Saving Seafood

Northern Cod Fisheries Improvement Project to Aid in Understanding of Stock Components

April 24, 2018 — SEAFOOD NEWS — A Northern Cod Fisheries Improvement Project (FIP) will help researchers understand Northern Cod stock components and their movement along the slope of the continental shelf, as well as their inshore offshore migration patterns.

The project is being led by the Groundfish Allocation Council (GEAC) and the Association of Seafood Producers (ASP) in an effort to “enable more effective stock assessment modeling and management measures to control fishing mortality.” Acoustic receivers will be dropped in waters off Eastern Canada and acoustic tags will be placed on Northern cod.

“This is crucial work, and an important piece in addressing longstanding scientific questions around the Northern cod resource,” said FIP co-chairs Derek Butler, Executive Director of ASP, and Bruce Chapman, President of GEAC.

Government scientists, as well as academia from Memorial University, Dalhousie University, the Ocean Tracking Network, and the Ocean Frontier Institute, andindustry reps from Icewater Seafoods and Ocean Choice International of Canada, and Davigel Inc. of France, sat in on a scientific workshop for the research program. The group came up with a final deployment plan for the acoustic tags and receivers.

Industry stakeholders reported on the progress at their third annual FIP Working Group meeting in Brussels.

This story was originally published by Seafood News, it is republished here with permission.

 

Global Fishing Watch responds to Ray Hilborn’s critiques of its study

March 27, 2018 — Global Fishing Watch welcomes Dr. Ray Hilborn’s recent statement in Seafood Source expressing his desire to work together to strengthen our collective insights into commercial fishing activity.

Furthering innovation and collaboration with the scientific community is at the heart of Global Fishing Watch’s mission to advance responsible stewardship of our oceans through increased transparency. Our Research Partners program, an interdisciplinary collaboration with some of the world’s leading marine science institutes, strives to improve fisheries management and science through the sharing of data, new research and cooperation.

Our recent study published in Science was produced with partners at the University of California, University of Santa Barbara, National Geographic Society’s Pristine Seas project, SkyTruth, Dalhousie University, Stanford University, and Google. This research has produced the first-ever dataset of global fishing activities, as captured by satellites using automatic identification system (AIS) positions. Global Fishing Watch’s algorithm processed 22 billion AIS messages to identify more than 70,000 commercial fishing vessels, the sizes of and engine powers of these vessels, what type of fishing they engaged in, and where and when they fished down to the hour and kilometer.

The study and associated maps also depict global fishing activity with an unprecedented resolution – the fishing effort footprint is two to three orders of magnitude higher in spatial and temporal resolution than previous datasets – and reveals that industrial fishing covers more than 55 percent of the ocean’s surface – over four times the area covered by agriculture. This new high-definition global view of fishing would not have been possible without recent advances in computing power, an increase of satellites in orbit, and improved machine learning algorithms.

Importantly, by making all of the data in this study public and freely available, we aim to increase transparency in the commercial fishing industry and improve opportunities for sustainable management and informed decision making. We have also grown the data available within our transparency platform, including adding more AIS data, and through our government and research partners, including vessel monitoring system (VMS) and Visible Infrared Imaging Radiometer Suite (VIIRS) data.

Dr. Hilborn says that vessels monitored for the study were largely tuna boats over 100 feet in length. Technically, these tuna boats are only a fraction of the 70,000 vessels monitored in our study. By far, the vast majority of vessels we observe are Chinese vessels operating in Chinese waters.

For the study, we also only track vessels that have AIS devices, and the fraction of fishing vessels with AIS varies considerably between regions of the ocean. In some regions, such as in Europe, almost all sizeable fishing vessels broadcast their locations. Similarly, in the high seas, we can capture most of the fishing activity, as a high fraction of high seas fishing vessels carry AIS. By contrast, in many developing countries, only a small number do. This fact makes our dataset incomplete, but it is still far more comprehensive than previous global datasets of fishing effort.

Read the full statement from Global Fishing Watch at Seafood Source

 

Large-scale commercial fishing covers more than half of the oceans, study finds

February 23, 2018 — WASHINGTON — Scientists tag sharks to see where they roam in the high seas, but until now they couldn’t track the seas’ biggest eater: Humans. By using ships’ own emergency beacons, researchers got the first comprehensive snapshot of industrial fishing’s impacts around the globe. And it’s huge — bigger than scientists thought, according to a new study.

Large-scale commercial fishing covers more than 55 percent of the oceans with the world’s fishing fleet traveling more than 285 million miles a year — three times the distance between Earth and the sun, according to research in Thursday’s journal Science.

