Brent R Johnson
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Explore the profile of Brent R Johnson including associated specialties, affiliations and a list of published articles.
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10
Citations
51
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Recent Articles
1.
Fritz K, Kashuba R, Pond G, Christensen J, Alexander L, Washington B, et al.
Freshw Sci
. 2023 Oct;
42(3):247-267.
PMID: 37842168
Streamflow-duration assessment methods (SDAMs) are rapid, indicator-based tools for classifying streamflow duration (e.g., intermittent vs perennial flow) at the reach scale. Indicators are easily assessed stream properties used as surrogates...
2.
Burke R, Fritz K, Johnson B, Price R
Front Water
. 2023 Mar;
4:1-19.
PMID: 36969749
Mountaintop removal coal mining (MTR) has been a major source of landscape change in the Central Appalachians of the United States (US). Changes in stream hydrology, channel geomorphology and water...
3.
Pilgrim E, Smucker N, Wu H, Martinson J, Nietch C, Molina M, et al.
Water (Basel)
. 2022 Oct;
14(15):1-24.
PMID: 36213613
Indicators based on nutrient-biota relationships in streams can inform water quality restoration and protection programs. Bacterial assemblages could be particularly useful indicators of nutrient effects because they are species-rich, important...
4.
Smucker N, Pilgrim E, Wu H, Nietch C, Darling J, Molina M, et al.
Sci Total Environ
. 2022 Apr;
831:154960.
PMID: 35378187
Interest in developing periphytic diatom and bacterial indicators of nutrient effects continues to grow in support of the assessment and management of stream ecosystems and their watersheds. However, temporal variability...
5.
Fritz K, Pond G, Johnson B, Barton C
Ecosphere
. 2020 Aug;
10(3):e02654.
PMID: 32802570
Headwater ephemeral tributaries are interfaces between uplands and downstream waters. Terrestrial coarse particulate organic matter (CPOM) is important in fueling aquatic ecosystems; however, the extent to which ephemeral tributaries are...
6.
Smucker N, Pilgrim E, Nietch C, Darling J, Johnson B
Ecol Appl
. 2020 Jul;
30(8):e02205.
PMID: 32602216
Nutrient pollution from human activities remains a common problem facing stream ecosystems. Identifying ecological responses to phosphorus and nitrogen can inform decisions affecting the protection and management of streams and...
7.
Johnson B, Weaver P, Nietch C, Lazorchak J, Struewing K, Funk D
Environ Toxicol Chem
. 2014 Oct;
34(1):167-72.
PMID: 25307284
Anthropogenic disturbances, including those from developing energy resources, can alter stream chemistry significantly by elevating total dissolved solids. Field studies have indicated that mayflies (Order Ephemeroptera) are particularly sensitive to...
8.
Struewing K, Lazorchak J, Weaver P, Johnson B, Funk D, Buchwalter D
Chemosphere
. 2014 Jun;
139:597-603.
PMID: 24932778
Criteria for establishing water quality standards that are protective for 95% of the native species are generally based upon laboratory toxicity tests. These tests utilize common model organisms that have...
9.
Weaver P, Lazorchak J, Struewing K, DeCelles S, Funk D, Buchwalter D, et al.
Chemosphere
. 2014 Jun;
139:589-96.
PMID: 24894451
Development of methods for assessing exposure and effects of waterborne toxicants on stream invertebrate species is important to elucidate environmentally relevant information. Current protocols for freshwater invertebrate toxicity testing almost...
10.
Walters D, Fritz K, Johnson B, Lazorchak J, McCormick F
Environ Sci Technol
. 2008 May;
42(7):2316-22.
PMID: 18504959
We tested the ability of delta15N-derived trophic position (TP) to predict polychlorinated biphenyl (PCB) concentrations in a historically contaminated stream (Twelvemile Creek, SC). We analyzed sediment, four types of organic...