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 understand how land use and climate change impact ecosystem
Science and Products
Dissolved silicon concentration and yield estimates from streams and rivers in North America and Antarctica,1964-2021
These data include dissolved silicon concentration and yield from 60 rivers across North America, the Caribbean, and Antarctica from 1964-2021 and are associated with the publication “Long-term change in concentration and yield of riverine dissolved silicon from the poles to the tropics”. Data were compiled from multiple public sources including the Long-term Ecological Research Network, Great Arc
Continuous water quality sensor data from the main channel and a backwater of the Upper Mississippi River from 2015-2018
This dataset includes high-frequency sensor data collected during four consecutive summers from buoys deployed at main channel and backwater sites in Pool 8 of the Upper Mississippi River from 2015-2018. It also includes the event-specific concentration-discharge metrics (hysteresis and slope) calculated by combining the water quality sensor data with discharge data from a nearby USGS gage in Wino
Land cover, discharge, terrestrial litterfall, organic matter, and nutrient concentrations of headwater streams in Mato Grosso, Brazil
These data were collected as part of a study headwater streams of the lowland Brazilian Amazon to assess the effects of land use change on organic matter dynamics (OM), ecosystem metabolism, and nutrient concentrations and uptake (nitrate and phosphate) in 11 first order streams draining forested (n=4) or cropland (n=7) water-sheds with intact riparian forests. Data included here are from 10 strea
Filter Total Items: 18
Establishing fluvial silicon regimes and their stability across the Northern Hemisphere
Fluvial silicon (Si) plays a critical role in controlling primary production, water quality, and carbon sequestration through supporting freshwater and marine diatom communities. Geological, biogeochemical, and hydrological processes, as well as climate and land use, dictate the amount of Si exported by streams. Understanding Si regimes—the seasonal patterns of Si concentrations—can help identify
Authors
Keira Johnson, Kathi Jo Jankowski, Joanna C. Carey, Nicholas Lyon, William H. McDowell, Arial J. Shogren, Adam S. Wymore, Lienne R. Sethna, Wilfred M. Wollheim, Amanda Poste, Pirkko Kortelainen, Ruth C. Heindel, Hjalmar Laudon, Antti Raike, Jeremy B. Jones, Diane M. McKnight, Paul Julian, Sidney A. Bush, Pamela L. Sullivan
Intrinsic and extrinsic regulation of water clarity in a large, floodplain-river ecosystem
Ecosystem processes in rivers are thought to be controlled more by extrinsic than intrinsic factors, that is, the result of processes that occur upstream or within their watersheds. However, large floodplain rivers have a diverse assemblage of aquatic areas spanning gradients of connectivity with the main channel and internal controls may at times regulate long-term dynamics. When and where intern
Authors
Alicia Carhart, Deanne C. Drake, James R. Fischer, Jeffrey N. Houser, Kathi Jo Jankowski, John E. Kalas, Eric M. Lund
Bridging the gap between mathematical biology and undergraduate education using applicable natural resource modeling
Mathematical biology is a wide field of study with many venues that undergraduate students can access through research. However, the topics of study for these students can be overwhelming, and many topics of study yield either only trivial results or abstract outcomes that are nonintuitive and diffcult to understand. We have used natural resource modeling, and more specifically, a partnership betw
Authors
Richard A. Erickson, Douglas Baumann, Barbara Bennie, Wako Bungula, Aaron R. Cupp, James E. Diffendorfer, Eric A. Eager, Roger J. Haro, Kathi Jo Jankowski, Danelle M. Larson, Greg J. Sandland, Molly Van Appledorn, James P Peirce
Long-term changes in concentrations and yield of riverine dissolved silicon from the poles to the tropics
Riverine exports of silicon (Si) influence global carbon cycling through the growth of marine diatoms, which account for ∼25% of global primary production. Climate change will likely alter river Si exports in biome-specific ways due to interacting shifts in chemical weathering rates, hydrologic connectivity, and metabolic processes in aquatic and terrestrial systems. Nonetheless, factors driving l
Authors
Kathi Jo Jankowski, Keira Johnson, Lienne R. Sethna, Paul Julian, Adam S. Wymore, Arial J. Shogren, Patrick Thomas, Pamela L. Sullivan, Diane M. McKnight, William H. McDowell, Ruth C. Heindel, Jeremy B. Jones, Wilfred M. Wollheim, Benjamin Abbott, Linda A. Deegan, Joanna C. Carey
Intraspecific trait variability facilitates tree species persistence along riparian forest edges in Southern Amazonia
