Saving Seafood

What is Nearshore Habitat and Why Does it Matter to Orcas?

June 23, 2020 — The following was released by NOAA Fisheries:

There is an especially valuable environment in Puget Sound made up of the beaches, bluffs, inlets, and river deltas: the nearshore. Nearshore habitat matters to Southern Resident killer whales because their primary prey, Chinook salmon, need them to grow and find safety when they are young. Unfortunately, we have been losing these habitats in Puget Sound to industrial and residential development and agriculture.

Southern Resident Killer Whales eat salmon, primarily Chinook salmon. The whales search out and rely upon the ever-changing abundance of many different Chinook salmon runs up and down the Pacific Coast. Puget Sound Chinook salmon are one of the most important of these for the Southern Residents’ recovery. Puget Sound Chinook salmon, however, are themselves threatened with extinction.

Killer whales eat Chinook salmon when the fish have grown into adults three years old and weighing close to 30 pounds. The salmon are headed back from the ocean through Puget Sound to their home rivers to lay their eggs. To make it to adulthood, though, these fish need to survive their adolescence as “juveniles” or “fry.” That’s where the nearshore zone comes in.

Tiny young Chinook salmon emerge from the gravel where they hatched from eggs in the rivers of Puget Sound and the Salish Sea—the Skagit, Elwha, Nisqually, and others. Then the young fish follow one of several different strategies to grow as juveniles before heading out to the ocean. They can rear in the river and freshwater floodplains or head downstream to the great tidal river deltas. They can also head all the way out into Puget Sound looking for safety along the shore in pocket estuaries, kelp and eelgrass beds, coastal creeks, or lagoons.

Read the full release here

Researchers Probe Orca Poop for Microplastics: Part 2

May 21, 2020 — The following was released by NOAA Fisheries:

How do microplastics end up in killer whale feces?

“There are two ways that the whales could ingest microplastics,” says Kim Parsons, Research Geneticist with NOAA Fisheries’ Northwest Fisheries Science Center. “They could incidentally swallow particles in sea water while eating fish, or they could ingest salmon that are themselves contaminated with microplastic particles.”

She suspects that most of the microplastics in orca poop are coming from the whales’ prey. The particles are traveling up the food chain from gut to gut, from herring to salmon to orca.

But why does it matter for orcas if their guts are full of microplastic particles and fibers?

How ingestion of microplastics affects marine mammals is both poorly understood and scientifically controversial. So the answer is, we don’t know yet, but scientists are concerned for the health of organisms at all levels of the marine food chain.

You might own a reusable water bottle advertised as being free of toxic chemical additives like bisphenol A, or BPA. Many chemicals found in microplastics are pollutants, such as polyethylene, polypropylene, phthalates, and BPA and its substitutes. Some of these chemicals are known endocrine disruptors, which means that the chemicals can disrupt an animal’s natural hormones. The chemicals may affect reproduction, growth and development, and ultimately population viability. When microplastics are moving through the whales’ digestive tract, the harmful chemicals could leach into their bodies.

Read the full release here

Researchers Probe Orca Poop for Microplastics: Part 1

May 19, 2020 — The following was released by NOAA Fisheries:

You might worry about your toddler chewing on a plastic toy with toxic chemicals. Some orca researchers are beginning to worry about whales ingesting a gut full of microplastics, and what that might mean for their health.

Microplastics are everywhere. Millions of tons of plastic enter our oceans annually, and much of it breaks into tiny pieces. Microplastics are plastic particles five millimeters (about two-tenths of an inch) or smaller. They represent 92 percent of plastic pieces polluting the oceans’ surface waters. Researchers have found microplastics in all major seas and oceans. They’ve also found them in the intestinal tracts of organisms at all levels of the ocean food chain, from zooplankton to fish to marine mammals.

Some scientists are concerned that microplastics and their toxic effects are bioaccumulating in killer whales, the oceans’ top predators. Endangered Southern Resident killer whales spend much of their summers in Puget Sound and the Salish Sea. Chemical contamination from pollution, particularly in young whales, is one of three primary threats to their population. Could microplastics be part of the problem?

