Saving Seafood

Aggressive new seaweed is killing coral reefs in remote Hawaiian island chain

July 8, 2020 — Researchers say a recently discovered species of seaweed is killing large patches of coral on once-pristine reefs in the Northwestern Hawaiian Islands and is rapidly spreading across one of the most remote and protected ocean environments on Earth.

A study from the University of Hawaii and others says the seaweed is spreading more rapidly than anything they’ve seen before in the Northwestern Hawaiian Islands, a nature reserve that stretches more than 1,300 miles north of the main Hawaiian Islands.

The study was published Tuesday in the journal PLOS ONE.

The algae easily breaks off and rolls across the ocean floor like tumbleweed, scientists say, covering nearby reefs in thick vegetation that out-competes coral for space, sunlight and nutrients.

Read the full story from the Associated Press at the Los Angeles Times

Climate warming promises more frequent extreme El Niño events

October 22, 2019 — El Niño events cause serious shifts in weather patterns across the globe, and an important question that scientists have sought to answer is: how will climate change affect the generation of strong El Niño events? A new study, published today in the Proceedings of the National Academy of Science by a team of international climate researchers led by Bin Wang of the University of Hawaii’s International Pacific Research Center (IPRC), has an answer to that question. Results show that since the late 1970’s, climate change effects have shifted the El Niño onset location from the eastern Pacific to the western Pacific and caused more frequent extreme El Niño events. Continued warming over the western Pacific warm pool promises conditions that will trigger more extreme events in the future.

The team examined details of 33 El Niño events from 1901 to 2017, evaluating for each event the onset location of the warming, its evolution, and its ultimate strength. By grouping the common developmental features of the events, the team was able to identify four types of El Niño, each with distinct onset and strengthening patterns. Looking across time, they found a decided shift in behavior since the late 1970’s: all events beginning in the eastern Pacific occurred prior to that time, while all events originating in the western-central Pacific happened since then. They also found that four of five identified extreme El Niño events formed after 1970.

Wang and his co-authors focused on the factors that seemed to be controlling these shifts, including increased  in the western Pacific warm pool and the easterly winds in the central Pacific, and found that with continued , those factors may lead to a continued increase in frequency in extreme El Niño events.

Read the full story at PHYS.org

Pacific bigeye tuna fishery decline expected due to climate change

July 23, 2019 — A decline in Hawaii’s deep-set longline bigeye tuna fishery may be “inevitable” with climate change, according to a study by researchers in Hawaii and Australia.

Changes to bigeye tuna’s food supply, via changes to the plankton community, and temperature, will reduce yields because it will affect tuna’s fitness. This will impact tuna’s aerobic scope and ability to successfully forage, researchers from Pacific Islands Fisheries Science Center, University of Hawaii at Manoa, Honolulu, and the Marine and Antarctic Studies, University of Tasmania said.

Proactive fisheries management could be an effective tool for mitigating climate change, either by balancing or outweighing climate effects. “However, modeling these [climatic] stressors jointly shows that even large management changes cannot completely offset climate effects.”

Read the full story at Undercurrent News

Place-Based Management Can Protect Coral Reefs in a Changing Climate

April 30, 2019 — Researchers from the state Department of Health and the University of Hawai‘i at Mānoa have developed and applied a new technology in Hawai‘i that identifies where coral reef ecosystems and associated fisheries are vulnerable to human activities and where to focus management actions to minimize anthropogenic impacts.

The authors of the newly published study in the journal Ecological Applications identified specific locations on land where improved wastewater management and landscape practices would yield the greatest benefits for downstream reefs in terms of mitigating harm to coral communities and associated reef fish populations.

Expansion of coastal development, along with wastewater discharge and fertilizers, can harm coral reefs and their fisheries through increases in sediment and nutrient runoff. Consequent reef degradation directly affects ecological resilience, food security, human well-being, and cultural practices in tropical island communities around the world.

