Randy Kolka
Research Soil Scientist
1831 Highway 169 East
Grand Rapids, MN 55744-3399
United States
Grand Rapids, MN 55744-3399
United States
Phone
218-326-7115
0000-0002-6419-8218Featured Publications
- R. Kolka, K.M. Quigley, J. R. Miesel, M.B. Dickinson, B.R. Sturtevant, C.C. Kern. 2024. Influence of barrens restoration treatments on soil carbon, nitrogen, and mercury pools and emissions
- C. P. R. McCarter, S. Sebestyen, J. D. Jeremiason, E. A. Nater, R. Kolka. 2024. Methylmercury Export From a Headwater Peatland Catchment Decreased With Cleaner Emissions Despite Opposing Effect of Climate Warming
- Randall K. Kolka, Robert G. Haight, Chan Lan Chun, Matthew J. Berens, Elizabeth R. Rogers, Ryan A. Vinhal, Ronald S. Jr..Zalesny, Keith H. Nislow, Charles H. Perry, Stephanie J. Connolly. 2022. Mercury sulfur initiative: suggested program of research for the Upper Great Lakes States
- Caroline E. Pierce, Olha S. Furman, Sarah L. Nicholas, Jill Coleman Wasik, Caitlin M. Gionfriddo, Ann M. Wymore, Stephen D. Sebestyen, Randall K. Kolka, Carl P. J. Mitchell, Natalie A. Griffiths, Dwayne A. Elias, Edward A. Nater, Brandy M. Toner. 2022. Role of Ester Sulfate and Organic Disulfide in Mercury Methylation in Peatland Soils
- Rachel M. Wilson, Natalie A. Griffiths, Ate Visser, Karis J. McFarlane, Stephen D. Sebestyen, Keith C. Oleheiser, Samantha Bosman, Anya M. Hopple, Malak M. Tfaily, Randall K. Kolka, Paul J. Hanson, Joel E. Kostka, Scott D. Bridgham, Jason K. Keller, Jeffrey P. Chanton. 2021. Radiocarbon Analyses Quantify Peat Carbon Losses With Increasing Temperature in a Whole Ecosystem Warming Experiment
- Paul J. Hanson, Natalie A. Griffiths, Colleen M. Iversen, Richard J. Norby, Stephen D. Sebestyen, Jana R. Phillips, Jeffrey P. Chanton, Randall K. Kolka, Avni Malhotra, Keith C. Oleheiser, Jeffrey M. Warren, Xiaoying Shi, Xiaojuan Yang, Jiafu Mao, Daniel M. Ricciuto. 2020. Rapid Net Carbon Loss From a Whole‐Ecosystem Warmed Peatland
- Randall Kolka, Carl Trettin, Wenwu Tang, Ken W. Krauss, Sheel Bansal, Judith Z. Drexler, Kimberly P. Wickland, Rodney A. Chimner, Dianna M. Hogan, Emily J. Pindilli, Brian Benscoter, Brian A. Tangen, Evan S. Kane, Scott Bridgham, Curtis J. Richardson. 2018. Terrestrial wetlands
- Randall K. Kolka, Charlotte E. Riggs, Edward A. Nater, Trent R. Wickman, Emma L. Witt, Jason T. Butcher. 2019. Temporal fluctuations in young-of-the-year yellow perch mercury bioaccumulation in lakes of northeastern Minnesota
- Randall K. Kolka, Anthony W. D'Amato, Joseph W. Wagenbrenner, Robert A. Slesak, Thomas G. Pypker, Melissa B. Youngquist, Alexis R. Grinde, Brian J. Palik. 2018. Review of ecosystem level impacts of emerald ash borer on black ash wetlands: What does the future hold?
- Lisa A. Schulte, Jarad Niemi, Matthew J. Helmers, Matt Liebman, J. Gordon Arbuckle, David E. James, Randall K. Kolka, Matthew E. O’Neal, Mark D. Tomer, John C. Tyndall, Heidi Asbjornsen, Pauline Drobney, Jeri Neal, Gary Van Ryswyk, Chris Witte. 2017. Prairie strips improve biodiversity and the delivery of multiple ecosystem services from corn–soybean croplands
Other Publications
- E.J. Henning, R.K. Kolka, M.J. Helmers. 2024. Infiltration within native prairie vegetative strips embedded in row crop fields across Iowa
- Randy Kolka, Caroline Pierce, Isabella Garrioch, Kevin Behrens, Brandy M. Toner. 2024. Review of the Influence of Climate Change on the Hydrologic Cycling and Gaseous Fluxes of Mercury in Boreal Peatlands: Implications for Restoration
- P. Benalcazar, R. Kolka, A. C. Diochon, R. R. Schindelbeck, T. Sahota, B. E. McLaren, John Stanovick. 2024. Predictive soil health indicators across a boreal forest to agricultural conversion gradient
- Paul Benalcazar, Brent Seuradge, Amanda C. Diochon, Randall K. Kolka, Lori A. Phillips. 2024. Conversion of boreal forests to agricultural systems: soil microbial responses along a land-conversion chronosequence
- Chetwynd Osborne, Spencer Gilbert-Parkes, Graeme Spiers, Louis James Lamit, Erik A. Lilleskov, Nathan Basiliko, Shaun Watmough, Roxanne Andersen, Rebekka E. Artz, Brian W. Benscoter, Luca Bragazza, Suzanna L. Bräuer, Michael A. Carson, Xin Chen, Rodney A. Chimner, Bev R. Clarkson, Andrea S. Enriquez, Samantha P. Grover, Lorna I Harris, Christina Hazard, John Hribljan, Sari Juutinen, Evan S. Kane, Klaus-Holger Knorr, Randy Kolka, Anna M. Laine, Tuula Larmola, Carmody K. McCalley, Jim McLaughlin, Tim R. Moore, Nadia Mykytczuk, Anna E. Normand, David Olefeldt, Virginia Rich, Nigel Roulet, Danielle L. Rupp, Jasmine Rutherford, Christopher W. Schadt, Oliver Sonnentag, Leho Tedersoo, Carl C. Trettin, Eeva-Stiina Tuittila, Merritt Turetsky, Zuzana Urbanová, Ruth K. Varner, Mark P. Waldrop, Meng Wang, Zheng Wang, Magdalena M. Wiedermann, Shanay T. Williams, Joseph B. Yavitt, Zhi-Guo Yu. 2024. Global Patterns of Metal and Other Element Enrichment in Bog and Fen Peatlands
- Julia E. M. Stuart, Colin L. Tucker, Erik Lilleskov, Randall Kolka, Rodney A. Chimner, Katherine A. Heckman, Evan S. Kane. 2023. Evidence for older carbon loss with lowered water tables and changing plant functional groups in peatlands
- Fenghui Yuan, Daniel M. Ricciuto, Xiaofeng Xu, Daniel T. Roman, Erik Lilleskov, Jeffrey D. Wood, Hinsby Cadillo-Quiroz, Angela Lafuente, Jhon Rengifo, Randall Kolka, Lizardo Fachin, Craig Wayson, Kristell Hergoualc'h, Rodney A. Chimner, Alexander Frie, Timothy J. Griffis. 2023. Evaluation and improvement of the E3SM land model for simulating energy and carbon fluxes in an Amazonian peatland
- E. Anu Wille, Christian F. Lenhart, Randall Kolka. 2023. Carbon dioxide emissions in relation to water table in a restored fen
- Gavin McNicol, Etienne Fluet‐Chouinard, Zutao Ouyang, Sara Knox, Zhen Zhang, Tuula Aalto, Sheel Bansal, Kuang‐Yu Chang, Min Chen, Kyle Delwiche, Sarah Feron, Mathias Goeckede, Jinxun Liu, Avni Malhotra, Joe R. Melton, William Riley, Rodrigo Vargas, Kunxiaojia Yuan, Qing Ying, Qing Zhu, Pavel Alekseychik, Mika Aurela, David P. Billesbach, David I Campbell, Jiquan Chen, Housen Chu, Ankur R. Desai, Eugenie Euskirchen, Jordan Goodrich, Timothy Griffis, Manuel Helbig, Takashi Hirano, Hiroki Iwata, Gerald Jurasinski, John King, Franziska Koebsch, Randall Kolka, Ken Krauss, Annalea Lohila, Ivan Mammarella, Mats Nilson, Asko Noormets, Walter Oechel, Matthias Peichl, Torsten Sachs, Ayaka Sakabe, Christopher Schulze, Oliver Sonnentag, Ryan C. Sullivan, Eeva‐Stiina Tuittila, Masahito Ueyama, Timo Vesala, Eric Ward, Christian Wille, Guan Xhuan Wong, Donatella Zona, Lisamarie Windham‐Myers, Benjamin Poulter, Robert B. Jackson. 2023. Upscaling Wetland Methane Emissions From the FLUXNET‐CH4 Eddy Covariance Network (UpCH4 v1.0): Model Development, Network Assessment, and Budget Comparison
- Kenton L. Sena, Jerrica K. Flynn, Wendy Leuenberger, Randall Kolka, Christopher D. Barton. 2023. Long-term changes in coarse woody debris abundance in three Appalachian headwater streams with differing best management practices
- Spencer W. Roth, Natalie A. Griffiths, Randall Kolka, Keith C. Oleheiser, Alyssa A. Carrell, Dawn M. Klingeman, Angela Seibert, Jeffrey P. Chanton, Paul J. Hanson, Christopher W. Schadt, Emily B. Graham. 2023. Elevated temperature alters microbial communities, but not decomposition rates, during 3 years of in situ peat decomposition
- Carlos Barreto, Pedro Henrique Silva Conceição, Estevam Cipriano Araujo de Lima, Luís Carlos Stievano, Douglas Zeppelini, Randall K. Kolka, Paul J. Hanson, Zoë Lindo. 2023. Large-scale experimental warming reduces soil faunal biodiversity through peatland drying
- Ethan D. Pawlowski, Diana L. Karwan, Randall K. Kolka. 2023. Assessing nutrient and sediment load reduction potential of vegetation by utilizing the nutrient tracking tool at the field and watershed scale in a Great Lakes priority watershed
