Unified Interior Regions

Region 4: Mississippi Basin

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Year Published: 2019

The use of continuous water-quality time-series data to compute nutrient loadings for selected Iowa streams, 2008–17

In support of nutrient reduction efforts, nitrate (as nitrate plus nitrite) and phosphorus loads and yields were computed for selected streams in Iowa based on continuously monitored sensor data for 2008–17 and 2014–17, respectively. Sample data were used to assess nitrate sensor bias and to create phosphorus-turbidity surrogate models. Where...

Garrett, Jessica D.
Garrett, J.D., 2019, The use of continuous water-quality time-series data to compute nutrient loadings for selected Iowa streams, 2008–17: U.S. Geological Survey Scientific Investigations Report 2019–5054, 31 p., https://doi.org/10.3133/sir20195054.

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Year Published: 2019

A 3-year in-situ measurement of CO2 efflux in coastal wetlands: Understanding carbon loss through ecosystem respiration and its partitioning

Understanding the link between ecosystem respiration (Reco) and its influential factors is necessary to evaluate the sources of gaseous carbon loss in coastal wetlands. Seablite (Suaeda salsa Pall.) is the main vegetation type pioneering temperate coastal wetlands in northeast China, and is generally an understudied wetland type. To evaluate the...

Yu, Xueyang; Ye, Siyuan; Olsson, Linda; Wei, Mengjie; Krauss, Ken; Brix, Hans
Yu, X., Ye, S., Olsson, L., Wei, M., Krauss, K.W., and Brix, H., 2019, A 3-year in-situ measurement of CO2 efflux in coastal wetlands: understanding carbon loss through ecosystem respiration and its partitioning: Wetlands, First Online, https://doi.org/10.1007/s13157-019-01197-0.

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Year Published: 2019

Assessment of polycyclic aromatic hydrocarbon concentrations in southern Lake Powell, Glen Canyon National Recreation Area, Arizona and Utah, 2016–17

Polycyclic aromatic hydrocarbon contamination related to boat use is one of the most important water-quality issues affecting Lake Powell. High concentrations of polycyclic aromatic hydrocarbons in water are common around marinas and other areas with extensive motorboat activity because of releases of uncombusted or partially combusted oil and...

Coes, Alissa L.; Paretti, Nicholas V.; Alvarez, David A.; Macy, Jamie P.
Coes, A.L., Paretti, N.V., Alvarez, D.A., and Macy, J.P., 2019, Assessment of polycyclic aromatic hydrocarbon concentrations in southern Lake Powell, Glen Canyon National Recreation Area, Arizona and Utah, 2016–17: U.S. Geological Survey Scientific Investigations Report 2019–5065, 26 p., https://doi.org/10.3133/sir20195065.

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Year Published: 2019

FLUXNET-CH4 synthesis activity: Objectives, observations, and future directions

This paper describes the formation of, and initial results for, a new FLUXNET coordination network for ecosystem-scale methane (CH4) measurements at 60 sites globally, organized by the Global Carbon Project in partnership with other initiatives and regional flux tower networks. The objectives of the effort are presented along with an overview of...

Knox, Sara H.; Jackson, Robert B.; Poulter, Benjamin; McNicol, Gavin; Fluet-Chouinard, Etienne; Zhang, Zheng; Hugelius, Gustaf; Bousquet, Philippe; Canadell, Josep G; Saunois, Marielle; Papale, Dario; Chu, Housen; Keenan, Trevor F.; Baldocchi, Dennis; Torn, Margaret S; Mammarella, Ivan; Trotta, Carlo; Aurela, Mika; Bohrer, Gil; Campbell, David I; Cescatti, Alessandro; Chamberlain, Samuel D.; Chen, Jiquan; Chen, Weinan; Dengel, Sigrid; Desai, Ankur R.; Euskirchen, Eugenie S; Friborg, Thomas; Gasbarra, Daniele; Goded, Ignacio; Goeckede, Mathias; Heimann, Martin; Helbig, Manuel; Hirano, Takashi; Hollinger, David Y.; Iwata, Hiroki; Kang, Minseok; Klatt, Janina; Krauss, Ken; Kutzbach, Lars; Lohila, Annalea; Mitra, Bhaskar; Morin, Timothy H; Nilsson, Mats B; Niu, Shuli; Noormets, Asko; Oechel, Walter C.; Peichl, Matthias; Peltola, Olli; Reba, Michele L.; Richardson, Andrew D.; Runkle, Benjamin R K; Ryu, Youngryel; Sachs, Torsten; Schäfer, Karina V R; Schmid, Hans Peter; Shurpali, Narasinha; Sonnentag, Oliver; Tang, Angela C I; Ueyama, Masahito; Vargas, Rodrigo; Vesala, Timo; Ward, Eric; Windham-Myers, Lisamarie; Wohlfahrtd, Georg; Zona, Donatella

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Year Published: 2019

Northern forest winters have lost cold, snowy conditions that are important for ecosystems and human communities

Winter is an understudied but key period for the socio-ecological systems of northeastern North American forests. A growing awareness of the importance of the winter season to forest ecosystems and surrounding communities has inspired several decades of research, both across the northern forest and at other mid- and high-latitude ecosystems around...

