Kathi Jo Jankowski, PhD
Kathi Jo Jankowski is the Principal Investigator for the Water Quality Component of the Upper Mississippi River Restoration Program's Long-term Resource Monitoring Element.
She coordinates water quality monitoring and research on the Upper Mississippi in coordination with several federal and state agencies. Her research aims to provide understanding on how aquatic ecosystems are responding to ongoing environmental change. Her work focuses on understanding nutrients, biogeochemical processes, and productivity in the Upper Mississippi and other river ecosystems globally.
Science and Products
Filter Total Items: 25
The ecology of river ice The ecology of river ice
Many of the world's rivers are ice-covered during winter months but increasing evidence indicates that the extent of river ice will shift substantially as winters warm. However, our knowledge of rivers during winter lags far behind that of the growing season, limiting our understanding of how ice loss will affect rivers. Physical, chemical, and biological processes change from headwaters...
Authors
Audrey Thellman, Kathi Jankowski, Brian Hayden, Xiao Yang, Wayana Dolan, Adrianne Smits, Antoin O’Sullivan
Warmer winters increase the biomass of phytoplankton in a large floodplain river Warmer winters increase the biomass of phytoplankton in a large floodplain river
Winters are changing rapidly across the globe but the implications for aquatic productivity and food webs are not well understood. In addition, the degree to which winter dynamics in aquatic systems respond to large-scale climate versus ecosystem-level factors is unclear but important for understanding and managing potential changes. We used a unique winter data set from the Upper...
Authors
Kathi Jankowski, Jeffrey Houser, Mark Schuerell, Adrianne Smits
Land use change influences ecosystem function in headwater streams of the Lowland Amazon Basin Land use change influences ecosystem function in headwater streams of the Lowland Amazon Basin
Intensive agriculture alters headwater streams, but our understanding of its effects is limited in tropical regions where rates of agricultural expansion and intensification are currently greatest. Riparian forest protections are an important conservation tool, but whether they provide adequate protection of stream function in these areas of rapid tropical agricultural development has...
Authors
Kathi Jankowski, Linda Deegan, Christopher Neill, HIllary Sullivan, Paulo Ilha, Leonardo Maracahipes-Santos, Nubia Marques, Marcia N. Macedo
Riparian forests buffer the negative effects of cropland on macroinvertebrate diversity in lowland Amazonian streams Riparian forests buffer the negative effects of cropland on macroinvertebrate diversity in lowland Amazonian streams
Riparian forests regulate stream ecosystems and biodiversity. Therefore, changes to riparian structure may threaten stream ecosystem function by triggering taxonomic and functional changes to aquatic communities. Because macroinvertebrate assemblages are sensitive to environmental changes, they can be effective indicators of stream integrity in disturbed landscapes. To assess the role of...
Authors
Nubia Marques, Kathi Jankowski, Marcia N. Macedo, Leandro Juen, Ana Luiza-Andrade, Linda Deegan
Aquatic ecosystem metabolism as a tool in environmental management Aquatic ecosystem metabolism as a tool in environmental management
Recent advances in high-frequency environmental sensing and statistical approaches have greatly expanded the breadth of knowledge regarding aquatic ecosystem metabolism - the measurement and interpretation of gross primary productivity (GPP) and ecosystem respiration (ER). Aquatic scientists are poised to take advantage of widely available datasets and freely-available modeling tools to...
Authors
Kathi Jankowski, Francine Mejia, Joanna Blaszczak, Gordon Holtgrieve
Agricultural land-use change alters the structure and diversity of Amazon riparian forests Agricultural land-use change alters the structure and diversity of Amazon riparian forests
Riparian forests play key roles in protecting biodiversity and water resources, making them priorities for conservation in human-dominated landscapes, but fragmentation associated with expanding tropical croplands threatens their ecological integrity. We compared the structure of tropical riparian forests within intact and cropland catchments in a region of intensive soybean production...
Authors
Leonardo Maracahipes-Santos, Divino Silverio, Marcia Macedo, Leandro Maracahipes, Kathi Jankowski, Lucas Paolucci, Christopher Neill, Paulo Brando
Using Markov chains to quantitatively assess movement patterns of invasive fishes impacted by a carbon dioxide barrier in outdoor ponds Using Markov chains to quantitatively assess movement patterns of invasive fishes impacted by a carbon dioxide barrier in outdoor ponds
Natural resource managers use barriers to deter the movement of aquatic invasive species. Research and development of new invasive species barriers is often evaluated in pond and field scales using high‐resolution telemetry data. Telemetry data sets can be a rich source of data about fish movement and behavior but can be difficult to analyze due to the size of these data sets as well as...
Authors
Lauren Borland, Collin Mulcahy, Barb Bennie, Douglas Baumann, Roger Haro, Molly Van Appledorn, Kathi Jankowski, Aaron Cupp, Richard Erickson
Integrating perspectives to understand lake ice dynamics in a changing world Integrating perspectives to understand lake ice dynamics in a changing world
Ice cover plays a critical role in physical, biogeochemical, and ecological processes in lakes. Despite its importance, winter limnology remains relatively understudied. Here, we provide a primer on the predominant drivers of freshwater lake ice cover and the current methodologies used to study lake ice, including in situ and remote sensing observations, physical based models, and...