- Sarah J. Shelley, Deanne J. Brice, Colleen M. Iversen, Randy K. Kolka, Stephen D. Sebestyen, Natalie A. Griffiths. 2022. Deciphering the shifting role of intrinsic and extrinsic drivers on moss decomposition in peatlands over a 5‐year period
- Randy Kolka, Carl Trettin, Lisamarie Windham-Myers. 2022. The importance of wetland carbon dynamics to society: insight from the second state of the carbon cycle science report
- Joseph Shannon, Fengjing Liu, Matthew Van Grinsven, Randall Kolka, Thomas Pypker. 2022. Magnitude, consequences and correction of temperature‐derived errors for absolute pressure transducers under common monitoring scenarios
- Brittany A. Verbeke, Louis J. Lamit, Erik A. Lilleskov, Suzanne B. Hodgkins, Nathan Basiliko, Evan S. Kane, Roxane Andersen, Rebekka R. E. Artz, Juan C. Benavides, Brian W. Benscoter, Werner Borken, Luca Bragazza, Stefani M. Brandt, Suzanna L. Bräuer, Michael A. Carson, Dan Charman, Xin Chen, Beverley R. Clarkson, Alexander R. Cobb, Peter Convey, Jhon del Águila Pasquel, Andrea S. Enriquez, Howard Griffiths, Samantha P. Grover, Charles F. Harvey, Lorna I Harris, Christina Hazard, Dominic Hodgson, Alison M. Hoyt, John Hribljan, Jyrki Jauhiainen, Sari Juutinen, Klaus‐Holger Knorr, Randall K. Kolka, Mari Könönen, Tuula Larmola, Carmody K. McCalley, James McLaughlin, Tim R. Moore, Nadia Mykytczuk, Anna E. Normand, Virginia Rich, Nigel Roulet, Jessica Royles, Jasmine Rutherford, David S. Smith, Mette M. Svenning, Leho Tedersoo, Pham Q. Thu, Carl C. Trettin, Eeva‐Stiina Tuittila, Zuzana Urbanová, Ruth K. Varner, Meng Wang, Zheng Wang, Matt Warren, Magdalena M. Wiedermann, Shanay Williams, Joseph B. Yavitt, Zhi‐Guo Yu, Zicheng Yu, Jeffrey P. Chanton. 2022. Latitude, elevation, and mean annual temperature predict peat organic matter chemistry at a global scale
- Kathryn L. Hofmeister, Sue L. Eggert, Brian J. Palik, David Morley, Emily Creighton, Marty Rye, Randall K. Kolka. 2022. The Identification, Mapping, and Management of Seasonal Ponds in Forests of the Great Lakes Region
- Colin P. R. McCarter, Susan L. Eggert, Stephen D. Sebestyen, Randall K. Kolka, Carl P. J. Mitchell. 2022. Effects of Clearcutting and Residual Biomass Harvesting on Hillslope Mercury Mobilization and Downgradient Mercury Accumulation
- Hesti L. Tata, Hani S. Nuroniah, Diandra A. Ahsania, Haning Anggunira, Siti N. Hidayati, Meydina Pratama, Istomo Istomo, Rodney A. Chimner, Meine van Noordwijk, Randall Kolka. 2022. Flooding tolerance of four tropical peatland tree species in a nursery trial
- Joseph Shannon, Randall Kolka, Matthew Van Grinsven, Fengjing Liu. 2022. Joint impacts of future climate conditions and invasive species on black ash forested wetlands
- Anna B. Stockstad, Robert A. Slesak, Alan J. Toczydlowski, Charles R. Blinn, Randall K. Kolka, Stephen D. Sebestyen. 2022. Limited effects of precipitation manipulation on soil respiration and inorganic N concentrations across soil drainage classes in northern Minnesota aspen forests
- Anna B. Stockstad, Robert A. Slesak, Alan J. Toczydlowski, Charles R. Blinn, Randall K. Kolka, Stephen D. Sebestyen. 2022. The effects of combined throughfall reduction and snow removal on soil physical properties across a drainage gradient in aspen forests of northern Minnesota, USA
- M. Helbig, T. Živković, P. Alekseychik, M. Aurela, T. S. El-Madany, E. S. Euskirchen, L. B. Flanagan, T. J. Griffis, P. J. Hanson, J. Hattakka, C. Helfter, T. Hirano, E. R. Humphreys, G. Kiely, R. Kolka, T. Laurila, P. G. Leahy, A. Lohila, I. Mammarella, M. B. Nilsson, A. Panov, F. J. W. Parmentier, M. Peichl, J. Rinne, D. Roman, O. Sonnentag, E.-S Tuittila, M. Ueyama, T. Vesala, P. Vestin, S. Weldon, P. Weslien, S. Zaehle. 2022. Warming response of peatland CO2 sink is sensitive to seasonality in warming trends
- P. Benalcazar, A.C. Diochon, R. Kolka, R.R. Schindelbeck, T. Sahota, B.E. McLaren. 2022. The impact of land conversion from boreal forest to agriculture on soil health indicators
- Colin P. R. McCarter, Stephen Sebestyen, Jill K. Coleman Wasik, Daniel R. Engstrom, Randall K. Kolka, Jeff D. Jeremiason, Edward B. Swain, Bruce A. Monson, Brian A. Branfireun, Steven J. Balogh, Edward A. Nater, Susan L. Eggert, Paris Ning, Carl P. J. Mitchell. 2022. Long-Term Experimental Manipulation of Atmospheric Sulfate Deposition to a Peatland: Response of Methylmercury and Related Solute Export in Streamwater
- Shaun Watmough, Spencer Gilbert-Parkes, Nathan Basiliko, Louis J. Lamit, Erik A. Lilleskov, Roxanne Andersen, Jhon del Aguila-Pasquel, Rebekka E. Artz, Brian W. Benscoter, Werner Borken, Luca Bragazza, Stefani M. Brandt, Suzanna L. Bräuer, Michael A. Carson, Xin Chen, Rodney A. Chimner, Bev R. Clarkson, Alexander R. Cobb, Andrea S. Enriquez, Jenny Farmer, Samantha P. Grover, Charles F. Harvey, Lorna I Harris, Christina Hazard, Alison M. Hoyt, John Hribljan, Jyrki Jauhiainen, Sari Juutinen, Evan S. Kane, Klaus-Holger Knorr, Randy Kolka, Mari Könönen, Anna M. Laine, Tuula Larmola, Patrick A. Levasseur, Carmody K. McCalley, Jim McLaughlin, Tim R. Moore, Nadia Mykytczuk, Anna E. Normand, Virginia Rich, Bryce Robinson, Danielle L. Rupp, Jasmine Rutherford, Christopher W. Schadt, Dave S. Smith, Graeme Spiers, Leho Tedersoo, Pham Q. Thu, Carl C. Trettin, Eeva-Stiina Tuittila, Merritt Turetsky, Zuzana Urbanová, Ruth K. Varner, Mark P. Waldrop, Meng Wang, Zheng Wang, Matt Warren, Magdalena M. Wiedermann, Shanay T. Williams, Joseph B. Yavitt, Zhi-Guo Yu, Geoff Zahn. 2022. Variation in carbon and nitrogen concentrations among peatland categories at the global scale
- Robert Richard, Evan Kane, Dustin Bronson, Randall Kolka. 2022. Whole-Tree Harvest Effects on Macronutrients in an Oak-Dominated System after Seven Years
- M Julian Deventer, Tyler Roman, Ivan Bogoev, Randall K. Kolka, Matt Erickson, Xuhui Lee, John M. Baker, Dylan B. Millet, Timothy J. Griffis. 2021. Biases in open-path carbon dioxide flux measurements: Roles of instrument surface heat exchange and analyzer temperature sensitivity
- Kathleen M. Quigley, Randall Kolka, Brian R. Sturtevant, Matthew B. Dickinson, Christel C. Kern, Jessica R. Miesel. 2021. Restoring open canopy pine barrens from the ground up: Repeated burns correspond with increased soil hydraulic conductivity
- Xueying Yu, Dylan B. Millet, Kelley C. Wells, Daven K. Henze, Hansen Cao, Timothy J. Griffis, Eric A. Kort, Genevieve Plant, Malte J. Deventer, Randall K. Kolka, D. Tyler Roman, Kenneth J. Davis, Ankur R. Desai, Bianca C. Baier, Kathryn McKain, Alan C. Czarnetzki, A. Anthony. Bloom. 2021. Aircraft-based inversions quantify the importance of wetlands and livestock for Upper Midwest methane emissions
- Hannah C. Friesen, Robert A. Slesak, Diana L. Karwan, Randall K. Kolka. 2021. Effects of snow and climate on soil temperature and frost development in forested peatlands in Minnesota, USA
- Stephen D. Sebestyen, Nina K. Lany, Daniel Tyler Roman, Jacob M. Burdick, Richard L. Kyllander, Elon Sandy Verry, Randall K. Kolka. 2021. Hydrological and meteorological data from research catchments at the Marcell Experimental Forest, Minnesota, USA
- Colin P. R. McCarter, Stephen D. Sebestyen, Susan L. Eggert, Randall K. Kolka, Carl P. J. Mitchell. 2021. Differential subsurface mobilization of ambient mercury and isotopically enriched mercury tracers in a harvested and residue harvested hardwood forest in northern Minnesota
- Anna Stockstad, Ella Gray, Stephen Sebestyen, Nina Lany, Randall Kolka, Marcella Windmuller-Campione. 2021. Analyzing Trends in Water Table Elevations at the Marcell Experimental Forest, Minnesota, U.S.A.
