scholarly journals Subsurface seeding of surface harmful algal blooms observed through the integration of autonomous gliders, moored environmental sample processors, and satellite remote sensing in southern California

2015 ◽  
Vol 60 (3) ◽  
pp. 754-764 ◽  
Author(s):  
Bridget N. Seegers ◽  
James M. Birch ◽  
Roman Marin ◽  
Chris A. Scholin ◽  
David A. Caron ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Environmental Sample ◽  
Satellite Remote Sensing ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Southern California

scholarly journals Satellite remote sensing of harmful algal blooms: A new multi-algorithm method for detecting the Florida Red Tide (Karenia brevis)

Harmful Algae ◽  
2010 ◽  
Vol 9 (5) ◽  
pp. 440-448 ◽  
Author(s):  
Gustavo A. Carvalho ◽  
Peter J. Minnett ◽  
Lora E. Fleming ◽  
Viva F. Banzon ◽  
Warner Baringer
Keyword(s):  
Remote Sensing ◽  
Satellite Remote Sensing ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Red Tide ◽  
Karenia Brevis

scholarly journals Current and Future Remote Sensing of Harmful Algal Blooms in the Chesapeake Bay to Support the Shellfish Industry

2020 ◽  
Vol 7 ◽  
Author(s):  
Jennifer L. Wolny ◽  
Michelle C. Tomlinson ◽  
Stephanie Schollaert Uz ◽  
Todd A. Egerton ◽  
John R. McKay ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Chesapeake Bay ◽  
Harmful Algal Blooms ◽  
Algal Blooms

scholarly journals Quantifying Scales of Spatial Variability of Cyanobacteria in a Large, Eutrophic Lake Using Multiplatform Remote Sensing Tools

2021 ◽  
Vol 9 ◽  
Author(s):  
Samantha L. Sharp ◽  
Alexander L. Forrest ◽  
Keith Bouma-Gregson ◽  
Yufang Jin ◽  
Alicia Cortés ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Spatial Variability ◽  
Harmful Algal Blooms ◽  
Algal Blooms ◽  
Temporal Dynamics ◽  
Eutrophic Lake ◽  
Hyperspectral Data ◽  
Cyanobacterial Blooms ◽  
Satellite Monitoring ◽  
Sampling Effort

Harmful algal blooms of cyanobacteria are increasing in magnitude and frequency globally, degrading inland and coastal aquatic ecosystems and adversely affecting public health. Efforts to understand the structure and natural variability of these blooms range from point sampling methods to a wide array of remote sensing tools. This study aims to provide a comprehensive view of cyanobacterial blooms in Clear Lake, California — a shallow, polymictic, naturally eutrophic lake with a long record of episodic cyanobacteria blooms. To understand the spatial heterogeneity and temporal dynamics of cyanobacterial blooms, we evaluated a satellite remote sensing tool for estimating coarse cyanobacteria distribution with coincident, in situ measurements at varying scales and resolutions. The Cyanobacteria Index (CI) remote sensing algorithm was used to estimate cyanobacterial abundance in the top portion of the water column from data acquired from the Ocean and Land Color Instrument (OLCI) sensor on the Sentinel-3a satellite. We collected hyperspectral data from a handheld spectroradiometer; discrete 1 m integrated surface samples for chlorophyll-a and phycocyanin; multispectral imagery from small Unmanned Aerial System (sUAS) flights (∼12 cm resolution); Autonomous Underwater Vehicle (AUV) measurements of chlorophyll-a, turbidity, and colored dissolved organic matter (∼10 cm horizontal spacing, 1 m below the water surface); and meteorological forcing and lake temperature data to provide context to our cyanobacteria measurements. A semivariogram analysis of the high resolution AUV and sUAS data found the Critical Scale of Variability for cyanobacterial blooms to range from 70 to 175 m, which is finer than what is resolvable by the satellite data. We thus observed high spatial variability within each 300 m satellite pixel. Finally, we used the field spectroscopy data to evaluate the accuracy of both the original and revised CI algorithm. We found the revised CI algorithm was not effective in estimating cyanobacterial abundance for our study site. Satellite-based remote sensing tools are vital to researchers and water managers as they provide consistent, high-coverage data at a low cost and sampling effort. The findings of this research support continued development and refinement of remote sensing tools, which are essential for satellite monitoring of harmful algal blooms in lakes and reservoirs.

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