Saving Seafood

Baby fish will be lost at sea in acidified oceans

December 15, 2015 — The ability of baby fish to find a home, or other safe haven, to grow into adulthood will be severely impacted under predicted ocean acidification, University of Adelaide research has found. 

Published today in the journal Proceedings of the Royal Society B, the researchers report the interpretation of normal ocean sound cues which help baby fish find an appropriate home is completely confused under the levels of CO2 predicted to be found in oceans by the end of the century.

“Locating appropriate homes is a crucial step in the life cycle of fish,” says Tullio Rossi, PhD candidate with the University’s Environment Institute. “After hatching in the open ocean, baby fish travel to reefs or mangroves as safe havens to feed and grow into adults.

“Baby fish can find those places through ocean noise: snapping shrimps and other creatures produce sounds that the baby fish follow.

“But when ocean acidity increases due to increased CO2, the neurological pathways in their brain are affected and, instead of heading towards those sounds, they turn tail and swim away.”

Read the full story at Science Daily

How Fish Communicate, Even Using Noise

December 13, 2015 — Q. We know that aquatic mammals communicate with one another, but what about fish?

A. Fish have long been known to communicate by several silent mechanisms, but more recently researchers have found evidence that some species also use sound.

It is well known that fish communicate by gesture and motion, as in the highly regimented synchronized swimming of schools of fish.

Some species use electrical pulses as signals, and some use bioluminescence, like that of the firefly.

Some kinds of fish also release chemicals that can be sensed by smell or taste. In 2011, a scientist in New Zealand suggested that what might be called fish vocalization has a role, at least in some ocean fish.

Read the full story at the New York Times

Overfishing is Getting Filleted by Markets

December 9, 2015 — Overfishing is a serious threat to the nearly 200 million people who depend on the world’s oceans for sustenance. After all, nearly one in five people around the world consume fish as their primary source of protein and overfishing has deleterious cascade effects on other marine ecosystems.

Illegal and excessive fishing are to a degree inevitable because oceans, rivers and many lakes are publicly administered. This gives fishermen an incentive to take from them as much as is legally possible. Yet, market-based resource management is offering a concrete solution to this “tragedy of the commons” and has already begun alleviating strains on U.S. fish stocks.

The U.S. economy is intertwined with the fate of the high seas. By conservative estimates, commercial and recreational fishing alone account for 1.3 million jobs and nearly $60 billion in economic activity. Overfishing has pernicious effects on Americans’ livelihoods: commercial anglers can lose out on up to 80 percent of potential revenue when local fish species see drastic population decline, as was the case in New England when cod, flounder, and halibut populations were unexpectedly low in 2009.

With market-based resource management, data from September 2015 show that the total number of wild stocks placed on the “overfishing” watch list has fallen to its all-time lowest level since 1997. Since the 2007 reauthorization of the Magnuson-Stevens Act, annual catch limits (ACLs) have allowed the National Oceanic and Atmospheric Administration (NOAA) to reduce the number of overfished U.S. stocks by nearly 75 percent since 2007 alone (from 41 in 2007 to only 10 in 2014). ACLs create total tonnage allotments based on a series of population growth factors specific to certain fish species.

Read the full story at Economics 21

 

Study: Offshore wind’s impacts on fisheries unclear; federal report calls for more research

December 3, 2015 — NEW BEDFORD, Mass. — Advocates for regional fishing industries and marine life are concerned about the impacts of offshore wind turbines as deep-pocketed, experienced developers eye construction in ocean waters south of Martha’s Vineyard.

The offshore wind industry has been touted as a key piece of New Bedford’s economic future, but advocates’ concerns are reflected in a federal report that says little is known about how turbines could affect fish populations.

“Potential impacts of offshore wind energy development on fisheries resources are not well understood, both here in the U.S. and abroad,” states a study released in July by the federal Bureau of Ocean Energy Management (BOEM), citing a “comprehensive” review of related literature.

