Saving Seafood

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

HOMER NEWS: Cook Inlet commercial fisheries feed Alaskans

February 13, 2020 — Alaska is salmon country, where fish feed our communities in every way — sustenance, work, recreation, art, faith, family, tradition and culture. For us, second- and third-generation commercial fishermen raised on Cook Inlet, salmon is a complex livelihood and identity built on all of those things.

We are proud to wield the skills our fathers taught us, and proud that we are able to venture onto an unruly ocean and return with food for our communities. That is the core purpose of commercial fishing: the movement of healthy protein from the ocean to the people.

An incredible industry has grown around it, reaching from riverbed to global marketplace. But our first duty is as local harvester, as small business owners bolstering the food security and economic stability of coastal Alaska.

In Cook Inlet, commercial fishing provides essential coastal livelihoods through hundreds of small locally-owned businesses, and thousands of jobs in the harvesting, processing and marine trades sectors. Additionally, 79% of Cook Inlet fishermen are Alaska residents.

Read the full opinion piece at the Homer News

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

Alaska salmon permit trade sluggish amid high prices, uncertainties

December 18, 2019 — Trade on permits in Alaska’s salmon fisheries has been generally sluggish, as high prices in booming fisheries, warming waters, and market uncertainties are giving fishermen pause.

Fishermen are still looking to get into Bristol Bay after consecutive seasons of robust runs have coincided with strong prices, culminating in a 2019 season that was the most lucrative in history. Last year’s record-breaking preliminary ex-vessel value of USD 306.5 million (EUR 275.7 million) in Bristol Bay was nearly 250 percent of the 20-year average, and permits prices reflect the recent boom.

Read the full story at Seafood Source

Anchorage talk will dive into ocean acidification’s impact on Alaska marine life

October 16, 2019 — Hundreds of fishery stakeholders and scientists will gather in Anchorage next week as the state Board of Fisheries begins its annual meeting cycle with a two-day work session.

The seven-member board sets the rules for the state’s subsistence, commercial, sport and personal use fisheries. It meets four to six times each year in various communities on a three-year rotation; this year the focus is on Kodiak and Cook Inlet.

The fish board and the public also will learn the latest on how a changing climate and off-kilter ocean chemistry are affecting some of Alaska’s most popular seafood items at an Oct. 23 talk and Q&A on ocean acidification in Alaska.

They may also be surprised to learn that only two studies have looked at salmon response to ocean acidification, and both were conducted outside Alaska.

Most of the research to date has focused specifically on crab and fish stocks, said Bob Foy, director of the Alaska Fisheries Science Center at the NOAA Auke Bay lab in Juneau who will lead the Anchorage presentation.

Read the full story at the Anchorage Daily 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

Lawsuit claims Cook Inlet exploration would diminish endangered belugas

September 5, 2019 — Two environmental groups are suing the Trump administration for its decision allowing Hilcorp to disturb beluga whales as it explores Cook Inlet for offshore oil and gas.

Cook Inlet keeper is one of groups suing. Advocacy Director Bob Shavelson says seismic blasts and other exploration work would devastate a population already suffering from the effects of climate change and other factors.

“The Cook Inlet beluga whales are literally teetering on the edge of extinction,” he said. “There was a general idea that, with the halt to Native subsistence hunting in 1999, that the population would rebound. But that didn’t occur.”

Read the full story at Alaska Public Media

ALASKA: Council committee struggles with federal Cook Inlet salmon plan

April 18, 2019 — Two-and-a-half years after a federal court directed the North Pacific Fishery Management Council to develop a fishery management plan for the Cook Inlet salmon fishery, there is still a lot of work to do.

The commercial salmon fisheries of Alaska are primarily managed by the state, including in Cook Inlet, where part of the fishery takes place in federal waters. The North Pacific Fishery Management Council for years deferred management of the salmon fishery there to the Alaska Department of Fish and Game, finally removing Cook Inlet completely from its FMP in 2012.

The United Cook Inlet Drift Association and the Cook Inlet Fishermen’s Fund sued, saying the federal government had a responsibility to manage that fishery to ensure it complies with the Magnuson-Stevens Act. In 2016, the 9th Circuit Court of Appeals agreed, and the council reluctantly turned back to developing a management plan.

Many of the commercial fishermen there have a longstanding dissatisfaction with the Alaska Fish and Game and the Board of Fisheries, stemming from a belief that the department’s allocation decisions governed by the board are politically rather than scientifically motivated and that the escapement goals for sockeye salmon on the Kenai River are too high.

They sought to exercise federal influence over state management through the lawsuit, and now are running into roadblocks on federal authority to do so.

Read the full story at the Alaska Journal of Commerce

ALASKA: Cook Inlet sockeye forecast improves; kings closed in North

January 10, 2019 — After two disappointing sockeye seasons in a row, the 2019 season may look up for Upper Cook Inlet commercial fishermen.

The Alaska Department of Fish and Game’s sockeye salmon forecast, published Jan. 4, predicts a total run of 6 million sockeye to Upper Cook Inlet stream systems, with an expected commercial harvest of 3 million and 1 million for sportfishing and subsistence harvest.

If the forecast proves true, the run will be nearly double the 2018 run of 3.1 million.

The Kenai River, the largest sockeye-producing river in the region, is projected to receive a run of about 3.8 million sockeye, the majority of which are the 1.3 age class (one year in freshwater, three years in saltwater).

The Kasilof River, the second-largest producer, is projected to see about 873,000 sockeye come back, with a slight majority in the 1.3 age class.

The Kenai’s forecast is greater than its 20-year average of 3.5 million, while the Kasilof’s is behind its 20-year average of 979,000 fish.

Read the full story at the Alaska Journal of Commerce