James Cloern (Former Employee)
Science and Products
Filter Total Items: 104
The annual cycles of phytoplankton biomass The annual cycles of phytoplankton biomass
Terrestrial plants are powerful climate sentinels because their annual cycles of growth, reproduction and senescence are finely tuned to the annual climate cycle having a period of one year. Consistency in the seasonal phasing of terrestrial plant activity provides a relatively low-noise background from which phenological shifts can be detected and attributed to climate change. Here, we...
Authors
Monika Winder, James E. Cloern
Primary production and carrying capacity of former salt ponds after reconnection to San Francisco Bay Primary production and carrying capacity of former salt ponds after reconnection to San Francisco Bay
Over 6,110 ha of the commercial production salt ponds surrounding South San Francisco Bay, CA, have been decommissioned and reconnected to the bay, most as part of the largest wetlands restoration program in the western United States. These open water ponds are critical habitat for millions of birds annually and restoration program managers must determine the appropriate balance between...
Authors
Julien Thebault, Tara Schraga, James E. Cloern, Eric G. Dunlavey
On phytoplankton trends On phytoplankton trends
Phytoplankton—unicellular algae in the surface layer of lakes and oceans—fuel the lacustrine and marine food chains and play a key role in regulating atmospheric carbon dioxide concentrations. How will rising carbon dioxide concentrations in the air and surface ocean in turn affect phytoplankton? Answering this question is crucial for projecting future climate change. However, because
Authors
Victor Smetacek, James E. Cloern
Complex seasonal patterns of primary producers at the land-sea interface Complex seasonal patterns of primary producers at the land-sea interface
Seasonal fluctuations of plant biomass and photosynthesis are key features of the Earth system because they drive variability of atmospheric CO2, water and nutrient cycling, and food supply to consumers. There is no inventory of phytoplankton seasonal cycles in nearshore coastal ecosystems where forcings from ocean, land and atmosphere intersect. We compiled time series of phytoplankton...
Authors
J. E. Cloern, A.D. Jassby
Habitat connectivity and ecosystem productivity: implications from a simple model. Habitat connectivity and ecosystem productivity: implications from a simple model.
The import of resources (food, nutrients) sustains biological production and food webs in resource-limited habitats. Resource export from donor habitats subsidizes production in recipient habitats, but the ecosystem-scale consequences of resource translocation are generally unknown. Here, I use a nutrient-phytoplankton-zooplankton model to show how dispersive connectivity between a...
Authors
James E. Cloern
A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay
Ecological observations sustained over decades often reveal abrupt changes in biological communities that signal altered ecosystem states. We report a large shift in the biological communities of San Francisco Bay, first detected as increasing phytoplankton biomass and occurrences of new seasonal blooms that began in 1999. This phytoplankton increase is paradoxical because it occurred in...
Authors
James E. Cloern, Alan D. Jassby, Janet K. Thompson, Kathryn Hieb
Science and Products
Filter Total Items: 104
The annual cycles of phytoplankton biomass The annual cycles of phytoplankton biomass
Terrestrial plants are powerful climate sentinels because their annual cycles of growth, reproduction and senescence are finely tuned to the annual climate cycle having a period of one year. Consistency in the seasonal phasing of terrestrial plant activity provides a relatively low-noise background from which phenological shifts can be detected and attributed to climate change. Here, we...
Authors
Monika Winder, James E. Cloern
Primary production and carrying capacity of former salt ponds after reconnection to San Francisco Bay Primary production and carrying capacity of former salt ponds after reconnection to San Francisco Bay
Over 6,110 ha of the commercial production salt ponds surrounding South San Francisco Bay, CA, have been decommissioned and reconnected to the bay, most as part of the largest wetlands restoration program in the western United States. These open water ponds are critical habitat for millions of birds annually and restoration program managers must determine the appropriate balance between...
Authors
Julien Thebault, Tara Schraga, James E. Cloern, Eric G. Dunlavey
On phytoplankton trends On phytoplankton trends
Phytoplankton—unicellular algae in the surface layer of lakes and oceans—fuel the lacustrine and marine food chains and play a key role in regulating atmospheric carbon dioxide concentrations. How will rising carbon dioxide concentrations in the air and surface ocean in turn affect phytoplankton? Answering this question is crucial for projecting future climate change. However, because
Authors
Victor Smetacek, James E. Cloern
Complex seasonal patterns of primary producers at the land-sea interface Complex seasonal patterns of primary producers at the land-sea interface
Seasonal fluctuations of plant biomass and photosynthesis are key features of the Earth system because they drive variability of atmospheric CO2, water and nutrient cycling, and food supply to consumers. There is no inventory of phytoplankton seasonal cycles in nearshore coastal ecosystems where forcings from ocean, land and atmosphere intersect. We compiled time series of phytoplankton...
Authors
J. E. Cloern, A.D. Jassby
Habitat connectivity and ecosystem productivity: implications from a simple model. Habitat connectivity and ecosystem productivity: implications from a simple model.
The import of resources (food, nutrients) sustains biological production and food webs in resource-limited habitats. Resource export from donor habitats subsidizes production in recipient habitats, but the ecosystem-scale consequences of resource translocation are generally unknown. Here, I use a nutrient-phytoplankton-zooplankton model to show how dispersive connectivity between a...
Authors
James E. Cloern
A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay A cold phase of the East Pacific triggers new phytoplankton blooms in San Francisco Bay
Ecological observations sustained over decades often reveal abrupt changes in biological communities that signal altered ecosystem states. We report a large shift in the biological communities of San Francisco Bay, first detected as increasing phytoplankton biomass and occurrences of new seasonal blooms that began in 1999. This phytoplankton increase is paradoxical because it occurred in...
Authors
James E. Cloern, Alan D. Jassby, Janet K. Thompson, Kathryn Hieb