Winter 2020 Resources and Publications

Time scales of arsenic variability and the role of high-frequency monitoring at three water-supply wells in New Hampshire, USA 
Degnan, J.R., J.P. Levitt, M.L. Erickson, B.C. Jurgens, B.D. Lindsey and J.D. Ayotte. 
Science of The Total Environment 2020

Groundwater geochemistry, redox process classification, high-frequency physicochemical and hydrologic measurements, and climate data were analyzed to identify controls on arsenic (As) concentration changes. Groundwater was monitored in two public-supply wells (one glacial aquifer and one bedrock aquifer), and one bedrock-aquifer domestic well in New Hampshire, USA, from 2014 to 2018 to identify time scales of and controls on As concentration changes.

Consequences of lake and river ice loss on cultural ecosystem services
Knoll, L.B., S. Sharma, B.A. Denfeld, G.Flaim, Y. Hori, J.J. Magnuson, D.Straile and G.A. Weyhenmeyer
Limnology and Oceanography Letters 2019

People extensively use lakes and rivers covered by seasonal ice. Although ice cover duration has been declining over the past 150 years for Northern Hemisphere freshwaters, we know relatively little about how ice loss directly affects humans. Here, we synthesize the cultural ecosystem services (i.e., services that provide intangible or nonmaterial benefits) and associated benefits supported by inland ice.

Co-limitation by N and P Characterizes Phytoplankton Communities Across Nutrient Availability and Land Use
Bratt, A.R., J. C. Finlay, J.R. Welter, B.A. Vculek and R.E. Van Allen
Ecosystems 2019

Historically, freshwater lakes have been widely assumed to be singly limited by phosphorus (P) because the dominant paradigm assumes that nitrogen fixation (N2 fixation) will compensate for any nitrogen (N) deficits. However, a growing body of evidence demonstrates that primary producer response to nutrient manipulation most frequently indicates co-limitation by N and P. Differences in N and P supply ratio have been shown to influence the identity and severity of nutrient limitation, but whether N and P concentration and the ratio of N to P concentrations can explain the frequency of co-limitation in aquatic primary producer assemblages remains unclear, especially in ecosystems subject to human perturbation that strongly increase nutrient availability

Phosphorus Transport in Intensively Managed Watersheds
Dolph, C.L., E. Boardman, M. Danesh‐Yazdi  J.C. Finlay, A.T. Hansen, A.C. Baker and B.Dalzell
AGU 100 Water Resources Research 2019

Understanding controls of P movement through watersheds is essential for improved landscape management in intensively managed regions. Here, we analyze observational data from 104 gaged river sites and 176 non‐gaged river sites within agriculturally‐dominated watersheds of Minnesota, USA to understand the role of landscape features, land use practices, climate variability and biogeochemical processes in total, dissolved and particulate P dynamics at daily to annual scales.

Water and Sediment Act as Reservoirs for Microbial Taxa Associated with Invasive Dreissenid Mussels
Mathaia, P.P., P. Magnonea, H.M.Dunna and M. J.Sadowsky
Science of the Total Environment 2019

Zebra mussels (Dreissena polymorpha) are invasive, filter-feeding, bivalves that have disrupted the ecology of thousands of freshwater biomes across North America. Due to their efficient filter-feeding activity, zebra mussels (ZMs) and other bivalves are extensively used to detect chemical contamination in waterways. In this study, we evaluated whether water and sediment serve as major sources of ZM tissue-associated microbiota, and whether ZMs serve as a reservoir for potentially pathogenic microbes in aquatic systems.

Optomizing Stormwater Treatment Practices: Chapter 3 Stormwater Treatment Processes
Erickson, A.J., P.T. Weiss and J.S Gulliver
Springer New York 2019

Stormwater treatment practices may reduce runoff volumes, contaminant concentrations, and/or the total contaminant mass load carried by runoff into receiving water bodies. Processes used by treatment practices include physical processes such as sedimentation, filtration, and infiltration, along with thermal, biological, and chemical processes. A single treatment practice may use multiple processes