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Better science for better fisheries management
Date:5/19/2014

Jon Grabowski, a marine science and fisheries expert at Northeastern University's Marine Science Center in Nahant, Massachusetts, has been working with other fisheries scientists as well as economists, social scientists, and policy makers to determine the best strategies for dealing with all of the Northeast region's fisheries that impact habitat, which includes cod, haddock, cusk, scallops, clams and other fish that live near the sea floor and are of significant socioeconomic value to the region.

In research published online last month in the journal Reviews in Fisheries Science & Aquaculture, Grabowski found that mobile fishing gear such as trawls and dredges that drag along the bottom cause more damage to areas inhabited by groundfish than stationary gear like traps and gillnets. They also found that larger geological features, such as cobble and boulders, are more susceptible to damage and take longer to recover than sand and mudafter all, some of these geological features have taken millennia to form.

"We worry most about the components of habitats that are highly susceptible to any of these gears and that have very long recovery times. Those are the kinds of persistent and severe impacts that we'd want to manage against," Grabowski said. His research focuses on the many interconnecting arms of fisheries science and management.

Cod fishing in New England has steadily declined over the past three decades. It's estimated that hundreds of people have lost their jobs as a result and that continued failure to rebuild the fishery could cost the region's economy a total of $200 million, according to the New England Fishery Management Council.

But the big concern is really one of culture, according to Grabowski. "You're talking about an iconic fishery. Cod has been fished in these waters going back hundreds and hundreds of years," said Grabowski, an associate professor of marine and environmental science. "You can go back a thousand years to the Basques coming over to fish these historically really productive grounds," he said.

Grabowski's research is first in a series of articles where Grabowski and his colleagues examine the vulnerability of groundfish habitats to various types of fishing gear. "We reviewed how all the different geological and biological components of habitat are affected by these different types of gear," Grabowski said. The committee examined how easily these habitats can be damaged and how long it takes for them to recover.

The team uses these results to develop a framework that will provide fisheries managers a standardized method for identifying the most vulnerable habitats. Their work is being used as part of the Second Habitat Omnibus to inform redesigning of the fishing closures on Georges Bank and in the Gulf of Maine.

Grabowski said there are many stakeholders involved when dealing with complex challenges like New England's fishery problems. His approach focuses on interdisciplinary solutions to these challenges by examining not just the basic ecology of these species and their habitats, but also the ways in which the coastal communities are reacting to how fisheries are managed.

Grabowski compared himself to a coda generalist in the marine worldsince he works across traditional institutional and sectorial boundaries to identify the best strategies and find ways to effectively implement them.

"At the end of the day," Grabowski said, "if we really want to do something about sustainability, we must be doing the kinds of things that involve policy and help shape the way society self regulates."


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Contact: Casey Bayer
c.bayer@neu.edu
617-373-2592
Northeastern University
Source:Eurekalert  

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