- Rachel M. Wilson, Malak M. Tfaily, Max Kolton, Eric R. Johnston, Caitlin Petro, Cassandra A. Zalman, Paul J. Hanson, Heino M. Heyman, Jennifer E. Kyle, David W. Hoyt, Elizabeth K. Eder, Samuel O. Purvine, Randall K. Kolka, Stephen D. Sebestyen, Natalie A. Griffiths, Christopher W. Schadt, Jason K. Keller, Scott D. Bridgham, Jeffrey P. Chanton, Joel E. Kostka. 2021. Soil metabolome response to whole-ecosystem warming at the Spruce and Peatland Responses under Changing Environments experiment
- Liam Krause, Kevin J. McCullough, Evan S. Kane, Randall K. Kolka, Rodney A. Chimner, Erik A. Lilleskov. 2021. Impacts of historical ditching on peat volume and carbon in northern Minnesota USA peatlands
- Verity G. Salmon, Deanne J. Brice, Scott Bridgham, Joanne Childs, Jake Graham, Natalie A. Griffiths, Kirsten Hofmockel, Colleen M. Iversen, Terri M. Jicha, Randy K. Kolka, Joel E. Kostka, Avni Malhotra, Richard J. Norby, Jana R. Phillips, Daniel Ricciuto, Christopher W. Schadt, Stephen D. Sebestyen, Xiaoying Shi, Anthony P. Walker, Jeffrey M. Warren, David J. Weston, Xiaojuan Yang, Paul J. Hanson. 2021. Nitrogen and phosphorus cycling in an ombrotrophic peatland: a benchmark for assessing change
- Daniel M. Ricciuto, Xiaofeng Xu, Xiaoying Shi, Yihui Wang, Xia Song, Christopher W. Schadt, Natalie A. Griffiths, Jiafu Mao, Jeffrey M. Warren, Peter E. Thornton, Jeff Chanton, Jason K. Keller, Scott D. Bridgham, Jessica Gutknecht, Stephen D. Sebestyen, Adrien Finzi, Randall Kolka, Paul J. Hanson. 2021. An Integrative Model for Soil Biogeochemistry and Methane Processes: I. Model Structure and Sensitivity Analysis
- Sergio Miguel López-Ramírez, Alex Mayer, Leonardo Sáenz, Lyssette Elena Muñoz-Villers, Friso Holwerda, Nathaniel Looker, Christoph Schürz, Z. Carter Berry, Robert Manson, Heidi Asbjornsen, Randall Kolka, Daniel Geissert, Carlos Lezama. 2021. A comprehensive calibration and validation of SWAT-T using local datasets, evapotranspiration and streamflow in a tropical montane cloud forest area with permeable substrate in central Veracruz, Mexico
- François Maillard, Christopher W. Fernandez, Sunil Mundra, Kate Heckman, Randy Kolka, Håvard Kauserud, Peter G. Kennedy. 2021. Warming drives a 'hummockification' of microbial communities associated with decomposing mycorrhizal fungal necromass in peatlands
- Louis J. Lamit, Karl J. Romanowicz, Lynette R. Potvin, Jay T. Lennon, Susannah G. Tringe, Rodney A. Chimner, Randall K. Kolka, Evan S. Kane, Erik A. Lilleskov. 2021. Peatland microbial community responses to plant functional group and drought are depth‐dependent
- Robert P. Richard, Evan S. Kane, Dustin R. Bronson, Randall K. Kolka. 2021. Long-Term Ecosystem Nutrient Pool Status for Aspen Forest Harvest Simulations on Glacial Till and Sandy Outwash Soils
- Sue L. Eggert, Steven A. Heiskary, Randy K. Kolka, Brian H. Hill, Bruce A. Monson, Edward B. Swain. 2021. Chapter 2: Ecoregion 5.2.1 Northern lakes and forests: Marcell Experimental Forest, Minnesota
- Robert P. Richard, Evan S. Kane, Dustin R. Bronson, Ann L. Maclean, Randall K. Kolka. 2021. Plant communities and landform relationships delineate the components of soil complexes subject to whole‐tree harvest restriction
- Colin P. R. McCarter, Stephen D. Sebestyen, Susan L. Eggert, Randall K. Kolka, Carl P. J. Mitchell. 2020. Changes in hillslope hydrology in a perched, shallow soil system due to clearcutting and residual biomass removal
- Carl C. Trettin, Randall K. Kolka, Anne S. Marsh, Sheel Bansal, Erik A. Lilleskov, Patrick Megonigal, Marla J. Stelk, Graeme Lockaby, David V D'Amore, Richard A. MacKenzie, Brian Tangen, Rodney Chimner, James Gries. 2020. Wetland and hydric soils
- Mara McPartland, Rebecca Montgomery, Paul Hanson, Jana Phillips, Randy Kolka, Brian Palik. 2020. Vascular plant species response to warming and elevated carbon dioxide in a boreal peatland
- Jennie I Sirota, Randall K. Kolka, Stephen D. Sebestyen, Edward A. Nater. 2020. Mercury dynamics in the pore water of peat columns during experimental freezing and thawing
- Alan J.Z. Toczydlowski, Robert A. Slesak, Randall K. Kolka, Rodney T. Venterea. 2020. Temperature and water-level effects on greenhouse gas fluxes from black ash (Fraxinus nigra) wetland soils in the Upper Great Lakes region, USA
- Kathleen M. Quigley, Randall Kolka, Brian R. Sturtevant, Matthew B. Dickinson, Christel C. Kern, Deahn M. Donner, Jessica R. Miesel. 2020. Prescribed burn frequency, vegetation cover, and management legacies influence soil fertility: Implications for restoration of imperiled pine barrens habitat
- Alan J.Z. Toczydlowski, Robert A. Slesak, Randall K. Kolka, Rodney T. Venterea, Anthony W. D'Amato, Brian J. Palik. 2020. Effect of simulated emerald ash borer infestation on nitrogen cycling in black ash (Fraxinus nigra) wetlands in northern Minnesota, USA
- Emily A. Altrichter, Catherine M. Mabry, Janette R. Thompson, Randall K. Kolka. 2020. Genetic Differentiation and Phenotypic Plasticity of Forest Herbaceous Species in Iowa, Central United States
- Xue Feng, M. Julian Deventer, Rachel Lonchar, G. H. Crystal Ng, Stephen D. Sebestyen, D. Tyler Roman, Timothy J. Griffis, Dylan B. Millet, Randall K. Kolka. 2020. Climate Sensitivity of Peatland Methane Emissions Mediated by Seasonal Hydrologic Dynamics
- T.J. Griffis, D.T. Roman, J.D. Wood, J. Deventer, L. Fachin, J. Rengifo, D. Del Castillo, E. Lilleskov, R. Kolka, R.A. Chimner, J. del Aguila-Pasquel, C. Wayson, K. Hergoualc'h, J.M. Baker, H. Cadillo-Quiroz, D.M. Ricciuto. 2020. Hydrometeorological sensitivities of net ecosystem carbon dioxide and methane exchange of an Amazonian palm swamp peatland
- Z. Carter Berry, Kelly W. Jones, Leon Rodrigo Gomez Aguilar, Russell G. Congalton, Friso Holwerda, Randall Kolka, Nathaniel Looker, Sergio Miguel Lopez Ramirez, Robert Manson, Alex Mayer, Lyssette Muñoz-Villers, Perla Ortiz Colin, Humberto Romero-Uribe, Leonardo Saenz, Juan Jose Von Thaden, Mariana Quetzalli Vizcaíno Bravo, Guadalupe Williams-Linera, Heidi Asbjornsen. 2020. Evaluating ecosystem service trade-offs along a land-use intensification gradient in central Veracruz, Mexico
- Erik Lilleskov, Kevin McCullough, Kristell Hergoualc’h, Dennis del Castillo Torres, Rodney Chimner, Daniel Murdiyarso, Randy Kolka, Laura Bourgeau-Chavez, John Hribljan, Jhon del Aguila Pasquel, Craig Wayson. 2019. Is Indonesian peatland loss a cautionary tale for Peru? A two-country comparison of the magnitude and causes of tropical peatland degradation
- Nam Jin Noh, Joseph P. Shannon, Nicholas W. Bolton, Joshua C. Davis, Matthew J. Van Grinsven, Thomas G. Pypker, Randall K. Kolka, Joseph W. Wagenbrenner. 2019. Temperature responses of carbon dioxide fluxes from coarse dead wood in a black ash wetland
- Mara Y. McPartland, Evan S. Kane, Michael J. Falkowski, Randy Kolka, Merritt R. Turetsky, Brian Palik, Rebecca A. Montgomery. 2019. The response of boreal peatland community composition and NDVI to hydrologic change, warming and elevated carbon dioxide
- Christopher W. Fernandez, Katherine Heckman, Randall Kolka, Peter G. Kennedy. 2019. Melanin mitigates the accelerated decay of mycorrhizal necromass with peatland warming
- Daniel Murdiyarso, Erik Lilleskov, Randy Kolka. 2019. Tropical peatlands under siege: the need for evidence-based policies and strategies
- K.M. Quigley, R.E. Wildt, B.R. Sturtevant, R.K. Kolka, M.B. Dickinson, C.C. Kern, D.M. Donner, J.R. Miesel. 2019. Fuels, vegetation, and prescribed fire dynamics influence ash production and characteristics in a diverse landscape under active pine barrens restoration
- Erin C. Pischke, Z. Carter Berry, Randall K. Kolka, Jacob Salcone, Diana Córdoba, Xoco Shinbrot, Sergio Miguel López Ramirez, Kelly W. Jones, Russell G. Congalton, Robert H. Manson, Juan José Von Thaden Ugalde, Theresa Selfa, V. Sophie Avila Foucat, Heidi Asbjornsen. 2019. Lessons learned about collaborating across coupled human-natural systems research on Mexico's Payments for Hydrological Services Program
