Jeni Keisman, Ph.D.

June 23, 2021

Chesapeake Science Partners Produce Tributary Summaries

Issue The Chesapeake Bay Program (CBP) partnership is striving to improve water-quality conditions in the Bay and its tidal waters. The partnership needs to understand water-quality conditions in different tributaries to help assess the influence of nutrient-reduction practices and progress toward attaining water-quality standards.

By

Core Science Systems Mission Area, Chesapeake Bay Activities

June 23, 2021

Chesapeake Science Partners Produce Tributary Summaries

Issue The Chesapeake Bay Program (CBP) partnership is striving to improve water-quality conditions in the Bay and its tidal waters. The partnership needs to understand water-quality conditions in different tributaries to help assess the influence of nutrient-reduction practices and progress toward attaining water-quality standards.

Learn More

January 21, 2020

USGS leads STAC report on water clarity changes over the past 30 years in Chesapeake Bay

Water clarity is widely recognized as an important indicator of the health and trophic state of aquatic ecosystems and is a key management target given the limit it imposes on the growth of submerged aquatic vegetation (SAV).

By

Core Science Systems Mission Area, Chesapeake Bay Activities

January 21, 2020

USGS leads STAC report on water clarity changes over the past 30 years in Chesapeake Bay

Water clarity is widely recognized as an important indicator of the health and trophic state of aquatic ecosystems and is a key management target given the limit it imposes on the growth of submerged aquatic vegetation (SAV).

Learn More

August 1, 2019

USGS science informs revised water-quality restoration plans for the Chesapeake Bay and its watershed

Science Summary

By

Chesapeake Bay Activities

August 1, 2019

USGS science informs revised water-quality restoration plans for the Chesapeake Bay and its watershed

Science Summary

Learn More

November 23, 2021

USGS Earthmap Capacity Assessment Dataset USGS Earthmap Capacity Assessment Dataset

The U.S. Geological Survey provides a wide range of scientific information to an even wider group of stakeholders. Understanding what capacities are needed and if and or where these capacities exist across the USGS landscape is critical in moving science to the next level of use, implementation, and visualization. The concept behind the groups organized to conduct and interpret the...

December 5, 2018

Aggregated Data Records Describing USDA Conservation Practices Implemented Within the Chesapeake Bay Watershed Aggregated Data Records Describing USDA Conservation Practices Implemented Within the Chesapeake Bay Watershed

This data release contains aggregated data records documenting the implementation of USDA conservation practices on farms within the Chesapeake Bay watershed. The data are supplied as annual totals aggregated by county, and by eight digit hydrologic unit code (HUC-8) watershed. The initial data release covers 2007-2017, and updates are planned for December of each year. The data provided...

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Land Management Research Program, Chesapeake Bay Activities, Lower Mississippi-Gulf Water Science Center

September 25, 2017

Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014 Animal Best Management Practice by Chesapeake Bay Watershed Region From 1985 to 2014

This metadata record covers 18 comma delimited files that support the USGS Scientific Investigations Report Manure and Fertilizer Inputs to Land in the Chesapeake Bay Watershed, 1950-2014 by Jennifer Keisman, Olivia Devereux, Andrew LaMotte, and Andrew Sekellick. The data were created by running scenarios through the Chesapeake Bay Program Partnership Phase 5.3.2 Watershed Model for...

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Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

Filter Total Items: 26

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October 22, 2024

Rappahannock tributary summary: A summary of trends in tidal water quality and associated factors, 1985-2022 Rappahannock tributary summary: A summary of trends in tidal water quality and associated factors, 1985-2022

The Rappahannock Tributary Summary outlines change over time for a suite of monitored tidal water quality parameters and associated potential drivers of those trends for the period of 1985 to 2022, and provides a brief description of the current state of knowledge explaining these observed changes. Water quality parameters described include surface (above pycnocline) total nitrogen (TN)...

