led by Oregon State University scientists concludes in its annual report published this month that the Earth’s worsening vital signs indicate a “critical and unpredictable new phase of the climate crisis” and that “decisive action is needed, and fast.”
NOAA Fisheries is asking the public to weigh in on alternatives on how to fund a controversial hatchery-driven prey increase program that it says would provide 4- to 5-percent more Chinook salmon in Puget Sound for endangered Orcas.
All four lower Klamath River hydropower dams have been removed. Kiewit, the dam removal contractor hired by the Klamath River Renewal Corporation to complete the construction elements of the project, finished all work this month in the river.
In a recent review, a panel of scientists said the Northwest Power and Conservation Council’s Fish and Wildlife Program for the Columbia River basin is still changing and progressing after 40 years of implementation, but will need further updates and improvements, including a better strategy for incorporating climate change into the Program and a more comprehensive analysis of the outcome of removing the four lower Snake River dams.
Deep drawdowns at Green Peter and Lookout Point reservoirs to improve juvenile Chinook salmon and steelhead fish passage on the Willamette River will be explained at virtual public information sessions sponsored by the U.S. Army Corp of Engineers.
In a Columbia River Treaty “Agreement in Principle” with the United States, Canada will set aside 4-million-acre-feet of water each year that in the past has been used for power production. This water stored behind Canadian dams instead will be used to promote ecosystem functions and socio-economic and cultural values of British Columbia and its First Nations, according to an information session by B.C. Treaty negotiators last week.
The U.S. Fish and Wildlife Service has released a five-year status review for the marbled murrelet, a species of seabird that is listed as threatened under the Endangered Species Act from the Canadian border to central California.
Some of the butterflies most in danger of fluttering out of existence fare better when their habitats are actively managed by humans, a recent study found.
The hydropower industry has filed a lawsuit in U.S. district court that challenges administrative changes to the federal Endangered Species Act made by Biden Administration agencies this spring that the industry says were made in “excess of the Services’ statutory jurisdiction and authority.”
The California Department of Fish and Wildlife has released the “Klamath River Anadromous Fishery Reintroduction and Restoration Monitoring Plan,” a 60-page blueprint to guide the reintroduction and monitoring of Chinook salmon, coho salmon, steelhead and Pacific lamprey in a newly undammed Klamath River.
Removing the Elwha and Glines Canyon dams on Washington’s Elwha River presented an opportunity to study the ecological response of a river ecosystem to large-scale disturbance and subsequent restoration.
New research led by the University of Washington and the National Oceanic and Atmospheric Administration has revealed how underwater noise produced by humans may help explain the southern residents orcas’ plight.
Washington Department of Fish and Wildlife and research partners documented white-nose syndrome and the fungus that causes white-nose syndrome in eleven new counties in 2024.
As juvenile salmon and steelhead in the Columbia River basin migrate downstream to the ocean – mostly in the spring and summer – they run a gauntlet of avian predators. Birds are taking as much as 50 percent of these fish, with juvenile steelhead the hardest hit.
The Washington Department of Ecology has developed changes to the state’s aquatic life toxics criteria the agency says are based on updated science and new research, new methods and modeling tools, and recommendations from the U.S. Environmental Protection Agency and Tribal governments.
The North Santiam River is a high priority for the recovery of threatened Upper Willamette River spring Chinook and winter steelhead. Large dams upriver impaired natural stream processes, decimating fish populations. Development, shoreline armoring, and the disconnection of floodplains from the river damaged habitat key for salmon spawning and rearing juvenile fish.
The Department of the Interior announced this week the establishment of the Willamette Valley Conservation Area in Oregon as the 572nd unit of the U.S. Fish and Wildlife Service-managed National Wildlife Refuge System.
The Center for Biological Diversity this week petitioned the U.S. Fish and Wildlife Service to protect the banded juga — an imperiled freshwater snail in Oregon’s Deschutes River — under the Endangered Species Act.
Idaho Fish and Game researchers have developed a new genetics-based method of estimating the state’s wolf population. The method uses genetic and age information taken from every harvested wolf checked by Fish and Game.