- Kristine M. Haynes, Evan S. Kane, Lynette Potvin, Erik A. Lilleskov, Randall K. Kolka, Carl P.J. Mitchell. 2019. Impacts of experimental alteration of water table regime and vascular plant community composition on peat mercury profiles and methylmercury production
- Mara McPartland, Michael Falkowski, Jason Reinhardt, Evan Kane, Randy Kolka, Merritt Turetsky, Thomas Douglas, John Anderson, Jarrod Edwards, Brian Palik, Rebecca Montgomery. 2019. Characterizing Boreal Peatland Plant Composition and Species Diversity with Hyperspectral Remote Sensing
- S.F. Dymond, A.W. D'Amato, R.K. Kolka, P.V. Bolstad, S.D. Sebestyen, K. Gill, M.T. Curzon. 2019. Climatic controls on peatland black spruce growth in relation to water table variation and precipitation
- M. Julian Deventer, Timothy J. Griffis, D. Tyler Roman, Randall K. Kolka, Jeffrey D. Wood, Matt Erickson, John M. Baker, Dylan B. Millet. 2019. Error characterization of methane fluxes and budgets derived from a long-term comparison of open- and closed-path eddy covariance systems
- Tera E. Lewandowski, Jodi A. Forrester, David J. Mladenoff, Erika Marin-Spiotta, Anthony W. D'Amato, Brian J. Palik, Randall K. Kolka. 2019. Long term effects of intensive biomass harvesting and compaction on the forest soil ecosystem
- Mikayla J. Boche, Thomas M. DeSutter, Randall K. Kolka. 2019. Factors Affecting Soil Total Mercury in Seasonal Pond Basins within a Northern Hardwood Forest in Minnesota, USA
- Joshua C. Davis, Joseph P. Shannon, Matthew J. Van Grinsven, Nicholas W. Bolton, Joseph W. Wagenbrenner, Randall K. Kolka, Thomas G. Pypker. 2019. Nitrogen cycling responses to simulated emerald ash borer infestation in Fraxinus nigra-dominated wetlands
- E. S. Kane, T. J. Veverica, M. M. Tfaily, E. A. Lilleskov, K. M. Meingast, R. K. Kolka, A. L. Daniels, R. A. Chimner. 2019. Reduction‐Oxidation Potential and Dissolved Organic Matter Composition in Northern Peat Soil: Interactive Controls of Water Table Position and Plant Functional Groups
- Colleen M. Iversen, Joanne Childs, Richard J. Norby, Todd A. Ontl, Randall K. Kolka, Deanne J. Brice, Karis J. McFarlane, Paul J. Hanson. 2018. Fine-root growth in a forested bog is seasonally dynamic, but shallowly distributed in nutrient-poor peat
- Glenn E. Woerndle, Martin Tsz-Ki Tsui, Stephen D. Sebestyen, Joel D. Blum, Xiangping Nie, Randall K. Kolka. 2018. New Insights on Ecosystem Mercury Cycling Revealed by Stable Isotopes of Mercury in Water Flowing from a Headwater Peatland Catchment
- Zichong Chen, Timothy J. Griffis, John M. Baker, Dylan B. Millet, Jeffrey D. Wood, Edward J. Dlugokencky, Arlyn E. Andrews, Colm Sweeney, Cheng Hu, Randall K. Kolka. 2018. Source partitioning of methane emissions and its seasonality in the U.S. Midwest
- Joseph Shannon, Matthew Van Grinsven, Joshua Davis, Nicholas Bolton, Nam Noh, Thomas Pypker, Randall Kolka. 2018. Water Level Controls on Sap Flux of Canopy Species in Black Ash Wetlands
- Nicholas Bolton, Joseph Shannon, Joshua Davis, Matthew Grinsven, Nam Noh, Shon Schooler, Randall Kolka, Thomas Pypker, Joseph Wagenbrenner. 2018. Methods to Improve Survival and Growth of Planted Alternative Species Seedlings in Black Ash Ecosystems Threatened by Emerald Ash Borer
- J. R. Corman, B. L. Bertolet, N. J. Casson, S. D. Sebestyen, R. K. Kolka, E. H. Stanley. 2018. Nitrogen and Phosphorus Loads to Temperate Seepage Lakes Associated With Allochthonous Dissolved Organic Carbon Loads
- Matthew Van Grinsven, Joseph Shannon, Nicholas Bolton, Joshua Davis, Nam Noh, Joseph Wagenbrenner, Randall Kolka, Thomas Pypker. 2018. Response of black ash wetland gaseous soil carbon fluxes to a simulated emerald ash borer infestation
- Jessica R. Miesel, Randy Kolka, Phil Townsend. 2018. Chapter 10 - Wildfire and fire severity effects on post-fire carbon and nitrogen cycling in forest soil (Project NC-EM-F-14-1)
- Brittni L. Bertolet, Jessica R. Corman, Nora J. Casson, Stephen D. Sebestyen, Randy K. Kolka, Emily H. Stanley. 2018. Influence of soil temperature and moisture on the dissolved carbon, nitrogen, and phosphorus in organic matter entering lake ecosystems
- Randall Kolka, Carl Trettin, Wenwu Tang, Ken Krauss, Sheel Bansal, Judith Drexler, Kimberly Wickland, Rodney Chimner, Diana Hogan, Emily J. Pindilli, Brian Benscoter, Brian Tangen, Evan Kane, Scott Bridgham, Curtis Richardson. 2018. Terrestrial wetlands
- Kristine M. Haynes, Evan S. Kane, Lynette Potvin, Erik A. Lilleskov, Randall K. Kolka, Carl P.J. Mitchell. 2017. Gaseous mercury fluxes in peatlands and the potential influence of climate change
- Kristine M. Haynes, Evan S. Kane, Lynette Potvin, Erik A. Lilleskov, Randall K. Kolka, Carl P. J. Mitchell. 2017. Mobility and transport of mercury and methylmercury in peat as a function of changes in water table regime and plant functional groups
- Xavier Comas, Neil Terry, John A. Hribljan, Erik A. Lilleskov, Esteban Suarez, Rodney A. Chimner, Randy K. Kolka. 2017. Estimating belowground carbon stocks in peatlands of the Ecuadorian páramo using ground-penetrating radar (GPR)
- Randall K. Kolka, Brian R. Sturtevant, Jessica R. Miesel, Aditya Singh, Peter T. Wolter, Shawn Fraver, Thomas M. DeSutter, Phil A. Townsend. 2017. Emissions of forest floor and mineral soil carbon, nitrogen and mercury pools and relationships with fire severity for the Pagami Creek Fire in the Boreal Forest of northern Minnesota
- Usman Anwar, Lisa A. Schulte, Matthew Helmers, Randall K. Kolka. 2017. The Effect of Five Biomass Cropping Systems on Soil-Saturated Hydraulic Conductivity Across a Topographic Gradient
- Charlotte E. Riggs, Randall K. Kolka, Edward A. Nater, Emma L. Witt, Trent R. Wickman, Laurel G. Woodruff, Jason T. Butcher. 2017. Yellow perch (Perca flavescens) mercury unaffected by wildland fires in northern Minnesota
- A. Timm, D. Higgins, J. Stanovick, R. Kolka, S. Eggert. 2017. Quantifying fish habitat associated with stream simulation design culverts in northern Wisconsin
- Matthew J. Van Grinsven, Joseph P. Shannon, Joshua C. Davis, Nicholas W. Bolton, Joseph W. Wagenbrenner, Randall K. Kolka, Thomas Grant Pypker. 2017. Source water contributions and hydrologic responses to simulated emerald ash borer infestations in depressional black ash wetlands
- J. C. Olson, A. M. Marcarelli, A.L. Timm, S.L. Eggert, R.K. Kolka. 2017. Evaluating the Effects of Culvert Designs on Ecosystem Processes in Northern Wisconsin Streams
- Trevor Hobbs, Jason Lynch, Randy Kolka. 2017. Site-specific critical acid load estimates for forest soils in the Osborn Creek watershed, Michigan
- Joshua C. Davis, Joseph P. Shannon, Nicholas W. Bolton, Randall K. Kolka, Thomas G. Pypker. 2017. Vegetation responses to simulated emerald ash borer infestation in Fraxinus nigra dominated wetlands of Upper Michigan, USA
- Matthew Warren, Kristell Hergoualc'h, J. Boone Kauffman, Daniel Murdiyarso, Randall Kolka. 2017. An appraisal of Indonesia's immense peat carbon stock using national peatland maps: uncertainties and potential losses from conversion
- Salli F. Dymond, John B. Bradford, Paul V. Bolstad, Randall K. Kolka, Stephen D. Sebestyen, Thomas M. DeSutter. 2017. Topographic, edaphic, and vegetative controls on plant-available water
- Matthew Powers, Randall Kolka, John Bradford, Brian Palik, Martin Jurgensen. 2017. Forest floor and mineral soil respiration rates in a northern Minnesota red pine chronosequence
- Randy Kolka, Scott D. Bridgham, Chien-Lu Ping. 2016. Soils of peatlands: histosols and gelisols
- Emma L. Witt, Christopher D. Barton, Jeffrey W. Stringer, Randy Kolka, Mac A. Cherry. 2016. Influence of Variable Streamside Management Zone Configurations on Water Quality after Forest Harvest
