Sunday, 20 of May of 2012

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The 15th Annual Report to Congress on the Status of Stocks for 2011: A record number of rebuilt fisheries

Annual Report to Congress on the Status of U.S. Fisheries

 

NOAA’s Fisheries Service has released the 15th annual report to Congress on the nation’s Status of Stocks.  More than any a previous year, the Status of Stocks report for 2011 underscores the strength of the science-based management process and demonstrates we are actively turning the corner on ending overfishing and rebuilding our nation’s fisheries.  A record number of stocks were declared rebuilt in 2011, with a decrease in both categories of overfishing and overfished determinations.

 

To read more, go to Status of Stocks 2011 , where you can download a pdf of the report.

 


NOAA Proposes Removing Eastern Steller Sea Lions from Endangered Species List

Stellar Sea Lions

Juneau, AK – NOAA is proposing to remove the eastern Steller sea lion, currently deemed “threatened,” from the list of endangered wildlife, after a status review by its biologists found the species is recovering sufficiently.

“This proposal reflects the continued recovery of the eastern population of Steller sea lions and the strong conservation partnership among NOAA Fisheries, the states, the fishing industry, and other stakeholders,” said NOAA’s Fisheries Service Alaska Regional Administrator Jim Balsiger.

NOAA Fisheries began a draft status review of the eastern population, which ranges from Alaska’s Cape Suckling to California’s Channel Islands, in June 2010, and opened a 60-day public comment period. Within a few days, NOAA received two petitions, one from the states of Washington and Oregon, and the other from the state of Alaska, asking that the eastern Steller sea lion be removed from threatened status under the Endangered Species Act.

The draft status review, which was completed in March 2012, shows the eastern Steller sea lion population has met the recovery criteria outlined in the recovery plan, which was developed by NOAA Fisheries in 1992 and revised in 2008.

There were approximately 34,000 eastern Steller sea lions in 1997, when the eastern and western stocks were found to be genetically different from each other. Estimates in 2010 put the eastern population at about 70,000.

The western stock, which ranges from Alaska as far as the Russian Pacific coast, will retain its endangered status.

Read the full news release on the NOAA’s website.

 

Online Report: Profiles of North Coast Fishing Communities

Charter boats at Trinidad dock Photo: C. Pomeroy

By: Caroline Pomeroy, Cynthia J. Thomas and Melissa M. Stevens

LA JOLLA, CA – California Sea Grant is pleased to announce the availability of an online edition of “California’s North Coast Fishing Communities: Historical Perspective and Recent Trends.”

The 340-pp. technical report presents a historic, demographic and economic overview of the region’s four major fishing communities: Crescent City in Del Norte County, Trinidad and Eureka/Fields Landing in Humboldt County, and Noyo/Fort Bragg in Mendocino County.

Profiles of each community highlight major commercial and recreational fisheries, their values, fleet sizes and how they have changed over time. There is also key information on fishing infrastructure – such as docks, piers, slips, launch ramps and cold storage facilities – and market channels for local commercial catches. But perhaps the most interesting sections are those that describe the current challenges and outlooks for sustaining the fishing communities.

The report was prepared originally, with funding from the California Coastal Conservancy and NOAA Fisheries in 2010 as a resource for addressing a diversity of fishery management and policy issues. It has since been used to inform local decision-making and to evaluate some of the potential social and economic consequences of establishing marine protected areas along the North Coast.
Sorting fish at Caito Fisheries in Fort Bragg. Photo: C. Pomeroy

“It (the report) is an invaluable reference for fielding public and media requests about local fishing, because it explains the value of our fisheries to the overall port community,” said Dan Berman, Director of the Conservation Division for the Humboldt Bay Harbor, Recreation and Conservation District.

“We know what is going on at our docks,” said Eureka-based fisherman Dave Bitts, president of Pacific Coast Federation of Fishing Associations and one of the more than 180 fishery participants interviewed for the project. “What the report has done is assemble our knowledge in a way that is accessible to academics, consultants and government workers.”

