Publications
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Filter Total Items: 44
Improved fish counting method accurately quantifies high‐density fish movement in dual‐frequency identification sonar data files from a coastal wetland environment
There are many ways to quantify fish movement through shallow‐water habitats, but most noninvasive methods (e.g., visual counts) are not effective in turbid coastal wetland waters of the Great Lakes. Dual‐frequency identification sonar (DIDSON) technology (Sound Metrics) offers a noninvasive, hydroacoustic‐based approach to characterize fish movement in wetlands and other habitats by collecting hi
Authors
Michael R. Eggleston, Scott W. Milne, Maxwell Ramsay, Kurt P. Kowalski
Growth and behavior of North American microbes on Phragmites australis leaves
Phragmites australis subsp. australis is a cosmopolitan wetland grass that is invasive in many regions of the world, including North America, where it co-occurs with the closely related Phragmites australis subsp. americanus. Because the difference in invasive behavior is unlikely to be related to physiological differences, we hypothesize that interactions with unique members of their microbiomes
Authors
Aaron E. Devries, Kurt P. Kowalski, Wesley A. Bickford
Tracking phosphorus and sediment sources and transport from fields and channels in Great Lakes Restoration Initiative priority watersheds
A multi-agency, integrated series of studies were initiated in 2017 under the Great Lakes Restoration Initiative (GLRI) by the U.S. Geological Survey, U.S. Forest Service, and the University of Minnesota to quantify the source, downstream travel time, and storage of particulate-bound phosphorus and sediment in agricultural tributaries to the Great Lakes. Of particular interest are contributions at
Authors
Tanja N. Williamson, Faith A. Fitzpatrick, Diana L. Karwan, Randall K. Kolka, Edward G. Dobrowolski, James Blount, Ethan D. Pawlowski
Review: Endophytic microbes and their potential applications in crop management
Endophytes are microbes (mostly bacteria and fungi) present in plants. Endophytic microbes are often functional in that they may carry nutrients from the soil into plants, modulate plant development, increase stress tolerance of plants, suppress virulence in pathogens, increase disease resistance in plants, and suppress development of competitor plant species. Endophytic microbes have been shown:
Authors
James F. White, Kathryn L. Kingsley, Matthew T. Elmore, Satish Kumar Verma, Surendra K Gond, Kurt P. Kowalski
Manipulating wild and tamed phytobiomes: Challenges and opportunities
This white paper presents a series of perspectives on current and future phytobiome management, discussed at the Wild and Tamed Phytobiomes Symposium in University Park, PA, USA, in June 2018. To enhance plant productivity and health, and to translate lab- and greenhouse-based phytobiome research to field applications, the academic community and end-users need to address a variety of scientific, p
Authors
Terrence H. Bell, Kevin L. Hockett, Ricardo Ivan Alcalá-Briseño, Mary Barbercheck, Gwyn A. Beattie, Mary Ann Bruns, John E. Carlson, Taejung Chung, Alyssa Collins, Bryan Emmett, Paul Esker, Karen Garrett, Leland Glenna, Beth K. Gugino, Maria del Mar Jimenez-Gasco, Linda Kinkel, Jasna Kovac, Kurt P. Kowalski, Gretchen Kuldau, Johan H. J. Leveau, Matthew J. Michalska-Smith, Jessica Myrick, Kari Peter, Maria Fernanda Vivanco Salazar, Ashley Shade, Nejc Stopnisek, Xiaoquing Tan, Amy T. Welty, Etienne Yergeau, Kyle Wickings
Delineation of tile-drain networks using thermal and multispectral imagery—Implications for water quantity and quality differences from paired edge-of-field sites
As part of the Great Lakes Restoration Initiative, paired edge-of-field sites were established in high priority subwatersheds to assess the effectiveness of agricultural management practices. One pairing was in Black Creek, a tributary to the Maumee River and Lake Erie. These fields were paired because of similarity in soils, topography, and agricultural management. Following two years of baseline