- Joshua J. Puhlick, Shawn Fraver, Ivan J. Fernandez, Aaron R. Weiskittel, Laura S. Kenefic, Randy Kolka, Marie-Cecile Gruselle. 2016. Factors influencing organic-horizon carbon pools in mixed-species stands of central Maine, USA
- Brian H. Hill, Terri M. Jicha, LaRae L.P. Lehto, Colleen M. Elonen, Stephen D. Sebestyen, Randy Kolka. 2016. Comparisons of soil nitrogen mass balances for an ombrotrophic bog and a minerotrophic fen in northern Minnesota
- Anne Timm, Eric Hallerman, Andy Dolloff, Mark Hudy, Randall Kolka. 2016. Identification of a barrier height threshold where brook trout population genetic diversity, differentiation, and relatedness are affected
- Randy Kolka, Carl Mitchell, Ed Nater. 2016. Watershed cycling of mercury and controls on methylmercury production in Northern Minnesota landscapes
- Stephen Sebestyen, Randy Kolka. 2016. Thirty-year results from a paired-catchment study of upland flowpath responses to forest cover conversion in northern Minnesota
- Randy Kolka, D. Murdiyarso, J. B. Kauffman, Richard Birdsey. 2016. Tropical wetlands, climate, and land-use change: adaptation and mitigation opportunities
- Sona Psarska, Edward A. Nater, Randy Kolka. 2016. Impacts of invasive earthworms on soil mercury cycling: Two mass balance approaches to an earthworm invasion in a northern Minnesota forest
- Joshua Adkins, Christopher Barton, Scott Grubbs, Jeffrey Stringer, Randy Kolka. 2016. Assessment of streamside management zones for conserving benthic macroinvertebrate communities following timber harvest in eastern Kentucky headwater catchments
- Dong-Gill Kim, Habitamu Taddese, Abrham Belay, Randy Kolka. 2016. The impact of traditional fire management on soil carbon and nitrogen pools in a montane forest, southern Ethiopia
- P. J. Hanson, A. L. Gill, X. Xu, J. R. Phillips, D. J. Weston, Randy Kolka, J. S. Riggs, L. A. Hook. 2016. Intermediate-scale community-level flux of CO2 and CH4 in a Minnesota peatland: putting the SPRUCE project in a global context
- S.F. Dymond, A.W. D'Amato, Randy Kolka, P.V. Bolstad, Stephen Sebestyen, J.B. Bradford. 2016. Growth-climate relationships across topographic gradients in the northern Great Lakes
- R. M. Wilson, A. M. Hopple, M. M. Tfaily, S. D. Sebestyen, C. W. Schadt, L. Pfeifer-Meister, C. Medvedeff, K. J. McFarlane, J. E. Kostka, M. Kolton, R.K. Kolka, L. A. Kluber, J. K. Keller, T. P. Guilderson, N. A. Griffiths, J. P. Chanton, S. D. Bridgham, P. J. Hanson. 2016. Stability of peatland carbon to rising temperatures
- Joshua J. Puhlick, Aaron R. Weiskittel, Ivan J. Fernandez, Shawn Fraver, Laura S. Kenefic, Robert S. Seymour, Randall K. Kolka, Lindsey E. Rustad, John C. Brissette. 2016. Long-term influence of alternative forest management treatments on total ecosystem and wood product carbon storage
- Michaeleen Gerken Golay, Janette Thompson, Randall Kolka, Kris Verheyen. 2016. Carbon, nitrogen and phosphorus storage across a growing season by the herbaceous layer in urban and preserved temperate hardwood forests
- Jessica R. Miesel, Randall K. Kolka, Philip A. Townsend, William C. Hockaday. 2015. Fire severity effects on soil organic matter in northern Minnesota, USA
- Brian J. Palik, Brooke K. Haworth, Andrew J. David, Randall K. Kolka. 2015. Survival and growth of northern white-cedar and balsam fir seedlings in riparian management zones in northern Minnesota, USA
- Ankur R. Desai, Ke Xu, Hanqin Tian, Peter Weishampel, Jonathan Thom, Dan Baumann, Arlyn E. Andrews, Druce D. Cook, Jennifer Y. King, Randall Kolka. 2015. Landscape-level terrestrial methane flux observed from a very tall tower
- Lynette R. Potvin, Evan S. Kane, Rodney A. Chimner, Randall K. Kolka, Erik A. Lilleskov. 2015. Effects of water table position and plant functional group on plant community, aboveground production, and peat properties in a peatland mesocosm experiment (PEATcosm)
- D.S. Ross, S.W. Bailey, R.D. Briggs, J. Curry, I.J. Fernandez, G. Fredriksen, C.L. Goodale, P.W. Hazlett, P.R. Heine, C.E. Johnson, J.T. Larson, G.B. Lawrence, R.K. Kolka, R. Ouimet, D. Pare, D. deB Richter, C.D. Schirmer, R.A. Warby. 2015. Inter-laboratory variation in the chemical analysis of acidic forest soil reference samples from eastern North America
- X. Comas, N. Terry, M. Warren, R. Kolka, A. Kristiyono, N. Sudiana, D. Nurjaman, T. Darusman. 2015. Imaging tropical peatlands in Indonesia using ground-penetrating radar (GPR) and electrical resistivity imaging (ERI): implications for carbon stock estimates and peat soil characterization
- Todd A. Ontl, Cynthia A. Cambardella, Lisa A. Schulte, Randall K. Kolka. 2015. Factors influencing soil aggregation and particulate organic matter responses to bioenergy crops across a topographic gradient
- Heidi Asbjornsen, Alex S. Mayer, Kelly W. Jones, Theresa Selfa, Leonardo Saenz, Randall K. Kolka, Kathleen E. Halvorsen. 2015. Assessing impacts of payments for watershed services on sustainability in coupled human and natural systems
- Terje Kristensen, Erik Naesset, Mikael Ohlson, Paul V. Bolstad, Randall Kolka. 2015. Mapping above- and below-ground carbon pools in boreal forests: The case for airborne lidar
- J.K. Coleman Wasik, D.R. Engstrom, C.P.J. Mitchell, E.B. Swain, B.A. Monson, S.J. Balogh, J.D. Jeremiason, B.A. Branfireun, R.K. Kolka, J.E. Almendinger. 2015. The effects of hydrologic fluctuation and sulfate regeneration on mercury cycling in an experimental peatland
- Chad Babcock, Andrew O. Finley, John B. Bradford, Randy Kolka, Richard Birdsey, Michael G. Ryan. 2015. LiDAR based prediction of forest biomass using hierarchical models with spatially varying coefficients
- Jiayu Wu, Timothy W. Stewart, Janette R. Thompson, Randy Kolka, Kristie J. Franz. 2015. Watershed features and stream water quality: Gaining insight through path analysis in a Midwest urban landscape, USA
- Jessica R. Miesel, William C. Hockaday, Randy Kolka, Philip A. Townsend. 2015. Soil organic matter composition and quality across fire severity gradients in coniferous and deciduous forests of the southern boreal region
- Karl J. Romanowicz, Evan S. Kane, Lynette R. Potvin, Aleta L. Daniels, Randy Kolka, Erik A. Lilleskov. 2015. Understanding drivers of peatland extracellular enzyme activity in the PEATcosm experiment: mixed evidence for enzymic latch hypothesis
- Brian H. Hill, Randall K. Kolka, Frank H. McCormick, Matthew A. Starry. 2014. A synoptic survey of ecosystem services from headwater catchments in the United States
- Stephen Handler, Matthew J. Duveneck, Louis Iverson, Emily Peters, Robert M. Scheller, Kirk R. Wythers, Leslie Brandt, Patricia Butler, Maria Janowiak, P. Danielle Shannon, Chris Swanston, Kelly Barrett, Randy Kolka, Casey McQuiston, Brian Palik, Peter B. Reich, Clarence Turner, Mark White, Cheryl Adams, Anthony D'Amato, Suzanne Hagell, Patricia Johnson, Rosemary Johnson, Mike Larson, Stephen Matthews, Rebecca Montgomery, Steve Olson, Matthew Peters, Anantha Prasad, Jack Rajala, Jad Daley, Mae Davenport, Marla R. Emery, David Fehringer, Christopher L. Hoving, Gary Johnson, Lucinda Johnson, David Neitzel, Adena Rissman, Chadwick Rittenhouse, Robert Ziel. 2014. Minnesota forest ecosystem vulnerability assessment and synthesis: a report from the Northwoods Climate Change Response Framework project
- Douglas N. Kastendick, Brian J. Palik, Eric K. Zenner, Randy K. Kolka, Charles R. Blinn, Joshua J. Kragthorpe. 2014. Regeneration responses in partially-harvested riparian management zones in northern Minnesota
- Brian H. Hill, Colleen M. Elonen, Terri M. Jicha, Randall K. Kolka, LaRae L.P. Lehto, Stephen D. Sebestyen, Lindsey R. Seifert-Monson. 2014. Ecoenzymatic stoichiometry and microbial processing of organic matter in northern bogs and fens reveals a common P-limitation between peatland types
