Twenty-three experts involved in the study “Antarctica and the strategic plan for biodiversity,” recently published in PLoS Biology, debunked the popular view that Antarctica and the Southern Ocean are in a better environmental shape than the rest of the world. In fact, the difference between the status of biodiversity in the region and planet Earth as a whole is negligible.
Some artisanal fleets in West Africa have grown so much in terms of number of boats, vessel size and capacity, and the aggregate engine power that they deploy that they have become comparable to the smaller industrial fleets operating in the region.
A new study by the Sea Around Us project reveals that, in the past 60 years, total artisanal fishing effort in the waters that extend from the coast of Morocco to the coast of Angola has increased by 10-fold.
New research supports the creation of more marine reserves in the world’s oceans because, the authors say, fish can evolve to be more cautious and stay away from fishing nets.
The research suggests that by creating additional “no-take” areas, some fish will stay within marine reserves where they are protected from fishing. While other fish will move around the ocean, these less mobile fish will continue to live in the protected areas, pass this behaviour on to their offspring, and contribute to future generations, increasing the overall stock.
Every year for the past 60 years, an average of 20 million tonnes of fish caught in the global ocean have not been used to nourish people.
A new study emerging from the Sea Around Us project at the University of British Columbia’s Institute for the Oceans and Fisheries reveals that from 1950 to 2010, 27 per cent of commercial marine landings were diverted to uses other than direct human consumption.
This trend has not changed in recent years and it poses serious questions regarding food security, as most of the diverted fish are classified as food-grade or prime food-grade.
The new estimate, released today in Nature Communications, puts the annual global catch at roughly 109 million metric tons, about 30 per cent higher than the 77 million officially reported in 2010 by more than 200 countries and territories. This means that 32 million metric tons of fish goes unreported every year, more than the weight of the entire population of the United States.
Researchers led by the Sea Around Us, a research initiative at the University of British Columbia supported by The Pew Charitable Trusts, and Vulcan Inc., attribute the discrepancy to the fact that most countries focus their data collection efforts on industrial fishing and largely exclude difficult-to-track categories such as artisanal, subsistence, and illegal fishing, as well as discarded fish.
“The world is withdrawing from a joint bank account of fish without knowing what has been withdrawn or the remaining balance,” said UBC professor Daniel Pauly, a lead author of the study and principal investigator of the Sea Around Us. “Better estimating the amount we’re taking out can help ensure there is enough fish to sustain us in the future.”
Accurate catch information is critical for helping fisheries officials and managers understand the health of fish populations and inform fishing policies such as catch quotas and seasonal or area restrictions.
For the Nature Communications study, Pauly, his co-author Dirk Zeller, and hundreds of their colleagues around the world reviewed catch and related data from more than 200 countries and territories. Using a method called catch reconstruction, they compared official data submitted to the UN Food and Agriculture Organization (FAO) with estimates obtained from a broad range of sources, including academic literature, industrial fishing statistics, local fisheries experts, fisheries law enforcement, human population, and other records such as documentation of fish catch by tourists.
“This groundbreaking study confirms that we are taking far more fish from our oceans than the official data suggest,” said Joshua S. Reichert, executive vice president and head of environment initiatives for Pew. “It’s no longer acceptable to mark down artisanal, subsistence, or bycatch catch data as a zero in the official record books.
“These new estimates provide countries with more accurate assessments of catch levels than we have ever had,” said Reichert, “along with a far more nuanced portrait of the amount of fish that are being removed from the world’s oceans each year.”
“Data are integral to maintaining global fisheries,” said Raechel Waters, senior program officer for ocean health for Vulcan Inc. “Without an accurate understanding of fish catch, we risk underreporting or misreporting, which can handicap countries in their efforts to implement effective fisheries policy and management measures.
“This is particularly important for countries that do not have the resources to conduct comprehensive fishery assessments,” said Waters.
