Saving Seafood

Combined threats keep Alaska’s Cook Inlet beluga numbers perilously low, scientists say

February 2, 2023 — The dire state of the endangered Cook Inlet beluga population, which is now below 300 animals and has continued to decline, is blamed on a variety of factors. They include industrial noise, urban pollution, vessel traffic, oil and gas activities, food stress and climate change.

What about all of the above?

And for scientists working on how the beluga population can recover, the sheer range of problems can make it hard to come up with answers.

Scientists are studying several of these threats, and their research was a major focus of the Alaska Marine Science Symposium held last week in Anchorage.

One project maps numerous combined stressors in the endangered belugas’ habitat. The map was created by independent scientist and consultant Mandy Migura for Defenders of Wildlife and in collaboration with other organizations.

Read the full article at Anchorage Daily News

Groups prod feds to act on plan to save Cook Inlet beluga whales

January 24, 2022 — As Cook Inlet beluga whales continue to slide closer to extinction, a coalition of conservation groups petitioned the federal government this week to do more to save them.

The National Marine Fisheries Service has not made much progress in carrying out the recovery plan it created in 2016 to reverse the decline, the groups say.

“It’s been a little bit over five years now. And the population is is not recovering. In fact, it’s worse,” said CT Harry, with the Environmental Investigation Agency, a group behind the petition.

EIA has produced a report on the government’s efforts to help the whales. It’s titled “Five Years of Failure.”

Harry noted that the National Oceanic and Atmospheric Administration continues to grant permits for activities in the inlet that emit noise or otherwise disturb the whales.

“The goal in our petition is to basically tell NOAA to follow their own advice by reevaluating how these harassment authorizations are permitted,” Harry said. “And to not look at each one on an individual basis, but to look at them on a cumulative basis to determine the cumulative stress impact of a multitude of threats.”

Read the full story at Alaska Public Media

 

Genetic Analysis Shows Beluga Whale in Puget Sound Likely Arrived from Arctic Waters

October 26, 2021 — Scientists have collected genetic material from the beluga whale that was first sighted in Puget Sound in early October. It indicates that the whale is likely from a large population of beluga whales in the Beaufort Sea, part of the Arctic Ocean north of Alaska.

The whale appears to have traveled thousands of miles south around Alaska through the Bering Sea and south to Puget Sound. It was last sighted on October 20 near Tacoma. The whale does not appear to be from the small and endangered Cook Inlet beluga population near Anchorage, Alaska.

The genetic analysis involved sequencing DNA extracted from a water sample collected near the beluga whale in Puget Sound earlier this month. This material is known as environmental DNA, or eDNA, because it comes from skin, fecal, or other cellular debris found in the environment near the animal.

Read the full story at NOAA Fisheries

 

NOAA Fisheries Cancels 2021 Belugas Count!

August 23, 2021 — The following was released by NOAA Fisheries:

After careful consideration regarding the impacts of the COVID-19 pandemic, NOAA Fisheries and partners have decided to cancel the 2021 Belugas Count! event.

Belugas Count! is a citizen science opportunity and festival event usually held in September, when viewing of endangered Cook Inlet beluga whales near Anchorage and Kenai is optimal.

“Belugas Count! is a family-focused event that brings together people of all ages,” said Jon Kurland, director of NOAA Fisheries Alaska Region’s Protected Resources Division. “Regrettably, due to the status of the pandemic, NOAA Fisheries and our partners decided to cancel the 2021 Belugas Count! event, as we did in 2020, out of an abundance of caution.”

Read more.

Endangered Cook Inlet belugas continue to decline, scientists aren’t sure why

March 17, 2020 — Cook Inlet beluga whales are continuing to decline in number, according to a NOAA abundance estimate released last month. From Alaska’s Energy Desk, Kavitha George has the story of how the decline in belugas is both controversial and largely unexplained.

The decline of the white whales in the inlet in view of Anchorage has been going on for decades. In the 1970’s they numbered around 1400. In 2008, Cook Inlet belugas were listed as endangered, and still numbers continued to drop. With new analysis methods today there are even fewer whales than previously thought — less than 300, and steadily declining from there.

Still, the reasons why Cook Inlet belugas are disappearing are still largely a mystery to researchers.

“It’s such a frustration to not be able to really understand why the population is not recovering,” said Paul Wade, a NOAA researcher who has done aerial surveys of Cook Inlet belugas since the 1990s. “So we are just stuck with hypotheses that we really cannot yet prove or disprove.”

Read the full story at KNBA

Helping Scientists Protect Beluga Whales with Deep Learning

March 11, 2020 — In the U.S., there are five populations of beluga whales, all in Alaska. Of those five, the Cook Inlet population is the smallest and has declined by about seventy-five percent since 1979. Subsistence hunting contributed to this initial population drop, but this practice was regulated starting in 1999, with the last hunt in 2005. Still, the beluga whale population in Cook Inlet has yet to recover. This population was listed as an endangered species in 2008, with hopes that the population would begin to recover in the near future, but more than a decade later they continue to decline, with a current population estimate of 328 whales.