The Washington Fish and Wildlife Commission last week voted 8-1 to approve amended cougar hunting rules. Spurred by a petition from wildlife conservation organizations, the new rules aim to avoid cougar overexploitation.
A pilot project proposed in Port Angeles, Washington is designed to test whether seawater can be used to soak up more carbon dioxide from the air. It is a first-of-its-kind pilot project that has the potential to remove carbon dioxide from marine waters.
Northern California steelhead require continued protection as a threatened species under the federal Endangered Species Act, according to a recent 5-year review by NOAA Fisheries.
Humans drove wolves to extinction in Washington state around the 1930s. Thanks to conservation efforts, by about 80 years later, wolves had returned
During recent periods of unusually warm water in the Gulf of Alaska, young Pacific cod in near shore safe havens where they typically spend their adolescence did not experience the protective effects those areas typically provide, a new Oregon State University study found.
The reservoir behind central Idaho’s Dworshak Dam is full (1,600-foot elevation), air temperatures in the lower Snake River basin are warming into the 100’s over the July 4 weekend and beyond, and tailwater temperature at Lower Granite Dam is warming towards 68 degrees Fahrenheit, the maximum allowed by NOAA Fisheries’ biological opinion on impacts of the federal hydroelectric system on salmon and steelhead.
For the fourth year in a row, the Washington Department of Fish and Wildlife issued an emergency rule requiring commercial whale-watching vessels to stay at least one-half nautical mile away from vulnerable Southern Resident killer whales (SRKW) this summer.
Gray whales that spend their summers feeding in the shallow waters off the Pacific Northwest coast have undergone a significant decline in body length since around the year 2000, a new Oregon State University study found.
Conservation organizations have submitted comments blasting the U.S. Bureau of Land Management’s draft amendment for 77 land-use plans across the western United States intended to protect the imperiled greater sage grouse.
A new research project led by the University of Montana’s Flathead Lake Biological Station expands the impact of the station’s renowned expertise from mountain watersheds to ocean depths.
New research has connected warming ocean temperatures to higher Pacific salmon abundance in the Canadian Arctic, an indicator that climate change is creating new corridors for the fish to expand their range.
The U.S. Fish and Wildlife Service is designating 1.2 million acres of critical habitat in northwestern California and southwestern Oregon for the coastal distinct population segment of the Pacific marten, also known as the coastal or Humboldt marten.
A 15-year period ending in 2020 that included a marine heat wave and a sea star wasting disease epidemic saw major changes in the groups of organisms that live along the rocky shores of the Pacific Northwest.
Artificial intelligence analysis of data gathered by acoustic recording devices is a promising new tool for monitoring the marbled murrelet and other secretive, hard-to-study species, research by Oregon State University and the U.S. Forest Service has shown.
A parasitic worm that can infest the brains of moose appears to be playing a role in the decline of the iconic animal in some regions of North America.
Washington’s wolf population grew for the 15th consecutive year in 2023, according to the Washington Gray Wolf Conservation and Management 2023 Annual Report released by the Washington Department of Fish and Wildlife.
The minimum known count of wolves in Oregon at the end of 2023 was 178 wolves, according to the Oregon Wolf Conservation and Management annual report released this week by the Oregon Department of Fish and Wildlife. This is the same number documented in 2022 and does not include 10 wolves translocated to Colorado in 2023 to help establish a wolf population there.
As states and tribes begin trapping and euthanizing sea lions in the Columbia River near Bonneville Dam this week, the U.S. Army Corps of Engineers released its 2023 report on last year’s pinniped abundance and predation of salmon and steelhead. The report covers the period July 2022 through May 2023 and shows that the 104 sea lions observed during the 2023 reporting period is the highest since 2018, when the number was 134.
The U.S. Army Corps of Engineers says that a report by a new group that recently asserted the four lower Snake River dams are a major source of greenhouse gases, particularly methane gas, largely used emission figures from dams and reservoirs outside of the Columbia and Snake river basins.
The National Park Service and U.S. Fish and Wildlife Service have published a final Environmental Impact Statement that identifies the preferred alternative to reintroduce grizzly bear into the North Cascades Grizzly Bear Recovery Zone, including North Cascades National Park.
