Browsing by Author "Velinsky, David"
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Item Barnegat Bay nutrient inference model : final report [2013], New Jersey Department of Environmental Protection - Sea Grant contract SR12-003(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Technology, 2013-08-08) Academy of Natural Sciences of Drexel University; Potapova, Marina; Desianti, Nina; Velinsky, David; Mead, JerryItem Barnegat Bay Nutrient Inference Model : Final Report, Draft(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Environmental Health, 2015-04-06) Academy of Natural Sciences of Drexel University; Potapova, Marina; Desianti, Nina; Velinsky, DavidItem Ecosystem Services of Tidal Wetlands in Barnegat Bay : Nitrogen removal(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Environmental Health, 2013-09-18) Velinsky, David; Quirk, Tracy; Piehler, Michael; Smythe, AshleyItem Final report, phosphorus dynamics in the Barnegat Bay, New Jersey (year 3)(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Environmental Health, 2016-02) Velinsky, David; Weston, Nathaniel; Paudel, BhanuItem Final report, tidal wetlands studies of ecological function : denitrification in Barnegat Bay, NJ (year 2)(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Environmental Health, 2015-11) Velinsky, David; Quirk, Tracy; Cornwell, Jeffery; Owens, MichaelItem Final Report: Routine Monitoring Program for Toxics in Fish(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Technology, 2005-05-16) Horwitz, Richard; Ashley, Jeffrey; Overbeck, Paul; Velinsky, DavidItem Nutrient and Carbon Fluxes to Barnegat Bay from Marginal Saline Wetlands(Trenton, N.J. : New Jersey Department of Environmental Protection, 2021-06) Velinsky, David; Wilson, TimothySalt marshes play a large role in removing pollutants and nutrients from aquatic ecosystems, such as Barnegat Bay, and serve as a vital link between terrestrial watersheds and coastal waters. Biogeochemical processes transform nutrients during transport through the marsh complex, altering the form, concentration and fate of carbon, nitrogen, and phosphorus entering the bay. In some cases, water quality models do not account for marsh habitats in the assessment of the watershed flux of nutrients to coastal waters and with increasing coastal development pressures, marshes areas are shrinking, and their benefits will be greatly reduced.Item Nutrient and Carbon Fluxes to Barnegat Bay from Marginal Saline Wetlands: Research Project Summary(Trenton, N.J. : Department of Environmental Protection, Division of Science and Research, 2021-12) Velinsky, David; Wilson, Timothy; Millemann, Daniel R.Salt marshes, such as those found along Barnegat Bay, play an important role in removing pollutants and cycling nutrients from aquatic ecosystems, as well as serve as a vital link between terrestrial watersheds and coastal waters. Biogeochemical processes transform nutrients during transport through the marsh complex altering the form, concentration, and fate of carbon, nitrogen, and phosphorus entering the bay. In some cases, water quality models do not adequately account for marsh habitats in the assessment of the watershed flux of nutrients to coastal waters. Additional data on nutrient concentrations and their transport in marsh habitats will improve estuarine water quality models in New Jersey and similar habitats elsewhere on the eastern seaboard. This research project collected nutrient data along the Westecunk Creek through the Barnegat Bay-Little Egg Harbor Estuary to determine the approximate flux of nitrogen, phosphorous, and other measured constituents. Dissolved nitrate exhibited substantial non-conservative behavior as the marsh complex served as a source of nitrate to the creek in the spring and as a sink during the summer months.Item Nutrient and ecological histories in Barnegat Bay, New Jersey : final report(N.J. Dept. of Environmental Protection, Office of Science, 2011-04-22) Velinsky, David; Belton, Thomas J.; Sommerfield, Christopher; Enache, Mihalea; Don, Charles; Patrick Center for Environmental Research; New Jersey Dept. Of Environmental Protection, Office of Science; University of Delaware, College of Earth, Ocean and Environment; University of Delaware, School of Marine Science and PolicyItem Nutrient and Ecological Histories in Barnegat Bay, New Jersey: Research Project Summary(Trenton, N.J. : New Jersey Department of Environmental Protection, Office of Science, 2011-06) Velinsky, David; Enache, Mihalea; Charles, Donald; Sommerfield, Christopher; Belton, ThomasThe primary objective of this project was to collect sediment cores from tidal regions of Barnegat Bay and determine the chronology of nutrient changes (i.e., nitrogen and phosphorus) and associated ecosystem level responses. Sediment nitrogen concentrations increased towards the surface in three of the 4 cores collected indicating an increase in nutrient loading from portions of the watershed. Sediment nitrogen accumulation rates increased twofold at the up-bay site starting in the mid-1950s. Algal diatoms indicate major shifts toward more eutrophic conditions starting in the 1940-1950s consistent with an increase in sediment nutrients and appear to indicate impacts from increasing population and land use in the northern part of Barnegat Bay, an area with urban and suburban land use. The southern site is situated in a rural or semi-rural area and was the least impacted. Wetlands in Barnegat Bay can sequester approximately 79 % of the nitrogen and 54 % of the phosphorus estimated to be entering the Bay from upland sources. This illustrates the important ecosystem services that marshes can perform and how important it is to maintain and enhance marshes within Barnegat Bay. Sedimentation rates on salt marshes are at, or just below, the rate of relative sea level rise in Barnegat Bay. These relatively low rates of accretion render the marsh vulnerable to inundation should the rate of sea level rise accelerate in the future. Overall, the irreversible shifts recorded by diatom species suggest that, despite the fact that the Barnegat Bay wetlands are protected by both federal and state laws, these sites remain impacted by anthropogenic disturbances and did not return to their natural, reference conditions. On the contrary, the most recent changes suggest an increase in habitat deterioration and pollution. Thus, the changes recorded in diatom species convey a strong message to identify and limit all sources of nutrients that contribute to the degradation of the estuary and its watershed.Item Phase II Assessment of Total Mercury Concentrations in Fishes from Rivers, Lakes and Reservoirs of New Jersey(Trenton, N.J. : New Jersey Department of Environmental Protection, Division of Science, Research and Technology, 1999-06-17) Horwitz, Richard J.; Velinsky, David; Overbeck, Paul; Kiry, PaulItem Pilot Study: Chemical Contaminant Concentrations in Juvenile Atlantic Menhaden (Brevoortia tyrannus) from New Jersey Coastal Estuarine Waters (2009)(Trenton, N.J. : Department of Environmental Protection, Office of Science, 2013) Horwitz, Richard; Zaoudeh, Linda; Schafer, Michael; Ashley, Jeffrey; Velinsky, David; Overbeck, Paul; Davis, Robin; Ruppel, Bruce; Lippincott, R. LeeItem Routine Monitoring of Toxics in New Jersey Fish : Fourth Year (2007) of Routine Monitoring Program Atlantic Coastal Region(Trenton, N.J. : Department of Environmental Protection, Office of Science, 2009-11-03) Horwitz, Richard J.; Overbeck, Paul F.; Ashley, Jeff; Velinsky, David; Zaoudeh, Linda