Contosta, Alexandra R; Casson, Nora J.; Garlick, Sarah; Nelson, Sarah J.; Ayers, Matthew P; Buralkowski, Elizabet A; Campbell, John ; Creed, Irean; Eimers, Catharine; Evans, Celia; Fernandez, Ivan; Fuss, Collin; Huntington, Thomas; Pate, Kaizad; Sanders-DeMott, Rebecca; Son, Kyongo; Templer, Pamela H.; Thornbrugh, Darren

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Year Published: 2019

Environmental DNA assays for invasive populations of the Black Carp, Mylopharyngodon piceus, in North America

The Black Carp, Mylopharyngodon piceus, is an increasingly widespread invasive species in North America that threatens freshwater mussel populations. We developed four qPCR assays for detecting environmental DNA (eDNA) from these Black Carp populations. Assays were designed to target four mitochondrial DNA loci and were based on 34 complete...

Guan, Xin; Monroe, E.M.; Bockrath, K.D.; Mize, Erica L.; Rees, C.B.; Lindsay, Denise L.; Baerwaldt, Kelly L.; Nico, Leo; Lance, Richard F.
Guan, X., Monroe, E.M., Bockrath, K.D., Mize, E.L., Rees, C.B., Lindsay, D.L., Baerwaldt, K.L., Nico, L.G., and Lance, R.F., 2019, Environmental DNA assays for invasive populations of the Black Carp, Mylopharyngodon piceus, in North America: Transactions of the American Fisheries Society, First Published, https://doi.org/10.1002/tafs.10195.

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Year Published: 2019

First examination of diet items consumed by wild-caught black carp (Mylopharyngodon piceus) in the U.S.

Black carp (Mylopharyngodon piceus) were imported to the U.S. in the 1970s to control snails in aquaculture ponds and have since escaped from captivity. The increase in captures of wild fish has raised concerns of risk to native and imperiled unionid mussels given previous literature classified this species a molluscivore. We acquired black carp...

Poulton, Barry C.; Kroboth, Patrick; Aiken, George; Chapman, Duane C.; Bailey, J.; McMurray, Stephen E.; Faiman, John S.

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Year Published: 2019

Predictive analysis using chemical-gene interaction networks consistent with observed endocrine activity and mutagenicity of U.S. streams

In a recent U.S. Geological Survey/U.S. Environmental Protection Agency study assessing >700 organic compounds in 38 streams, in vitro assays indicated generally low estrogen, androgen, and glucocorticoid receptor activities, but identified 13 surface waters with 17β estradiol equivalent (E2Eq) activities greater than the 1 ng/L level of...

Berninger, Jason P.; DeMarini, David M.; Warren, Sarah H.; Simmons, Jane Ellen; Wilson, Vickie S.; Conley, Justin M.; Armstrong, Mikayla D.; Kolpin, Dana W.; Kuivila, Kathryn; Reilly, Timothy J.; Romanok, Kristin M.; Villeneuve, Daniel L.; Bradley, Paul M.; Iwanowicz, Luke R.

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Year Published: 2019

Integrative taxonomy reveals a new species of freshwater mussel, Potamilus streckersoni sp. nov. (Bivalvia: Unionidae): Implications for conservation and management

Inaccurate systematics confound our ability to determine evolutionary processes that have led to the diversification of many taxa. The North American freshwater mussel tribe Lampsilini is one of the better-studied groups in Unionidae, however, many supraspecific relationships between lampsiline genera remain unresolved. Two genera previously...

Smith, Chase H.; Johnson, Nathan; Inoue, Kentaro; Doyle, Robert; Randklev, Charles R.

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Year Published: 2019

Perspective: Developing flow policies to balance the water needs of humans and wetlands requires a landscape scale approach inclusive of future scenarios and multiple timescales

Maintenance of the natural flow regime is essential for continued wetland integrity; however, the flow regime is greatly influenced by both natural and anthropogenic forces. Wetlands may be particularly susceptible to altered flow regimes as they are directly impacted by water flows at a variety of time scales. In Puerto Rico, contemporary water...

Murry, Brent; Bowden, Jared; Branoff, Benjamin; Garcia-Bermudez, Miguel; Middleton, Beth; Ortiz-Zayas, Jorge; Restrepo, Carla; Terando, Adam

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Year Published: 2019

Hydrologic site assessment for passive treatment of groundwater nitrogen with permeable reactive barriers, Cape Cod, Massachusetts

Wastewater disposal associated with rapid population growth and development on Cape Cod, Massachusetts, during the past several decades has resulted in widespread contamination of groundwater with nitrogen. As a result, water quality in many of the streams, lakes, and coastal embayments on Cape Cod is impaired by excess nitrogen. To reduce...

Barbaro, Jeffrey R.; Belaval, Marcel; Truslow, Danna B.; LeBlanc, Denis R.; Cambareri, Thomas C.; Michaud, Scott C.
Barbaro, J.R., Belaval, M., Truslow, D.B., LeBlanc, D.R., Cambareri, T.C., and Michaud, S.C., 2019, Hydrologic site assessment for passive treatment of groundwater nitrogen with permeable reactive barriers, Cape Cod, Massachusetts: U.S. Geological Survey Scientific Investigations Report 2019–5047, 39 p., https://doi.org/10.3133/sir20195047.

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Year Published: 2019

The relationship of channel planform and point bar architecture on a reach of the Wabash River near Grayville, Illinois

The erosional and depositional characteristics of meandering rivers lead to the formation and maintenance of point bars along the inner banks of meander bends. Point bars are composed of sediment layers in patterns resulting from the rate and style of channel migration, hydrodynamics, and sediment transport and deposition within the river system (...

Rowley, Taylor; Konsoer, Kory; Ursic, Mick; Langendoen, Eddy J.