Walleye, an invasive species with a reputation for a voracious appetite, has moved down the Columbia River from Lake Roosevelt and are now being counted in increasing numbers upstream of Lower Granite Dam on the Snake River, according to a report by the Idaho Department of Fish and Game.
Snowpack this winter continues to be at an all-time low across several river basins in western Montana, indicating that this year could see water shortages, according to recent projections from the Montana Climate Office.
urvival of Columbia River basin salmon and steelhead is poor – in most cases less than 2 percent smolt to adult returns – compared to a Northwest Power and Conservation SARs goal of 6 percent, according to a presentation at the Council’s March meeting.
The California Current ecosystem is a vital ocean system stretching from Washington to Baja California. It is facing a strong 2024 El Niño event, a cyclical warming of the Pacific Ocean. However, the latest information from NOAA’s Integrated Ecosystem Assessment program suggests the ecosystem is better positioned to weather these changing conditions than previous El Niño events.
Marine heat waves in the northeast Pacific Ocean create ongoing and complex disruptions of the ocean food web that may benefit some species but threaten the future of many others, a new study has shown.
Low oxygen conditions that pose a significant threat to marine life are widespread and increasing in coastal Pacific Northwest ocean waters as the climate warms, a new study shows.
The cold water rivers of Western Washington hold some of the last, best freshwater habitat for salmon and steelhead in the lower 48 states, and despite a warming climate, their high-elevation headwaters are predicted to remain cool enough for salmon and steelhead for at least the next 50 years.
Oregon State University researchers are leading an effort to refine the design and expand use of oxygen monitoring sensors that can be deployed in fishing pots to relay critical information on changing ocean conditions to the fishing industry.
Walleye are one of the most sought-after species in freshwater sportfishing, a delicacy on Midwestern menus and a critically important part of the culture of many Indigenous communities. They are also struggling to survive in the warming waters of the midwestern United States and Canada.
The Oregon Fish and Wildlife Commission has voted unanimously to list Southern Resident orcas as endangered under Oregon’s Endangered Species Act. Southern Resident orcas now number just 75 whales in three pods and have been listed as endangered under federal law since 2005.
A new NOAA Fisheries study examined how climate change might affect commercial fishing fleets on the U.S. West Coast, assessing the risk to different bottom trawl groundfish fishing fleets in California, Oregon, and Washington.
Though agencies and partners have pulled together to support the recovery of endangered Sacramento winter-run Chinook salmon in the last few years, NOAA Fisheries says the species is still in trouble, facing threats from climate change and other factors.
Montana Fish, Wildlife & Parks has notified the U.S. Fish and Wildlife Service of its intent to pursue legal action over the recent listing of wolverines as a threatened species.
Marine heat waves appear to trigger earlier reproduction, high mortality in early life stages and fewer surviving juvenile Pacific cod in the Gulf of Alaska, a new study from Oregon State University shows.
In a study that could help reshape understanding and management of water resources in the Western United States, David Ketchum, a 2023 graduate of the University of Montana systems ecology Ph.D. program, has unveiled a 35-year analysis quantifying the interconnected impacts of climate change and irrigation on surface water flows.
Montanans have varying attitudes and beliefs about wolves and wolf management, and over time some of those feelings have shifted, according to a new survey conducted cooperatively by Montana Fish, Wildlife & Parks and the University of Montana.
Washington Gov. Jay Inslee last week directed the Washington Fish and Wildlife Commission to draft new rules to guide when wolves can be killed for conflict with livestock and prioritize using nonlethal methods of conflict deterrence over killing wolves.
Toxic chemicals produced from oil emissions and wildfire smoke have been found in muscle and liver samples from Southern Resident killer whales and Bigg’s killer whales.
Forests on the west slope of Oregon’s Cascade Range experienced fire much more often between 1500 and 1895 than had been previously thought, according to new research by scientists at Oregon State University.
NOAA’s 2023 Arctic Report Card documents new records showing that human-caused warming of the air, ocean and land is affecting people, ecosystems and communities across the Arctic region, which is heating up faster than any other part of the world.