Fisheries managers, both state and federal, are required to consider the social and economic impacts of regulations. “Yet, in-depth social science information on California fishing communities has been quite scarce,” said Caroline Pomeroy, a California Sea Grant marine advisor based in Santa Cruz and the lead author of the report, explaining her motivation for pursuing the research.

The full reportexecutive summary and individual community profiles can be downloaded at the California Sea Grant Extension web page or through the University of California’s eScholarship open-access repository.

California Sea Grant is part of NOAA’s National Sea Grant, a network of 32 university-based programs.

 

 


Conservation in the Anthropocene: A Breakthrough Journal Debate

In their Breakthrough Journal essay, “Conservation in the Anthropocene,” Peter Kareiva, Michelle Marvier, and Robert Lalasz showed that conservation is losing the war to protect nature despite winning the battle to create parks and game preserves. While the number of protected areas has risen, species in wild places have fallen. Conservationists must shed their 19th Century vision of pristine nature, the authors wrote, and seek a new vision, one of “a planet in which nature exists amidst a wide variety of modern, human landscapes.”

In a new Breakthrough debate, a host of passionate 21st Century conservationists, including Kierán SucklingPaul RobbinsRay HilbornLisa Hayward, and Barbara Martinez, face off with the authors over the resilience of nature, corporate partners, and the state of conservation today.

Of particular interest is the commentary submitted by Professor Ray Hilborn. You can read his response below, or click here to see Breakthrough Journal’s full debate.

 


MARINE PARKS ARE FISHY

Ray Hilborn

By Ray Hilborn

In “Conservation in the Anthropocene,” Peter Kareiva, Robert Lalasz, and Michelle Marvier argue that conservation needs to move beyond parks and protected areas. They stress that ecosystems are generally resilient to perturbation, and rather than being irreparably damaged by the slightest anthropogenic impact, ecosystems can both support biodiversity and produce sustainable goods and services. While their arguments and examples are drawn from terrestrial ecosystems, much of their article is relevant to marine ecosystems, my field of study.

Marine ecosystems are the new frontier for conservation. And much of the funding for new scientific work has been directed towards the establishment of protected areas. It’s important to note that while marine and terrestrial ecosystems share much in common, there are differences. One fundamental difference is the nature of human use. In terrestrial ecosystems, a dominant form of use is agriculture, which essentially rips out native ecosystems and replaces them with exotic species: crops, tree plantations, or grasses for grazing. Agriculture makes no pretense about preserving natural ecosystems.

In contrast, in marine ecosystems, we attempt to sustainably harvest the natural ecosystem. We leave the lower trophic levels—primary producers and most of their consumers—untouched, and exploit only the higher trophic levels. This has profound consequences. It means that even if the dreams of protecting 10 percent of the world’s ocean, as set out in the 1992 Convention on Biodiversity, were to come true, most marine biodiversity will remain outside the boundaries. The struggle to maintain biodiversity is in the total anthropocene ocean; it will never be achieved through protected areas.

The marine conservation movement has been slow to grasp this. Similarly, it has failed to see that closing areas to fishing does not eliminate fishing pressure, it simply moves it. When an area is closed, fishing efforts concentrate outside protected areas. Consequently, simple comparisons of abundance inside and outside of reserves as a measure of “success” are meaningless. The salient question to ask is what happens to the total abundance.

One study sought to answer this question by tracking trends in abundance inside and outside of a set of reserves established in the California Channel Islands.1 Of the species targeted by commercial and recreational fishing, abundance went up inside reserves and down on the outside. Since 80 percent of the habitat is outside of the reserves, the data suggest that the total abundance of the targeted fish species actually declined. The gains inside were more than offset by the decreases on the outside.

In the case of the Channel Islands reserves, the creation of a protected area had a negative impact on abundance. In many other cases, protected areas have little to no impact. Two of the most heralded successes of the marine conservation movement have been the establishment of large protected areas in the Northwestern Hawaiian Islands, and the western Pacific US territories. If the measure of success is the amount of area proclaimed as protected, these are significant achievements. But if the objective is effective protection against real threats, the achievement is less because there was little, if any, human impact in those areas before protection.