A team of scientists with NOAA Fisheries’ Northwest Fisheries Science Center (Center) and the University of Washington have started an investigation. They are looking at what microplastics the Southern Residents are ingesting, at what scale, and whether the whales are being exposed to toxic chemicals associated with microplastics.

Read the full release here

Feds Looking at Protections for Spring-Run Chinook Salmon in Oregon

April 13, 2020 — A petition seeking to extend federal wildlife protections to spring-run Chinook salmon found along Oregon’s coast has merit and could warrant listing the fish under the Endangered Species Act, the Trump administration said Friday.

The spring-run salmon are the main food source for the Southern Resident killer whales, an endangered population of orca living in the Pacific Northwest.

Chinook salmon populations are also found in Washington state, Idaho and California.

The National Marine Fisheries Service (NMFS) decision came after a 90-day review process and means the Chinook salmon could be listed as threatened or endangered pending an additional one-year in-depth analysis.

After the year-long study, the agency could determine that the salmon — scientific name Oncorhynchus tshawytscha — could be listed as a threatened or endangered Evolutionarily Significant Unit, or ESU, under federal law.

The process will allow scientists, commercial fishing representatives, wildlife advocates and others to submit additional information on impacts stemming from protecting the salmon population and its habitat under the Endangered Species Act.

Read the full story at the Courthouse News Service

PFMC: Ad Hoc Southern Resident Killer Whale Workgroup to hold webinar April 28, 2020

March 20, 2020 — The following was released by the Pacific Fishery Management Council:

The Pacific Fishery Management Council’s (Pacific Council)  Ad Hoc Southern Resident Killer Whale Workgroup (Workgroup) will meet via webinar, and this meeting will be open to the public.  The  webinar meeting will be held on Tuesday, April 28, 2020, from 9 a.m. to 2 p.m. Pacific Daylight Time, or until business for the day has been completed.

Please see the SRKW Workgroup Webinar Notice on the Council’s website for participation details.

For further information:

  • Please contact Pacific Fishery Management Council staff officer Ms. Robin Ehlke  at 503-820-2410; toll-free 1-866-806-7204.

Conservationists Say Salmon Fishing Plan Imperils Whales

March 19, 2020 — The government allowed salmon fishing in Alaska at rates its own reports said will push endangered Southern Resident killer whales closer to extinction, environmental groups claim in a lawsuit filed Wednesday.

Salmon born in the rivers and streams of Oregon, Washington state and British Columbia migrate to the Pacific Ocean and through the Gulf of Alaska, home to a major troll fishing fleet. In southeast Alaska, 97% of the Chinook salmon fishermen harvest were born elsewhere. The fish they take never make it back to their home waters, where they could have been dinner for the 72 remaining Southern Resident killer whales – a genetically distinct group of orca that are starving due to a lack of their main prey.

“It is reckless and irresponsible for NOAA to approve this harvest, these salmon don’t belong to Alaska, they belong to Southern Resident killer whales, indigenous peoples, and fishing communities down the coast,” Kurt Beardslee, Wild Fish Conservancy’s executive director, said Wednesday in a press release.

Read the full story at the Courthouse News Service

Council Urges Reopening of Fishing Grounds Based on New False Killer Whale Study

March 12, 2020 — The following was released by the Western Pacific Regional Fishery Management Council:

A new study indicates that the pelagic stock of false killer whales around the Hawaiian Islands may be healthier than previously thought. Amanda Bradford of NOAA Pacific Islands Fisheries Science Center presented the research yesterday to the Western Pacific Regional Fishery Management Council, which has authority over fisheries in the US exclusive economic zone (EEZ, i.e., generally 3 to 200 miles offshore) of Hawai‘i and other US islands and territories in the Pacific. The Council is meeting this week in Honolulu.

