Leetown Science Center

Publications

Filter Total Items: 2,559
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Year Published: 2021

Public and private tapwater: Comparative analysis of contaminant exposure and potential risk, Cape Cod, Massachusetts, USA

BackgroundHumans are primary drivers of environmental contamination worldwide, including in drinking-water resources. In the United States (US), federal and state agencies regulate and monitor public-supply drinking water while private-supply monitoring is rare; the current lack of directly comparable information on contaminant-mixture exposures...

Bradley, Paul; LeBlanc, Denis R.; Romanok, Kristin; Smalling, Kelly; Focazio, Michael J.; Cardon, Mary C.; Clark, Jimmy; Conley, Justin M.; Evans, Nicola; Givens, Carrie E; Gray, James L.; Gray, L. Earl; Hartig, Phillip C.; Higgins, Christopher P.; Hladik, Michelle; Iwanowicz, Luke R.; Loftin, Keith; McCleskey, R. Blaine; McDonough, Carrie A.; Medlock-Kakaley, Elizabeth; Weis, Christopher P.; Wilson, Vickie S.
https://doi.org/10.1016/j.envint.2021.106487

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Year Published: 2021

Genome sequences of 26 white sucker hepatitis B virus isolates from white sucker, catostomus commersonii, inhabiting transboundary waters from Alberta, Canada, to the Great Lakes, USA

We report 26 genomes of the white sucker hepatitis B virus (WSHBV) from the white sucker, Catostomus commersonii. Genome length ranged from 3541 to 3543 bp and nucleotide identity was 96.7% or greater across genomes. This work suggests a geographical range of this virus that minimally extends from the Athabasca River, Alberta, Canada to the Great...

Adams, Cynthia R.; Blazer, Vicki S.; Sherry, Jim; Cornman, Robert S.; Iwanowicz, Luke R.

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Year Published: 2021

Production and characterization of a mouse monoclonal antibody against smallmouth bass (Micropterus dolomieu) IgM

A murine monoclonal antibody (mAb, IgG2a) was produced for the detection of smallmouth bass (Micropterus dolomieu) immunoglobulin (IgM). The antibody is specific for IgM heavy chain and was shown to also recognize the Ig heavy chain of largemouth bass (Micropterus salmoides) and bluegill (Lepomis...

Ottinger, Christopher A.; Smith, Cheyenne R.; Blazer, Vicki S.; Iwanowicz, Luke R.; Vogelbein, Mary Ann; Kaattari, Stephen

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Year Published: 2021

Comparative morphology of freshwater sculpin inhabiting different environmental conditions in the Chesapeake Bay headwaters

We compared body morphology of two freshwater sculpin taxa that inhabit distinct environmental conditions in the Chesapeake Bay watershed of eastern North America: Potomac sculpin (C. girardi, Robins; PS) and checkered sculpin (C. sp. cf. girardi; CS). Both taxa are endemic to the study area, but PS are more broadly distributed than CS...

Hitt, Nathaniel P.; Kessler, Karmann G.; Macmillan, Hannah Eisemann; Rogers, Karli M; Raesly, Richard L.

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Year Published: 2021

Phylogeographic genetic diversity in the white sucker hepatitis B Virus across the Great Lakes Region and Alberta, Canada

Hepatitis B viruses belong to a family of circular, double-stranded DNA viruses that infect a range of organisms, with host responses that vary from mild infection to chronic infection and cancer. The white sucker hepatitis B virus (WSHBV) was first described in the white sucker (Catostomus commersonii), a freshwater teleost, and belongs to the...

Adams, Cynthia R; Blazer, Vicki S.; Sherry, Jim; Cornman, Robert S.; Iwanowicz, Luke R.

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Year Published: 2021

Environmental and anthropogenic drivers of contaminants in agricultural watersheds with implications for land management

If not managed properly, modern agricultural practices can alter surface and groundwater quality and drinking water resources resulting in potential negative effects on aquatic and terrestrial ecosystems. Exposure to agriculturally derived contaminant mixtures has the potential to alter habitat quality and negatively affect fish and other aquatic...

