Category: New & Notable

Law That Regulates Shark Fishery Is Too Liberal

Shark fins are worth more than other parts of the shark and are often removed from the body, which gets thrown back into the sea. To curtail this wasteful practice, many countries allow the fins to be landed detached from shark bodies, as long as their weight does not exceed five per cent of the total shark catch. New University of British Columbia research shows that this kind of legislation is too liberal.

A study published this week in the journal Fish Biology analyzes the fin to body weight ratios for 50 different shark species.  The authors find the average fin to body mass is three per cent  – considerably lower than the five per cent ratio currently legislated by the EU and other countries.

“The five percent ratio provides an opportunity to harvest extra fins from more sharks without retaining 100 per cent of the corresponding shark carcasses,” says Sea Around Us Project researcher Leah Biery, lead author of the study. “It does not prevent waste or overfishing, as the law intended.”

Currently, the EU and eight other countries use at least a five per cent shark fin to body weight ratio for landed catch. Only 59 countries in the world have any legislation related to sharks.

“Sharks are sensitive to overfishing and it’s embarrassing how little we have done to protect them,” says Daniel Pauly, principal investigator of UBC’s Sea Around UsProject and co-author of the study. “We would like to see more science in the management and protection of sharks in the coming years.”

Researchers estimate about 26 to 73 million sharks are killed each year to feed the growing demand for shark fin.  Sharks are sensitive to overfishing because they often grow slowly, mature later, and have very few offspring.

Canada MP Fin Donnelly introduced a bill last December that would ban the import of shark fin into Canada, but it has not been voted on. The Canadian municipalities of Brantford, Mississauga, Oakville, Pickering, London and Toronto have all banned the sale and possession of shark fin.

Fish Farms from Space: The Ground Truth from Google Earth

The Great Wall of China is not the only thing you can see from space. Fish farming cages are clearly visible through Google Earth’s satellite images and University of British Columbia researchers have used them to estimate the amount of fish being cultivated in the Mediterranean.

The study, published yesterday in the online journal PLoS ONE, is the first to estimate seafood production using satellite imagery.

“Our colleagues have repeatedly shown that accurate reporting of wild-caught fish has been a problem, and we wondered whether there might be similar issues for fish farming,” says lead author Pablo Trujillo, an Oceans Science Advisor for Greenpeace International, who conducted the study while a research assistant at the UBC Fisheries Centre.

“We chose the Mediterranean because it had excellent satellite coverage and because it was of personal interest,” says Chiara Piroddi, co-author and an ecosystem modeler at the UBC Fisheries Centre. “We hand counted 20,976 finfish cages and 248 tuna cages, which you can differentiate due to their extremely large size – each tuna cage measured at more than 40 metres across.”

Almost half the cages were located off the coast of Greece and nearly one-third off of Turkey – and both countries appear to underreport their farmed fish production. The researchers note that not all areas had full satellite coverage – for instance, images were missing for large portions of the coasts of France and Israel, for reasons the authors do not fully understand.

Combining cage counts with available information on cage volume, fish density, harvest rates, and seasonal capacity, the research team estimated ocean finfish production for 16 Mediterranean countries at 225,736 tonnes (excluding tuna). The estimate corresponded with government reports for the region, suggesting that, while there are discrepancies at the level of individual countries, overall, the Mediterranean countries are giving accurate counts.

“The results are reassuring, and the methods are inspiring,” says co-author Jennifer Jacquet, a post-doctoral researcher with UBC’s Sea Around Us Project. “This shows the promise of Google Earth for collecting and verifying data, which means a few trained scientists can use a freely available program to fact-check governments and other large institutions.”

Trujillo adds that Google Earth, with its high-resolution images and consistent time series, can be a powerful tool for scientists and non-governmental organizations to monitor activities related to ocean zoning and capture fisheries.

See some coverage of the work at The Scientist.

The fishers of Jamaica are making change mon!

This is an article by Sea Around Us researcher Stephanie Lingard, and also appeared in the September/October newsletter.

Jamaica, the land of wood and water, famous for its warm people, reggae music, jerk chicken and overfished reefs. Jamaica lives up to its reputation in every aspect. The people are some of the kindest, warmest and funniest you could hope to meet in your life. The landscape is an impossibly beautiful green, the food is flavourful, and… the reefs are desolate. However, there are many reasons to expect a better future for Jamaica’s fishers and fishes.

During the winter of 2010 and spring of 2011 I was given the opportunity to live in Jamaica on an internship funded by the Canadian International Development Agency (CIDA). Having worked at the Fisheries Centre for the summer of 2010, I was delighted to find I would be working alongside the Fisheries Division of Jamaica’s Ministry of Fisheries and Agriculture. I was working with an initiative called Improving Jamaica’s Agricultural Productivity Project (IJAPP). The fisheries aspect of the project, funded in part by CIDA, had three focus points: market facilities, enhancement of fisheries resources through artificial reefs, and capacity building with fishers in six south coast fishing villages. The project also worked to establish co-management bodies within each of the fishing villages. These bodies would be responsible for managing the new markets, and community organization tasks. Capacity building included workshops concerning all aspects of life: money management, conflict resolution, ecological knowledge, fisheries management, and safety at sea, to name a few. During the workshops, fishers faces lit up, and they absorbed the information eagerly. Community members were deeply thankful to have the opportunity to learn how they could care for their resources and improve their livelihoods. Working with fishers during workshops was by far the most rewarding aspect of my time there, and I’m happy to report: progress is being made.

