Filters: Tags: invertebrates (X) > partyWithName: U.S. Geological Survey (X) > Types: Citation (X)

Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Contacts Melissa L. Riskin Robert E. Zuellig Mark D Munn U.S. Geological Survey - ScienceBase U.S. Geological Survey - ScienceBase More... Categories Data (4) Tag Types Theme (5) Place (4) Harvest Set (3) USGS Scientific Topic Keyword (2) Label (1) Tag Schemes None (4) freshwater benthic ecosystems (1) View Results as: JSON ATOM CSV

Ecological community datasets used to evaluate the presence of trends in ecological communities in selected rivers and streams across the United States, 1992-2012 (input) 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... Categories: Data; Types: Citation; Tags: United States, aquatic, biology, diatoms, ecology, All tags... fish, invertebrates, river, stream, trend, usgsnawqaswtrends, wadeable, Fewer tags The quality of our Nation’s water—Understanding the influence of nutrients on stream ecosystems in agricultural landscapes—supplemental data In the contiguous United States there are approximately 5 million kilometers of streams and rivers, which contain a diversity of aquatic species including microbes, aquatic vegetation (algae and plants), invertebrates, and fish, all of which play key roles in structuring the food web that sustains aquatic life, wildlife, and in some cases humans. Over the last 50 years, human actions have profoundly altered the natural input and cycling of nutrients (nitrogen and phosphorus) through the environment and greatly increased the amount of nutrients transported to our streams, rivers, and estuaries. Although nutrients are essential for a healthy aquatic ecosystem, excess nutrients can affect aquatic and human health.... Categories: Data; Types: Citation; Tags: USGS Science Data Catalog (SDC), United States of America, Water Quality, agriculture, algae, All tags... invertebrates, monitoring, streams, Fewer tags Mechanisms of aquatic species invasions across the South Atlantic Landscape Conservation Cooperative region The Nonindigenous Aquatic Species Database (NAS) information resource is an established central repository for spatially referenced biogeographic accounts of introduced aquatic species. The NAS website provides scientific reports, online/real-time queries, spatial data sets, distribution maps, fact sheets, and general information. Categories: Data; Types: Citation; Tags: AIS, ANS, GIS, USGS Science Data Catalog (SDC), amphibians, All tags... animals, biota, crustaceans, environment, fishes, inlandWaters, introduced species, invasives, invertebrates, mollusks, multiple species, non-indigenous, non-native, nonindigenous, nonnative species, plants, reptiles, vertebrates, Fewer tags 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) 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... Categories: Data; Types: Citation; Tags: United States, aquatic, benthic, biology, communities, All tags... diatoms, ecology, fish, indicator, invertebrates, river, stream, trend assessment, usgsnawqaswtrends, wadeable, Fewer tags Ecological community datasets used to evaluate the presence of trends in ecological communities in selected rivers and streams across the United States, 1992-2012 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... Types: Citation; Tags: Ecology, National Water Quality Program, USGS Science Data Catalog (SDC), United States, aquatic, All tags... biology, diatoms, ecology, fish, invertebrates, river, stream, trend, usgsnawqaswtrends, wadeable, Fewer tags