Authors
Sapna Sharma, Michael Meyer, Joshua Culpepper, Xiao Yang, Stephanie Hampton, Stella Berger, Matthew Brousil, Steven Fradkin, Scott Higgins, Kathi Jankowski, Georgiy Kirillin, Adrianne Smits, Emily Whitaker, Foad Yousef, Shuai Zhang
Mapping the thermal landscape of the Upper Mississippi River Mapping the thermal landscape of the Upper Mississippi River
Temperature has a fundamental influence on physical, chemical and biological processing in aquatic ecosystems. River temperatures respond to a diverse array of drivers including air temperature, streamflow, and thermal inputs, but the physical template has been shown to play a significant role in structuring spatial and temporal variation in water temperature. How these factors interact...
Authors
Kathi Jankowski, Larry Robinson, John Kalas, Alicia Carhart, Brian Lubinski, Janis Ruhser
Watershed geomorphology modifies the sensitivity of aquatic ecosystem metabolism to temperature Watershed geomorphology modifies the sensitivity of aquatic ecosystem metabolism to temperature
How carbon cycles are regulated by environmental temperature remains a substantial uncertainty in our understanding of how watersheds will respond to ongoing climate change. Aquatic ecosystems are important components of carbon flux to the atmosphere and ocean, yet we have limited understanding of how temperature modifies ecosystem metabolic processes and, therefore, aquatic...
Authors
Kathi Jankowski, Daniel E. Schindler
Exploring silica stoichiometry on a large floodplain riverscape Exploring silica stoichiometry on a large floodplain riverscape
Freshwater ecosystems are critical zones of nutrient and carbon (C) processing along the land-sea continuum. Relative to our understanding of C, nitrogen (N), and phosphorus (P) cycling within the freshwater systems, the controls on silicon (Si) cycling and export are less understood. Understanding Si biogeochemistry and its coupled biogeochemical processing with N and P has direct...
Authors
Joanna Carey, Kathi Jankowski, Paul Julian, Lienne Sethna, Patrick Thomas, Jason Rohweder
Identifying the molecular signatures of agricultural expansion in Amazonian headwater streams Identifying the molecular signatures of agricultural expansion in Amazonian headwater streams
Agricultural impacts on aquatic ecosystems are well-studied, however, most research has focused on temperate regions, whereas the forefront of agricultural expansion is currently in the tropics. At the vanguard of this growth is the boundary between the Amazon and Cerrado biomes in Brazil, driven primarily by expansion of soybean and corn croplands. Here we examine the impacts of...
Authors
Robert G.M. Spencer, Anne Kellerman, David Podgorski, Marcia N. Macedo, Kathi Jankowski, Darlisson Nunes, Christopher Neill
Science and Products
Filter Total Items: 25
The ecology of river ice The ecology of river ice
Many of the world's rivers are ice-covered during winter months but increasing evidence indicates that the extent of river ice will shift substantially as winters warm. However, our knowledge of rivers during winter lags far behind that of the growing season, limiting our understanding of how ice loss will affect rivers. Physical, chemical, and biological processes change from headwaters...
Authors
Audrey Thellman, Kathi Jankowski, Brian Hayden, Xiao Yang, Wayana Dolan, Adrianne Smits, Antoin O’Sullivan
Warmer winters increase the biomass of phytoplankton in a large floodplain river Warmer winters increase the biomass of phytoplankton in a large floodplain river
Winters are changing rapidly across the globe but the implications for aquatic productivity and food webs are not well understood. In addition, the degree to which winter dynamics in aquatic systems respond to large-scale climate versus ecosystem-level factors is unclear but important for understanding and managing potential changes. We used a unique winter data set from the Upper...
Authors
Kathi Jankowski, Jeffrey Houser, Mark Schuerell, Adrianne Smits
Land use change influences ecosystem function in headwater streams of the Lowland Amazon Basin Land use change influences ecosystem function in headwater streams of the Lowland Amazon Basin
Intensive agriculture alters headwater streams, but our understanding of its effects is limited in tropical regions where rates of agricultural expansion and intensification are currently greatest. Riparian forest protections are an important conservation tool, but whether they provide adequate protection of stream function in these areas of rapid tropical agricultural development has...
Authors
Kathi Jankowski, Linda Deegan, Christopher Neill, HIllary Sullivan, Paulo Ilha, Leonardo Maracahipes-Santos, Nubia Marques, Marcia N. Macedo
Riparian forests buffer the negative effects of cropland on macroinvertebrate diversity in lowland Amazonian streams Riparian forests buffer the negative effects of cropland on macroinvertebrate diversity in lowland Amazonian streams
Riparian forests regulate stream ecosystems and biodiversity. Therefore, changes to riparian structure may threaten stream ecosystem function by triggering taxonomic and functional changes to aquatic communities. Because macroinvertebrate assemblages are sensitive to environmental changes, they can be effective indicators of stream integrity in disturbed landscapes. To assess the role of...