Authors

Breck Maura Sullivan, Kaylyn Gootman, Alex Gunnerson, Sarah Betts, Cindy Johnson, Chris A. Mason, Elgin Perry, Gopal Bhatt, Jennifer L. Keisman, James S. Webber, Jon Harcum, Michael F. Lane, Olivia Devereux, Qian Zhang, Rebecca Murphy, Renee Karrh, Thomas Butler, Vanessa Van Note, Angie Wei

November 1, 2023

James Tributary summary: A summary of trends in tidal water quality and associated factors, 1985-2021 James Tributary summary: A summary of trends in tidal water quality and associated factors, 1985-2021

The James Tributary Summary outlines change over time for a suite of monitored tidal water quality parameters and associated potential drivers of those trends for the period 1985 – 2021 and provides a brief description of the current state of knowledge explaining these observed changes. Water quality parameters described include surface (above pycnocline) total nitrogen (TN), surface...

Authors

Breck Maura Sullivan, Kaylyn Gootman, Alex Gunnerson, Cindy Johnson, Chris A. Mason, Elgin Perry, Gopal Bhatt, Jennifer L. Keisman, James S. Webber, Jon Harcum, Mike Lane, Olivia Devereux, Qian Zhang, Rebecca Murphy, Renee Karrh, Tom Butler, Vanessa Van Note, Zhaoying Wei

By

Virginia and West Virginia Water Science Center

June 6, 2023

Progress in reducing nutrient and sediment loads to Chesapeake Bay: Three decades of monitoring data and implications for restoring complex ecosystems Progress in reducing nutrient and sediment loads to Chesapeake Bay: Three decades of monitoring data and implications for restoring complex ecosystems

For over three decades, Chesapeake Bay (USA) has been the focal point of a coordinated restoration strategy implemented through a partnership of governmental and nongovernmental entities, which has been a classical model for coastal restoration worldwide. This synthesis aims to provide resource managers and estuarine scientists with a clearer perspective of the magnitude of changes in...

Authors

Qian Zhang, Joel Blomquist, Rosemary M. Fanelli, Jennifer L. Keisman, Doug L. Moyer, Michael J. Langland

By

Water Resources Mission Area, Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center

May 5, 2023

Estimated reduction of nitrogen in streams of the Chesapeake Bay in areas with agricultural conservation practices Estimated reduction of nitrogen in streams of the Chesapeake Bay in areas with agricultural conservation practices

Spatial data provided by the U.S. Department of Agriculture National Resource Conservation Service representing implementation at the field-level for a selection of agricultural conservation practices were incorporated within a spatially referenced regression model to estimate their effects on nitrogen loads in streams in the Chesapeake Bay watershed. Conservation practices classified as...

Authors

Andrew Sekellick, Scott Ator, Olivia Devereux, Jennifer L. Keisman

By

Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center, Pennsylvania Water Science Center

April 11, 2023

Value-aligned planning objectives for restoring North Carolina aquatic resources Value-aligned planning objectives for restoring North Carolina aquatic resources

Rapid population growth and development in the southeastern United States have resulted in substantial impairment to freshwater aquatic ecosystems. National or regional restoration policies strive to address impaired ecosystems but can suffer from inconsistent and opaque processes. The Clean Water Act, for example, establishes reallocation mechanisms to transfer ecosystem services from...

Authors

Ana María García, Mitchell Eaton, Georgina M. Sanchez, Jennifer L. Keisman, Kirsten Ullman, James Blackwell

By

Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)

October 21, 2022

Integrating principles and tools of decision science into value-driven watershed planning for compensatory mitigation Integrating principles and tools of decision science into value-driven watershed planning for compensatory mitigation

Several environmental policies strive to restore impaired ecosystems and could benefit from a consistent and transparent process — co-developed with key stakeholders — to prioritize impaired ecosystems for restoration activities. The Clean Water Act, for example, establishes reallocation mechanisms to transfer ecosystem services from sites of disturbance to compensation sites to offset...