Tropical forest fragmentation from agricultural expansion alters the microclimatic conditions of the remaining forests, with effects on vegetation structure and function. However, little is known about how the functional trait variability within and among tree species in fragmented landscapes influence and facilitate species’ persistence in these new environmental conditions. Here, we assessed pot
Authors
Leonardo Maracahipes-Santos, Divino Vicente Silvério, Leandro Maracahipes, Marcia N. Macedo, Eddie Lenza, Kathi Jo Jankowski, Michelle Wong, Antônio Carlos Silveiro da Silva, Christopher Neill, Giselda Durigan, Paulo Brando
River geomorphology affects biogeochemical responses to hydrologic events in a large river ecosystem
Shifts in the frequency and intensity of high discharge events due to climate change may have important consequences for the hydrology and biogeochemistry of rivers. However, our understanding of event-scale biogeochemical dynamics in large rivers lags that of small streams. To fill this gap, we used high-frequency sensor data collected during four consecutive summers from a main channel and backw
Authors
Taryn Waite, Kathi Jo Jankowski, Denise Bruesewitz, Molly Van Appledorn, Megan Johnston, Jeffrey N. Houser, Douglas Baumann, Barbara Bennie
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 to large
Authors
Audrey Thellman, Kathi Jo Jankowski, Brian Hayden, Xiao Yang, Wayana Dolan, Adrianne P Smits, Antoin M O'Sullivan
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 Mississippi Rive
Authors
Kathi Jo Jankowski, Jeffrey N. Houser, Mark D. Schuerell, Adrianne P Smits
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 not been wel
Authors
Kathi Jo Jankowski, Linda A. Deegan, Christopher Neill, HIllary L. Sullivan, Paulo Ilha, Leonardo Maracahipes-Santos, Nubia C.S. Marques, Marcia N. Macedo
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 riparian
Authors
Nubia C.S. Marques, Kathi Jo Jankowski, Marcia N. Macedo, Leandro Juen, Ana Luiza-Andrade, Linda A. Deegan
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 apply func
Authors
Kathi Jo Jankowski, Francine H. Mejia, Joanna Blaszczak, Gordon W. Holtgrieve
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 their irre
Authors
Lauren K Borland, Collin J Mulcahy, Barb Bennie, Douglas D Baumann, Roger J. Haro, Molly Van Appledorn, Kathi Jo Jankowski, Aaron R. Cupp, Richard A. Erickson
Science and Products
- Data
Dissolved silicon concentration and yield estimates from streams and rivers in North America and Antarctica,1964-2021
These data include dissolved silicon concentration and yield from 60 rivers across North America, the Caribbean, and Antarctica from 1964-2021 and are associated with the publication “Long-term change in concentration and yield of riverine dissolved silicon from the poles to the tropics”. Data were compiled from multiple public sources including the Long-term Ecological Research Network, Great ArcContinuous water quality sensor data from the main channel and a backwater of the Upper Mississippi River from 2015-2018
This dataset includes high-frequency sensor data collected during four consecutive summers from buoys deployed at main channel and backwater sites in Pool 8 of the Upper Mississippi River from 2015-2018. It also includes the event-specific concentration-discharge metrics (hysteresis and slope) calculated by combining the water quality sensor data with discharge data from a nearby USGS gage in WinoLand cover, discharge, terrestrial litterfall, organic matter, and nutrient concentrations of headwater streams in Mato Grosso, Brazil
These data were collected as part of a study headwater streams of the lowland Brazilian Amazon to assess the effects of land use change on organic matter dynamics (OM), ecosystem metabolism, and nutrient concentrations and uptake (nitrate and phosphate) in 11 first order streams draining forested (n=4) or cropland (n=7) water-sheds with intact riparian forests. Data included here are from 10 strea - Publications
Filter Total Items: 18
Establishing fluvial silicon regimes and their stability across the Northern Hemisphere
Fluvial silicon (Si) plays a critical role in controlling primary production, water quality, and carbon sequestration through supporting freshwater and marine diatom communities. Geological, biogeochemical, and hydrological processes, as well as climate and land use, dictate the amount of Si exported by streams. Understanding Si regimes—the seasonal patterns of Si concentrations—can help identifyAuthorsKeira Johnson, Kathi Jo Jankowski, Joanna C. Carey, Nicholas Lyon, William H. McDowell, Arial J. Shogren, Adam S. Wymore, Lienne R. Sethna, Wilfred M. Wollheim, Amanda Poste, Pirkko Kortelainen, Ruth C. Heindel, Hjalmar Laudon, Antti Raike, Jeremy B. Jones, Diane M. McKnight, Paul Julian, Sidney A. Bush, Pamela L. SullivanIntrinsic and extrinsic regulation of water clarity in a large, floodplain-river ecosystem
