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Broward County coastal ocean water quality study, 2010-2012
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2015
[PDF-74.69 MB]
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Description:Researchers with the Ocean Chemistry and Ecosystems Division of NOAA's Atlantic Oceanographic and Meteorological Laboratory conducted 12 monthly cruises in two separate track lines off of Broward County, Florida, from November 2010 through January 2012. The cruise tracks were designed to provide information on three categories of the coastal ocean: (1) the vicinity of the Broward and Hollywood treated-wastewater outfalls; (2) the vicinity of the Hillsboro and Port Everglades inlets; and (3) the interstitial areas in between. Sampling took place from aboard the NOAA R/V Hildebrand using a conductivity-temperaturedepth (CTD)/rosette for water samples and water column profiles and appropriately located acoustic Doppler current profiler (ADCP) instruments for ocean current information. Measured discrete parameters included location, depth, salinity, temperature, pH, oxygen saturation (dissolved oxygen, DO), oxidation-reduction (redox) potential (ORP), chlorophyll-a, phaeopigments, total suspended solids (TSS), nitrate (NO3), nitrite (NO2), ammonium (NH4), silicate (Si), orthophosphate (PO4), total dissolved nitrogen (TDN), total dissolved phosphorus (TDP), particulate carbon (PC), particulate phosphorus (PP), particulate nitrogen (PN), and dissolved organic carbon (DOC). CTD profile data included depth, turbidity, ORP, DO, pH, chlorophyll-a, salinity, temperature, and density. A variety of microbiological entities were measured, including fecal indicator bacteria (FIB), selected waterborne pathogens, and molecular microbial source tracking (MST) markers. Community bacterial metagenomic profiles were also generated for selected sample sites. Quality controls of nutrient sample analyses were obtained following National Environmental Laboratory Accreditation Conference (NELAC)-certified procedures. The data obtained present a view of the coastal ocean as having a low “background” concentration of most analytes, interrupted by elevated concentrations near the outfalls and inlets whose excess concentrations decreased rapidly away from the point sources. The waters were found to be oligotrophic, with no evidence of bloom events. A major upwelling event was observed on August 11, 2011, where a ~10°C temperature drop was observed near the southernmost portion of the sampled area. [doi:10.7289/V5TD9VCC (http://doi.org/10.7289/V5TD9VCC)]
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Content Notes:Thomas P. Carsey, S. Jack Stamates, Charles M. Featherstone, Natchanon Amornthammarong, Joseph R. Bishop, Cheryl J. Brown, Alexandra Campbell, Hector L. Casanova, Maribeth L. Gidley, Marina Kosenko, Rachel M. Kotkowski, Jose V. Lopez, Christopher D. Sinigalliano, Lindsey A. Visser, Jia-Zhong Zhang.
"August 2015."
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Rights Information:CC0 Public Domain
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