The researchers focused on the ahupua‘a (land divisions) of Hāʻena on Kaua‘i and Ka‘ūpūlehu on Hawai‘i Island, at opposite ends of the main Hawaiian Islands, where native Hawaiian communities are taking action to manage their resources through a place-based management approach.

Read the full story at Big Island Now

Chinese Hackers Target Universities in Pursuit of Maritime Military Secrets

March 5, 2019 — Chinese hackers have targeted more than two dozen universities in the U.S. and around the globe as part of an elaborate scheme to steal research about maritime technology being developed for military use, according to cybersecurity experts and current and former U.S. officials.

The University of Hawaii, the University of Washington and Massachusetts Institute of Technology are among at least 27 universities in the U.S., Canada and Southeast Asia that Beijing has targeted, according to iDefense, a cybersecurity intelligence unit of Accenture Security.

The research, to be published this week, is the latest indication that Chinese cyberattacks to steal U.S. military and economic secrets are on the rise. The findings, reviewed by The Wall Street Journal, name a substantial list of university targets for the first time, reflecting the breadth and nature of the ongoing cyber campaign that iDefense said dates to at least April 2017.

Chinese officials didn’t immediately respond to a request for comment, but have denied that they engage in cyberattacks.

Read the full story at the Wall Street Journal

Hawaii Volcano’s Impact on Marine Life to be Studied by Ocean Robots

June 28, 2018 — SEAFOOD NEWS — Liquid Robotics, the creator of the first wave and solar powered unmanned ocean robot, is using their technology to collect data from where lava from Hawaii’s Kilauea Volcano is entering the ocean.

The company announced earlier this week that they are deploying two of their ocean robots, called Wave Gliders, to “study the effects of the lava entering the ocean, the plume it creates and the interactions of the lava and seawater directly from the surface of the ocean.”

Kilauea began erupting in early May, forcing evacuations of the Leilani Estates and Lanipuna subdivisions. By the end of the month the lava flow reached the Pacific Ocean, creating a thick and hazardous cloud where the lava hit the water. Residents of Hawaii’s Big Island were warned about the toxic volcanic gas emissions, but now Liquid Robotics will be able to give a better idea of how the volcanic eruptions and lava flow are affecting marine life, including coral reefs and fish populations.

“The effect of this massive lava flow entering the ocean is dramatic and amazing, but at the same time somewhat mysterious,” Roger Hine, CTO and co-founder of Liquid Robotics said in a statement. “Detailed measurements of the ocean plume and the ecosystems it impacts are now possible and safe to obtain with unmanned systems like our Wave Gliders. This is an opportunity of a lifetime to deploy our ocean robots to help advance science.”

The Wave Gliders will get approximately 300+m from the lava flow plume and collect “rare subsurface, surface and atmospheric data.” The ocean robots will be able to collect data on water temperatures, oxygen levels, pH levels, salinity, turbidity, conductivity and underwater acoustics. Researchers from the University of Hawai’i at Hilo, Massachusetts Institute of Technology and the U.S. Geological Survey’s Hawaiian Volcano Observatory will be looking at the data.

“The plume of hot, sediment-laden water generated by lava flowing into the ocean spreads out, impacting surrounding ecosystems and permitted boaters operating in the area,” the University of Hawai’i at Hilo’s Dr. Steve Colbert explained. “We don’t know how far and deep that plume extends, or how it changes the oceanographic conditions or changes in the flow of lava. The Wave Gliders provide us the opportunity to answer these important questions.”

This story originally appeared on SeafoodNews.com, a subscription site. It is reprinted with permission. 

$4.6 million grant will allow genetic time travel for Old Dominion professor

September 27, 2017 — Kent Carpenter developed an interest in fish early in life.

“It started when I watched Jacques Cousteau at 13 years old,” said Carpenter who earned an undergraduate degree in marine biology at Florida Institute for Technology in 1975 and later went on to earn his doctorate at the University of Hawaii.

From 1975 to 1978, he was in the Peace Corps based in the Philippines.