- M. Mazur, C.P.J. Mitchell, C.S. Eckley, S.L. Eggert, R.K. Kolka, S.D. Sebestyen, E.B. Swain. 2014. Gaseous mercury fluxes from forest soils in response to forest harvesting intensity: A field manipulation experiment
- Gerald J. Gottfried, Peter F. Ffolliott, Kenneth N. Brooks, Randall K. Kolka, Carol B. Raish, Daniel G. Neary. 2014. Contributions of studies on experimental forests to hydrology and watershed management [Chapter 14]
- James M. Vose, Wayne T. Swank, Mary Beth Adams, Devendra Amatya, John Campbell, Sherri Johnson, Frederick J. Swanson, Randy Kolka, Ariel E. Lugo, Robert Musselman, Charles Rhoades. 2014. The role of experimental forests and ranges in the development of ecosystem science and biogeochemical cycling research [Chapter 17]
- Randy Kolka, Brian Sturtevant, Philip Townsend, Jessica Miesel, Peter Wolter, Shawn Fraver, Tom DeSutter. 2014. Post-fire comparisons of forest floor and soil carbon, nitrogen, and mercury pools with fire severity indices
- Tomorra E. Smith, Randall K. Kolka, Xiaobo Zhou, Matthew J. Helmers, Richard M. Cruse, Mark D. Tomer. 2014. Effects of native perennial vegetation buffer strips on dissolved organic carbon in surface runoff from an agricultural landscape
- X. Zhou, M.J. Helmers, H. Asbjornsen, R. Kolka, M.D. Tomer, R.M. Cruse. 2014. Nutrient removal by prairie filter strips in agricultural landscapes
- Shannon B. Hagerty, Kees Jan van Groenigen, Steven D. Allison, Bruce A. Hungate, Egbert Schwartz, George W. Koch, Randall K. Kolka, Paul Dijkstra. 2014. Accelerated microbial turnover but constant growth efficiency with warming in soil
- James M. Vose, Wayne T. Swank, Mary Beth Adams, Devendra Amatya, John Campbell, Sherri Johnson, Frederick J. Swanson, Randy Kolka, Ariel E. Lugo, Robert Musselman, Charles Rhoades. 2014. The role of experimental forests and ranges in the development of ecosystem science and biogeochemical cycling research
- Marlín Pérez-Suárez, Michael J. Castellano, Randall Kolka, Heidi Asbjornsen, Matthew Helmers. 2014. Nitrogen and carbon dynamics in prairie vegetation strips across topographical gradients in mixed Central Iowa agroecosystems
- L.R. Seifert-Monson, B.H. Hill, R.K. Kolka, T.M. Jicha, L.L. Lehto, C.M. Elonen. 2014. Effects of sulfate deposition on pore water dissolved organic carbon, nutrients, and microbial enzyme activities in a northern peatland
- Rodney A. Chimner, Cassandra A. Ott, Charles H. Perry, Randall K. Kolka. 2014. Developing and evaluating rapid field methods to estimate peat carbon
- Salli F. Dymond, Randall K. Kolka, Paul V. Bolstad, Stephen D. Sebestyen. 2014. Long-term soil moisture patterns in a northern Minnesota forest
- C. Rhett Jackson, James A. Thompson, Randall K. Kolka. 2014. Wetland soils, hydrology and geomorphology
- D.M. Olson, T.J. Griffis, A. Noormets, R. Kolka, J. Chen. 2013. Interannual, seasonal, and retrospective analysis of the methane and carbon dioxide budgets of a temperate peatland
- Jason A. Cole, Kristopher D. Johnson, Richard A. Birdsey, Yude Pan, Craig A. Wayson, Kevin McCullough, Coeli M. Hoover, David Y. Hollinger, John B. Bradford, Michael G. Ryan, Randall K. Kolka, Peter Wieshampel, Kenneth L. Clark, Nicholas S. Skowronski, John Hom, Scott V. Ollinger, Steven G. McNulty, Michael J. Gavazzi. 2013. Database for landscape-scale carbon monitoring sites
- Cinzia Fissore, Christian P. Giardina, Randall K. Kolka. 2013. Reduced substrate supply limits the temperature response of soil organic carbon decomposition
- M.E.G. Golay, J.R. Thompson, C.M. Mabry, R.K. Kolka. 2013. An investigation of water nutrient levels associated with forest vegetation in highly altered landscapes
- Kimberly P. Wickland, Alex V. Krusche, Randall K. Kolka, Ayaka W. Kishimoto-Mo, Rodney A. Chimner, Stephen Ogle, Nalin Srivastava. 2013. Inland wetland mineral soils
- J.Y. Wu, J.R. Thompson, R.K. Kolka, K.J. Franz, T.W. Stewart. 2013. Using the storm water management model to predict urban headwater stream hydrological response to climate and land cover change
- Aicam Laacouri, Edward A. Nater, Randall K. Kolka. 2013. Distribution and uptake dynamics of mercury in leaves of common deciduous tree species in Minnesota, U.S.A.
- Todd A. Ontl, Kirsten S. Hofmockel, Cynthia A. Cambardella, Lisa A. Schulte, Randall K. Kolka. 2013. Topographic and soil influences on root productivity of three bioenergy cropping systems
- Michaeleen Gerken Golay, Robert Manatt, Catherine Mabry, Janette Thompson, Randall Kolka. 2013. Restoration of herbaceous woodland plants: persistence, growth, and reproductive success of local and non-local propagules
- V. Hernandez-Santana, X. Zhou, M.J. Helmers, H. Asbjornsen, R. Kolka, M. Tomer. 2013. Native prairie filter strips reduce runoff from hillslopes under annual row-crop systems in Iowa, USA
- R. K. Kolka. 2012. Effects of fire and fuels management on water quality in eastern North America
- Robert T. Brooks, Susan L. Eggert, Keith H. Nislow, Randall K. Kolka, Celia Y. Chen, Darren M. Ward. 2012. Preliminary assessment of mercury accumulation in Massachusetts and Minnesota seasonal forest pools
- Martin Jurgensen, Rachel Tarpey, Jim Pickens, Randy Kolka, Brian Palik. 2012. Long-term effect of silvicultural thinnings on soil carbon and nitrogen pools
- Matthew D. Powers, Randall K. Kolka, John B. Bradford, Brian J. Palik, Shawn Fraver, Martin F. Jurgensen. 2012. Carbon stocks across a chronosequence of thinned and unmanaged red pine (Pinus resinosa) stands
- Mark Gabriel, Randy Kolka, Trent Wickman, Laurel Woodruff, Ed. Nater. 2012. Latent effect of soil organic matter oxidation on mercury cycling within a southern boreal ecosystem
- Brian Palik, Michelle Martin, Erik Zenner, Charles Blinn, Randall Kolka. 2012. Overstory and regeneration dynamics in riparian management zones of northern Minnesota forested watersheds
- Randy Kolka, Aaron Steber, Ken Brooks, Charles H. Perry, Matt Powers. 2012. Relationships between Soil compaction and harvest season, soil texture, and landscape position for aspen forests
- A.C. Guy, T.M. DeSutter, F.X.M. Casey, R. Kolka, H. Hakk. 2012. Water quality, sediment, and soil characteristics near Fargo-Moorhead urban areas as affected by major flooding of the Red River of the north
- Martin R. Risch, John F. DeWild, David P. Krabbenhoft, Randall K. Kolka, Leiming Zhang. 2012. Litterfall mercury dry deposition in the eastern USA
- Jill K. Coleman Wasik, Carl P.J. Mitchell, Daniel R. Engstrom, Edward B. Swain, Bruce A. Monson, Steven J. Balogh, Jeffrey D. Jeremiason, Brian A. Branfireun, Susan L. Eggert, Randall K. Kolka, James E. Almendinger. 2012. Methylmercury declines in a boreal peatland when experimental sulfate deposition decreases
- Carl P.J. Mitchell, Randall K. Kolka, Shawn Fraver. 2012. Singular and combined effects of blowdown, salvage logging, and wildfire on forest floor and soil mercury pools
- Andrew D. Parsekian, Lee Slater, Dimitrios Ntarlagiannis, James Nolan, Stephen D. Sebestyen, Randall K. Kolka, Paul J. Hanson. 2012. Uncertainty in peat volume and soil carbon estimated using ground-penetrating radar and probing
- Douglas N. Kastendick, Eric K. Zenner, Brian J. Palik, Randall K. Kolka, Charles R. Blinn. 2012. Effects of harvesting on nitrogen and phosphorus availability in riparian management zone soils in Minnesota, USA
- Jessica Miesel, P. Goebel, R. Corace, David Hix, Randall Kolka, Brian Palik, David Mladenoff. 2012. Fire effects on soils in Lake States forests: A compilation of published research to facilitate long-term investigations
- Matthew J. Helmers, Xiaobo Zhou, Heidi Asbjornsen, Randy Kolka, Mark D. Tomer, Richard M. Cruse. 2012. Sediment removal by prairie filter strips in row-cropped ephemeral watersheds
- David F. Grigal, Peter C. Bates, Randall K. Kolka. 2011. Ecosystem carbon storage and flux in upland/peatland watersheds in northern Minnesota. Chapter 9.