Like other toothed whales, beluga whales rely highly on sound. They produce acoustic signals to find prey and to communicate; consequently, scientists can use acoustic recordings to study beluga populations and behavior. In 2008, the NOAA (National Oceanographic and Atmospheric Administration) Alaska Fisheries Science Center, in partnership with the Alaska Department of Fish and Game, put together an acoustic research program to continuously monitor beluga whale habitat. This program has two main objectives: (1) studying beluga whale behavior and population size, and (2) understanding the extent to which human-generated noise is disrupting beluga populations.

In the past, with raw audio recordings collected by underwater moorings, NOAA scientists used a very basic detector — based on energy levels in certain frequencies — to detect acoustic signals from beluga whales. This detector was tuned toward high recall, i.e., it was tuned to make sure that it didn’t miss any beluga sounds, but consequently allowed many sounds to pass through that were false positives, i.e. uninteresting background noise. Consequently, manual validation was required for each of those detections. This validation process is very time-consuming and labor-intensive, which limits the number of sensors that the team can deploy, and also limits the speed with which the team can provide answers to critical conservation questions.

Read the full story at Medium

First Long Term Acoustic Study Tunes Into Cook Inlet Beluga Whale Foraging Ecology

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

The first continuous multiyear acoustic monitoring effort across Cook Inlet provides the most comprehensive description of beluga whale seasonal distribution and feeding behavior to date.

This knowledge is critical for understanding and managing potential threats impeding recovery of this endangered population.

“Cook Inlet belugas were listed as endangered in 2008. Despite protective measures, the population continued to decline,” said Manuel Castellote, NOAA Fisheries affiliate/University of Washington/Joint Institute for the Study of the Atmosphere and Ocean biologist who led the study. “We undertook this study to provide information that managers needed to develop an effective recovery strategy.”

Castellote worked in partnership with the Alaska Department of Fish and Game to develop a passive acoustic monitoring program. It recorded beluga movements and foraging behavior within their critical habitat year-round over five years.

“Summer beluga distribution has been well studied, especially in the upper inlet. But information on foraging behavior during the rest of the year was basically nonexistent,” Castellote said. “That knowledge is essential to identify threats impeding the whales’ recovery.”

Read the full release here

Whale Week 2020: NOAA Saves Whales with Science

February 11, 2020 — The following was released by NOAA Fisheries:

Whales, dolphins, and porpoises belong to a group of marine mammals called cetaceans. NOAA Fisheries works to ensure the conservation of all cetaceans, which are protected under the Marine Mammal Protection Act. Some populations, such as the Cook Inlet beluga, North Atlantic right whale, and Southern Resident killer whale have been identified as Species in the Spotlight due to their endangered status and declining populations. We work with many partners to protect and recover species listed under the Endangered Species Act.

Join us as we celebrate Whale Week, February 10–16, 2020, leading up to World Whale Day on February 16, 2020. Check out the latest whale-related news and videos below and stay tuned for more new content throughout the week!

Read the full release here

Lawsuit Launched to Save Alaska’s Cook Inlet Beluga Whales From Harmful Oil Exploration

February 3, 2020 — Conservation groups Friday threatened to sue the Trump administration for approving oil exploration in Alaska’s Cook Inlet after new federal data found a dramatic decline in the area’s population of endangered beluga whales.

The formal notice of intent to file an Endangered Species Act lawsuit asks the National Marine Fisheries Service to revoke its authorization of oil and gas activities in the area until a new legally required consultation is completed.

The administration relied on higher beluga whale numbers when, in 2019, it approved rules allowing Hilcorp Alaska LLC to harm belugas and other marine mammals as it expands offshore oil and gas operations in Cook Inlet. But on Tuesday the Fisheries Service announced the population of whales was estimated at 279, a significantly smaller and more quickly declining population than the agency had thought.

“Since we pressed for listing the Cook Inlet Beluga whale as endangered in 2008, the drive for corporate profits and complacent government bureaucrats have conspired to stifle progress for this dwindling stock,” said Bob Shavelson, advocacy director for Cook Inletkeeper. “Hilcorp should do the right thing and abandon its plans for new drilling in Cook Inlet.”

Read the full story at the Alaska Native News

Groups say seismic blasts are hurting belugas in Cook Inlet

October 8, 2019 — Two conservation groups want the federal government to stop allowing seismic surveying in Cook Inlet. The Cook Inletkeeper and Center for Biological Diversity said the noise is harming beluga whales.

The survey work by Hilcorp involves blasting high pressure seismic airguns into the water. The sound waves that result help map the ocean floor and point to areas where oil and gas finds are likely.

Bob Shavelson, with the Cook Inletkeeper, said studies show loud noises can harm Cook Inlet beluga whales, which are considered highly endangered. He’s also concerned about the impacts on other creatures that inhabit the area where Hilcorp is testing.

“Imagine if a heavy metal band set up under your bedroom window,” Shavelson said. “How that would be if they were pounding 24 hours a day, seven days a week, for a couple months on end. You would go nuts.”

Read the full story at KTVA