Two new research studies describe the increasing accuracy of specialized scientific models in forecasting changes in the ocean up to a year in advance.
North America’s 2021 heat wave was Washington’s deadliest weather-related disaster, claiming over 100 lives in the evergreen state and many others in neighboring regions. Scientists not only suggest that such heat waves will grow more intense and strike more often—in new work, they reveal the underlying mechanism behind these strengthened heat waves.
Even in the precipitation-heavy Pacific Northwest, more frequent heatwaves are threatening a key source of water supply.
The U.S. Fish and Wildlife Service has announced its final rule to list the distinct population segment of the North American wolverine in the contiguous U.S. as a threatened species under the Endangered Species Act.
Conservation groups this week filed an appeal asking Washington Gov. Jay Inslee to order the Washington Fish and Wildlife Commission to draft enforceable rules that limit when the state can kill endangered wolves for conflicts with livestock.
The thousands of double-crested cormorants nesting on the 5-mile-long Astoria-Megler Bridge in the Columbia River estuary that are damaging the bridge, causing safety problems and eating more salmon and steelhead smolts must go, according to a value engineering study led by the Oregon Department of Transportation.
The Fifth National Climate Assessment (NCA5) released this week finds that the impacts of weather extremes — exacerbated by climate change — are far-reaching across every region of the United States. And it indicates a warming future threatens Northwest salmon recovery.
In support of a statewide voter-led initiative passed in November 2020, the U.S. Fish and Wildlife Service has finalized the designation of an experimental population of gray wolves in Colorado under the Endangered Species Act. This action provides management flexibility in support of the state of Colorado’s voter-mandated gray wolf reintroduction program.
The U.S. Fish and Wildlife Service is seeking public input on a draft environmental impact statement and draft Barred Owl Management Strategy that addresses the threat of the non-native and invasive barred owls to native northern and California spotted owls.
Firsthand observations of a wolf hunting and killing a harbor seal and a group of wolves hunting and consuming a sea otter on Alaska’s Katmai coast have led scientists to reconsider assumptions about wolf hunting behavior.
An international coalition of climate scientists says in a paper published this week that the Earth’s vital signs have worsened beyond anything humans have yet seen, to the point that life on the planet is imperiled.
The U.S. Fish and Wildlife Service and National Park Service have released a draft plan analyzing options to restore grizzly bears to the North Cascades in Washington.
A new report from Pacific Northwest National Laboratory shows that along a 200-mile stretch of ocean off the coast of southern Oregon and northern California, floating wind farms could potentially triple the Pacific Northwest’s wind power capacity while offsetting potentially billions of dollars in costs for utilities, ratepayers, insurance companies, and others across the West who bear the cost of climate change’s effects.
In a one-year agreement announced between Colorado Parks and Wildlife and Oregon Department of Fish and Wildlife, Oregon will be a source for up to 10 wolves for the Colorado gray wolf reintroduction effort. These wolves will be captured and translocated between December 2023 and March 2024.
The Center for Biological Diversity filed a formal notice this week of its intent to sue the U.S. Fish and Wildlife Service for failing to protect four imperiled bee species, including American bumblebees, under the Endangered Species Act. Southern Plains bumblebees, variable cuckoo bumblebees and blue calamintha bees are also included in today’s filing.
The Western United States is losing its glaciers. A new inventory from Portland State University researchers shows that some glaciers have disappeared entirely, some no longer show movement, some are too small to meet the 0.01 square kilometer minimum and some are actually rock glaciers — rocky debris with ice in the pore spaces.
With climate change, some spawning habitat in British Columbia could actually expand, peaking in area around 2060, according to a recent study that looked at current stream habitat and projected future favorable spawning habitat as the climate warms.
Researchers who study water resources want to know how much snow an area will get in a season. The total snowpack gives scientists a better idea of how much water will be available for hydropower, irrigation and drinking later in the year.
New research has found that marine heat waves – prolonged periods of unusually warm ocean temperatures – haven’t had a lasting effect on the fish communities that feed most of the world.
New research from the University of Washington and Polar Bears International in Bozeman, Montana, quantifies the relationship between greenhouse gas emissions and the survival of polar bear populations.
