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Phycocyanin and Harmful Algal Blooms

Although cyanobacteria produce both chlorophyll a and phycocyanin   pigments, the latter is much more nearly unique to cyanobacteria   than is chlorophyll a, produced by practically all types of algae,   most of which are non-toxic. A multiple regression method and in   situ data collection for at least two satellite overpasses has been   employed to produce a phycocyanin algorithm that inputs LANDSAT TM   data and outputs an image with brightness proportional to the   content of phycocyanin pigment in the water in units of micrograms   per liter. The same methodology will be applied to MODIS data, which   has a daily repeat cycle of coverage, compared to the 16-day repeat   cycle of LANDSAT 7. After validation, the MODIS algorithm should   result in a MODIS phycocyanin image product that can be used for the   early detection of potentially toxic cyanobacteria blooms.    During 2  5, MODIS satellite imagery coincident with surface water   samples were collected during the August and September IFYLE cruises   on Lake Erie. The water samples are currently being processed for   phycocyanin content after which the algorithm development can   proceed using the MODIS imagery. In addition, during 2  5, a summer   intern has helped in the evaluation of two Internet map servers,   ArcIMS and Map Server, a widely used map server developed at the   University of Minnesota were installed and tested using a number of   criteria.    (algal bloom); (algal blooms); (Lake Erie); (cyanobacteria);   (toxic); (toxic algal blooms); (toxic algal bloom); (phycocyanin)

Status
In progress
Type
Project
Start Date
End Date
Scope of Study
Field Investigation
Laboratory Investigation
Scale of Phenomena
Landscape
Lake Basin Connecting Channels
Lake Erie
Region Being Monitored
Near and OpenShore Waters
Resource Being Monitored
Human Health
Societal/Surface Water
Beneficial Use Impairment Assessments
Eutrophication or Undesirable Algae
Annex Numbers
Research & Development
Surveillance and Monitoring
Annex 17
Cause-effect inter-relationships of productivity and ecotoxicity
General
Monitoring
Annex
  • Annex Numbers
    Annex Numbers
    Research & Development
    Surveillance and Monitoring
  • Annex 17
    Annex 17
    Cause-effect inter-relationships of productivity and ecotoxicity

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