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Gallegos, Charles

Emeritus phytoplankton ecologist

Photosynthesis, primary production, and population dynamics of estuarine phytoplankton; optical properties of turbid waters; effects of nutrient enrichment on structure of microbial food webs; factors governing timing and magnitude of phytoplankton blooms.

Research Areas

Background And Education

Education And Training

B.A., Duke University
Ph.D., University of Virginia

Research And Grants

Investigator On

missing activity
Coastal Massachusetts Optical Water Quality Survey awarded by Photo Science Geospatial Solutions
Light Attenuation Modeling for Multiple Shallow-water Systems Analysis for Chesapeake Bay Water Clarity awarded by Old Dominion University

Publications

Selected Publications

Article
- Seasonal to Inter-Annual Variability of Primary Production in Chesapeake Bay: Prospects to Reverse Eutrophication and Change Trophic Classification. Scientific Reports. 10. 2020
- Long-term trends, current status, and transitions of water quality in Chesapeake Bay. Scientific Reports. 9:6709-6709. 2019
- Variable climatic conditions dominate recent phytoplankton dynamics in Chesapeake Bay. Scientific Reports. 6:23773. 2016
- Climate effects on phytoplankton floral composition in Chesapeake Bay. Estuarine Coastal and Shelf Science. 162:53-68. 2015
- Long-Term Trends of Nutrients and Phytoplankton in Chesapeake Bay. Estuaries and Coasts. 39:664-681. 2015
- Dependence of eelgrass (Zostera marina) light requirements on sediment organic matter in Massachusetts coastal bays: Implications for remediation and restoration. Marine Pollution Bulletin. 83:446-457. 2014
- Long-term variations in primary production in a eutrophic sub-estuary. I. Seasonal and spatial patterns. Marine Ecology - Progress Series. 502:53-67. 2014
- Long-term variations in primary production in a eutrophic sub-estuary. II. Interannual variations and modeling. Marine Ecology - Progress Series. 502:69-83. 2014
- Scientific Bases for Numerical Chlorophyll Criteria in Chesapeake Bay. Estuaries and Coasts. 37:134-148. 2014
- Optical Water Quality of Inland Waters: A Landscape Perspective. Annals of the Association of American Geographers. 103:309-318. 2013
- Influence of near bottom re-suspended sediment on benthic light availability. Estuarine Coastal and Shelf Science. 106:93-101. 2012
- Phytoplankton photosynthetic capacity in a shallow estuary: Environmental correlates and interannual variations. Marine Ecology - Progress Series. 463:23-37. 2012
- Long-term changes in light scattering in Chesapeake Bay inferred from Secchi depth, light attenuation, and remote sensing measurements. Journal of Geophysical Research. 116. 2011
- Calibration of a bio-optical model in the North River, North Carolina (Albemarle-Pamlico Sound): A tool to evaluate water quality impacts on seagrasses. Estuaries and Coasts. 31:177-191. 2008
- Optical closure lakes with contrasting extremes of reflectance. Limnology and Oceanography. 53:2021-2034. 2008

Contact

Location

Smithsonian Environmental Research Center Academic Department