Search Results - "PECK, David V"

Physical habitat in conterminous US streams and rivers, Part 1: Geoclimatic controls and anthropogenic alteration by Kaufmann, Philip R., Hughes, Robert M., Paulsen, Steven G., Peck, David V., Seeliger, Curt W., Weber, Marc H., Mitchell, Richard M.

“…•Developed quantitative indicators for sediment, instream cover and riparian condition.•Modelled geoclimatic & anthropogenic controls on physical habitat from…”
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Physical habitat in conterminous US streams and Rivers, part 2: A quantitative assessment of habitat condition by Kaufmann, Philip R., Hughes, Robert M., Paulsen, Steven G., Peck, David V., Seeliger, Curt W., Kincaid, Tom, Mitchell, Richard M.

“…•National assessment of physical habitat condition based on 1853 probability sites.•Poor conditions exist in 14-24% of US channel length; 4–42% poor in…”
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Genus-level, trait-based multimetric diatom indices for assessing the ecological condition of rivers and streams across the conterminous United States by Riato, Luisa, Hill, Ryan A., Herlihy, Alan T., Peck, David V., Kaufmann, Philip R., Stoddard, John L., Paulsen, Steven G.

“…•Genus-level, trait-based diatom indices were developed for the conterminous U.S.•Diatom indices had strong ability to separate least- from most-disturbed…”
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Patterns in and predictors of stream and river macroinvertebrate genera and fish species richness across the conterminous USA by Hughes, Robert M, Herlihy, Alan T, Comeleo, Randy, Peck, David V, Mitchell, Richard M, Paulsen, Steven G

“…Both native and non-native taxa richness patterns are useful for evaluating areas of greatest conservation concern. To determine those patterns, we analyzed…”
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Continental-Scale Increase in Lake and Stream Phosphorus: Are Oligotrophic Systems Disappearing in the United States? by Stoddard, John L, Van Sickle, John, Herlihy, Alan T, Brahney, Janice, Paulsen, Steven, Peck, David V, Mitchell, Richard, Pollard, Amina I

“…We describe continental-scale increases in lake and stream total phosphorus (TP) concentrations, identified through periodic probability surveys of thousands…”
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The relation of lotic fish and benthic macroinvertebrate condition indices to environmental factors across the conterminous USA by Herlihy, Alan T., Sifneos, Jean C., Hughes, Robert M., Peck, David V., Mitchell, Richard M.

“…•A wide variety of environmental factors were related to condition.•Local site-scale factors explained more variation than watershed-scale factors.•Fish had…”
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Distribution and Characteristics of Blackwater Rivers and Streams of the Contiguous United States by Flotemersch, Joseph E., Blocksom, Karen A., Herlihy, Alan T., Kaufmann, Philip R., Mitchell, Richard M., Peck, David V.

“…Blackwater rivers and streams have stained or tea‐colored water from tannins released by decaying plant matter. Natural conditions in these waters often differ…”
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Sampling efforts for estimating fish species richness in western USA river sites by Hughes, Robert M., Herlihy, Alan T., Peck, David V.

“…Fish species richness is an important indicator of river ecological condition but it is particularly difficult to estimate in large unwadeable rapidly flowing…”
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Correspondence between a recreational fishery index and ecological condition for U.S.A. streams and rivers by Lomnicky, Gregg A., Hughes, Robert M., Peck, David V., Ringold, Paul L.

“…•Developed recreational fishery index (RFI) scores for 1561 USA sites.•RFI and multimetric index (MMI) scores were weakly correlated.•RFI scores were weakly to…”
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Mapping watershed integrity for the conterminous United States by Thornbrugh, Darren J., Leibowitz, Scott G., Hill, Ryan A., Weber, Marc H., Johnson, Zachary C., Olsen, Anthony R., Flotemersch, Joseph E., Stoddard, John L., Peck, David V.