- Stephen D. Sebestyen, Carrie Dorrance, Donna M. Olson, Elon S. Verry, Randall K. Kolka, Art E. Elling, Richard Kyllander. 2011. Long-term monitoring sites and trends at the Marcell Experimental Forest. Chapter 2.
- Randall K. Kolka, Stephen D. Sebestyen, John B. Bradford. 2011. An evolving research agenda at the Marcell Experimental Forest. Chapter 3.
- Randall K. Kolka, Carl P.J. Mitchell, Jeffrey D. Jeremiason, Neal A. Hines, David F. Grigal, Daniel R. Engstrom, Jill K. Coleman-Wasik, Edward A. Nater, Edward B. Swain, Bruce A. Monson, Jacob A. Fleck, Brian Johnson, James E. Almendinger, Brian A. Branfireun, Patrick L. Brezonik, James B. Cotner. 2011. Mercury cycling in peatland watersheds. Chapter 11.
- Emma L. Witt, Christopher D. Barton, Jeffrey W. Stringer, Daniel W. Bowker, Randall K. Kolka. 2011. Evaluating Best Management Practices for ephemeral channel protection following forest harvest in the Cumberland Plateau - preliminary findings
- Danielle M. Andrews, Christopher D. Barton, Randy Kolka, Charles C. Rhoades, Adam J. Dattilo. 2011. Soil and water characteristics in restored canebrake and forest riparian zones
- Matthew Powers, Randall Kolka, Brian Palik, Rachel McDonald, Martin Jurgensen. 2011. Long-term management impacts on carbon storage in Lake States forests
- Randall K. Kolka, Brian J. Palik, Daniel P. Tersteeg, James C. Bell. 2011. Effects of riparian buffers on hydrology of northern seasonal ponds
- Denys Goychuk, Michael A. Kilgore, Charles R. Blinn, Jay Coggins, Randall K. Kolka. 2011. The effect of timber harvesting guidelines on felling and skidding productivity in northern Minnesota
- Randall K. Kolka, Martin C. Rabenhorst, David Swanson. 2011. Histosols
- John B. Bradford, Peter Weishampel, Marie-Louise Smith, Randall Kolka, Richard A. Birdsey, Scott V. Ollinger, Michael G. Ryan. 2010. Carbon pools and fluxes in small temperate forest landscapes: Variability and implications for sampling design
- Murray C. Richardson, Carl P. J. Mitchell, Brian A. Branfireun, Randall K. Kolka. 2010. Analysis of airborne LiDAR surveys to quantify the characteristic morphologies of northern forested wetlands
- Eric Merten, Nathaniel Hemstad, Susan Eggert, Lucinda Johnson, Randall Kolka, Bruce Vondracek, Raymond Newman. 2010. Relations between fish abundances, summer temperatures, and forest harvest in a northern Minnesota stream system from 1997 to 2007
- Eric C. Merten, Nathaniel A. Hemstad, Randall K. Kolka, Raymond M. Newman, Elon S. Verry, Bruce Vondracek. 2010. Recovery of sediment characteristics in moraine, headwater streams of northern Minnesota after forest harvest
- Randall K. Kolka, Christian P. Giardina, Jason D. McClure, Alex Mayer, Martin F. Jurgensen. 2010. Partitioning hydrologic contributions to an 'old-growth' riparian area in the Huron Mountains of Michigan, USA
- Ryan M. Maher, Heidi Asbjornsen, Randall K. Kolka, Cynthia A. Cambardella, James W. Raich. 2010. Changes in soil respiration across a chronosequence of tallgrass prairie reconstructions
- Xiaobo Zhou, Matthew J. Helmers, Heidi Asbjornsen, Randy Kolka, Mark D. Tomer. 2010. Perennial filter strips reduce nitrate levels in soil and shallow groundwater after grassland-to-cropland conversion
- John Bradford, Peter Weishampel, Marie-Louise Smith, Randall Kolka, Richard A. Birdsey, Scott V. Ollinger, Michael G. Ryan. 2009. Detrital carbon pools in temperate forests: magnitude and potential for landscape-scale assessment
- John B. Bradford, Peter Weishampel, Marie-Louise Smith, Randall Kolka, Richard A. Birdsey, Scott V. Ollinger, Michael G. Ryan. 2009. Detrital carbon pools in temperate forests: magnitude and potential for landscape-scale assessment
- Charles H. (Hobie) Perry, Michael C. Amacher, William Cannon, Randall K. Kolka, Laurel Woodruff. 2009. The distribution of mercury in a forest floor transect across the central United States
- Gail Wells, Deborah Hayes, Katrina Krause, Ann Bartuska, Susan LeVan-Green, Jim Anderson, Tivoli Gough, Mary Adams, Thomas Schuler, Randy Kolka, Steve Sebestyen, Laura Kenefic, John Brissette, Susan Stout, Keith Kanoti, Fred Swanson, Sarah Greene, Margaret Herring, Martin Ritchie, Carl Skinner, Tom Lisle, Elizabeth Keppeler, Leslie Reid, Peter Wohlegemuth, Stanley Kitchen, Ward McCaughey, Jim Guldin, Don Bragg, Michael Shelton, David Loftis, Cathryn Greenberg, Julia Murphy. 2009. Experimental forests and ranges : 100 years of research success stories
- Cinzia Fissore, Christian P. Giardina, Randall K. Kolka, Carl C. Trettin. 2009. Soil organic carbon quality in forested mineral wetlands at different mean annual temperature.
