Výsledky vyhledávání - "Barbara J. Mahler"

Inclusion of Pesticide Transformation Products Is Key to Estimating Pesticide Exposures and Effects in Small U.S. Streams

Autor: Peter C. Van Metre, Barbara J. Mahler, Lisa H. Nowell, Paul M. Bradley, Christopher P. Konrad, Mark W. Sandstrom, Kristin M. Romanok

Publikováno v: Environmental Science & Technology. 55:4740-4752

Improved analytical methods can quantify hundreds of pesticide transformation products (TPs), but understanding of TP occurrence and potential toxicity in aquatic ecosystems remains limited. We quantified 108 parent pesticides and 116 TPs in more tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::16106c588d9f374a215235071c683fef
https://doi.org/10.1021/acs.est.0c06625

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Ecological consequences of neonicotinoid mixtures in streams

Autor: Travis S. Schmidt, Janet L. Miller, Barbara J. Mahler, Peter C. Van Metre, Lisa H. Nowell, Mark W. Sandstrom, Daren M. Carlisle, Patrick W. Moran, Paul M. Bradley

Publikováno v: Science Advances. 8

Neonicotinoid mixtures are common in streams worldwide, but corresponding ecological responses are poorly understood. We combined experimental and observational studies to narrow this knowledge gap. The mesocosm experiment determined that concentrati

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::731f3fb901f4ac95b8ca1fbc6760ee75
https://doi.org/10.1126/sciadv.abj8182

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Biofilms Provide New Insight into Pesticide Occurrence in Streams and Links to Aquatic Ecological Communities

Autor: Barbara J. Mahler, Michelle L. Hladik, Lisa H. Nowell, Travis S. Schmidt, Daren M. Carlisle, Sharon L. Qi, Jason T. May, Mark D. Munn, Peter C. Van Metre

Publikováno v: Environmental Science & Technology. 54:5509-5519

Streambed sediment is commonly analyzed to assess occurrence of hydrophobic pesticides and risks to aquatic communities. However, stream biofilms also have the potential to accumulate pesticides and may be consumed by aquatic organisms. To better cha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::df11cf5c611dd81d051b1597ad41f72e
https://doi.org/10.1021/acs.est.9b07430

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Sediment Sources and Sealed-Pavement Area Drive Polycyclic Aromatic Hydrocarbon and Metal Occurrence in Urban Streams

Autor: Peter C. Van Metre, Barbara J. Mahler, Sharon L. Qi, Allen C. Gellis, Christopher C. Fuller, Travis S. Schmidt

Publikováno v: Environmental sciencetechnology. 56(3)

Metals and polycyclic aromatic hydrocarbons (PAHs) are common pollutants in urban streambed sediment, yet their occurrence is highly variable and difficult to predict. To investigate sources of PAHs and metals to streambed sediment, we sampled paveme

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d854ed6b2f6ed624bd2ebdb314dab36c
https://pubmed.ncbi.nlm.nih.gov/35045246

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Is there an urban pesticide signature? Urban streams in five U.S. regions share common dissolved-phase pesticides but differ in predicted aquatic toxicity

Autor: Patrick W. Moran, Barbara J. Mahler, Lisa H. Nowell, Peter C. Van Metre, Paul M. Bradley, Sharon L. Qi, Daniel T. Button, Travis S. Schmidt, Laura M. Bexfield

Publikováno v: The Science of the total environment. 793

Pesticides occur in urban streams globally, but the relation of occurrence to urbanization can be obscured by regional differences. In studies of five regions of the United States, we investigated the effect of region and urbanization on the occurren

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c2ecbd60da2334e5f59aa6175f2fd2b0
https://pubmed.ncbi.nlm.nih.gov/34182445

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Multiple in-stream stressors degrade biological assemblages in five U.S. regions

Autor: Barbara J. Mahler, Michael R. Meador, Patrick W. Moran, Mark D. Munn, Daren M. Carlisle, Ian R. Waite, Peter C. Van Metre, Lisa H. Nowell, Allen C. Gellis, Christopher P. Konrad, Paul M. Bradley, Travis S. Schmidt

Publikováno v: The Science of the total environment. 800

Biological assemblages in streams are affected by a wide variety of physical and chemical stressors associated with land-use development, yet the importance of combinations of different types of stressors is not well known. From 2013 to 2017, the U.S

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b4c75b187a6624270e269791978a4903
https://pubmed.ncbi.nlm.nih.gov/34399326

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New-generation pesticides are prevalent in California's Central Coast streams

Autor: Mark W. Sandstrom, Lisa H. Nowell, Peter C. Van Metre, Barbara J. Mahler

Publikováno v: Science of The Total Environment. 806:150683

Pesticides are widely recognized as important biological stressors in streams, especially in heavily developed urban and agricultural areas like the Central California Coast region. We assessed occurrence and potential toxicity of pesticides in small

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::228ae900e12e1aab09af0cde2e036bd8
https://doi.org/10.1016/j.scitotenv.2021.150683

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Complex mixtures of dissolved pesticides show potential aquatic toxicity in a synoptic study of Midwestern U.S. streams

Autor: Lisa H. Nowell, Julia E. Norman, Megan E. Shoda, Michelle L. Hladik, Wesley W. Stone, Patrick W. Moran, Naomi Nakagaki, Peter C. Van Metre, Mark W. Sandstrom, Barbara J. Mahler, Travis S. Schmidt

Publikováno v: Science of The Total Environment. :1469-1488

Aquatic organisms in streams are exposed to pesticide mixtures that vary in composition over time in response to changes in flow conditions, pesticide inputs to the stream, and pesticide fate and degradation within the stream. To characterize mixture

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f090426a4d346d9bb1788654c751a32a
https://doi.org/10.1016/j.scitotenv.2017.06.156

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Multi-region assessment of chemical mixture exposures and predicted cumulative effects in USA wadeable urban/agriculture-gradient streams

Autor: Celeste A. Journey, Barbara J. Mahler, Peter C. Van Metre, Sara E. Breitmeyer, Lisa H. Nowell, Daren M. Carlisle, Kelly L. Smalling, Paul M. Bradley, Sharon L. Qi, Daniel T. Button, Bradley J. Huffman, Kristin M. Romanok, Ian R. Waite

Publikováno v: Science of The Total Environment. 773:145062

Chemical-contaminant mixtures are widely reported in large stream reaches in urban/agriculture-developed watersheds, but mixture compositions and aggregate biological effects are less well understood in corresponding smaller headwaters, which compris

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::343b24433e6403513e1f5dbd53adc808
https://doi.org/10.1016/j.scitotenv.2021.145062

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Legacy and Current-Use Contaminants in Sediments Alter Macroinvertebrate Communities in Southeastern US Streams

Autor: Peter C. Van Metre, Nile E. Kemble, Lisa H. Nowell, Patrick W. Moran, Barbara J. Mahler, Ian R. Waite

Publikováno v: Environmental toxicology and chemistryREFERENCES. 39(6)

Sediment contamination of freshwater streams in urban areas is a recognized and growing concern. As a part of a comprehensive regional stream-quality assessment, stream-bed sediment was sampled from streams spanning a gradient of urban intensity in t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8269ef686855736f0af33d5061c5864d
https://pubmed.ncbi.nlm.nih.gov/32128866

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