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Decadal mercury trends in San Francisco Estuary sediments
Environmental Research, 2007Monitoring sediment quality and total mercury concentrations over the period 1993-2001 at 26 stations in San Francisco Estuary has shown the seasonal cycling of mercury sediment concentrations, as well as a significant (P < 0.05) decrease in those concentrations at eight stations across the estuary.
Christopher Conaway +2 more
exaly +3 more sources
Mercury speciation in the San Francisco Bay estuary
Marine Chemistry, 2003In order to understand the biogeochemistry of mercury in the San Francisco Bay estuary, California, we undertook a 2-year study of sediments and surface waters to investigate sources of mercury to the estuary and the processes that control its distribution. Over several seasons, unfiltered and filtered (
Christopher Conaway +2 more
exaly +2 more sources
Mercury in the San Francisco Estuary
2008This review presents some of the published and other important literature on mercury contamination in San Francisco Estuary. Studies on human consumption of contaminated sportfish and on detecting ecological impacts of this contamination in wetland areas validate concerns regarding mercury's toxicity in this system.
Christopher H, Conaway +4 more
openaire +2 more sources
Patterns and trends in sediment toxicity in the San Francisco Estuary
Environmental Research, 2007Widespread sediment toxicity has been documented throughout the San Francisco Estuary since the mid-1980s. Studies conducted in the early 1990s as part of the Bay Protection and Toxic Cleanup Program (BPTCP), and more recently as part of the Regional Monitoring Program (RMP) have continued to find sediment toxicity in the Estuary.
Brian, Anderson +6 more
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Benthic macrofaunal assemblages of the San Francisco Estuary and Delta, USA
Environmental Monitoring and Assessment, 2012The spatial and temporal distribution of macrobenthic assemblages in the San Francisco Estuary and Sacramento-San Joaquin River Delta were identified using hierarchical cluster analysis of 501 samples collected between 1994 and 2008. Five benthic assemblages were identified that were distributed primarily along the salinity gradient: (1) a polyhaline ...
Stephen B. Weisberg +2 more
exaly +3 more sources
Surveillance for previously unmonitored organic contaminants in the San Francisco Estuary
Marine Pollution Bulletin, 2003The San Francisco Estuary Regional Monitoring Program initiated surveillance monitoring to identify previously unmonitored synthetic organic contaminants in the San Francisco Estuary. Organic extracts of water samples were analyzed using gas chromatography-mass spectrometry in full scan mode. The major contaminant classes identified in the samples were
Daniel R, Oros +5 more
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Denitrifier abundance and activity across the San Francisco Bay estuary
Environmental Microbiology Reports, 2010Summary Over 50% of external dissolved inorganic nitrogen inputs to estuaries are removed by denitrification – the microbial conversion of nitrate to nitrogen gas under anaerobic conditions. In this study, denitrifier abundance, potential rates and community structure were examined in sediments from the San ...
Annika C, Mosier, Christopher A, Francis
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Polycyclic aromatic hydrocarbons in San Francisco Estuary sediments
Marine Chemistry, 2004Abstract The objectives of this study were to examine surface sediments in the San Francisco Estuary for PAH composition over a range of spatial and temporal scales to determine distributions, trends, and possible sources. Surface sediments (top 5 cm) were collected at 26 sites from 1993 to 2001.
Daniel R. Oros, John R.M. Ross
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Environmental activism in the San Francisco Bay Estuary
Marine Pollution Bulletin, 1991Abstract This paper presents a brief description of the San Francisco Bay Estuary and its modifications. Problems associated with habitat loss and degradation, pollutants, freshwater diversion, and dredging are described. The activities of environmental groups addressing these problems, including several examples, are noted.
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Temporal Dynamics of an Estuary: San Francisco Bay
19851. Environmental setting of San Francisco Bay.- 2. Time scales of circulation and mixing processes of San Francisco Bay waters.- 3. Interannual variability in dissolved inorganic nutrients in Northern San Francisco Bay Estuary.- 4. Gas exchange in San Francisco Bay.- 5. Benthic fluxes in San Francisco Bay.- 6.
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