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Diverse taxa of cyanobacteria produce beta-N-methylamino-L-alanine, a neurotoxic amino acid.
Cyanobacteria can generate molecules hazardous to human health, but production of the known cyanotoxins is taxonomically sporadic. For example, members of a few genera produce hepatotoxicExpand
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Revisiting Carbon Flux Through the Ocean's Twilight Zone
The oceanic biological pump drives sequestration of carbon dioxide in the deep sea via sinking particles. Rapid biological consumption and remineralization of carbon in the “twilight zone” (depthsExpand
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Ozone depletion: ultraviolet radiation and phytoplankton biology in antarctic waters.
The springtime stratospheric ozone (O3) layer over the Antarctic is thinning by as much as 50 percent, resulting in increased midultraviolet (UVB) radiation reaching the surface of the SouthernExpand
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Consistent fractionation of 13C in nature and in the laboratory: growth-rate effects in some haptophyte algae.
The carbon isotopic fractionation accompanying formation of biomass by alkenone-producing algae in natural marine environments varies systematically with the concentration of dissolved phosphate.Expand
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Temporal variability of phytoplankton community structure based on pigment analysis
Algal chlorophyll and carotenoid distributions were measured periodically in the euphotic zone of Sta. ALOHA (22”45’N, 158”OO’W) between February 1989 and October 1991 to document the variability inExpand
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Long-term changes in plankton community structure and productivity in the North Pacific Subtropical Gyre: The domain shift hypothesis
Oceanic productivity, fishery yields and the net marine sequestration of atmospheric greenhouse gases are all controlled by the structure and function of planktonic communities. DetailedExpand
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Spatial and temporal variability of phytoplankton pigment distributions in the central equatorial Pacific Ocean
Abstract During the 1992 U.S. JGOFS Equatorial Pacific (EqPac) study, we participated in survey (12°N-12°S, along 135°–140°W) and time-series (0°, 140°W) cruises to identify the factors that controlExpand
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Southern Ocean Iron Enrichment Experiment: Carbon Cycling in High- and Low-Si Waters
The availability of iron is known to exert a controlling influence on biological productivity in surface waters over large areas of the ocean and may have been an important factor in the variation ofExpand
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Biological response to iron fertilization in the eastern equatorial Pacific (IronEx II). III. Dynamics of phytoplankton growth and microzooplankton grazing
Phytoplankton growth and microzooplankton grazing were investigated during the IronEx II mesoscale enrichment experiment using the seawater dilution technique combined with group-specific pigmentExpand
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