That is when – and where – Carpenter said his interest in ichthyology, or the study of fish, flourished.

“I was in charge of coral reef research for the Bureau of Fisheries and Aquatic Resources” (in the Philippines), he said.

Now a professor in the department of biological sciences at Old Dominion University, Carpenter has been awarded a $4.6 million grant from the National Science Foundation.

Read the full story at Inside Business

HAWAII: Report contends state’s nearshore fisheries undervalued, undermanaged

September 6, 2017 — KAILUA-KONA, Hawaii — Hawaii is neglecting a “hidden economy” by significantly undervaluing its nearshore fisheries both economically and culturally, according to a recently published report.

“Follow that fish: Uncovering the hidden blue economy in coral reef fisheries” was compiled by the Department of Natural Resources and Environmental Management at the University of Hawaii at Manoa and Conservation International, Center for Oceans. Researchers at Arizona State University also contributed to the report released in August.

The report states that because of the inherently “remote and dispersed” nature of nearshore fisheries, they have been studied more sparsely and thus are not understood as well as industrial fisheries.

According to the report, the economic benefits of nearshore fisheries around islands throughout the Pacific Ocean are often significantly underestimated. As a factor of gross domestic product, these fisheries are typically five times more valuable than their country’s recognize.

Researchers estimated the annual value of Hawaii’s nearshore fisheries at between $10.3-$16.4 million, adding they produce roughly 7.7 million meals per year.

Read the full story at West Hawaii Today

Hawaiʻi nearshore fishery provides big benefits

August 16, 2017 — The monetary, social and cultural importance of Hawaiʻi nearshore fisheries has been examined by researchers in the Department of Natural Resources and Environmental Management (NREM). The study argues that fully appreciating the multitude of benefits the nearshore fishery provides to society is a crucial step towards sustainable management.

The multi-year study tracked commercial and noncommercial reef-fish value chains, which was conducted as a collaboration between researchers in the College of Tropcial Agriculture and Human Resources and Conservation International Hawaiʻi. The study, “Follow that fish: Uncovering the hidden blue economy in coral reef fisheries,” was published in the scientific journal PLoS ONE.

Small-scale fisheries support the well-being of millions of people around the world—even in a well-developed economy such as Hawaiʻi’s, they provide important economic as well as social benefits. The total annual monetary value of the fishery is approximately $10.3 to $16.4 million. The non-commercial fishery in particular provides huge benefits to the community—non-commercial catch is around three times reported commercial catch and is worth $4.2 to $10 million more annually.

Read the full story at University of Hawai’i News

Fishing industry pushes back following questions about labor practices

September 15, 2016 — HONOLULU — Allegations of harsh treatment of workers in Hawaii’s longline fishing fleet have made headlines nationally.

Now, the industry is defending itself, one day after a grocery store chain stopped buying tuna from Hawaii’s fish auction.

There are 140 longline boats and 700 fishermen in Hawaii’s fishing fleet. The undocumented workers’ employment is legal.

“It’s a very in-demand job for them,” Hawaii Longline Association president Sean Martin said.

University of Hawaii professor Uli Kozok interprets for Indonesian fishermen. He’s heard complaints of physical abuse aboard the boats.

“They’re quite a few stories that I’ve heard where fishermen were beaten by the captain or by the first officer,” he said.

He said fishermen complain of insufficient food and third-world working conditions.

Martin thinks the allegations are unfounded.

“It’s a long ways from slave labor and human trafficking,” he said.

He insists the fishermen are treated fairly and humanely.

“The idea that there’s these abuses going on and nobody knows about it and they haven’t been reported — I can’t buy it,” he said.

Immigration attorney Clare Hanusz helped a foreign fisherman who sustained a serious eye injury.  He claimed his captain refused to take him to the doctor.

“So I asked the man could you go and show me what kind of medication that you had been given. He went back on the boat and came back with a vial of Visine,” she said.

The fishermen sign contracts to work for $500 a month.

Read the full story at Hawaii News Now