There are many threats to marine ecosystems, including oil spills, exotic species, runoff from terrestrial sources, illegal fishing, excessive legal fishing, ocean acidification, and global warming. The marine parks movement does not recognize that most “protected areas” only “protect” from legal fishing, and not much else. Advocates argue that unfished ecosystems are more resilient to environmental perturbations such as exotic species, yet the same argument, if valid, must apply to areas outside of reserves. Since fishing pressure has been redirected to unprotected areas, those ecosystems ought to be more vulnerable to the same perturbation.

Kareiva et al. argue that the new conservation “requires conservation to embrace marginalized and demonized groups,” and perhaps no group has been so demonized by the environmental movement as fishermen. Terms like “roving bandits” and “rapers and pillagers” permeate the public discussion. But luckily this is changing. The new marine conservation movement recognizes that conserving biodiversity requires more than merely controlling fishing. Progressive NGOs are working with fishing groups rather than demonizing them, a transformation that has entered into in marine conservation debates that attempt to find new solutions to the environmental impacts of fishing.

Kareiva et al. close by stating, “Protecting biodiversity for its own sake has not worked. Protecting nature that is dynamic and resilient, that is in our midst rather than far away, and that sustains human communities—these are the ways forward now.” This is as true in the marine world as in the terrestrial. There is certainly a role for protected areas. But the bulk of marine biodiversity will always be in the dynamic areas outside of them, areas that must be sustainably managed as we go forward.

Ray Hilborn is a professor in the school of Aquatic and Fishery Sciences at the University of Washington.

1. Hamilton, S. L., J. E. Caselle, D. P. Malone, and M. H. Carr. 2010. “Incorporating biogeography into evaluation of the Channel Islands marine reserve network.” Proceedings of the National Academy of Sciences of the United States of America. www.pnas.org/cgi/doi/10.1073/pnas.0908091107.

 


EDF chief hedges on key ’08 report

By Richard Gaines | Staff Writer

Doug Rader, chief ocean scientist at Environmental Defense Fund, conceded Monday his organization’s 2008 policy paper predicting a jellyfish-dominated oceanic catastrophe oversimplified the problem.

“Oceans of Abundance,” which was underwritten by the Walton Family Foundation and co-authored by NOAA Administrator Jane Lubchenco, then an EDF official, foresaw “the collapse of global fisheries in our lifetimes,” to be replaced by “massive swarms of jellyfish” — unless the wild stocks were immediately privatized and commodified for “catch share” trading in the global investment market.

EDF’s Rader was responding to a Monday Times story about the publication in the February issue of BioScience on research that found no evidence of a trend toward an explosion of the jellyfish — or “gelatinous zooplankton” — filling the void left by the removal of more complex fishes.

The team was headed by ecologist Robert Condon of the Dauphin Island Sea in Alabama and 17 other scientists.

 
Read the rest of the article on Gloucester Times.
 

An interview with ICES guest instructor Ray Hilborn

Ray Hilborn

All about Bayesian inference in fisheries science

​ICES Training Programme recently offered Introduction to Bayesian Inference in Fisheries Science, conducted by Ray Hilborn and Samu Mäntyniemi. It was attended by 26 students from 17 countries.

Ray Hilborn, one of today’s leading experts on fisheries, is a professor in the School of Aquatic and Fishery Sciences, University of Washington, specializing in natural resource management and conservation. He serves as an advisor to several international fisheries commissions and agencies as well as teaching graduate and undergraduate courses in conservation, fishery stock assessment, and risk analysis. He is author of Quantitative Fisheries Stock Assessment, with Carl Walters, and The Ecological Detective: Confronting Models with Data, with Marc Mangel.

What is Bayesian statistics?