Responding to a recent District Court order, NOAA Fisheries has opened a review of its prey increase program specifically designed to provide more food for endangered Southern Resident killer whales in Puget Sound. NOAA is seeking written and verbal feedback from the public as it develops an Environmental Impact Statement for the program.
Idaho Fish and Game has received more verified reports and pictures from people catching walleye in the Hells Canyon reach of the Snake River and Salmon River in 2023 than in all previous years.
Shifting ocean conditions associated with climate change will likely send high-value sablefish into deeper waters off the West Coast, new research shows. That could make the fish tougher to catch and force fishing crews to follow them or shift to other, more accessible species.
A growing American white pelican population on an island in the mid-Columbia River basin could be a new threat to salmon and steelhead. The large white birds not only scoop out batches of juvenile fish, they also have been known to eat adult salmon, including sockeye salmon and other fish as large as 29 inches.
Almost twice as many gray whale calves swam north with their mothers to their Arctic feeding grounds this spring compared to last year, according to a new count completed by NOAA Fisheries’ Southwest Fisheries Science Center.
A study examining protected birds found dead along power lines on public lands in the western U.S. shows that gunshot deaths were three times more common than deaths from other causes.
The next step in Oregon State University’s construction of a wave energy testing facility off the Oregon Coast is visible to residents and visitors to the area this month.
Four conservation groups notified the U.S. Army Corps of Engineers that they intend to sue the agency over the heat pollution created by the four lower Snake River dams. The groups allege the dams overheat the river’s water and those conditions are killing or injuring Snake River sockeye salmon listed as endangered under the federal Endangered Species Act.
Climate change has led to earlier spring blooms for wildflowers and ocean plankton but the impacts on salmon migration are more complicated, according to new research.
When drought-stricken rivers and reservoirs run low across the American West, hydropower dries up and utilities fire up hundreds of power plants that burn coal, oil, or natural gas to keep up with demand for electricity. The timing couldn’t be worse, as accompanying heat waves drive up energy use, often to power air conditioners.
Since 1980, fires have gotten significantly larger and more severe across California and the western United States, vastly increasing the amount of destruction they cause.
Alaska is warming faster than any other state. Pumped storage hydropower has the potential to integrate more wind and solar into the energy grid to reduce the carbon dioxide emissions driving climate change in the state.
A recent study has revealed that climate change has had a profound impact on the Colorado River Basin between the years 2000 and 2021. The study shows that over this period, more than 40 trillion liters (10 trillion gallons) of water were lost due to climate change effects, which is roughly equivalent to the entire storage capacity of Lake Mead.
Rates of Chinook salmon bycatch in the Pacific hake fishery rise during years when ocean temperatures are warmer, a signal that climate change and increased frequency of marine heatwaves could lead to higher bycatch rates, new research indicates.
As scientists around the world sound the alarm about record sea surface temperatures, a new experimental NOAA forecast system predicts that half of the global ocean may experience marine heatwave conditions by the end of summer.
New research led by the University of Washington uses data collected by coastal residents along beaches from central California to Alaska to understand how seabirds have fared in recent decades. The paper shows that persistent marine heat waves lead to massive seabird die-offs months later.
A new count of gray whales that migrate along the West Coast each year found a continued decline of this population. However, new clues suggest that population numbers may soon start to rebound.
A new study of North American songbirds finds that birds can’t keep up with the earlier arrival of spring caused by climate change. As a result, they’re raising fewer young.
For the second year in a row, wolf numbers in Montana did again fall slightly in 2022, according to the 2022 Montana Fish, Wildlife & Parks Wolf Report.
As the world warms, extreme weather events grow – and they also change. Researchers at the Department of Energy’s Lawrence Berkeley National Laboratory found that climate change is shifting snowfall to rainfall on mountains across the Northern Hemisphere. Those surges of liquid water bring a distinct set of dangers, including floods, landslides, and soil erosion.
In a recently published study, scientists investigating the endangered southern resident killer whales have made a noteworthy observation: the prevalence of skin disease within this population has shown a significant increase.