Authors
Nubia Marques, Kathi Jankowski, Marcia N. Macedo, Leandro Juen, Ana Luiza-Andrade, Linda Deegan
Aquatic ecosystem metabolism as a tool in environmental management Aquatic ecosystem metabolism as a tool in environmental management
Recent advances in high-frequency environmental sensing and statistical approaches have greatly expanded the breadth of knowledge regarding aquatic ecosystem metabolism - the measurement and interpretation of gross primary productivity (GPP) and ecosystem respiration (ER). Aquatic scientists are poised to take advantage of widely available datasets and freely-available modeling tools to...
Authors
Kathi Jankowski, Francine Mejia, Joanna Blaszczak, Gordon Holtgrieve
Agricultural land-use change alters the structure and diversity of Amazon riparian forests Agricultural land-use change alters the structure and diversity of Amazon riparian forests
Riparian forests play key roles in protecting biodiversity and water resources, making them priorities for conservation in human-dominated landscapes, but fragmentation associated with expanding tropical croplands threatens their ecological integrity. We compared the structure of tropical riparian forests within intact and cropland catchments in a region of intensive soybean production...
Authors
Leonardo Maracahipes-Santos, Divino Silverio, Marcia Macedo, Leandro Maracahipes, Kathi Jankowski, Lucas Paolucci, Christopher Neill, Paulo Brando
Using Markov chains to quantitatively assess movement patterns of invasive fishes impacted by a carbon dioxide barrier in outdoor ponds Using Markov chains to quantitatively assess movement patterns of invasive fishes impacted by a carbon dioxide barrier in outdoor ponds
Natural resource managers use barriers to deter the movement of aquatic invasive species. Research and development of new invasive species barriers is often evaluated in pond and field scales using high‐resolution telemetry data. Telemetry data sets can be a rich source of data about fish movement and behavior but can be difficult to analyze due to the size of these data sets as well as...
Authors
Lauren Borland, Collin Mulcahy, Barb Bennie, Douglas Baumann, Roger Haro, Molly Van Appledorn, Kathi Jankowski, Aaron Cupp, Richard Erickson
Integrating perspectives to understand lake ice dynamics in a changing world Integrating perspectives to understand lake ice dynamics in a changing world
Ice cover plays a critical role in physical, biogeochemical, and ecological processes in lakes. Despite its importance, winter limnology remains relatively understudied. Here, we provide a primer on the predominant drivers of freshwater lake ice cover and the current methodologies used to study lake ice, including in situ and remote sensing observations, physical based models, and...
Authors
Sapna Sharma, Michael Meyer, Joshua Culpepper, Xiao Yang, Stephanie Hampton, Stella Berger, Matthew Brousil, Steven Fradkin, Scott Higgins, Kathi Jankowski, Georgiy Kirillin, Adrianne Smits, Emily Whitaker, Foad Yousef, Shuai Zhang
Mapping the thermal landscape of the Upper Mississippi River Mapping the thermal landscape of the Upper Mississippi River
Temperature has a fundamental influence on physical, chemical and biological processing in aquatic ecosystems. River temperatures respond to a diverse array of drivers including air temperature, streamflow, and thermal inputs, but the physical template has been shown to play a significant role in structuring spatial and temporal variation in water temperature. How these factors interact...
Authors
Kathi Jankowski, Larry Robinson, John Kalas, Alicia Carhart, Brian Lubinski, Janis Ruhser
Watershed geomorphology modifies the sensitivity of aquatic ecosystem metabolism to temperature Watershed geomorphology modifies the sensitivity of aquatic ecosystem metabolism to temperature
How carbon cycles are regulated by environmental temperature remains a substantial uncertainty in our understanding of how watersheds will respond to ongoing climate change. Aquatic ecosystems are important components of carbon flux to the atmosphere and ocean, yet we have limited understanding of how temperature modifies ecosystem metabolic processes and, therefore, aquatic...
Authors
Kathi Jankowski, Daniel E. Schindler
Exploring silica stoichiometry on a large floodplain riverscape Exploring silica stoichiometry on a large floodplain riverscape
Freshwater ecosystems are critical zones of nutrient and carbon (C) processing along the land-sea continuum. Relative to our understanding of C, nitrogen (N), and phosphorus (P) cycling within the freshwater systems, the controls on silicon (Si) cycling and export are less understood. Understanding Si biogeochemistry and its coupled biogeochemical processing with N and P has direct...
Authors
Joanna Carey, Kathi Jankowski, Paul Julian, Lienne Sethna, Patrick Thomas, Jason Rohweder
Identifying the molecular signatures of agricultural expansion in Amazonian headwater streams Identifying the molecular signatures of agricultural expansion in Amazonian headwater streams
Agricultural impacts on aquatic ecosystems are well-studied, however, most research has focused on temperate regions, whereas the forefront of agricultural expansion is currently in the tropics. At the vanguard of this growth is the boundary between the Amazon and Cerrado biomes in Brazil, driven primarily by expansion of soybean and corn croplands. Here we examine the impacts of...
Authors
Robert G.M. Spencer, Anne Kellerman, David Podgorski, Marcia N. Macedo, Kathi Jankowski, Darlisson Nunes, Christopher Neill