“…•An Index of Watershed Integrity (IWI) was developed for 2.6 million US watersheds.•A related Index of Catchment Integrity was developed based on local…”
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How Might Selenium Moderate the Toxic Effects of Mercury in Stream Fish of the Western U.S.? by Peterson, Spencer A, Ralston, Nicholas V.C, Peck, David V, Sickle, John Van, Robertson, J. David, Spate, Vickie L, Morris, J. Steven

“…The ability of selenium (Se) to moderate mercury (Hg) toxicity is well established in the literature. Mercury exposures that might otherwise produce toxic…”
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A Structured Approach for Developing Indices of Biotic Integrity: Three Examples from Streams and Rivers in the Western USA by Whittier, Thomas R., Hughes, Robert M., Stoddard, John L., Lomnicky, Gregg A., Peck, David V., Herlihy, Alan T.

“…In the late 1990s the Environmental Monitoring and Assessment Program of the U.S. Environmental Protection Agency developed a structured set of tests to…”
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Lakeshore and littoral physical habitat structure in a national lakes assessment by Kaufmann, Philip R., Peck, David V., Paulsen, Steven G., Seeliger, Curt W., Hughes, Robert M., Whittier, Thomas R., Kamman, Neil C.

“…Near-shore physical habitat is crucial for supporting biota and ecological processes in lakes. We used data from a statistical sample of 1101 lakes and…”
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Development and evaluation of a Macroinvertebrate Biotic Integrity Index (MBII) for regionally assessing Mid-Atlantic Highlands streams by KLEMM, Donald J, BLOCKSOM, Karen A, DAVIS, Wayne S, FULK, Florence A, HERLIHY, Alan T, HUGHES, Robert M, KAUFMANN, Philip R, PECK, David V, STODDARD, John L, THOENY, William T, GRIFFITH, Michael B

“…The Macroinvertebrate Biotic Integrity Index (MBII) was developed from data collected at 574 wadeable stream reaches in the Mid-Atlantic Highlands region…”
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Fish and Amphibian Tolerance Values and an Assemblage Tolerance Index for Streams and Rivers in the Western USA by Whittier, Thomas R., Hughes, Robert M., Lomnicky, Gregg A., Peck, David V.

“…Aquatic species' tolerances to overall human disturbance are key components of biological assessments of aquatic ecosystems. These tolerance classifications…”
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Distribution of Nonnative Aquatic Vertebrates in Western U.S. Streams and Rivers by Lomnicky, Gregg A., Whittier, Thomas R., Hughes, Robert M., Peck, David V.

“…Nonnative aquatic vertebrates have been widely introduced across the western United States. We analyzed data from the Environmental Monitoring and Assessment…”
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Development of an Index of Biotic Integrity for the Mid‐Atlantic Highlands Region by McCormick, Frank H., Hughes, Robert M., Kaufmann, Philip R., Peck, David V., Stoddard, John L., Herlihy, Alan T.

“…From 1993 to 1996, fish assemblage data were collected from 309 wadeable streams in the U.S. Mid‐Atlantic Highlands region as part of the U.S. Environmental…”
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Evaluation of an Index of Biotic Integrity Approach Used to Assess Biological Condition in Western U.S. Streams and Rivers at Varying Spatial Scales by Meador, Michael R., Whittier, Thomas R., Goldstein, Robert M., Hughes, Robert M., Peck, David V.

“…Consistent assessments of biological condition are needed across multiple ecoregions to provide a greater understanding of the spatial extent of environmental…”
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Surface Area Estimates of Streams and Rivers Occupied by Nonnative Fish and Amphibians in the Western USA by Whittier, Thomas R., Peck, David V.

“…Statistically robust, broad‐scale measures of the portion of an aquatic resource (e.g., a stream and river network) occupied by nonnative fish and amphibian…”
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Mercury Concentration in Frozen Whole-Fish Homogenates Is Insensitive to Holding Time by Peterson, Spencer A, Peck, David V, Van Sickle, John, Hughes, Robert M

“…Current recommended holding times for the analysis of total mercury (Hg) in fish tissue ranges from 28 to 180 days. In 2006, we evaluated the effect of an…”
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