Five countries — China, Spain, Taiwan, Japan and South Korea — were responsible for 85 percent of high seas fishing.

“The most mind-blowing thing is just how global an enterprise this is,” said study co-author Boris Worm, a marine biologist at Dalhousie University in Canada. “It’s more like factories that are mass producing product for a global market and less like hunters that are stalking individual prey.”

China dominates global fishing. Of the 40 million hours that large ships fished in 2016, 17 million hours were by boats under a Chinese flag, according to another study co-author, Stanford marine biologist Barbara Block.

The fishing patterns were gleaned from 22 billion automated ship safety signals beamed to satellites. Before this, scientists had to rely on a sampling of ships’ logs and observations, which were spotty.

Ships are obeying no-fishing zones and times, although they hover at the edges of marine-protected areas. Fishing tends to drop on holidays including Christmas, New Year’s and the Lunar New Year, researchers found.

“The maps of global fishing in this report are sobering,” Douglas McCauley, a University of California, Santa Barbara marine biologist who wasn’t part of the study, said in an email.

Read the full story from the Associated Press at CBS News

 

What If We Had All Listened to NASA and Started Eating Krill?

October 5th, 2016 — Way back in 1977—the year Star Wars came out, British Airways launched Concorde SST service between London and New York, and Jimmy Carter signed legislation creating the Department of Energy—NASA published an exceptionally forward-looking report called “The Role of Aerospace Technology in Agriculture.” Its purpose was to figure out how to feed a ballooning world population given the Earth’s limited resources—using space-age technology. Oddly enough, amid high-minded discussions about the aerial application of chemicals and remote-sensing systems, was tucked this suggestion: Perhaps humans could subsist wholly—or partially—on a diet of krill.

The succinct proposal clearly fell to the wayside and remained buried in the NASA report until we happened upon it recently. It got us thinking: What if we humans had actually embraced this notion back in the day and had become a race of krill-eating beings? Was this forgotten report from the 70s a viable proposal for saving the future of mankind?

Krill, of course, are the tiny, shrimp-like crustaceans that are found near the rock bottom of the food chain. They feed on phytoplankton and—because they are protein-rich—are a primary food source for larger fish, which eventually get eaten by us. Although some nations certainly do make use of krill as a food stuff—the Japanese call it okiami, and Norwegians eat krill paste with crackers—in most of the world, krill is just used as fish feed in aquaculture. Vitamins are also made with their oil, and certain enzymes found in krill are used in various food and medical products. However, not eating them is understandable, too—krill are quite salty, and each crustacean’s hard exoskeleton must be removed before being eaten because it contains contains fluorine, which is toxic in high enough concentrations. But still, if humankind’s sustainability problems could be saved by krill, maybe we should figure out a way to use them as sustenance. Who needs Soylent or crickets if the oceans are filled to the brim with underutilized krill, right?

Evidently not.

As it turns out, the harvesting of Antarctic krill has greatly increased since the report was published, and conservationists are now increasingly concerned about its diminishing global supply. Not only do countless fisheries rely on Antarctic krill as feed, but demand for krill oil and its enzymes has skyrocketed. “It is well-known that many proposals in the 1970s were made to greatly increase food production from the sea—including harvesting krill and other zooplankton,” explains Boris Worm, a marine research ecologist and associate professor at Dalhousie University. “At the time, it was still thought that the sea could feed a rapidly growing human population, but by the 1990s, it became clear that wild fisheries could not be increased any more.”

Read the full story at Vice 

Dalhousie scientists play big role in Leonardo DiCaprio-funded website

September 20, 2016 — Dalhousie University researchers have played an important part in bringing to life a ‘revolutionary’ new website that allows anyone with internet to monitor and track commercial fishing activity around the world, as well as potentially identify illegal fishing.

Unveiled last week, Global Fishing Watch is a joint project between Google, digital mapping non-profit SkyTruth and ocean conservation group Oceana. It’s funded by the Leonardo DiCaprio Foundation.

The website allows users to view a world map with more than 35,000 major fishing vessels moving in “near real time,” which is 72 hours from the present time.

Engineers behind Global Fishing Watch collaborated with researchers at Dalhousie University in the process of developing new ways to identify and hone in on fishing vessel activity, said Jacqueline Savitz, vice-president for U.S. and Global Fishing Watch at Oceana.

Global Fishing Watch will also eventually incorporate algorithms developed at Dalhousie, to provide a more complete picture of fishing activity on the high seas.

Read the full story at CBC News