In light of the new population estimates, the Council yesterday asked the National Marine Fisheries Service (NMFS) to explore reopening the Southern Exclusion Zone (SEZ), a 132,000-square-mile area spanning the entire EEZ south of the main Hawaiian Islands. Since 2012, the SEZ is closed to the Hawai‘i longline fishery when it interacts with two pelagic false killer whales that result in a mortality and serious injury determination by NMFS. The closed SEZ leaves only 17.8 percent of the EEZ around the Hawaiian Islands open to the fishery.

When the SEZ was implemented, the estimated population size of pelagic false killer whales allowed a maximum of nine individuals from the stock to be removed by means other than natural mortalities. Above that number could impair the stock’s ability to reach or maintain its optimum sustainable population, it was determined. The new estimates may indicate a need to modify that number.

The Council meeting continues today and tomorrow at the YWCA Fuller Hall, 1040 Richards St., Honolulu, from 8:30 a.m. to 5 p.m. To participate by web conference: Go to https://wprfmc.webex.com/join/info.wpcouncilnoaa.gov. For more information on the meeting, go to www.wpcouncil.org/meetings-calendars, email info@wpcouncil.org or call (808) 522-8220.

Lawsuit targets Alaska salmon management to protect southern killer whales

January 27, 2020 — A conservation organization based in Washington state is threatening to sue the federal government over the management of Alaska’s chinook salmon fisheries.

The Wild Fish Conservancy claims that management strategies in Alaska approved by the government pose a threat to the survival of several salmon runs in Washington, and the killer whales who depend on them.

The Wild Fish Conservancy filed notice on January 9, stating its intentions to sue the National Marine Fisheries Service for violating the Endangered Species Act, and jeopardizing the existence of southern resident killer whales.

The Conservancy argues that an important food supply of the whales — endangered stocks of chinook salmon originating in Puget Sound, the lower Columbia River, the Willamette River, and Snake River — is being depleted by the commercial troll and sport harvest in Southeast Alaska.

Kurt Beardslee is the director of the Wild Fish Conservancy. Chinook — or king salmon — are managed under treaty between the United States and Canada, overseen by the Pacific Salmon Commission.

Read the full story at KNBA

Studies give insight on plight of orca whales

December 30, 2019 — Two studies and a state report released this month build on the efforts to understand what’s impacting the region’s endangered Southern Resident orca whales and what steps could be taken to help save them.

Researchers and wildlife managers have for years suggested that the Southern Resident orcas, which spend several months of the year in the Salish Sea and coastal waters of Washington, are struggling to find large, nutrient-rich chinook salmon to eat.

Studies recently published in the Proceedings of the National Academy of Sciences suggest the Southern Resident orcas are competing with other fish-eating orca populations of the North Pacific Ocean and that orca calves born to families without grandmothers have a lesser chance of finding chinook to eat and surviving to adulthood.

Meanwhile, a draft state report released Dec. 20 concludes it’s not clear whether a move long called for by environment and wildlife groups – to remove dams on the lower Snake River – would significantly boost the number of fish available to the region’s orcas.

Removing four dams on the lower Snake River in southeast Washington, where it curves from the Idaho border toward the Oregon border, could improve conditions in the river system for salmon, according to the report.

Read the full story at The Spokesman-Review

Nearly $670,000 in grants will help endangered orcas

November 21, 2019 — Nearly $670,000 in conservation grants will go toward the recovery of endangered Southern Resident killer whales, also known as orca whales.

The National Fish and Wildlife Foundation and its partners made the announcement at an event Wednesday.

NFWF said the grants will generate $610,600 in matching contributions for a total of more than $1.2 million.

Though the 74 orcas eat salmon and other fish, they prefer Chinook salmon, which recent research showed are having low survival rates in early stages of life.  Because fewer fish are making it to the ocean, there are fewer fish of the size that killer whales need to feed, NFWF said.

NFWF said six grants announced Wednesday will support projects throughout the food chain and help habitat that’s important to both young Chinook and their prey.

In addition to the grants, a public campaign supported by the Killer Whale Recovery and Conservation Program and its partners  – “Be Whale Wise” – will help educate local boaters about how they can better protect orcas.

Read the full story at KIRO