A three-year-old hatchery production program spread across Puget Sound and the Columbia and Snake rivers, designed specifically to provide more food for Southern Resident killer whales should remain in place, according to NOAA Fisheries in its most recent declaration in federal court.
In a January letter, the Northwest Power and Conservation Council invited Oregon and Washington transportation agencies to meet jointly to discuss their mutual problem of double-crested cormorants on the Astoria-Megler Bridge that spans the Columbia River estuary at Astoria, OR.
n the quarter century between 1996 and 2020, wildfires in California consumed five times more area than they did from 1971 to 1995. Researchers at the University of California and other international institutions have concluded that nearly all of the increase in scorched terrain can be blamed on human-caused climate change.
Wildfires have become increasingly frequent due to climate change, with record occurrences in areas not historically prone to them. In California, wildfires and regional power shutoffs have cost billions and taken lives. For some 46 million Americans living next to forests – at what scientists call the “wildland-urban interface” (WUI) – the risks of wildfire can be especially acute.
The breeding season for avian predators, March–August, overlaps with the peak out-migration of juvenile salmon and steelhead, April — August, according to a recent survey of literature that looked specifically at peer-reviewed studies of Caspian terns, double-crested cormorants and gulls that prey on salmonids in the Columbia River basin.
In early 2014, a great anomaly descended upon the seas: A patch of warm water that manifested in the Gulf of Alaska. Scientists called it “The Blob.”
As the ocean warms, marine fish are on the move—beyond their traditional habitats and across international boundaries. Understanding these patterns of movement is essential to predicting change and managing climate-resilient fisheries.
Grizzly bears in the Greater Yellowstone Ecosystem have been able to gain the body fat they need for hibernation even as population densities have increased and as climate change and human impacts have changed the availability of some foods, according to a new study by the U.S. Geological Survey and its partners.
Since their protection under the Endangered Species Act, wolf populations have been making a comeback in the continental United States. Conservationists have argued that the presence of wolves and other apex predators, so named because they have no known predators aside from people, can help keep smaller predator species in check.
The Center for Biological Diversity and Pacific Rivers have filed a petition to list Washington coast spring Chinook salmon under the federal Endangered Species Act.
Washington Gov. Jay Inslee has signed new legislation to create a mandatory 1,000-yard vessel buffer around Southern Resident killer whales to protect the endangered population from vessel noise and disturbance. The expanded buffer requirement goes into effect January 2025.
A team of Oregon State University researchers is leading a three-year effort to learn more about climate fluctuations in Olympic Coast National Marine Sanctuary using more than 20 years of oceanographic data.
A legislative bill sitting on Oregon Gov. Tina Kotek’s desk waiting for signature would give Oregon more flexibility in managing predatory non-native game fish species –such as bass and walleye — that consume salmon and steelhead smolts in the Columbia River basin.
About 200 sea lions were counted last week in the Columbia River between the I-205 Bridge and Bonneville Dam, a 36-mile stretch of river, spurring states and tribes to begin trapping and euthanizing the pinnipeds at Bonneville Dam.
A bill to create a 1,000-yard buffer around the critically endangered Southern Resident orcas is headed to Washington Gov. Jay Inslee’s desk for his signature after clearing a final legislative hurdle this week. Senate Bill 5371 requires that boaters stay 1,000 yards away from Southern Residents, beginning in 2025.
The minimum known count of wolves in Oregon at the end of 2022 was 178 wolves, an increase of three wolves over the 2021 minimum known number of 175, according to the Oregon Wolf Conservation and Management annual report released today.
The amount of sediment carried by Columbia River waters to the Pacific Ocean has declined by about half since Bonneville Dam was built in 1935. Much of the sediment no longer moved by the river has found a home at the mouths of tributaries, creating shallow sediment fans or deltas where warm water and predators impact juvenile salmon and steelhead, some listed under the federal Endangered Species Act.
The Washington Gray Wolf Conservation and Management 2022 Annual Report released by the Washington Department of Fish and Wildlife shows a 5% increase in wolf population growth from the previous count in 2021. WDFW also documented Washington’s first pack to recolonize the south Cascades this winter.