The Sea Around Us is a research initiative at The University of British Columbia that assesses the impact of fisheries on the marine ecosystems of the world, and offers mitigating solutions to a range of stakeholders. The project was initiated in collaboration with The Pew Charitable Trusts in 1999, and in 2014, the Sea Around Us also began a collaboration with Vulcan Inc to provide African and Asian countries with more accurate and comprehensive fisheries data.
A copy of the paper is available at: http://www.nature.com/ncomms/2016/160119/ncomms10244/full/ncomms10244.html
Documentary trailer: The Missing Fish (3 min)
Valentina Ruiz Leotaud, the Sea Around Us, +1 604-827-3164, firstname.lastname@example.org
Heather Amos, University of British Columbia, +1 604-822-3213; cell;+1 604-828-3867 email@example.com
New Sea Around Us research has found drastic decline in the monitored portion of the global seabird population.
The paper, published in PLoS ONE, reports that the monitored portion of the global seabird population decreased overall by 69.7 per cent between 1950 and 2010.
According to Michelle Paleczny, a lead author of the paper, and recent graduate of the zoology program at UBC, these findings likely reflect a global trend because of the large and representative sample. A decline this drastic can cause changes in island and marine ecosystems in which seabirds play a variety of vital roles.
“Decline in seabird abundance stands to disrupt natural processes in island and marine ecosystems in which seabirds play an important role — by acting as predators, scavengers, cross-ecosystem nutrient subsidizers, and ecosystem engineers,” Paleczny says.
In order to investigate global patterns of seabird population data, the researchers assembled a global database of seabird population size records and applied multivariate autoregressive state-space (MARSS) modeling to estimate the global path of all seabird populations with sufficient data. They obtained data from primary sources including journal articles, books, and unpublished reports.
Several human activities are known to threaten seabird populations, including entanglement in fishing gear, overfishing of food sources, climate change, pollution, disturbance, direct exploitation, development, energy production, and introduced species. Seabird populations are strongly affected by threats to marine and coastal ecosystems, and can indicate the status of marine ecosystem health.
“Knowing this information helps us to measure and assess the overall effect that human activities and threats have had on seabirds and marine ecosystems over time,” Paleczny explains.
You can read the full report here
Researchers with UBC’s Sea Around Us project have launched a new web platform at www.seaaroundus.org that provides the first comprehensive coverage of both reported and unreported fish caught by every country in the world.
It reveals that official catch reports considerably underestimate actual catches around the world. For example, researchers found there was considerable unreported foreign fishing between 1950 and the early 1970s on Canada’s East coast. In fact, more than half of fish caught were unreported at one point. Much of this ‘catch’ consisted of so-called discards.
UBC professor Daniel Pauly and Dirk Zeller plan to publish a global estimate of fisheries catch in a peer-reviewed paper.
“The new Sea Around Us data have significant global scope and are long awaited by many groups worldwide,” said Zeller, senior researcher and project manager for Sea Around Us. “Accurate estimates are important for policy makers and fisheries managers to make economical and sustainable decisions about our fishing policies and fisheries management.”
The new data combine estimates of unreported catches — determined through extensive literature searches, consultation with local experts, and calculation of discarded fish — with officially reported data for small and large-scale fisheries for every country. The data emerged from a decade-long catch reconstruction project.
“We know these data will have major global impacts and now they are accessible in a visual, simplified and comprehensive way,” Pauly said.
Accurate catch data provide important insights into fisheries, fish populations and underlying ecosystems, and such data can have economic impacts.
The Sea Around Us is currently funded by The Paul G. Allen Family Foundation. This is the first time the project has released new data in over five years. It can be accessed at www.seaaroundus.org
About UBC’S Sea Around Us
The Sea Around Us was initiated in 1999, and aims to provide integrated analyses of the impacts of fisheries on marine ecosystems, and to devise policies that can mitigate and reverse harmful trends while ensuring the social and economic benefits of sustainable fisheries. Sea Around Us has assembled global databases of catches, distributions of fished marine species, countries’ fishing access agreements, ex-vessel prices, marine protected areas and other data – all available online.
Sea Around Us is a long-standing collaboration between the University of British
Columbia and The Pew Charitable Trusts, and since 2014 is supported by The Paul G. Allen Family Foundation.
