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Detecting trends in biological attributes is central to many stream monitoring programs; however, understanding how natural variability in environmental factors affects trend results is not well understood. We evaluated the influence of antecedent streamflow and sample timing (covariates) on trend estimates for fish, invertebrate, and diatom taxa richness and biological condition from 2002 to 2012 at 51 sites distributed across the conterminous United States. This data release contains all of the input and output files necessary to reproduce the results presented and discussed in the associated journal article.
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In 1991, the U.S. Geological Survey (USGS) began a study of more than 50 major river basins across the Nation as part of the National Water-Quality Assessment (NAWQA) project of the National Water-Quality Program. One of the major goals of the NAWQA project is to determine how water-quality and ecological conditions change over time. To support that goal, long-term consistent and comparable ecological monitoring has been conducted on streams and rivers throughout the Nation. Fish, invertebrate, and algae data collected as part of the NAWQA program were retrieved from the USGS Aquatic Bioassessment database for use in trend analysis. Ultimately, these data will provide insight into how natural features and human...
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The purpose of this study was to record nearshore current patterns as witnessed and experienced by ocean users living in the greater Hilo area of Hawai'i Island, Hawai'i. This study relied on ocean-expert knowledge gained from place-based first-hand work and lifestyle experience. The ocean-experts were categorized as fisher, paddler, sailor, surfers, or others. The interviews were collected during 2014-2015, with prototype interviews collected in 2009. During the interview the ocean-expert was asked to select the appropriate map scale for their area of expertise (1:5000, 1:20,000, 1:40,000, or 1:100,000) and to describe and draw the nearshore currents. Sixteen of the interviewees visually documented on hard copy...
    map background search result map search result map Qualitatively Observed Nearshore Ocean Currents, 2014-15, Hilo, Hawai'i Ecological community datasets used to evaluate the presence of trends in ecological communities in selected rivers and streams across the United States, 1992-2012 (output) Datasets used to evaluate the effects of antecedent streamflow and sample timing on trend assessments of fish, invertebrate and diatom communities across the United States, 2002-12 (output) Qualitatively Observed Nearshore Ocean Currents, 2014-15, Hilo, Hawai'i Ecological community datasets used to evaluate the presence of trends in ecological communities in selected rivers and streams across the United States, 1992-2012 (output) Datasets used to evaluate the effects of antecedent streamflow and sample timing on trend assessments of fish, invertebrate and diatom communities across the United States, 2002-12 (output)