Bayesian statistics is one variety of statistics. Depending on how you divide it, you could say there are three primary schools. Beginning statistics courses centre on the concept of the null hypothesis and whether the data support rejection of the null hypothesis; usually, statistics are reported so that the probability of the null hypothesis is false. Then, there is the probability that you can reject the null hypothesis, and that’s often called Frequentive statistics. Finally, there’s another school, the Likelihoodist, that deals primarily with the extent to which the data support competing hypotheses. It’s a more interesting statistic because it realizes that you often have multiple different hypotheses, which is interesting to the extent that the data support the different hypotheses.

Bayesian statistics is, in a sense, much like the Likelihoodist, but it goes the additional step of actually assigning probabilities to competing hypotheses. The reason that’s so important is that, when you are giving advice to decision-makers, they want to know what’s the chance that something will happen. It turns out that Bayesian statistics is the only form of statistics that philosophically claims that they are probabilities. Going back – I guess I first ran into Bayesian statistics about 35 years ago – you find that Bayesian statistics really dominated business schools because they were built around decision-making.

Read the rest here.



FORUM: Anti-fishing proposal would shipwreck balanced marine management

By D.B. Pleschner

North County Times

If you didn’t know better, you might think that forage fish like sardines and squid are on the brink of destruction in California.

That’s what some activists imply. However, nothing could be further from the truth.

California’s coastal pelagic “forage” fisheries are the most protected in the world, with one of the lowest harvest rates.

In addition to strict fishing quotas, the Marine Life Protection Act (MLPA), has implemented no-take reserves, including many near bird rookeries and haul-out sites to protect forage for marine life.

But activists are pushing even more restrictions in the form of Assembly Bill 1299.

California already provides a science-based process to manage forage species. The federal Pacific Fishery Management Council is also developing a California Current Ecosystem Management Plan, covering the entire West Coast, not just California state waters. Further, the federal Coastal Pelagic Species Fishery Management Plan that governs these fish adopted an ecosystem-based management policy more than a decade ago.

To initiate new legislation like AB 1299 as if no regulation exists is fiscally irresponsible and disrespectful of California’s management history.

The National Marine Fisheries Service voiced concern about the bill’s redundancy and overlap with federal management, pointing out that it could actually impede ecosystem-based management.

AB 1299 won’t protect forage species because virtually all range far beyond California state waters, which only extend three miles from shore.

But the bill does jeopardize the future of California’s historic wetfish fisheries, the backbone of California’s fishing economy. AB 1299 restricts California fishermen unfairly, because virtually all the forage species listed are actively managed or monitored by the federal government and most species are harvested along the entire West Coast.

In this economic crisis, why would California squander millions of dollars —- and sacrifice thousands of jobs —- on an unfunded mandate that duplicates existing laws?

Apparently this doesn’t matter to activists, whose rhetoric claims that overfishing is occurring in California now and a change is needed.

AB 1299 proponents have made many false claims about forage species. For example, they referenced a National Oceanic and Atmospheric Administration evaluation of the California Current Ecosystem, predicting a downward trend for some marine life, including squid, but failed to explain that this report was simply a draft. The evaluation excluded southern Californiawaters, where 80 percent of the squid harvest occurs. A record spawning event also occurred in 2010.

And consider sardines. After their decline in the 1940s, fishery managers instituted an ecosystem-based management plan that accounts for forage needs before setting harvest quotas, and reduces quotas in concert with natural declines in the resource. The harvest quota for the West Coast plummeted 74 percent from 2007 to 2011.

But activists embellished a NOAA graph to “prove” their claim that the current sardine population decline was due to overfishing. The marine scientist who developed the graph pointed out their error, stating, “You can rest assured that the U.S. has not exceeded the overfishing limit based on the rules in place today.”

In fact, the majority of California’s fishing community —- municipalities, harbor districts, recreational and commercial fishing groups, seafood companies and knowledgeable fishery scientists —- oppose AB 1299, seeing it as a disingenuous attempt to curtail sustainable fisheries unnecessarily.

D.B. Pleschner is executive director of the California Wetfish Producers Association, a nonprofit designed to promote sustainable wetfish resources.


