James Cloern (Former Employee)
Science and Products
Filter Total Items: 104
Blurred lines: Multiple freshwater and marine algal toxins at the land-sea interface of San Francisco Bay, California Blurred lines: Multiple freshwater and marine algal toxins at the land-sea interface of San Francisco Bay, California
San Francisco Bay (SFB) is a eutrophic estuary that harbors both freshwater and marine toxigenic organisms that are responsible for harmful algal blooms. While there are few commercial fishery harvests within SFB, recreational and subsistence harvesting for shellfish is common. Coastal shellfish are monitored for domoic acid and paralytic shellfish toxins (PSTs), but within SFB there is...
Authors
Melissa B. Peacock, Corinne M. Gibble, David B. Senn, James E. Cloern, Raphael M. Kudela
Why large cells dominate estuarine phytoplankton Why large cells dominate estuarine phytoplankton
Surveys across the world oceans have shown that phytoplankton biomass and production are dominated by small cells (picoplankton) where nutrient concentrations are low, but large cells (microplankton) dominate when nutrient-rich deep water is mixed to the surface. I analyzed phytoplankton size structure in samples collected over 25 yr in San Francisco Bay, a nutrient-rich estuary. Biomass...
Authors
James E. Cloern
The land-sea interface: A source of high-quality phytoplankton to support secondary production The land-sea interface: A source of high-quality phytoplankton to support secondary production
Coastal-estuarine systems are among the most productive marine ecosystems and their special role in producing harvestable fish and shellfish has been attributed to high primary production fueled by nutrient runoff from land and efficient trophic transfer. Here we ask if phytoplankton species composition and their food quality based on the percentage of long-chain essential fatty acids...
Authors
Monika Winder, Jacob Carstensen, Aaron W.E. Galloway, Hans H. Jakobsen, James E. Cloern
Novel analyses of long-term data provide a scientific basis for chlorophyll-a thresholds in San Francisco Bay Novel analyses of long-term data provide a scientific basis for chlorophyll-a thresholds in San Francisco Bay
San Francisco Bay (SFB), USA, is highly enriched in nitrogen and phosphorus, but has been resistant to the classic symptoms of eutrophication associated with over-production of phytoplankton. Observations in recent years suggest that this resistance may be weakening, shown by: significant increases of chlorophyll-a (chl-a) and decreases of dissolved oxygen (DO), common occurrences of...
Authors
Martha Sutula, Raphael Kudela, James Hagy, Lawrence W. Harding, David Senn, James E. Cloern, Suzanne B. Bricker, Gry Mine Berg, Marcus W. Beck
Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015 Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015
The U.S. Geological Survey (USGS) maintains a place-based research program in San Francisco Bay (USA) that began in 1969 and continues, providing one of the longest records of water-quality measurements in a North American estuary. Constituents include salinity, temperature, light extinction coefficient, and concentrations of chlorophyll-a, dissolved oxygen, suspended particulate matter...
Authors
Tara Schraga, James E. Cloern
Ecosystem variability along the estuarine salinity gradient: Examples from long-term study of San Francisco Bay Ecosystem variability along the estuarine salinity gradient: Examples from long-term study of San Francisco Bay
The salinity gradient of estuaries plays a unique and fundamental role in structuring spatial patterns of physical properties, biota, and biogeochemical processes. We use variability along the salinity gradient of San Francisco Bay to illustrate some lessons about the diversity of spatial structures in estuaries and their variability over time. Spatial patterns of dissolved constituents...
Authors
James E. Cloern, Alan D. Jassby, Tara Schraga, Erica S. Kress, Charles A. Martin
Science and Products
Filter Total Items: 104
Blurred lines: Multiple freshwater and marine algal toxins at the land-sea interface of San Francisco Bay, California Blurred lines: Multiple freshwater and marine algal toxins at the land-sea interface of San Francisco Bay, California
San Francisco Bay (SFB) is a eutrophic estuary that harbors both freshwater and marine toxigenic organisms that are responsible for harmful algal blooms. While there are few commercial fishery harvests within SFB, recreational and subsistence harvesting for shellfish is common. Coastal shellfish are monitored for domoic acid and paralytic shellfish toxins (PSTs), but within SFB there is...
Authors
Melissa B. Peacock, Corinne M. Gibble, David B. Senn, James E. Cloern, Raphael M. Kudela
Why large cells dominate estuarine phytoplankton Why large cells dominate estuarine phytoplankton
Surveys across the world oceans have shown that phytoplankton biomass and production are dominated by small cells (picoplankton) where nutrient concentrations are low, but large cells (microplankton) dominate when nutrient-rich deep water is mixed to the surface. I analyzed phytoplankton size structure in samples collected over 25 yr in San Francisco Bay, a nutrient-rich estuary. Biomass...
Authors
James E. Cloern
The land-sea interface: A source of high-quality phytoplankton to support secondary production The land-sea interface: A source of high-quality phytoplankton to support secondary production
Coastal-estuarine systems are among the most productive marine ecosystems and their special role in producing harvestable fish and shellfish has been attributed to high primary production fueled by nutrient runoff from land and efficient trophic transfer. Here we ask if phytoplankton species composition and their food quality based on the percentage of long-chain essential fatty acids...
Authors
Monika Winder, Jacob Carstensen, Aaron W.E. Galloway, Hans H. Jakobsen, James E. Cloern
Novel analyses of long-term data provide a scientific basis for chlorophyll-a thresholds in San Francisco Bay Novel analyses of long-term data provide a scientific basis for chlorophyll-a thresholds in San Francisco Bay
San Francisco Bay (SFB), USA, is highly enriched in nitrogen and phosphorus, but has been resistant to the classic symptoms of eutrophication associated with over-production of phytoplankton. Observations in recent years suggest that this resistance may be weakening, shown by: significant increases of chlorophyll-a (chl-a) and decreases of dissolved oxygen (DO), common occurrences of...
Authors
Martha Sutula, Raphael Kudela, James Hagy, Lawrence W. Harding, David Senn, James E. Cloern, Suzanne B. Bricker, Gry Mine Berg, Marcus W. Beck
Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015 Water quality measurements in San Francisco Bay by the U.S. Geological Survey, 1969–2015
The U.S. Geological Survey (USGS) maintains a place-based research program in San Francisco Bay (USA) that began in 1969 and continues, providing one of the longest records of water-quality measurements in a North American estuary. Constituents include salinity, temperature, light extinction coefficient, and concentrations of chlorophyll-a, dissolved oxygen, suspended particulate matter...
Authors
Tara Schraga, James E. Cloern
Ecosystem variability along the estuarine salinity gradient: Examples from long-term study of San Francisco Bay Ecosystem variability along the estuarine salinity gradient: Examples from long-term study of San Francisco Bay
The salinity gradient of estuaries plays a unique and fundamental role in structuring spatial patterns of physical properties, biota, and biogeochemical processes. We use variability along the salinity gradient of San Francisco Bay to illustrate some lessons about the diversity of spatial structures in estuaries and their variability over time. Spatial patterns of dissolved constituents...
Authors
James E. Cloern, Alan D. Jassby, Tara Schraga, Erica S. Kress, Charles A. Martin