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Int. J. Environ. Res. Public Health 2015, 12(9), 11560-11578; doi:10.3390/ijerph120911560

A Multiscale Mapping Assessment of Lake Champlain Cyanobacterial Harmful Algal Blooms

1
Applied Geosolutions, Newmarket, New Hampshire, NH 03857, USA
2
Department of Neurology, Dartmouth College, Hanover, New Hampshire, NH 03755, USA
*
Author to whom correspondence should be addressed.
Academic Editor: Yu-Pin Lin
Received: 4 June 2015 / Revised: 3 September 2015 / Accepted: 6 September 2015 / Published: 15 September 2015
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Abstract

Lake Champlain has bays undergoing chronic cyanobacterial harmful algal blooms that pose a public health threat. Monitoring and assessment tools need to be developed to support risk decision making and to gain a thorough understanding of bloom scales and intensities. In this research application, Landsat 8 Operational Land Imager (OLI), Rapid Eye, and Proba Compact High Resolution Imaging Spectrometer (CHRIS) images were obtained while a corresponding field campaign collected in situ measurements of water quality. Models including empirical band ratio regressions were applied to map chlorophylla and phycocyanin concentrations; all sensors performed well with R2 and root-mean-square error (RMSE) ranging from 0.76 to 0.88 and 0.42 to 1.51, respectively. The outcomes showed spatial patterns across the lake with problematic bays having phycocyanin concentrations >25 μg/L. An alert status metric tuned to the current monitoring protocol was generated using modeled water quality to illustrate how the remote sensing tools can inform a public health monitoring system. Among the sensors utilized in this study, Landsat 8 OLI holds the most promise for providing exposure information across a wide area given the resolutions, systematic observation strategy and free cost. View Full-Text
Keywords: cyanobacterial harmful algal blooms; Lake Champlain; Landsat 8 OLI; RapidEye; Proba CHRIS; water quality; phycocyanin; chlorophyll-a cyanobacterial harmful algal blooms; Lake Champlain; Landsat 8 OLI; RapidEye; Proba CHRIS; water quality; phycocyanin; chlorophyll-a
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Torbick, N.; Corbiere, M. A Multiscale Mapping Assessment of Lake Champlain Cyanobacterial Harmful Algal Blooms. Int. J. Environ. Res. Public Health 2015, 12, 11560-11578.

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Int. J. Environ. Res. Public Health EISSN 1660-4601 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
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