Florida Fishermen Catch 25-Foot-Long Giant Squid, Offering Rare Opportunity to Study Elusive Creature

By Alisa Opar

Giant squid are creatures of the deep ocean. So it was quite a surprise when recreational fishermen spotted one floating on the surface some 12 miles off of Florida’s Jensen Beach on Sunday. They hauled the 25-foot-long dying invertebrate on to their 23-foot-long boat. “I thought we definitely need to bring it in, because no one’s going to believe us if we don’t,” said Robert Benz, who was fishing with friends Joey Asaro and Paul Peroulakis. “I didn’t want to leave it out there and just let the sharks eat it.”

University of Florida researcher Roger Portell injects preservative into a 25-foot-long giant squid Monday night. Photo: Jeff Gage, University of Florida/Florida Museum of Natural History

On Monday scientists at the University of Florida’s Florida Museum of Natural History preserved the squid, which died shortly after it was found. John Slapcinsky, the museum’s malacology collection manager, explained that giant squid reproduce just once in their lifetime, and then often become lethargic and die slowly. That’s probably what happened to this animal, as it was discovered barely alive near the surface. The finding offers a rare opportunity to learn more about the elusive creatures, which can grow to be 60 feet long, top 1,000 pounds, and have pigment cells on their white-and-red skin that allow them to rapidly change color, presumably for communication or camouflage.

Read the rest here.


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Fishery Landings by West Coast County, 2006-2010

Maps were created (view pdf) that present rankings by west coast counties according to the major “management groups” (grouping individual species codes) used in the PacFIN database in terms of ex-vessel revenue for the recent 5-year period, 2006-2010.

These management groups accord with the four Pacific Council fishery management plans (coastal pelagic species, groundfish, highly migratory species, and salmon) and four additional categories (crab, other, salmon, shellfish, and shrimp).

The data were obtained by a query grouping landings by county codes in the database. The PacFIN county codes were then matched to FIPS county codes for use in ArcGIS. (The PacFIN county table includes several codes that are not counties, e.g., “Columbia River below Bonneville Dam.”

In data preparation revenue for all these codes were grouped into a single record, which is not displayed in the figures or the table below.)

Counties were used as the geographic units for two reasons. First, counties are a useful geographic unit for producing choropleth maps. Second, grouping by county makes it easier to compare landings data to demographic data (available from the census or other sources) in future analyses.

Read the post at the Pacific Fishery Management Council’s site.


Biodiversity Loss in the Ocean: How Bad Is It? [research paper]

Coral and fishphoto © 2009 gorfor | more info (via: Wylio)

Science 1 June 2007:
Vol. 316 no. 5829 pp. 1281-1284
DOI: 10.1126/science.316.5829.1281b

The Research Article Impacts of biodiversity loss on ocean ecosystem services By B. Worm et al. (3 Nov. 2006, p. 787) projects that 100 of seafood-producing species stocks will collapse by 2048.

The projection is inaccurate and overly pessimistic.

Worm et al. define collapse as occurring when the current year’s catch is <10 of the highest observed in a stock’s time series. However, fish catch is rarely an adequate proxy for fish abundance, particularly for rebuilding stocks under management. A variety of biological, economic, and social factors and management decisions determine catches; low catches may occur even when stocks are high (e.g., due to low fish prices or the effects of restrictive management practices), and vice versa.

The inadequacy of Worm et al.‘s abundance proxy is illustrated by the time series of data for Georges Bank haddock (Melanogrammus aeglefinus). The highest catch for haddock occurred in 1965 at 150,362 tons (1). This catch occurred during a period of intense domestic and international fishing (1).

In 2003, haddock catch was 12,576 tons, or 8 of the time series maximum. Under the Wormet al. definition, the stock would be categorized as collapsed in 2003. However, stock assessment data (1) estimate the total magnitude of the spawning biomass in 2003 to be 91 of that in 1965. Comparing the estimate of spawning stock biomass in 2003 to the level producing maximum sustainable yield (MSY), the stock was not even being overfished in 2003 (2).

Get the whole report here.