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 19^th 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 21^st Century conservationists, including Kierán Suckling, Paul Robbins, Ray Hilborn, Lisa 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.

NOAA’s FishWatch Gets a Fresh Look

The NOAA’s re-launched FishWatch website provides easy-to-understand science-based facts to help consumers make smart sustainable seafood choices.

About NOAA’s FishWatch Website

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.

Abundant Sacramento and Klamath Salmon Drive Season Options

Written By Dan Bacher 

In the Klamath River, biologists are forecasting four times more salmon than last year – and an astounding 15 times more than in 2006, according to the PFMC. The ocean salmon population is estimated to be 1.6 million adult Klamath River fall Chinook, compared to last year’s forecast of 371,100.

The Pacific Fishery Management Council (PFMC) at its meeting in Sacramento on March 7, encouraged by predictions of plentiful salmon returns along the West Coast, released three alternatives for ocean salmon fisheries including those based on Sacramento River and Klamath River stocks.

In all three alternatives, the recreational ocean salmon season is slated to open on April 7 in the Fort Bragg, San Francisco and Monterey areas, from Horse Mountain to the U.S./Mexico Border. There are three opening date alternatives – May 1, May 12 and May 26 – for the Oregon and California Klamath Management Zones.

After hearing public comment on the alternatives, the Council will make a final recommendation at their next meeting in Seattle on April 1-6.

Oceans’ acidic shift may be fastest in 300 million years

Written by Deborah Zabarenko | Environment Correspondent

The world’s oceans are turning acidic at what could be the fastest pace of any time in the past 300 million years, even more rapidly than during a monster emission of planet-warming carbon 56 million years ago, scientists said on Thursday.

Looking back at that bygone warm period in Earth’s history could offer help in forecasting the impact of human-spurred climate change, researchers said of a review of hundreds of studies of ancient climate records published in the journal Science.

Quickly acidifying seawater eats away at coral reefs, which provide habitat for other animals and plants, and makes it harder for mussels and oysters to form protective shells. It can also interfere with small organisms that feed commercial fish like salmon.

The phenomenon has been a top concern of Jane Lubchenco, the head of the U.S. National Oceanic and Atmospheric Administration, who has conducted demonstrations about acidification during hearings in the U.S. Congress.

Oceans get more acidic when more carbon gets into the atmosphere. In pre-industrial times, that occurred periodically in natural pulses of carbon that also pushed up global temperatures, the scientists wrote.

Human activities, including the burning of fossil fuels, have increased the level of atmospheric carbon to 392 parts per million from about 280 parts per million at the start of the industrial revolution. Carbon dioxide is one of several heat-trapping gases that contribute to global warming.

Read the rest of the article on Reuters.

Feds Approve Ban on Cruise Ship Sewage Discharge

“This is a great day for the California coast, which is far too precious a resource to be used as a dumping ground,” said Senator Joe Simitian (D-Palo Alto). “This ‘No Discharge Zone’ – the largest in the nation – protects our coastal economy, our environment and our public health.”

Local beach off Crissy Field in San Francisco, CA. Courtesy of the U.S. EPA.

Written by Dan Bacher | Staff Writer

The federal government on February 9 approved a landmark California proposal banning the discharge of more than 22 million gallons of treated vessel sewage to shorelines and shallow marine waters in California every year, drawing praise from environmental and shipping industry groups alike.

U.S. EPA’s Pacific Southwest Regional Administrator Jared Blumenfeld signed a rule that will finalize EPA’s decision and approve a state proposal to ban all sewage discharges from large cruise ships and most other large ocean-going ships to state marine waters along California’s 1,624 mile coast from Mexico to Oregon and surrounding major islands.

The action established a new federal regulation banning even treated sewage from being discharged in California’s marine waters.

“This is an important step to protect California’s coastline,” said Governor Jerry Brown. “I want to commend the shipping industry, environmental groups and U.S. EPA for working with California to craft a common sense approach to keeping our coastal waters clean.”

“By approving California’s ‘No Discharge Zone,’ EPA will prohibit more than 20 million gallons of vessel sewage from entering the state’s coastal waters,” said Jared Blumenfeld. “Not only will this rule help protect important marine species, it also benefits the fishing industry, marine habitats and the millions of residents and tourists who visit California beaches each year.”