Authors
Tanja N. Williamson, Edward G. Dobrowolski, Shawn M. Meyer, Jeffrey W. Frey, Barry J. Allred
Root endophytes and invasiveness: no difference between native and non‐native Phragmites in the Great Lakes Region
Microbial interactions could play an important role in plant invasions. If invasive plants associate with relatively more mutualists or fewer pathogens than their native counterparts, then microbial communities could foster plant invasiveness. Studies examining the effects of microbes on invasive plants commonly focus on a single microbial group (e.g., bacteria) or measure only plant response to m
Authors
Wesley A. Bickford, Deborah E. Goldberg, Kurt P. Kowalski, Donald R. Zak
Assessing the impact of site-specific BMPs using a spatially explicit, field-scale SWAT model with edge-of-field and tile hydrology and water-quality data in the Eagle Creek watershed, Ohio
The Eagle Creek watershed, a small subbasin (125 km2) within the Maumee River Basin, Ohio, was selected as a part of the Great Lakes Restoration Initiative (GLRI) “Priority Watersheds” program to evaluate the effectiveness of agricultural Best Management Practices (BMPs) funded through GLRI at the field and watershed scales. The location and quantity of BMPs were obtained from the U.S. Department
Authors
Katherine R. Merriman, Prasad Daggupati, Raghavan Srinivasan, Chad Toussant, Amy M. Russell, Brett A. Hayhurst
Rhizophagy cycle: An oxidative process in plants for nutrient extraction from symbiotic microbes
In this paper, we describe a mechanism for the transfer of nutrients from symbiotic microbes (bacteria and fungi) to host plant roots that we term the ‘rhizophagy cycle.’ In the rhizophagy cycle, microbes alternate between a root intracellular endophytic phase and a free-living soil phase. Microbes acquire soil nutrients in the free-living soil phase; nutrients are extracted through exposure to ho
Authors
James F. White, Kathryn L. Kingsley, Satish Kumar Verma, Kurt P. Kowalski
Using turbidity measurements to estimate total phosphorus and sediment flux in a Great Lakes coastal wetland
Coastal wetlands around the Laurentian Great Lakes in North America have the potential to intercept surface water coming off of the landscape and reduce the amount of nutrients and sediment entering the lakes. However, extensive coastal wetland areas have been isolated behind dikes and thus have limited interaction with nutrient-rich waters that contribute to harmful algal blooms and other water-q
Authors
Joseph J. Baustian, Kurt P. Kowalski, Alex Czayka
Reproductive success and contaminant associations in tree swallows (Tachycineta bicolor) used to assess a Beneficial Use Impairment in U.S. and Binational Great Lakes’ Areas of Concern
During 2010-2014, tree swallow (Tachycineta bicolor) reproductive success was monitored at 68 sites across all 5 Great Lakes, including 58 sites located within Great Lakes Areas of Concern (AOCs) and 10 non-AOCs. Sample eggs were collected from tree swallow clutches and analyzed for contaminants including polychlorinated biphenyls (PCBs), dioxins and furans, polybrominated diphenyl ethers, and 34
Authors
Christine M. Custer, Thomas W. Custer, Matthew A. Etterson, Paul Dummer, Diana R. Goldberg, J. Christian Franson
Annual variation in polychlorinated biphenyl (PCB) exposure in tree swallow (Tachycineta bicolor) eggs and nestlings at Great Lakes Restoration Initiative (GLRI) study sites
Tree swallow (Tachycineta bicolor) eggs and nestlings were collected from 16 sites across the Great Lakes to quantify normal annual variation in total polychlorinated biphenyl (PCB) exposure and to validate the sample size choice in earlier work. A sample size of five eggs or five nestlings per site was adequate to quantify exposure to PCBs in tree swallows given the current exposure levels and va
Authors
Christine M. Custer, Thomas W. Custer, Paul Dummer, Diana R. Goldberg, J. Christian Franson