Authors

Georgina Maria Sanchez Salas, Mitchell Eaton, Ana María García, Jennifer L. Keisman, Kirsten Ullman, James Blackwell, Ross K. Meentemeyer

By

Water Resources Mission Area, South Atlantic Water Science Center (SAWSC)

August 20, 2022

Data synthesis for environmental management: A case study of Chesapeake Bay Data synthesis for environmental management: A case study of Chesapeake Bay

Synthesizing large, complex data sets to inform resource managers towards effective environmental stewardship is a universal challenge. In Chesapeake Bay, a well-studied and intensively monitored estuary in North America, the challenge of synthesizing data on water quality and land use as factors related to a key habitat, submerged aquatic vegetation, was tackled by a team of scientists...

Authors

Robert J. Orth, William C. Dennison, David J. Wilcox, Richard A. Batiuk, Brooke J. Landry, Cassie Gurbisz, Jennifer L. Keisman, Michael P. Hannam, Jonathan S. Lefcheck, Rebecca R. Murphy, Kenneth A. Moore, Christopher J. Patrick, Jeremy Testa, Donald E. Weller, Melissa Merritt, Paige Hobaugh

By

Water Resources Mission Area, Chesapeake Bay Activities

February 7, 2022

Nutrient improvements in Chesapeake Bay: Direct effect of load reductions and implications for coastal management Nutrient improvements in Chesapeake Bay: Direct effect of load reductions and implications for coastal management

In Chesapeake Bay in the United States, decades of management efforts have resulted in modest reductions of nutrient loads from the watershed, but corresponding improvements in estuarine water quality have not clearly materialized. Generalized additive models were used to directly link river flows and nutrient loads from the watershed to nutrient trends in the estuary on a station-by...

Authors

Rebecca R. Murphy, Jennifer L. D. Keisman, Jon Harcum, Renee Karrh, Michael F. Lane, Elgin S. Perry, Qian Zhang

By

Chesapeake Bay Activities

January 1, 2022

Long-term annual aerial surveys of submersed aquatic vegetation (SAV) support science, management, and restoration Long-term annual aerial surveys of submersed aquatic vegetation (SAV) support science, management, and restoration

Aerial surveys of coastal habitats can uniquely inform the science and management of shallow, coastal zones, and when repeated annually, they reveal changes that are otherwise difficult to assess from ground-based surveys. This paper reviews the utility of a long-term (1984-present) annual aerial monitoring program for submersed aquatic vegetation (SAV) in Chesapeake Bay, its tidal...

Authors

Robert J. Orth, William C. Dennison, Cassie Gurbisz, Michael P. Hannam, Jennifer L. Keisman, J. Brooke Landry, Jonathan S. Lefcheck, Kenneth A. Moore, Rebecca Murphy, Christopher J. Patrick, Jeremy Testa, Donald E. Weller, David J. Wilcox, Richard A. Batiuk

By

Chesapeake Bay Activities

November 29, 2021

Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey Capacity assessment for Earth Monitoring, Analysis, and Prediction (EarthMAP) and future integrated monitoring and predictive science at the U.S. Geological Survey

Executive SummaryManagers of our Nation’s resources face unprecedented challenges driven by the convergence of increasing, competing societal demands and a changing climate that affects the stability, vulnerability, and predictability of those resources. To help meet these challenges, the scientific community must take advantage of all available technologies, data, and integrative Earth...

Authors

Jennifer L. Keisman, Sky Bristol, David S. Brown, Allison K. Flickinger, Gregory L. Gunther, Peter S. Murdoch, MaryLynn Musgrove, John C. Nelson, Gregory D. Steyer, Kathryn A. Thomas, Ian R. Waite

By

Ecosystems Mission Area, Water Resources Mission Area, Science Synthesis, Analysis and Research Program, Science Analytics and Synthesis (SAS) Program, Energy Resources Program, Geology, Energy & Minerals Science Center, Oklahoma-Texas Water Science Center, Oregon Water Science Center, Southwest Biological Science Center, Upper Midwest Environmental Sciences Center, Wetland and Aquatic Research Center

November 10, 2021

Nitrogen in the Chesapeake Bay watershed—A century of change, 1950–2050 Nitrogen in the Chesapeake Bay watershed—A century of change, 1950–2050

ForewordSustaining the quality of the Nation’s water resources and the health of our diverse ecosystems depends on the availability of sound water-resources data and information to develop effective, science-based policies. Effective management of water resources also brings more certainty and efficiency to important economic sectors. Taken together, these actions lead to immediate and...