- Cinzia Fissore, Christian P. Giardina, Christopher W. Swanston, Gary M. King, Randall K. Kolka. 2009. Variable temperature sensitivity of soil organic carbon in North American forests
- Emma L. Witt, Randall K. Kolka, Edward A. Nater, Trent R. Wickman. 2009. Forest fire effects on mercury deposition in the boreal forest
- Mark C. Gabriel, Randy Kolka, Trent Wickman, Ed Nater, Laurel Woodruff. 2009. Evaluating the spatial variation of total mercury in young-of-year yellow perch (Perca flavescens), surface water and upland soil for watershed-lake systems within the southern Boreal Shield
- David E. Pelster, Randall K. Kolka, Ellie E. Prepas. 2009. Overstory vegetation influence nitrogen and dissolved organic carbon flux from the atmosphere to the forest floor: Boreal Plain, Canada
- Jaclyn P..Sumner, Michael J. Vepraskas, Randall K. Kolka. 2009. Methods to evvaluate normal rainfall for short-term wetland hydrology assessment
- Peter Weishampel, Randall Kolka, Jennifer Y. King. 2009. Carbon pools and productivity in a 1-km2 heterogeneous forest and peatland mosaic in Minnesota, USA
- E.L. Witt, R.K. Kolka, E.A. Nater, T.R. Wickman. 2009. Influence of the forest canopy on total and methyl mercury deposition in the boreal forest
- Carl P. J. Mitchell, Brian A. Branfireun, Randall K. Kolka. 2009. Methylmercury dynamics at the upland-peatland interface: Topographic and hydrogeochemical controls
- Jeremy C. Steil, Charles R. Blinn, Randy Kolka. 2009. Foresters' perceptions of windthrow dynamics in northern Minnesota riparian management zones
- Carl P.J. Mitchell, Brian A. Branfireun, Randall K. Kolka. 2008. Spatial characteristics of net methylmercury production hot spots in peatlands
- John B. Bradford, Peter Weishampel, Marie-Louise Smith, Randall Kolka, David Y. Hollinger, Richard A. Birdsey, Scott Ollinger, Michael Ryan. 2008. Landscape-scale carbon sampling strategy-lessons learned. Chapter 17
- Randall Kolka, Peter Weishampel, Mats Froberg. 2008. Measurement and importance of dissolved organic carbon. Chapter 13
- Peter Weishampel, Randall Kolka. 2008. Measurement of methane fluxes from terrestrial landscapes using static, non-steady state enclosures. Chapter 12
- Carl P. J. Mitchell, Brian A. Branfireun, Randall K. Kolka. 2008. Total mercury and methylmercury dynamics in upland–peatland watersheds during snowmelt
- Christopher D. Barton, Danielle M. Andrews, Randall K. Kolka. 2008. Evaluating hydroperiod response in restored Carolina Bay Westlands using soil physicochemical properties
- Lisa Schulte, Heidi Asbjornsen, Ryan Atwell, Chad Hart, Matt Helmers, Tom Isenhart, Randy Kolka, Matt Liebman, Jeri Neal, Matt O’Neal, Silvia Secchi, Richard Schultz, Jan Thompson, Mark Tomer, John Tyndall. 2008. A targeted conservation approach for improving environmental quality
- Rachel A. Tarpey, Martin F. Jurgensen, Brian J. Palik, Randy K. Kolka. 2008. The long-term effects of silvicultural thinning and partial cutting on soil compaction in red pine (Pinus resinosa Ait.) and northern hardwood stands in the northern Great Lakes Region of the United States
- Cinzia Fissore, Christian P. Giardina, Randall K. Kolka, Carl C. Trettin, Gary M. King, Martin F. Jurgensen, Christopher D. Barton, S. Douglas McDowell. 2008. Temperature and vegetation effects on soil organic carbon quality along a forested mean annual temperature gradient in North America
- Carl P.J. Mitchell, Brian A. Branfireun, Randall K. Kolka. 2008. Assessing sulfate and carbon controls on net methylmercury production in peatlands: An in situ mesocosm approach
- Aaron Steber, Ken Brooks, Charles H. Perry, Randy Kolka. 2007. Surface compaction estimates and soil sensitivity in Aspen stands of the Great Lakes States
- George B. Landman, Randall K. Kolka, Rebecca R. Sharitz. 2007. Soil seed bank analysis of planted and naturally revegetating thermally-disturbed riparian forests
- Jeff D. Jeremiason, Daniel R. Engstrom, Edward B. Swain, Edward A. Nater, Brian M. Johnson, James E. Almendinger, Bruce A. Monson, Randy K. Kolka. 2006. Sulfate Addition Increases Methylmercury Production in an Experimental Wetland
- Randall K. Kolka, James A. Thompson. 2006. Wetland geomorphology, soils, and formative processes
- Ge Sun, Steve G. McNulty, J. Lu, Devendra M. Amatya, Y. Liang, R.K. Kolka. 2005. Regional annual water yield from forest lands and its response to potential deforestation across the southeastern United States
- James A. Thompson, Randall K. Kolka. 2005. Soil carbon storage estimation in a forested watershed using quantitative soil-landscape modeling
- J.R. Svec, R.K. Kolka, J.W. Stringer. 2005. Defining perennial, intermittent, and ephemeral channels in Eastern Kentucky: Application to forestry best management practices
- Chris B. Coulter, Randy K. Kolka, Thompson James A. 2004. Water quality in agricultural, urban, and mixed land use watersheds
- Ge Sun, Mark Riedel, Rhett Jackson, Randy Kolka, Devendra Amatya, Jim Shepard. 2004. Influences of management of Southern forests on water quantity and quality
- Randy K. Kolka, Mathew F. Smidt. 2004. Effects of forest road amelioration techniques on soil bulk density, surface runoff, sediment transport, soil moisture and seedling growth
- Amanda C. Abnee, James A. Thompson, Randall K. Kolka, Elisa M. D'Angelo, Mark S. Coyne. 2004. Landscape Influences on Potential Soil Respiration Rates in a Forested Watershed of Southeastern Kentucky
- J. M. McClure, R. K. Kolka, A. White. 2004. Effect of forest harvesting best management practices on coarse woody debris distribution in stream and riparian zones in three Appalachian watersheds
- Laura A.B. Giese, W.M. Aust, Randall K. Kolka, Carl C. Trettin. 2003. Biomass and carbon pools of disturbed riparian forests
- R. Birdsey, D. Hollinger, L. Heath, C. Hoover, R. Kolka, M. L. Smith, M. Ryan. 2003. Pilot Studies for Enhanced Forest Land Measurement
- Laura A. B. Giese, W. M. Aust, Randall K. Kolka, Carl C. Trettin. 2003. Biomass and carbon pools of disturbed riparian forests
- E. S. Verry, R. K. Kolka. 2003. Importance of Wetlands to Streamflow Generation
- J. R. Svec, R. K. Kolka, J. W. Stringer. 2003. Defining perennial, intermittent and ephemeral channels in eastern Kentucky: application to forestry best management practices
- R.K. Kolka, Carl C. Trettin, E.A. Nelson, C.D. Barton, D.E. Fletcher. 2002. Application of the EPA wetland research program approach to a floodplain wetland restoration assessment
- R. K. Kolka, C. C. Trettin, E. A. Nelson, C. D. Barton, D. E. Fletcher. 2002. Application of the EPA Wetland Research Program Approach to a floodplain wetland restoration assessment
- Randy Kolka, Mathew Smidt. 2001. Revisiting forest road retirement
- Mathew F. Smidt, Randall K. Kolka. 2001. Alternative skid trail retirement options for steep terrain logging
- R. K. Kolka, D. F. Grigal, E. A. Nater, E. S. Verry. 2001. Hydrologic cycling of mercury and organic carbon in a forested upland-bog watershed
- C.J. Dulohery, R.K. Kolka, M.R. McKevlin. 2000. Effects of a willow overstory on planted seedlings in a bottomland restoration
- Christopher Barton, Eric A. Nelson, Randall K. Kolka, Kenneth W. McLeod, William H. Conner, Michelle Lakly, Douglas Martin, John Wigginton, Carl C. Trettin, Joe Wisniewski. 2000. Restoration of a severely impacted riparian wetland system - The Pen Branch Project
- Eric A. Nelson, Neil C. Dulohery, Randall K. Kolka, William H. Jr..McKee. 2000. Operational restoration of the Pen Branch bottomland hardwood and swamp wetlands - the research setting
- Laura A. Giese, W. Michael Aust, Carl C. Trettin, Randall K. Kolka. 2000. Spatial and temporal patterns of carbon storage and species richness in three South Carolina coastal plain riparian forests
- Randy K. Kolka, J. H. Singer, C. R. Coppock, W. P. Casey, C. C. Trettin. 2000. Influence of restoration and succession on bottomland hardwood hydrology
- Randy K. Kolka, E. A. Nelson, C. C. Trettin. 2000. Conceptual assessment framework for forested wetland restoration: the Pen Branch experience
- D. F. Grigal, Randy K. Kolka, J. A. Fleck, E. A. Nater. 2000. Mercury budget of an upland-peatland watershed
- C. J. Dulohery, Randy K. Kolka, M. R. McKevlin. 2000. Effects of a willow overstory on planted seedlings in a bottomland restoration
- Randy K. Kolka , E. A. Nater, Elon S, Verry. 1999. Atmospheric Inputs of Mercury and Organic Carbon into a Forested Upland/Bog Watershed
- A.S. Knox, A.P. Gamerdinger, D.C. Adriano, R.K. Kolka, D.I. Kaplan. 1999. Sources and Practices Contributing to Soil Contamination
- Randall K. Kolka, D.F. Grigal, E.S. Verry, E.A. Nater. 1999. Mercury and Organic Carbon Relationships in Streams Draining Forested Upland/Peatland Watersheds
- Randall K. Kolka, E.A. Nater, D.F. Grigal, E.S. Verry. 1999. Atmospheric Inputs of Mercury and Organic Carbon into a Forested Upland/Bog Watershed
- R. K. Kolka, D. F. Grigal, E. S. Verry, E. A. Nater. 1999. Mercury and Organic Carbon Relationships in Streams Draining Forested Upland/Peatland Watersheds
- Randall K. Kolka, Ann T. Wolf. 1998. Estimating actual evapotranspiration for forested sites: modifications to the Thornthwaite Model
- Randall K. Kolka, Carl C. Trettin, E.A. Nelson, W.H. Conner. 1998. Tree Seedlings Establishment Across a Hydrologic Gradient in a Bottomland Restoration
- Randall K. Kolka, Eric A. Nelson, Ronald E. Bonar, Neil C. Dulohery, David Gartner. 1998. The Pen Branch Project: Restoration of a Forested Wetland in South Carolina
- Randall K. Kolka, Carl C. Trettin, E.A. Nelson. 1998. Development of an Assessment Framework for Restored Forested Wetlands
- Rolfe A. Leary, Kevin Nimerfro, Margaret Holdaway, Gary Brand, Tom Burk, Randall Kolka, Ann Wolf. 1997. Height growth modeling using second order differential equations and the importance of intial height growth
- Randy K. Kolka, D.F. Grigal, E.A. Nater. 1996. Forest soil mineral weathering rates: use of multiple approaches
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Last updated November 21, 2024