A long list of challenges is faced by the ecosystems of Jamaica: invasive lionfish, pollution, overfishing, destructive fishing habits, lack of regulation, hurricanes, and coral disease. Initially, working among these challenges made it difficult to stay positive and understand why we were building fish markets while previously donated gear sheds, from the European Union, sat unused. Why were new reefs, sure to be targeted by destructive fishing practices, being built? In my mind, enforcement of fish sanctuaries (MPAs), and other regulations were clearly a priority. I often asked myself what the solution was to the myriad of problems, often feeling like I had nothing to offer the fishers or the fish.

Then, as time went on, my attitude changed. The more I became involved with the fishing community, and after meeting fishers and fisheries officers, I felt things, like my attitude, could be changed. The fishers themselves provided inspiration. Despite hauling up empty pots (Antillean Z traps) day after day, they continued to smile and laugh. At community meetings hosted by the project, many fishers were outspoken with other community members about the need to stop dynamite fishing, and other destructive practices. Many fishers I spoke with also expressed that, while they may not see the benefits of their changed behaviour, it was important to keep working at it for the next generation of fishers. The fisheries division staff, Dr. Karl Aiken (the Jamaican fish expert with the University of the West Indies), and members of local NGOs provided constant inspiration as well. All of these dedicated people have worked for years amongst funding cuts, broken government promises, destructive fishers, and natural disasters, and yet they persist in good spirits.

My friend Nakhle Hado, who works with Food for the Poor, teaches lionfish handling workshops around the island. He works tirelessly with fishers to teach them less destructive fishing techniques (like deep water handlining vs. trap fishing), as well as encouraging them to catch lionfish. Along side this work, he promotes a market for lionfish by selling it on the menu of his family’s restaurant in Kingston. The fried lionfish is amazing! The trend appears to be catching on as I had several fishers tell me they prefer lionfish to other types of fish, and that they have customers who will come to them specifically for the prickly fish. In time, it may just become a Jamaican delicacy.

The Nature Conservancy is currently working with the Fisheries Division to set up enforcement of the Pedro Bank Fish Sanctuary. Pedro Banks is a large fishing ground with several small sandy cays which host a transient community of fishers approximately 60 km off the south coast of Jamaica. Although funding is slow to come through, all are hopeful this will commence before the end of this year, or in early 2012.

The Oracabessa Fish Sanctuary was finally launched on October 9, 2011, Dr. Aiken giving me the good news. There is a wonderfully dedicated group of local NGOs working to get the rest of the 8 designated fish sanctuaries off the ground: Caribbean Coastal Areas Management Foundation, Blue Fields Bay Fishermen’s Friendly Society, St. Mary Fishermen’s Cooperative, Oracabessa Foundation, The Negril Coral Reef Preservation Society, The Montego Bay Marine Park Trust, Fisheries Division, Alloah fisher group and Business Community.

Despite several decades of hardships, and slow-moving political action, there is a strong community of fish-friendly organizations and individuals in Jamaica. I hope the return of the herbivorous long-spined sea-urchin (Diadema antillarum), combined with the much anticipated launch of the fish sanctuaries, and a burgeoning lionfish market signal a recovery of Jamaica’s marine resources.

New Study Published in MEPS about Marine Predator Declines

Iconic marine predators such as sharks, tunas, swordfish, and marlins are becoming increasingly rare under current fishing trends, according to a new study published in the journal Marine Ecological progress Series. In half of the North Atlantic and North Pacific waters under national jurisdiction, fishing has led to a 90-per-cent decrease in top predators since the 1950s, and the impacts are now headed south of the Equator. The study was lead authored by former Sea Around Us Project M.Sc student Laura Tremblay-Boyer. The study is available here and the press release is here.

Analysis of FAO Report on Fisheries Statistics

Global fisheries statistics must be viewed with a critical eye. Fisheries landings data are collated by FAO and contributed by all member countries, which have varying resources and motives. In a new paper recently published in Marine Policy, Daniel Pauly and Rainier Froese take a close look at FAO’s State of the Worlds Fisheries and Aquaculture’ (SOFIA) report from 2010 and discuss the FAO’s history, as well as the implications, imperfections, and possible improvements to be made to fisheries data.

Pauly and Froese are both complimentary and critical. They point out the misleading use of the word ‘stability’ in the report as it refers to global catch data from 2005-2008, and point out that even if that global catches are indeed stable, fishing effort is rapidly expanding. They note the FAO’s acceptance of scientific data that showed China does not know how much its fisheries catch, and the large degrees of uncertainty around global trends this problem creates. Pauly and Froese point approvingly to SOFIA’s position on assemblage overfishing and their statement: ‘ We do not disagree that a general decline in mean trophic level of marine landings is likely to have occurred in many regions.’ Finally, Pauly and Froese call for cooperation between institutions, e.g., U.N. technical organization and civil society, as represented by universities and non-government organizations, to improve SOFIA reports and potentially the management of fisheries globally.

To read the full article click here.

Citation: Pauly, D. & Froese, R. 2012. Comments on FAO’s State of Fisheries and Aquaculture, or ‘SOFIA 2010’ Marine Policy 36: 746-752.