Saving Seafood

Alaskan Scientists Continue Humpback Research as Whale Watching Industry Aims to Rebound

July 26, 2021 — The following was released by NOAA Fisheries:

Juneau, Alaska is one of the most popular whale watching tourism destinations in the world. Roughly 1.3 million tourists visited the city in 2019 via cruise ship, and more than 330,000 of those visitors participated in local whale watching trips during their port-of-call.

In 2020, cruise ships did not visit Juneau due to COVID-19, and whale watching companies lost a majority of their business. This provided a rare opportunity for scientists to study humpback whale behavior and health in the absence of vessel traffic and heavy whale watching tourism.

Heidi Pearson of the University of Alaska Southeast partnered with Shannon Atkinson of the University of Alaska Fairbanks and NOAA scientists Suzie Teerlink and John Moran to collect baseline data during this unusual time. Their research will help us understand how changes in vessel activity potentially impact whale behavior and health.

The scientists are currently in the second year of the study. Field crews from the UK’s BBC visited Juneau during last year’s field season to collect footage of the collaborative research project that they have now compiled into a featurette that is being circulated around the globe.

Read the full release here

Federal habitats to protect whales would reach to Alaska

November 12, 2019 — The National Marine Fisheries Service proposed creating critical habitat sites to protect humpback whales that will extend to waters off Alaska, officials said.

The habitats are focused on the feeding areas of groups of humpback whales and include the area off Juneau, The Juneau Empire reported Sunday.

A critical habitat does not establish a sanctuary or preserve, said Lisa Manning, an official with the National Oceanic and Atmospheric Administration, which includes the fisheries service. Manning conducted a public presentation about critical habitats at the University of Alaska Southeast in Juneau last week.

“It does not affect recreational activities. It does not affect private lands,” Manning said. “It only affects federal activities.”

Read the full story from the Associated Press at The Washington Times

Research on environmental DNA in salmon monitoring could have economic benefits

January 22, 2019 — Each year wild salmon return to the streams in which they were born to spawn and die. Salmon fishery managers must ensure that adequate numbers of fish return each year to spawn and produce offspring for future harvest. It is expensive and labor intensive to count returning salmon, especially in remote streams.

Researchers at the University of Alaska Southeast, Auke Bay Laboratories, Oregon State University, the UK and China have found that  DNA collected in water samples from Auke Creek can be used to infer the number of salmon passing upstream to spawn. Two of the authors on the published paper who contributed to the research are former UAS Biology students now in graduate school, Josh Russell and Donovan Bell. Russell is currently enrolled in the UAF College of Fisheries and Ocean Sciences program, and Bell is in the biology graduate program at the University of Montana.

This form of DNA, termed “environmental DNA” or “eDNA”, can be collected from water samples. Water samples are then filtered and probed using molecular genetic techniques to quantify the amount of DNA belonging to each salmon species, providing insights into the number of salmon upstream.

Read the full story at PHYS.org

Could migrating squid help Alaska predict climate change?

October 17, 2017 — Juneau, Alaska — Chasing warmer waters, the market squid might be here to stay

Attracted to warming ocean temperatures, small, iridescent squid have been moving into Southeast Alaska waters. They could be a cipher to understanding how sea life reacts to climate change, said University of Alaska Southeast associate professor Dr. Michael Navarro at an Evening at Egan talk Friday at UAS.

Navarro, an assistant professor of marine fisheries, has been studying what are called market squid in partnership with researchers at Stanford University. With the help of undergraduate students, he opened his lab at UAS last month.

He’s trying to understand if market squid are setting up shop here or only visiting. The squid don’t historically range north of British Columbia. Alaska researchers, however, have encountered them in waters in the Gulf of Alaska and Southeast for more than a decade.

Read the full story at Juneau Empire

As glaciers melt, scientists try to figure out how fish will respond

As climate change puts fisheries, ecosystems on the line, scientists work to understand how marine life will respond

September 11, 2017 — Glaciers in Southeast and around the world are melting. This much scientists know.

About half of the water in the Gulf of Alaska comes from glacial melt, current estimates hold. In Southeast, about 30 percent of all the water flowing from land to sea is glacier melt water.

That percentage is expected to increase due to climate change. But scientists don’t yet know how all that melt water might affect the animals swimming through it.

With the help of a net and a small crew, that’s a problem ecologists Anne Beaudreau and Carolyn Bergstrom have been trying to solve by continuing five years of research this summer. The professors — Bergstrom from the University of Alaska Southeast and Beaudreau from the University of Alaska Fairbanks — have been studying marine biodiversity at the mouths of the Mendenhall, Cowee and Eagle rivers.

Read the full story at the Juneau Empire