Kevin A Ryan
Kevin Ryan is a Hydrologist in the Integrated Ecosystems Studies Section in the New York Water Science Center.
Kevin Ryan conducts research on current issues in environmental science with a specific focus on biogeochemical cycling at the intersection of terrestrial and aquatic ecosystems. Kevin utilizes long-term monitoring records, real-time environmental sensor data, and advanced chemical analysis techniques to quantify changes in environmental processes and water quality. Collaboration with the New York Water Science Center Laboratory in Troy, NY, supports soil and water analyses. Kevin leads studies that span across New York State and the nation, providing information and understanding that support informed natural resource management decisions.
Professional Experience
2022 - Present, Hydrologist, New York Water Science Center, USGS
Education and Certifications
Ph.D. Marine and Environmental Science, Northeastern University, 2022
B.S. Winthrop University, 2011
Project Management Professional (PMP) Certification, Project Management Institute, 2015 - Present
Science and Products
Storm Event Dissolved Organic Carbon and Total Dissolved Nitrogen Concentrations and Yields for Precipitation, Throughfall, Stemflow, and Stream Water and Hourly Streamflow and Precipitation Record for the W-9 Catchment, Sleepers River Research Watershed, Storm Event Dissolved Organic Carbon and Total Dissolved Nitrogen Concentrations and Yields for Precipitation, Throughfall, Stemflow, and Stream Water and Hourly Streamflow and Precipitation Record for the W-9 Catchment, Sleepers River Research Watershed,
This dataset describes water yields for precipitation, throughfall, and stemflow for 22 rain events within the 40.5-hectare (ha) forested W-9 catchment at Sleepers River, Vermont. Sampling occurred during the summer and fall of 2018. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations are reported for each sampled event. The dataset also includes 5-minute...
Evaluating streamwater dissolved organic carbon dynamics in context of variable flowpath contributions with a tracer-based mixing model Evaluating streamwater dissolved organic carbon dynamics in context of variable flowpath contributions with a tracer-based mixing model
This study focuses on characterizing the contributions of key terrestrial pathways that deliver dissolved organic carbon (DOC) to streams during hydrological events and on elucidating factors governing variation in water and DOC fluxes from these pathways. We made high-frequency measurements of discharge, specific conductance (SC), and fluorescent dissolved organic matter (FDOM) during...
Authors
James E. Saiers, Jennifer H. Fair, James B. Shanley, J.D. Hosen, Serena Matt, Kevin A Ryan, P.A. Raymond
Event scale relationships of DOC and TDN fluxes in throughfall and stemflow diverge from stream exports in a forested catchment Event scale relationships of DOC and TDN fluxes in throughfall and stemflow diverge from stream exports in a forested catchment
Aquatic fluxes of carbon and nutrients link terrestrial and aquatic ecosystems. Within forests, storm events drive both the delivery of carbon and nitrogen to the forest floor and the export of these solutes from the land via streams. To increase understanding of the relationships between hydrologic event character and the relative fluxes of carbon and nitrogen in throughfall, stemflow...
Authors
Kevin A. Ryan, Thomas Adler, Ann T. Chalmers, Julia Perdrial, James B. Shanley, Aron Stubbins
Non-USGS Publications**
Ryan, K.A., Chaverra Palacios, L., Encina, F., Graeber, D., Osorio, S., Stubbins, A., Woelfl, S., Nimptsch, J. (2022), Assessing inputs of aquaculture-derived nutrients to streams using dissolved organic matter fluorescence, Science of The Total Environment, Volume 807, Part 2, 150785, ISSN 0048-9697, doi: 10.1016/j.scitotenv.2021.150785.
Stubbins A, Ryan K and Van Stan J. (2022), How Trees Make Tea. Front. Young Minds, 10:703704, doi: 10.3389/frym.2022.703704.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.
Science and Products
Storm Event Dissolved Organic Carbon and Total Dissolved Nitrogen Concentrations and Yields for Precipitation, Throughfall, Stemflow, and Stream Water and Hourly Streamflow and Precipitation Record for the W-9 Catchment, Sleepers River Research Watershed, Storm Event Dissolved Organic Carbon and Total Dissolved Nitrogen Concentrations and Yields for Precipitation, Throughfall, Stemflow, and Stream Water and Hourly Streamflow and Precipitation Record for the W-9 Catchment, Sleepers River Research Watershed,
This dataset describes water yields for precipitation, throughfall, and stemflow for 22 rain events within the 40.5-hectare (ha) forested W-9 catchment at Sleepers River, Vermont. Sampling occurred during the summer and fall of 2018. Dissolved organic carbon (DOC) and total dissolved nitrogen (TDN) concentrations are reported for each sampled event. The dataset also includes 5-minute...
Evaluating streamwater dissolved organic carbon dynamics in context of variable flowpath contributions with a tracer-based mixing model Evaluating streamwater dissolved organic carbon dynamics in context of variable flowpath contributions with a tracer-based mixing model
This study focuses on characterizing the contributions of key terrestrial pathways that deliver dissolved organic carbon (DOC) to streams during hydrological events and on elucidating factors governing variation in water and DOC fluxes from these pathways. We made high-frequency measurements of discharge, specific conductance (SC), and fluorescent dissolved organic matter (FDOM) during...
Authors
James E. Saiers, Jennifer H. Fair, James B. Shanley, J.D. Hosen, Serena Matt, Kevin A Ryan, P.A. Raymond
Event scale relationships of DOC and TDN fluxes in throughfall and stemflow diverge from stream exports in a forested catchment Event scale relationships of DOC and TDN fluxes in throughfall and stemflow diverge from stream exports in a forested catchment
Aquatic fluxes of carbon and nutrients link terrestrial and aquatic ecosystems. Within forests, storm events drive both the delivery of carbon and nitrogen to the forest floor and the export of these solutes from the land via streams. To increase understanding of the relationships between hydrologic event character and the relative fluxes of carbon and nitrogen in throughfall, stemflow...
Authors
Kevin A. Ryan, Thomas Adler, Ann T. Chalmers, Julia Perdrial, James B. Shanley, Aron Stubbins
Non-USGS Publications**
Ryan, K.A., Chaverra Palacios, L., Encina, F., Graeber, D., Osorio, S., Stubbins, A., Woelfl, S., Nimptsch, J. (2022), Assessing inputs of aquaculture-derived nutrients to streams using dissolved organic matter fluorescence, Science of The Total Environment, Volume 807, Part 2, 150785, ISSN 0048-9697, doi: 10.1016/j.scitotenv.2021.150785.
Stubbins A, Ryan K and Van Stan J. (2022), How Trees Make Tea. Front. Young Minds, 10:703704, doi: 10.3389/frym.2022.703704.
**Disclaimer: The views expressed in Non-USGS publications are those of the author and do not represent the views of the USGS, Department of the Interior, or the U.S. Government.