Phycocyanin detection from LANDSAT TM data for mapping cyanobacterial blooms in Lake Erie

Phycocyanin detection from LANDSAT TM data for mapping cyanobacterial blooms in Lake Erie

Algorithms were developed from LANDSAT 7 ETM+ data for the July 1, 2000 overpass and LANDSAT 5 Thematic Mapper (TM) data for the September 27, 2000 overpass for Path 20 Row 31 (including Toledo, OH) to measure relative phycocyanin content (PC) and turbidity in the western basin of Lake Erie. Water s...

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Bibliographic Details
Published in:Remote sensing of environment Vol. 89; no. 3; pp. 381 - 392
Main Authors: Vincent, Robert K, Qin, Xiaoming, McKay, R.Michael L, Miner, Jeffrey, Czajkowski, Kevin, Savino, Jeffrey, Bridgeman, Thomas
Format: Journal Article
Language:English
Published: New York, NY Elsevier Inc 15-02-2004
Elsevier Science
Subjects:
Algal blooms
Applied geophysics
Cyanobacteria
Earth sciences
Earth, ocean, space
Exact sciences and technology
Freshwater
Hydrology
Hydrology. Hydrogeology
Internal geophysics
Lake Erie
LANDSAT TM
Microcystis
Phycocyanin
phycocyanins
Remote sensing
Toxic algae
Water quality
Lake Erie
Great Lakes
North America, Erie L
USA, Ohio, Cleveland
USA, Ohio
USA, Ohio, Toledo
LANDSAT TM
Lake Erie
Phycocyanin
Algal blooms
Cyanobacteria
Water quality
Toxic algae
Microcystis
Remote sensing
toxicity
algorithms
models
turbidity
shorelines
Thematic Mapper
pigments
bacteria
Space remote sensing
Plantae
Landsat
chlorophyll
algae
concentration
North America
prokaryotes
water quality
fluorescence
Cyanophyta
Thallophyta
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Summary:Algorithms were developed from LANDSAT 7 ETM+ data for the July 1, 2000 overpass and LANDSAT 5 Thematic Mapper (TM) data for the September 27, 2000 overpass for Path 20 Row 31 (including Toledo, OH) to measure relative phycocyanin content (PC) and turbidity in the western basin of Lake Erie. Water samples were collected from discrete hydrographic stations arranged in a 20×4 km grid adjacent to the Ohio shoreline during a 6-h period spanning each of the two LANDSAT overpasses. The samples were analyzed for chlorophyll (chl) a content and turbidity. In addition, the concentration of phycocyanin, a light-harvesting pigment associated with cyanobacteria, was estimated from the ratio of phycocyanin/chl a in vivo fluorescence (IVPF/IVCF). A dark-object-subtracted, spectral ratio model derived from the July 1, 2000 data was found to be the most robust, when applied to the September 27, 2000 data. The same July 1, 2000 model (or algorithm) for PC was then applied to LANDSAT 7 ETM+ frames for July 16 and August 1, 2002 of the Path 19 Row 31 frame (including Cleveland, OH) and to the August 8, 2002 frame of Path 20 Row 31. Moderate, very low, and high PC values were detected in the western basin of Lake Erie on July 16, August, 1, and August 8, 2002, respectively. On September 17, 2002, local media reported a large Microcystis bloom in the western basin. The high PC values on August 8, 2002 may have represented early stage detection of the large Microcystis bloom that was reported 5 weeks later. The PC algorithm derived in this study will improve our understanding of the temporal and spatial dynamics of cyanobacterial bloom formation in Lake Erie and other systems. It may also serve to alert municipalities to the presence of potentially toxic bloom events.
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ISSN:0034-4257
1879-0704
DOI:10.1016/j.rse.2003.10.014