Smalling, Kelly; Devereux, Olivia H.; Gordon, Stephanie; Phillips, Patrick J.; Blazer, Vicki S.; Hladik, Michelle; Kolpin, Dana W.; Meyer, Michael T.; Sperry, Adam; Wagner, Tyler

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Year Published: 2021

Modeling estrogenic activity in streams throughout the Potomac and Chesapeake Bay watersheds

Endocrine-disrupting compounds (EDCs), specifically estrogenic endocrine-disrupting compounds, vary in concentration and composition in surface waters under the influence of different landscape sources and landcover gradients. Estrogenic activity in surface waters may lead to adverse effects in aquatic species at both individual and population...

Gordon, Stephanie; Jones, Daniel K.; Blazer, Vicki S.; Iwanowicz, Luke R.; Williams, Brianna; Smalling, Kelly

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Year Published: 2021

American Black Bear (Ursus americanus)

American black bears (Ursus americanus) are endemic to North America, having speciated from other ursids some 1.2 to 1.8 million years ago (Kurtn & Anderson 1994). During that time, black bears came to occupy nearly all of the forested areas of the North American continent. Historically, black bears were one of the most important mammals to...

Clark, Joseph D.; Beckmann, Jon P.; Boyce, Mark S.; Leopold, Bruce D; Pelton, Michael R.
Clark, J. D., J. P. Beckmann, M. S. Boyce, B. D. Leopold, A. E. Loosen, and M. R. Pelton. 2021. American black bears. Pages 122-138 in Bears of the World: Ecology, Conservation and Management, V. Penteriani and M. Melletti, eds., Cambridge University Press,l Cambridge, United Kingdom.

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Year Published: 2021

In vitro effects-based method and water quality screening model for use in pre- and post-distribution treated waters

Recent urban public water supply contamination events emphasize the importance of screening treated drinking water quality after distribution. In vitro bioassays, when run concurrently with analytical chemistry methods, are effective tools to evaluating the efficacy of water treatment processes and water quality. We tested 49 water...

Medlock-Kakaley, Elizabeth; Cardon, Mary C.; Evans, Nicola; Iwanowicz, Luke R.; Allen, Joshua M.; Wagner, Elizabeth; Bokenkamp, Katherine; Richardson, Susan D; Plewa, Michael J; Bradley, Paul; Romanok, Kristin; Kolpin, Dana W.; Conley, Justin M.; Gray, L. Earl Jr.; Hartig, Phillip C.; Wilson, Vickie S.

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Year Published: 2021

Using expert knowledge to support Endangered Species Act decision‐making for data‐deficient species

Many questions relevant to conservation decision making are characterized by extreme uncertainty due to lack of empirical data and complexity of the underlying ecological processes, leading to a rapid increase in the use of structured protocols to elicit expert knowledge. Published ecological applications often employ a modified Delphi method,...

Fitzgerald, Daniel Bruce; Smith, David R.; Culver, David C.; Feller, Daniel; Fong, Daniel W.; Hajenga, Jeff; Niemiller, Matthew L.; Nolfi, Daniel C.; Orndorff, Wil D.; Douglas, Barbara; Maloney, Kelly O.; Young, John A.

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Year Published: 2021

Monitoring wetland water quality related to livestock grazing in amphibian habitats

Land use alteration such as livestock grazing can affect water quality in habitats of at-risk wildlife species. Data from managed wetlands are needed to understand levels of exposure for aquatic life stages and monitor grazing-related changes afield. We quantified spatial and temporal variation in water quality in wetlands occupied by threatened...

Smalling, Kelly; Rowe, Jennifer; Pearl, Christopher; Iwanowicz, Luke R.; Givens, Carrie E.; Anderson, Chauncey W.; Mccreary, Brome; Adams, Michael J.

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Year Published: 2021

Heed the data gap: Guidelines for using incomplete datasets in annual stream temperature analyses

Stream temperature data are useful for deciphering watershed processes important for aquatic ecosystems. Accurately extracting signal trends from stream temperature is essential for predicting responses of environmental and ecological indicators to change. Missing data periods are common for various reasons, and pose a challenge for scientists...

Johnson, Zachary C.; Johnson, Brittany G.; Briggs, Martin A.; Snyder, Craig D.; Hitt, Nathaniel P.; Devine, Warren