“The site-specific project data needed to evaluate the potential impacts on fisheries resources in these (wind energy areas) is lacking, resulting in uncertainty and speculation,” the study also states.

BOEM’s new committee on ocean energy management and the environment will hold its first meeting next week, in Washington, D.C. The group of respected scientists from across the nation — none from SouthCoast — will help guide BOEM’s stewardship of offshore energy resources, a BOEM news release says.

The group could help fill the void of information cited by the BOEM study over the summer.

Read the full story at the New Bedford Standard – Times

 

Marine Protected Areas: are they conservation measures?

October 28, 2015 — Billionaire philanthropist Richard Branson recently composed a brief article on his website to applaud recent efforts to expand marine protected areas (MPAs) around the world and to call for widespread no-take MPAs (marine reserves) on the high seas and in the exclusive economic zones of the developed world.

Of the efforts Branson highlights as positive steps forward, he cites The Bahamas efforts to protect at least 20% of its marine environment by 2020, the recent and controversial Ross Sea MPA proposal, and recent efforts by Pacific Island nations like Palau to fully protect upwards of 80% of its waters. Branson explains that, “science suggests we need to fully protect very large areas of ocean from destructive and extractive activities, so that at least 30% of the global ocean is fully protected,” but only 3% is currently marine reserve.

Branson believes the, “combination of overfishing, pollution and warming and acidifying seas,” can be alleviated by widespread, internationally agreed upon marine reserves:

“Now is the time for a massive groundswell that reflects the realities of the 21st century. So instead of destroying life in the sea, we must regenerate and rebuild it. Marine Protected Areas across the globe are the key to making sure this happens. From small to large, from the tropics to the icy frontiers, we need protection and we need to get moving on all fronts.”

Comment by James H. Cowen, Louisiana State University

Marine Protected Areas (MPAs) have become, in the eyes of many scientists, NGOs and lay people (most recently Richard Branson, CEO and owner of the Virgin empire), a solution for the overexploitation of fish populations and other marine aquatic animals (corals, sponges, gastropods, etc.) that are contained within their boundaries (Protect Planet Ocean) Many supporters of MPAs rightly acknowledge the many threats to the ocean, including climate change, ocean acidification, pollution, land based runoff, plastics, and overfishing. Then as a solution to these problems MPAs are proposed when, in fact, they impact none of these except legally regulated fishing, especially in the developed world where most fisheries are well managed. It is also important to note that most MPAs exclude commercial fishing, while recreational fishing is permitted. A Sciences paper published in 2004 indicated that recreational fishers account for 23% of the total US landings of the most relevant species (snappers, grouper, sea basses, several species of drums, etc.). Given the likelihood that recreational fishing mortality has increased since 2004, and is higher in MPAs the relevant species groups listed above are again indicative of poor planning.

Read the full story at CFOOD

Can the net transform the world’s fishing industries?

November 30, 2015 — Local fishing communities in Indonesia are beset by a multitude of connected challenges, from illegal fishing to declining fish populations to their own personal safety in the country’s turbulent seas.

But a New York based telecoms company called Tone believes mobile network technology can solve these problems by getting fishermen in remote communities connected to the Internet through an initiative called mFish. Scaled up, they believe their model could address the problem of unsustainable and illegal fishing globally, as well as being applied in many other contexts.

“What we’re trying to do is bridge the digital divide,” says Tone’s Chief Marketing Officer Roald Van Wyk. “People assume technology equals connectivity, but a smartphone is no use if you can’t afford the data.” According to Tone, mobile broadband penetration in the developing world is still just 21%, indicating a huge untapped market which they’re hoping to help bring online.

Tone’s business model is to work with local partners to deliver a range of affordable data plans in countries where far fewer people are locked into long term contracts with mobile carriers – what’s known as ‘unbundling.’ The idea is that consumers get access to various content packages via channels on the Tone platform, some of which are co-branded with local companies to make them affordable. Tone will reinvest 20% of profits into social and environmental initiatives through its foundation.