Deteriorating habitat conditions caused by climate change are wreaking havoc with the timing of bird migration.
A massive 2,000 page draft environmental impact statement on how Willamette River Valley dams impact threatened salmon, steelhead and bull trout is flawed and does not address one of its own primary goals, which is meeting obligations under the Endangered Species Act to avoid jeopardizing the existence of listed species, according to several groups and agencies that submitted comments to the U.S. Army Corps of Engineers in late February.
The small size and isolation of the endangered population of Southern Resident killer whales in the Pacific Northwest have led to high levels of inbreeding. This inbreeding has contributed to their decline, which has continued as surrounding killer whale populations expand, according to research published in Nature Ecology and Evolution.
Bald Eagles and dairy farmers exist in a mutually beneficial relationship in parts of northwestern Washington State. According to a new study, this “win-win” relationship has been a more recent development, driven by the impact of climate change on eagles’ traditional winter diet of salmon carcasses, as well as by increased eagle abundance following decades of conservation efforts.
Good years in the Pacific Ocean for salmon and steelhead, as the last couple of years have been, are an anomaly. Instead, ocean conditions are generally trending downward, according to a NOAA Fisheries scientist briefing the Northwest Power and Conservation Council.
In the Pacific Northwest and British Columbia, scientists have been sounding the alarm about the plight of southern resident orcas. Annual counts show that population numbers, already precarious, have fallen back to mid-1970s levels.
Ecological relationships across the Pacific Coast that once guided annual expectations such as salmon returns are evolving as climate change disrupts long-standing connections. NOAA Fisheries researchers report these findings in their latest Ecosystem Status Report for the California Current Ecosystem.
A federal court this week ruled in favor of the Center for Biological Diversity in a lawsuit arguing that the National Marine Fisheries Service failed to protect endangered Pacific humpback whales from deadly entanglements in sablefish pot gear off California, Oregon and Washington.
By returning to spawn in the Sacramento River at different ages, Chinook salmon lessen the potential impact of a bad year and increase the stability of their population in the face of climate variability, according to a new study by scientists at UC Santa Cruz and NOAA Fisheries.
The U.S. Fish and Wildlife Service has announced the availability of a draft recovery plan for the Oregon spotted frog, which has lost most of its habitat from southern British Columbia, through the Cascades, and into southern Oregon.
An international collaboration led by Oregon State University scientists has identified 27 global warming accelerators known as amplifying feedback loops, including some that the researchers say may not be fully accounted for in climate models.
Glacier National Park is home to around 50 Canada lynx, more than expected, surprising scientists who recently conducted the first parkwide occupancy survey for the North American cat.
New research examines how Chinook salmon from West Coast rivers travel through the ocean. It shows that endangered Southern Resident killer whales do not have access to as many salmon prey as previously thought.
NOAA Fisheries says it will consider listing Olympic Peninsula summer and winter steelhead threatened or endangered under the federal Endangered Species Act. All populations of steelhead on the peninsula have continued to decline since 2017.
The U.S. Fish and Wildlife Service has completed the initial review of three petitions filed to remove the grizzly bear in the lower 48 States from the list of endangered and threatened wildlife under the Endangered Species Act in certain ecosystems. The Service says two of these petitions present substantial information indicating the grizzly bears in the Northern Continental Divide Ecosystem and the Greater Yellowstone Ecosystem may qualify as their own distinct population segment and may warrant removal from the ESA list.
For an animal whose population barely tops 2,000, Montana’s grizzly bears hold an outsized presence in the psyche and politics of the Treasure State.
A new report recently released by the Washington Department of Fish and Wildlife calls for new strategies and policy tools to address consequences of increasing human demand for water and the effects of climate change on Washington’s rivers, streams and salmon.
Raising sons is an exhausting experience that leaves killer whale mothers far less likely to produce more offspring, new research shows.
Oregon and Washington fishery agencies announced they will not propose commercial or recreational white sturgeon fishing this year downstream of Bonneville Dam due to a projected low abundance of legal-sized fish, according to a joint status report released this week by the states.
