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There is a need to understand how alteration of physical processes on the Rio Grande River have impacted aquatic biota and their habitats, and a need to predict potential future effects of climate change on biotic resources in order to prescribe research and management activities that will enhance conservation of aquatic species. We propose a project with the goal of developing monitoring recommendations and identifying research needs for aquatic ecological resources in the Big Bend region of the Rio Grande. This goal will be targeted by synthesizing and analyzing available data and literature for aquatic species in the project region. In particular, we will work to develop time series of abundance and population...
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Album caption and index card: Summit of plateau of Santa Helena looking off to southeast. Canyon of Rio Grande, 1700 feet deep. Terlingua quadrangle, Brewster County, Texas. 1899.
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Data related to mercury concentrations in dragonfly samples from U.S. National Parks collected as part of the Dragonfly Mercury Project (DMP).
Categories: Data; Tags: Acadia National Park, Apostle Islands National Lakeshore, Bear Creek Lake Park, Big Bend National Park, Big Cypress National Park, All tags...
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Mr. Hill's party leaving the canyons of the Rio Grande at Langtry, left to right: James MacMahon boatman, Robert T. Hill, Prentice B. Hill assistant, Shorty Franklin boatman, Henry J. Ware boatman and Serafino Torrez cook. Thus completing the first exploration of the Big Bend portion of the Rio Grande. Valverde County, Texas. October 28, 1899.


map background search result map search result map Burro Mesa. Big Bend National Park, Texas. 1970. Tule Mountain and Burro Mesa. Big Bend National Park, Texas. 1970. Castolon Peak. Big Bend National Park, Texas. 1970. Croton Peak. Big Bend National Park, Texas. 1970. Rio Grande River, Sierra Ponce, Santa Elena Canyon, and Mesa de Anguila. Big Bend National Park, Texas. 1970. Laccolith at Fresno Canyon, north of Lajitas. Big Bend National Park, Texas. 1970. Mariscal Mountain. Big Bend National Park, Texas.1970. Rio Grande River and Sierra San Vicente. Big Bend National Park, Texas. 1970. Burro Mesa. Big Bend National Park, Texas. 1970. Santa Ana Mesa. Big Bend National Park, Texas. 1970. Santa Helena scarp and boca of the Grand Canyon de Santa Helena. Big Bend National Park,Texas. 1899. Mr. Hill's party leaving the canyons of the Rio Grande at Langtry. Valverde County, Texas. 1899. Summit of plateau of Santa Helena. Big Bend National Park, Texas. 1899. Grand Canyon de Santa Helena. Big Bend National Park, Texas. 1899. Carmen Canyon. Big Bend National Park, Texas. 1899. Ecological changes in aquatic communities in the Big Bend reach of the Rio Grande: Synthesis and future monitoring needs Rooney Camp and strata of Sierra San Vincente. Big Bend National Park, Texas. 1970. Daggar Mountain. Big Bend National Park, Texas. 1970. Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (2014-2017) Burro Mesa. Big Bend National Park, Texas. 1970. Tule Mountain and Burro Mesa. Big Bend National Park, Texas. 1970. Castolon Peak. Big Bend National Park, Texas. 1970. Croton Peak. Big Bend National Park, Texas. 1970. Rio Grande River, Sierra Ponce, Santa Elena Canyon, and Mesa de Anguila. Big Bend National Park, Texas. 1970. Laccolith at Fresno Canyon, north of Lajitas. Big Bend National Park, Texas. 1970. Mariscal Mountain. Big Bend National Park, Texas.1970. Rio Grande River and Sierra San Vicente. Big Bend National Park, Texas. 1970. Burro Mesa. Big Bend National Park, Texas. 1970. Santa Ana Mesa. Big Bend National Park, Texas. 1970. Santa Helena scarp and boca of the Grand Canyon de Santa Helena. Big Bend National Park,Texas. 1899. Mr. Hill's party leaving the canyons of the Rio Grande at Langtry. Valverde County, Texas. 1899. Summit of plateau of Santa Helena. Big Bend National Park, Texas. 1899. Grand Canyon de Santa Helena. Big Bend National Park, Texas. 1899. Carmen Canyon. Big Bend National Park, Texas. 1899. Rooney Camp and strata of Sierra San Vincente. Big Bend National Park, Texas. 1970. Daggar Mountain. Big Bend National Park, Texas. 1970. Ecological changes in aquatic communities in the Big Bend reach of the Rio Grande: Synthesis and future monitoring needs Total Mercury Concentrations in Dragonfly Larvae from U.S. National Parks (2014-2017)