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USGS - science for a changing world

Global annual coastal chlorophyll-A concentrations (2005)


Original Data Basin Creation Date
2011-01-07 03:44:29
Original Data Basin Modified Date
2011-01-07 03:45:54


The flow of nutrients into coastal waters from land-based sources has seen a worldwide increase over the last decades. The resulting change in water quality has many potential impacts on coastal and marine ecosystems. Phosphorus and nitrogen contribute to enhanced algae growth, and subsequent decomposition reduces oxygen availability to benthic sea creatures like fish, shell fish, and crustaceans. Changes to nutrient loadings can also change the phytoplankton species composition and diversity. In extreme cases, eutrophication can lead to hypoxia—oxygen-depleted “dead zones”—and harmful algal blooms. Measuring chlorophyll concentrations as an indicator of algae biomass may provide one tool to assess coastal water quality and its change [...]


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This work, including access to the data and technical assistance, is provided by CIESIN, with funding from the National Aeronautics and Space Administration under Contract NAS5-03117 for the continued operation of the Socioeconomic Data and Applications Center (SEDAC).<br /> <br />
Harvested on Fri May 23 09:41:06 MDT 2014 from Data Basin Service

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Type Scheme Key
UniqueKey Data Basin 43ca8dcb95a74c708f050ba982e8e386

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