About The Paul G. Allen Family Foundation
Founded in 1988, the Paul G. Allen Family Foundation is dedicated to transforming lives and strengthening communities by fostering innovation, creating knowledge and promoting social progress. The Sea Around Us program is another example of how the Foundation supports the use data and technology to inform conservation priorities and actions.
View this press release on UBC News here
New Sea Around Us research estimates Panama’s total fish catches were vastly under-reported — by almost 40 per cent — between 1950 and 2010.
The recent study, led by Sea Around Us’ Sarah Harper and co-authored by Kyrstn Zylich, Dirk Zeller and Smithsonian Tropical Research Institute’s Héctor Guzmán, was published in Marine Fisheries Review’s most recent issue.
The research not only found a high number of fish — including tuna, shellfish and shark — taken from Panama’s waters was unaccounted for, but it also revealed data deficiencies.
“Fisheries catch data collection, as is the case in many countries, focus mainly on large-scale operations and the commercial sector under the assumption that small-scale fisheries are insignificant,” Harper said. “This catch reconstruction highlights the substantial under-reporting of small-scale catches.”
Other major components missing from official Panamanian data include discarded bycatch, which is often overlooked but can be considerable, according to Harper. Poor fisheries monitoring, data collection and lack of human resources to spot errors also contribute to data deficiencies.
Accurate catch accounts are important to the national economy, especially in Panama, where fish like lobster and shrimp are major exports.
“Given the important economic and food security contributions of Panama’s fisheries, efforts must be made by fisheries governing bodies to improve catch data collection and reporting,” Harper said.
One of our PhD students Dyhia Belhabib headed a study that revealed catch numbers in Senegal have been misreported largely due to high levels of illegal fishing.
Belhabib’s research —a joint project with Sea Around Us and US Agency for International Development— found that the number of industrial catches is vastly underestimated. She worked with the DPM, World Wildlife Fund and data from the U.S. Navy, in the study that began in March 2012. It was published earlier this month.
In effect, the study has increased Senegal’s awareness of illegal fishing vessels. Earlier this month, they arrested members of an illegal Russian vessel for fishing in Senegalese waters.
Belhabib’s report stated that official reports and fishers’ accounts document the presence of illegal vessels—which are thought to be a major cause of problems for Senegalese artisanal fisheries.
Belhabib noted that artisanal fisheries have increased in both time and space.
“They go out more often and travel further away,” she said. “It’s been undetected for years.”
Senegalese artisanal fishing numbers have been reported at 80 per cent, but Belhabib’s research discovered the numbers are closer to half artisanal fishing and half industrial.
She stressed the importance of the findings, as they’ll help fishery decision-makers make more informed policy choices.
“These findings can help solve the problems of over-capacity in Senegalese waters,” she said.
You can read more about the study here:
See press on illegal fishing in Senegal here:
In the Persian Gulf, large, semi-permanent fish traps take advantage of tidal differences to catch a wide variety of marine species. These traps, called fish weirs, have been used around the world for thousands of years, but only recently have researchers quantified what they catch using imagery captured from space.
In a new study published today in the ICES Journal of Marine Science, Sea Around Us Project researchers used satellite imagery from Google Earth to estimate that there were 1,900 fishing weirs along the coast of the Persian Gulf during 2005 and that they caught approximately 31,000 tonnes of fish that year. This catch is almost six times larger than the official amount (5,260 tonnes) reported by the seven countries in the region to the United Nation’s Food and Agriculture Organization.
This study highlights the utility of Google Earth and other remote sensing tools for validating catch statistics and fisheries operations in general.
You can find out more about the study here:
Press release from the University of British Columbia,
Web feature summarizing the study from The Pew Charitable Trusts,
Journal article published in ICES Journal of Marine Science.
Al-Abdulrazzak D and Pauly D (2013) Managing fisheries from space: Google Earth improves estimates of distant fish catches. ICES Journal of Marine Science. doi:10.1093/icesjms/fst178