Authors

John W. Clune, Paul D. Capel, Matthew P. Miller, Douglas A. Burns, Andrew J. Sekellick, Peter R. Claggett, Richard H. Coupe, Rosemary M. Fanelli, Ana Maria Garcia, Jeff P. Raffensperger, Silvia Terziotti, Gopal Bhatt, Joel D. Blomquist, Kristina G. Hopkins, Jennifer L. Keisman, Lewis C. Linker, Gary W. Shenk, Richard A. Smith, Alexander M. Soroka, James S. Webber, David M. Wolock, Qian Zhang

By

Water Resources Mission Area, Chesapeake Bay Activities, Maryland-Delaware-D.C. Water Science Center, New York Water Science Center, Pennsylvania Water Science Center, South Atlantic Water Science Center (SAWSC), Utah Water Science Center, Virginia and West Virginia Water Science Center

January 26, 2021

Nutrient trends and drivers in the Chesapeake Bay Watershed Nutrient trends and drivers in the Chesapeake Bay Watershed

The Chesapeake Bay Program maintains an extensive nontidal monitoring network, measuring nitrogen and phosphorus (nutrients) at more than 100 locations on rivers and streams in the watershed. Data from these locations are used by United States Geological Survey to assess the ecosystem’s response to nutrient-reduction efforts. This fact sheet summarizes recent trends in nitrogen and...

Authors

Kenneth Hyer, Scott W. Phillips, Scott W. Ator, Doug L. Moyer, James S. Webber, Rachel Felver, Jennifer L. Keisman, Lee A. McDonnell, Rebecca Murphy, Emily M. Trentacoste, Qian Zhang, William C. Dennison, Sky Swanson, Brianne Walsh, Jane Hawkey, Dylan Taillie

By

Chesapeake Bay Activities, Pennsylvania Water Science Center, Virginia and West Virginia Water Science Center

Jeni Keisman, Ph.D.

USGS scientists contribute to independent study evaluating why progress in achieving Bay water quality goals is lagging

Manure and fertilizer inputs to land in the Chesapeake Bay watershed, 1950–2012 Scientific Investigations Report 2018-5022

USGS scientists contribute to independent study evaluating why progress in achieving Bay water quality goals is lagging

Manure and fertilizer inputs to land in the Chesapeake Bay watershed, 1950–2012 Scientific Investigations Report 2018-5022

Jeni Keisman, Ph.D.

Professional Experience

Education and Certifications

Science and Products

Chesapeake Science Partners Produce Tributary Summaries

USGS leads STAC report on water clarity changes over the past 30 years in Chesapeake Bay

USGS science informs revised water-quality restoration plans for the Chesapeake Bay and its watershed

USGS scientists contribute to independent study evaluating why progress in achieving Bay water quality goals is lagging

Manure and fertilizer inputs to land in the Chesapeake Bay watershed, 1950–2012 Scientific Investigations Report 2018-5022

Science and Products

Chesapeake Science Partners Produce Tributary Summaries

USGS leads STAC report on water clarity changes over the past 30 years in Chesapeake Bay

USGS science informs revised water-quality restoration plans for the Chesapeake Bay and its watershed

USGS scientists contribute to independent study evaluating why progress in achieving Bay water quality goals is lagging

Manure and fertilizer inputs to land in the Chesapeake Bay watershed, 1950–2012 Scientific Investigations Report 2018-5022