This action strengthens protection of California’s coastal waters from the adverse effects of sewage discharges from a growing number of large vessels, according to an announcement from the the U.S. EPA.

Read the rest of the story on Alternet.

USC marine biologist presents study of Redondo Beach fish kill

Millions of sardines floated to the surface at Redondo Beach's King Harbor in March 2011. (Brad Graverson/Staff Photographer)

By Melissa Pamer Staff Writer

For nearly six years, USC researchers have been studying coastal waters in Redondo Beach, waiting for an event like the one in March that left some 170 tons of dead sardines stinking up King Harbor.

As the fish kill generated global media attention and much speculation about its causes, scientists from David Caron’s lab at USC were already at work examining the evidence.

They parsed data from underwater sensors installed in the harbor in 2006 after another big fish kill the previous year. On Friday night, Caron will present their findings during a free event at Cabrillo Marine Aquarium in San Pedro.

There won’t be any jaw-dropping revelations. The explanation is very similar to that offered by Caron and other scientists in the immediate aftermath of the fish kill.

“What happened there was a low-oxygen event,” said Caron, a professor of biological sciences.

As hypothesized at the time, millions of fish swarmed into the harbor and used up all the available oxygen, essentially suffocating. It’s not really clear what drove them into the harbor.

There’s evidence from the sensors and other oceanographic data that an upwelling of cold ocean water from the deep had flowed into the marinas, lowering oxygen levels by nearly half in weeks before the fish kill, Caron said.

Read the rest of the story from the Torrance Daily Breeze.

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.

KGO-TV: FDA helps create DNA database for fish

How do you know the fish you buy is really what it’s supposed to be? The answer is often you don’t. So the U.S. Food and Drug Administration is trying to protect consumers using DNA identification. It’s a global project, and the Philippines is believed to have more types of fish than almost any place on Earth, so it’s a great place to collect specimens. ABC7 News was the only TV station to go there with American researchers working to keep our food safe.

Read the rest of the story here.

Squid Studies: Scientists Seeking and Savoring Squid

William Gilly, a professor of biology at Stanford University’s Hopkins Marine Station, embarked on new expedition this month to study jumbo squid in the Gulf of California on the National Science Foundation–funded research vessel New Horizon. This is his second blog post about the trip.

By William Gilly

SEA OF CORTEZ— As we moved up the Gulf towards Guaymas, we continued to prepare our equipment. Actually, this will be a never-ending focus for the next two weeks. A research cruise in most cases is a creation in progress, and ‘equipment’ in our case ranges from Brad Seibel’s industrial-scale plumbing system for keeping big squid alive during experiments to our collection of fishing gear to catch squid. Everything will need constant, meticulous attention.

We arrived in Guaymas mid-afternoon and collected the rest of our party by 7 pm and immediately headed out to deep water about 10 miles offshore for our first exploratory squid jigging session. We arrived around 10:00 pm at the chosen site where a finger-like canyon poked back toward Guaymas. We immediately began to catch squid, and this had a predictable effect. We believe that catching a squid automatically triggers joyful exuberance. We have seen this phenomenon hundreds of times over the last decade. If there is photo of someone frowning while holding up a squid for the camera, we would like to see it. We doubt such an image exits.

Within an hour or so we collected our target sample of 20 to 30 squid. They were lined up sequentially on deck, measured, weighed, sexed and assessed for stage of maturity. This is information is simple but vital for two main reasons.

First, it is necessary to confirm the size of animals being sampled by the scientific sonar system on board that is being used by the Oregon State group. Acoustic data collected shows the depth where the squid and their prey are, and it can also be used to calculate numbers of squid or biomass – but only if you know how large the squid are that are being sampled acoustically. This is standard fare for acoustic assessment of fin-fish fisheries around the world, but use of such methods with squid is much less widespread. Kelly Benoit-Bird’s team from Oregon State is doing pioneering work in this area, and her insights and creativity were recognized with a MacArthur award in 2010.

Read the rest at Scientific American.