A5028636282- Soil Carbon and Nitrogen Dynamics
- Soil and Water Nutrient Dynamics
- Soil Geostatistics and Mapping
- Microbial Community Ecology and Physiology
- Soil and Unsaturated Flow
- Soil Moisture and Remote Sensing
- Soil Management and Crop Yield
- Soil erosion and sediment transport
- Rangeland and Wildlife Management
- Behavioral and Psychological Studies
- Bacteriophages and microbial interactions
- Seedling growth and survival studies
- Turfgrass Adaptation and Management
- Plant and animal studies
- Insect and Pesticide Research
- Child and Adolescent Psychosocial and Emotional Development
- Invertebrate Taxonomy and Ecology
- Agronomic Practices and Intercropping Systems
- Insect and Arachnid Ecology and Behavior
- Microbial Fuel Cells and Bioremediation
- Agroforestry and silvopastoral systems
- Climate change and permafrost
- Attention Deficit Hyperactivity Disorder
- Ruminant Nutrition and Digestive Physiology
- Hydrocarbon exploration and reservoir analysis
University of Minnesota
2018-2024
University of Iowa
2024
University of Minnesota Crookston
2023
Great Lakes Bioenergy Research Center
2018-2021
University of Wisconsin–Madison
2015-2019
Abstract The reconstruction of bacterial and archaeal genomes from shotgun metagenomes has enabled insights into the ecology evolution environmental host-associated microbiomes. Here we applied this approach to >10,000 collected diverse habitats covering all Earth’s continents oceans, including human animal hosts, engineered environments, natural agricultural soils, capture extant microbial, metabolic functional potential. This comprehensive catalog includes 52,515 metagenome-assembled...
Soil health is a pathway through which farm and environmental outcomes can be improved together on agricultural landscapes, management to improve soil increasingly recognized as strategy for producers adapt climate change-related impacts such erosion flooding. Many incentive programs exist or are in development support the adoption of practices that promote these reasons, but few on-farm trials have compared intersections farmer versus researcher observations with adaptation. The purpose our...
There is increasing interest in perennial crops to build soil carbon (C), but the mechanisms underlying C accrual croplands remain unclear, especially over time first years of crop growth. To address this gap, research needed that directly tracks intra-annual fluxes through crop-microbial-soil pools, evaluating capacity intra-decadal periods. We conducted a 13C isotope-tracer study compare within-season uptake and partitioning patterns between 1-year-old (IWG-1) 2-year-old (IWG-2) stands...
To evaluate the prevalence, trends, and factors associated with psychotropic medication use polypharmacy among children adolescents initiating intensive behavioral therapy for severe challenging behavior over a 10-year period.
An amendment to this paper has been published and can be accessed via a link at the top of paper.
Core Ideas Bluegrass cover crop decreased maize productivity compared to rye or no crop. Cover biomass was greater with silage than grain, but net ecosystem carbon balance negative. growth did not offset removal. Seasonal rhizosphere priming affect balance. crops have potential increase C (NECB) and subsequent accrual of soil organic (SOC) by lengthening the growing season in annual agriculture. By measuring primary (NPP) lost harvest heterotrophic respiration (R h ), our objective evaluate...
There is insufficient evidence for how cover crop-driven changes to the soil microbial community affect organic carbon (SOC) accumulation. One mechanism by which enhanced activity can contribute SOC accrual through conversion of plant inputs biomass and ultimately necromass that may form organo–mineral associations with particles. Here we investigated effects winter rye as a crop harvested forage double on SOC, chemically labile complex C fractions, biomarkers (amino sugars), potential...
Understanding the complex interplay of biotic and abiotic controls on soil organic carbon (SOC) stabilization aggregate formation is a vital evolving research field, with implications for C climate change modeling. Here, we delve into effects temperature moisture treatments SOC composition. Aggregate fractions representing different levels physical protection were isolated three times during 6-month incubation 2x2 factorial (22 or 30 °C, 45% 65% water-filled pore space). The chemical...
As soil plays an integral role in the water cycle, dynamic and inherent attributes of are important drivers amount quality streams, lakes, groundwater. Studies have demonstrated links between agricultural management movement soil, to edge fields, across entire watersheds that feed bodies interest. Still, not enough is known about linkages management, health, watershed adequately predict impacts land use changes effectively as a tool for resource management. We describe here mechanisms...
Abstract Soil health assessments aim to quantify soil status using indicators linked ecosystem services such as yield, nutrient cycling, water or carbon storage. Many are related biological processes, which can be challenging interpret because they sensitive not only management, but also nonmanagement variables inherent properties, topography, and climate. Existing studies address this challenge by grouping similar soils taxonomy, geography, a combination of these other for assessment. We...
Abstract A major challenge to implementing effective soil health assessments is how distinguish the effects of management from underlying variability driven by inherent properties. This has important consequences for use indicators as tools monitoring and assessment because soil‐forming factors constrain range indicator values magnitude management‐induced changes. Here, we present results a statewide survey 15 measured on 30 fields commercial farms across four land resource areas in...
Recent meta-analyses about the efficacy of cover crops predict increased (a) soil organic matter (Poeplau and Don 2015), (b) arbuscular mycorrhizal fungi colonization (Bowles et al. 2017), (c) nutrient conservation (Quemada 2013; Kladivko 2014; Han all while improving (with legume crops), or at least not reducing grass main crop yields (Tonitto 2006; Marcillo Miguez 2017). These analyses broadly support adoption, both survey satellite data suggest that use in North Central United States is...
A Correction to this paper has been published: https://doi.org/10.1038/s41587-021-00898-4.
Abstract The Haney Soil Health Test (HSHT) is used to quantify soil health using biological activity and water‐extractable C N. However, suitability of the HSHT measure in subsurface drained fields remains unknown. Our goals were use Minnesota cropand (a) test effect recent tile drainage installation, (b) evaluate seasonal variability, (c) calculate a potential N fertilizer credit. Three indices measured seasonally across 2 yr score All metrics unaffected by drainage, but all varied...
Abstract Ants play multiple roles in ecosystems, but their ability to affect decomposition processes temperate grasslands is relatively unknown. We investigated whether the suppression of ant populations influenced litter via predation some decomposers (e.g., mites and springtails) and/or microbial activity composition. performed two successful treatments (seven weeks, 37% suppression, year 1, 10 70% 2) over course a 59‐week experiment. then assayed effects using coarse‐ fine‐mesh litterbags...
Subsurface drainage is a common practice used to support agricultural production and increase yields in poorly drained soils. Following decades of subsurface installation, fields often have increased water discharge nutrient losses. However, few studies evaluated the changes soil properties or health metrics at different ages drainage. In this study, we attempt quantify over time. To achieve this, sampled six northwest Minnesota representing two timescales: three were more than 15 years...
There is increasing interest in perennial crops to build soil carbon (C) agricultural production systems, but the mechanisms underlying C accrual croplands remain unclear. Research that directly tracks intra-annual fluxes through crop-microbial-soil pools necessary evaluate capacity of over intra-decadal time periods. We conducted a 13C isotope-tracer study compare within-season uptake and partitioning patterns between 1-year-old (IWG-1) 2-year-old (IWG-2) novel grain crop, intermediate...