Read the full story at The Guardian

 

Say Goodbye to Bycatch: Fishing Smarter in the 21st Century

November 23, 2015 — Fishing nets are blind. They have been for thousands of years.

Just like our ancestors, today’s commercial fishermen drop their nets, or “trawls”, into dark, opaque waters. What they pull up is anyone’s guess.

In addition to the fish being targeted, their trawls also contain “by-catch”: unintended fish species and ocean wildlife that are tossed back because they cannot be sold. The thing is, by the time the nets are hauled up, most of the by-catch is already dead.

So what’s the problem with catching a few extra fish?

What if I told you that by-catch is a major contributor to overfishing and poses a significant threat to the world’s oceans? Currently, in the United States, approximately 1 in 5 fish caught by commercial fishermen are by-catch. That’s 2 billion pounds of fish and other marine species wasted each year. Imagine inadvertently capturing, killing, and disposing of 4,800 blue whales…what an enormous, destructive waste.

In attempting to solve the by-catch problem, Rob Terry, founder of SmartCatch, asked himself: what if commercial fisheries could see inside their trawls before they reel them in?

In 2014, the Lindblad Expeditions-National Geographic (LEX-NG) Fund issued a grant to Rob Terry to develop SmartCatch’s Digital Catch Monitoring System, or DigiCatch for short. With DigiCatch technology, fisherman can reduce by-catch by having eyes underwater to monitor their trawls.

Read the full story at the National Geographic

Decision on 2016 Maine shrimp season due Dec. 7, outlook bleak

November 13, 2015 — Interstate fishing regulators say they will meet next month to decide if there will be a fishing season for Gulf of Maine shrimp next year, though they say prospects are bleak.

The fishery is currently shut down over concerns about its low population. Fishermen haven’t been able to catch the popular food species since 2013. A panel of the Atlantic States Marine Fisheries Commission will make a decision about the coming season on Dec. 7 in Portsmouth, N.H.

The fishery was formerly a popular winter fishery for fishermen who spent the warmer months trapping lobsters.

Read the full story at Gloucester Daily Times

 

 

CALIFORNIA: Anchovy population has not collapsed

November 11, 2015 — I’ve been fishing in Monterey and along the West Coast for more than 30 years and I’m one of only about eight fishermen who fish anchovy in Monterey Bay. I’m shocked at the recent outcry in the media that claims the anchovy population has collapsed!

Environmentalists who are calling for the immediate closure of our local anchovy fishery are basing their claims on a flawed study that deliberately omits data from recent years showing a huge upswing in the anchovy population.

Read the full story at Santa Cruz Sentinel

Robert Helmick: Red Snapper bill seeks better data, better fishery

November 8, 2015 — Over the years, I, like many of you, have become frustrated with the state of fisheries management in our region. What’s especially frustrating is the lack of investment in more timely and accurate ways to collect the information we need to ensure that we keep fish populations and coastal businesses thriving. Millions of people in this area rely directly or indirectly on our fishery resources to support our families. Each management decision made by federal and state resource managers affects us financially. As it stands, sometimes those decisions must be made without sufficient, quality information.

Thankfully, there is now a solution, or at least a step forward in the right direction, before Congress. If passed, Congressman David Jolly’s (R-St. Petersburg) latest legislation, the Gulf Red Snapper Data Improvement Act (H.R. 3521), would allocate an additional $10 million annually for the collection and contribution of fishery data by recreational and charter/for-hire fishermen. Such an investment would significantly contribute to more timely and accurate federal stock assessments of reef fishes, including the Gulf’s iconic red snapper and red grouper.

Not only does the bill provide the investments needed to manage reef fish fisheries better, it includes a plan for collaboration between scientists, fishermen and decision makers.

Read the full story at the Florida Herald-Tribune