Scallops collected by divers would provide additional biological information such as shell height to meat weight relationships and sex ratio that would help assess the condition of a scallop aggregation (NEFSC
The nets used by NEFSC
and NEAMAP for bottom trawl surveys are not identical, and differences include the sweeps, headline floats, number of both top and belly panels, and the mesh size of some panels (Bonzek et al.
Co-author Lisa Natanson, a fisheries biologist in the Apex Predators Program at NO's Northeast Fisheries Science Center (NEFSC
), and colleagues suggest that either white sharks are living significantly longer and growing slower in the Northwest Atlantic than either the Pacific or Indian Oceans, or longevity has been underestimated in previous studies.
Estimates of water volume ([m.sup.3]) were calculated from NEFSC
estimates of area and average depth for each region.
The successful project was the result of years of collaboration among engineers, biologists, and physical oceanographers at WHOI, and scientists at the NEFSC
Protected Species Branch in Woods Hole.
pealei are being maximally exploited by commercial fishing (NEFSC
Figure 1 shows the location of each tow across the entirety of the surfclam survey domain from 1982 to 2011 and the subdivisions of the region (DMV, NJ, LI, SNE, and GBK) historically used for assessment of the status of the stock (NEFSC
2007) and used by Zhang et al.
, who heads the advisory committee for the Woods Hole Science Community Diversity Initiative signed in 2004.
This behavior matches records of LPUE trends within the stock and the patchy dispersion of the fleet in most years (NEFSC
2013); however, the influence of vessel characteristics and captains' behavior are modest relative to the locations of ports of call, which restrict the geographic footprint exploitable by any given fishing vessel.
The one exception was goosefish, which did not have a directed fishery until the mid-1980's, and whose fishing mortality appears to have been fairly low prior to the closures (NEFSC
The EcoMon surveys are conducted six times each year by the Northeast Fisheries Science Center (NEFSC
) at 120 randomly selected stations throughout the continental shelf and slope of the northeastern US, from Cape Hatteras, N.C., into Canadian waters to cover all of Georges Bank and the Gulf of Maine.
This reference point has been used, for example, for the Atlantic surfclam Spisula solidissima (e.g., NEFSC