Ecosystem processes in rivers are thought to be controlled more by extrinsic than intrinsic factors, that is, the result of processes that occur upstream or within their watersheds. However, large floodplain rivers have a diverse assemblage of aquatic areas spanning gradients of connectivity with the main channel and internal controls may at times regulate long-term dynamics. When and where internAuthorsAlicia Carhart, Deanne C. Drake, James R. Fischer, Jeffrey N. Houser, Kathi Jo Jankowski, John E. Kalas, Eric M. LundBridging the gap between mathematical biology and undergraduate education using applicable natural resource modeling
Mathematical biology is a wide field of study with many venues that undergraduate students can access through research. However, the topics of study for these students can be overwhelming, and many topics of study yield either only trivial results or abstract outcomes that are nonintuitive and diffcult to understand. We have used natural resource modeling, and more specifically, a partnership betwAuthorsRichard A. Erickson, Douglas Baumann, Barbara Bennie, Wako Bungula, Aaron R. Cupp, James E. Diffendorfer, Eric A. Eager, Roger J. Haro, Kathi Jo Jankowski, Danelle M. Larson, Greg J. Sandland, Molly Van Appledorn, James P PeirceLong-term changes in concentrations and yield of riverine dissolved silicon from the poles to the tropics
Riverine exports of silicon (Si) influence global carbon cycling through the growth of marine diatoms, which account for ∼25% of global primary production. Climate change will likely alter river Si exports in biome-specific ways due to interacting shifts in chemical weathering rates, hydrologic connectivity, and metabolic processes in aquatic and terrestrial systems. Nonetheless, factors driving lAuthorsKathi Jo Jankowski, Keira Johnson, Lienne R. Sethna, Paul Julian, Adam S. Wymore, Arial J. Shogren, Patrick Thomas, Pamela L. Sullivan, Diane M. McKnight, William H. McDowell, Ruth C. Heindel, Jeremy B. Jones, Wilfred M. Wollheim, Benjamin Abbott, Linda A. Deegan, Joanna C. CareyIntraspecific trait variability facilitates tree species persistence along riparian forest edges in Southern Amazonia
Tropical forest fragmentation from agricultural expansion alters the microclimatic conditions of the remaining forests, with effects on vegetation structure and function. However, little is known about how the functional trait variability within and among tree species in fragmented landscapes influence and facilitate species’ persistence in these new environmental conditions. Here, we assessed potAuthorsLeonardo Maracahipes-Santos, Divino Vicente Silvério, Leandro Maracahipes, Marcia N. Macedo, Eddie Lenza, Kathi Jo Jankowski, Michelle Wong, Antônio Carlos Silveiro da Silva, Christopher Neill, Giselda Durigan, Paulo BrandoRiver geomorphology affects biogeochemical responses to hydrologic events in a large river ecosystem
Shifts in the frequency and intensity of high discharge events due to climate change may have important consequences for the hydrology and biogeochemistry of rivers. However, our understanding of event-scale biogeochemical dynamics in large rivers lags that of small streams. To fill this gap, we used high-frequency sensor data collected during four consecutive summers from a main channel and backwAuthorsTaryn Waite, Kathi Jo Jankowski, Denise Bruesewitz, Molly Van Appledorn, Megan Johnston, Jeffrey N. Houser, Douglas Baumann, Barbara BennieThe 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 to largeAuthorsAudrey Thellman, Kathi Jo Jankowski, Brian Hayden, Xiao Yang, Wayana Dolan, Adrianne P Smits, Antoin M O'SullivanWarmer 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 Mississippi RiveAuthorsKathi Jo Jankowski, Jeffrey N. Houser, Mark D. Schuerell, Adrianne P SmitsLand 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 not been welAuthorsKathi Jo Jankowski, Linda A. Deegan, Christopher Neill, HIllary L. Sullivan, Paulo Ilha, Leonardo Maracahipes-Santos, Nubia C.S. Marques, Marcia N. MacedoRiparian 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 riparianAuthorsNubia C.S. Marques, Kathi Jo Jankowski, Marcia N. Macedo, Leandro Juen, Ana Luiza-Andrade, Linda A. DeeganAquatic 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 apply funcAuthorsKathi Jo Jankowski, Francine H. Mejia, Joanna Blaszczak, Gordon W. HoltgrieveUsing 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 their irreAuthorsLauren K Borland, Collin J Mulcahy, Barb Bennie, Douglas D Baumann, Roger J. Haro, Molly Van Appledorn, Kathi Jo Jankowski, Aaron R. Cupp, Richard A. Erickson