Christopher F.G. Jeffrey
National Oceanic and Atmospheric Administration
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Transactions of The American Fisheries Society | 2008
Matthew S. Kendall; Laurie J. Bauer; Christopher F.G. Jeffrey
Abstract Distribution, habitat preference, and size structure were examined for three commonly targeted bottom fishes (black sea bass Centropristis striata, gag Mycteroperca microlepis, and scamp M. phenax) in the southeastern United States. Fish communities and bottom characteristics of limestone ledges within Grays Reef National Marine Sanctuary (located centrally along the southeastern continental shelf) were surveyed. Black sea bass occurred at 98% of the ledges and were evenly distributed throughout the sanctuary in much-higher numbers than either gags or scamps, which were concentrated at only 11% of the ledges. Gag or scamp presence was most strongly related to height of ledge undercut, whereas abundance of black sea bass was best explained by percent cover of sessile biota. In addition, lower abundance of black sea bass occurred in the presence of either gags or scamps, which are generally larger than black sea bass. In all three species, an abrupt decline in abundance was observed for size-class...
Environmental Monitoring and Assessment | 2014
Anthony S. Pait; S. Ian Hartwell; Andrew L. Mason; Robert A. Warner; Christopher F.G. Jeffrey; Anne M. Hoffman; Dennis A. Apeti; Simon J. Pittman
The St. Thomas East End Reserves or STEER is located on the southeastern end of the island of St. Thomas, USVI. The STEER contains extensive mangroves and seagrass beds, along with coral reefs, lagoons, and cays. Within the watershed, however, are a large active landfill, numerous marinas, resorts, various commercial activities, an EPA Superfund Site, and residential areas, all of which have the potential to contribute pollutants to the STEER. As part of a project to develop an integrated assessment for the STEER, 185 chemical contaminants were analyzed in sediments from 24 sites. Higher levels of chemical contaminants were found in Mangrove Lagoon and Benner Bay in the western portion of the study area. The concentrations of polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethane (DDT), zinc, copper, lead, and mercury were above a NOAA Effects Range-Low (ERL) sediment quality guideline at one or more sites, indicating impacts may be present in more sensitive species or life stages. Copper at one site in Benner Bay was above a NOAA Effects Range-Median (ERM) guideline indicating effects on benthic organisms were likely. The antifoulant boat hull ingredient tributyltin (TBT) was found at the third highest concentration in the history of NOAA’s National Status and Trends (NS&T) Program, which monitors the nation’s coastal and estuarine waters for chemical contaminants and bioeffects. The results from this project will provide resource managers with key information needed to make effective decisions affecting coral reef ecosystem health and gauge the efficacy of restoration activities.
Caribbean Journal of Science | 2009
Anthony S. Pait; Christopher F.G. Jeffrey; Chris Caldow; David R. Whitall; S. Ian Hartwell; Andrew L. Mason; John D. Christensen
Abstract. Coral (Porites astreoides) from eight sites in southwest Puerto Rico were analyzed for approximately 150 chemical contaminants, to provide a preliminary characterization of environmental contamination in the corals, and assess the relationships between chemical contamination in corals and adjacent sediments. Overall, the concentration of PAHs (polycyclic aromatic hydrocarbons) and PCBs (polychlorinated biphenyls) detected in the limited number of coral samples collected were comparable to concentrations found in sediments. However, the concentration of a chemical contaminant (e.g., PAHs) in the corals at a site was often different from what was found in adjacent sediments. The level of PCBs and DDT (dichlorodiphenyltrichloroethane) in the corals appeared higher just outside of Guanica Bay, and there was some evidence of a downstream concentration gradient for these two contaminant classes. The trace elements copper and zinc were frequently detected in Porites astreoides, and the concentrations were usually comparable to those found in adjacent sediments. Chromium was an exception in that it was not detected in any of the coral samples analyzed, although it was detected in all of the sediment samples.
PLOS ONE | 2010
C. Mark Eakin; Jessica A. Morgan; Scott F. Heron; Tyler B. Smith; Gang Liu; Lorenzo Álvarez-Filip; Bart J. Baca; Erich Bartels; Carolina Bastidas; Claude Bouchon; Marilyn E. Brandt; Andrew W. Bruckner; Lucy Bunkley-Williams; Andrew D. S. Cameron; Billy D. Causey; Mark Chiappone; Tyler Christensen; M. James C. Crabbe; Owen Day; Elena de la Guardia; Guillermo Diaz-Pulido; Daniel DiResta; Diego L. Gil-Agudelo; David S. Gilliam; Robert N. Ginsburg; Shannon Gore; Hector M. Guzman; James C. Hendee; Edwin A. Hernández-Delgado; Ellen Husain
Gulf and Caribbean Research | 2003
John D. Christensen; Christopher F.G. Jeffrey; Chris Caldow; Mark E. Monaco; Matthew S. Kendall; Richard S. Appeldoorn
Archive | 2008
Caroline S. Rogers; Jeff Miller; Erinn M. Muller; Peter J. Edmunds; Richard S. Nemeth; James P. Beets; Alan M. Friedlander; Tyler B. Smith; Rafe Boulon; Christopher F.G. Jeffrey; Charles W. Menza; Chris Caldow; Nasseer Idrisi; Barbara Kojis; Mark E. Monaco; Anthony Spitzack; Elizabeth H. Gladfelter; John C. Ogden; Zandy Hillis-Starr; Ian Lundgren; William Bane Schill; Ilsa B. Kuffner; Laurie L. Richardson; Barry E. Devine; Joshua D. Voss
Marine Pollution Bulletin | 2008
Laurie J. Bauer; Matthew S. Kendall; Christopher F.G. Jeffrey
Bulletin of Marine Science | 2009
Randall D. Clark; Christopher F.G. Jeffrey; Kimberly Woody; Zandy Hillis-Starr; Mark E. Monaco
Archive | 2007
Matthew S. Kendall; Laurie J. Bauer; Christopher F.G. Jeffrey
Archive | 2007
Anthony S. Pait; David R. Whitall; Christopher F.G. Jeffrey; Chris Caldow; Andrew L. Mason; John D. Christensen; Mark E. Monaco; Juan Ramirez