Sea lions continue taking a big bite out of spring fish runs at Bonneville Dam. More than 8 percent of winter steelhead and more than 3 percent of spring Chinook salmon were picked off by Steller and California sea lions that prey on the fish below the dam, according to a draft report by the U.S. Army Corps of Engineers.
Idaho’s 2022 population estimate of 1,337 wolves declined by about 13%, or 206 wolves, compared with the 2021 estimate based on cameras surveys that measure the population during summer near its annual peak.
In partnership with the Washington Department of Fish and Wildlife, the U.S. Army Corps of Engineers is looking for public feedback on a draft report studying proposed next steps to restore flows for fish in the Yakima River delta.
From late Dec. 2022 into Jan. 2023, a series of nine “atmospheric rivers” dumped a record amount of rain and mountain snow across the western U.S. and Canada, hitting California particularly hard. More than 32 trillion gallons of water rained down across the state alone, and the moisture also pushed into much of the Intermountain West.
The Northwest Power and Conservation Council has asked the owner of the Astoria-Megler Bridge in Astoria to meet with them to talk about the double-crested cormorant problem in the Columbia River estuary.
Wolves on an Alaskan island caused a deer population to plummet and switched to primarily eating sea otters in just a few years, a finding scientists at Oregon State University and the Alaska Department of Fish and Game believe is the first case of sea otters becoming the primary food source for a land-based predator.
The western bumble bee was once common in western North America, but increasing temperatures, drought, and pesticide use have contributed to a 57% decline in the occurrence of this species in its historical range, according to a new U.S. Geological Survey-led study.
Snow-capped mountains aren’t just scenic – they also provide natural water storage by creating reservoirs of frozen water that slowly melt into watersheds throughout the spring and summer months. Much of the Western U.S. relies on this process to renew and sustain freshwater supplies, and new research underscores the impacts of extreme weather conditions on this annual cycle.
There is a “preponderance” of evidence that sea lions and seals (pinnipeds) in Washington’s Salish Sea and outer coast have contributed to the decline of salmon and steelhead in state waters, concludes a recent report by the Washington State Academy of Sciences.
New research shows that the wettest and most extreme winter storms in the Western United States are only growing wetter and larger. These powerful storms are changing shape in a warmer world, sprawling to drench more land while simultaneously growing more intense at their cores.
The Center for Biological Diversity submitted a petition this week asking the U.S. Fish and Wildlife Service to reintroduce sea otters to a large stretch of the West Coast. Threatened southern sea otters occupy only 13% of their historic range, and a small population of the animals currently lives on California’s central coast.
Climate projections reported by ExxonMobil scientists between 1977 and 2003 were accurate and skillful in predicting subsequent global warming and contradicted the company’s public claims, a new Harvard study shows.
The U.S. Fish and Wildlife Service this week announced the completion and publication of the final recovery plan for the Meltwater Lednian stonefly and Western Glacier stonefly.
Douglas-fir trees will likely experience more stress from drier air as the climate changes than they will from less rain, computer modeling by Oregon State University scientists shows.
A chemical used in the production of toilet paper and ‘forever chemicals’ have been found in the bodies of orcas in British Columbia, including the endangered southern resident killer whales.
Researchers project that most glaciers in western Canada will be gone in 80 years.
More than a century of preserved fish specimens offer a rare glimpse into long-term trends in parasite populations. New research from the University of Washington shows that fish parasites plummeted from 1880 to 2019, a 140-year stretch when Puget Sound — their habitat and the second-largest estuary in the mainland U.S. — warmed significantly.
Oregon continues to face new and enduring hazards related to climate change, but opportunities for adaptation and mitigation are also expanding, the latest assessment released by the Oregon Climate Change Research Institute indicates.
National parks are the backbone of conservation. Yet mounting evidence shows that many parks are too small to sustain long-term viable populations and maintain essential, large-scale ecological processes, such as large mammal migrations and natural disturbance regimes.
In mid-September 2022, Central Oregon’s Crooked River became the first river in the state to close to recreational angling specifically due to drought-related low flows. It reopened October 31 after six weeks of extremely low water levels that left as much as 50 to 90 percent of the river’s channels dry.
An Earthwise Knowledge Initiative Publication
