U. S. Geological Survey, Fort Collins Science Center

2 items:

Riparian woody stem densities and landscape variables along the South Platte River, Colorado, United States, 2011-2016 This data set includes riparian woody stem counts, stem densities and landscape variables collected at 28 sites along the South Platte River, Colorado, United States from 2011-2016. Riparian woody stem densities were collected in the field during 2011, 2015, and 2016, and include the species Ulmus pumila, Populus deltoides, Salix amygdaloides, Fraxinus pennsylvanica, and Elaeagnus angustifolia. For Ulmus pumila, data are included for total stem density and stem densities of three size classes: saplings, medium, and large trees. Landscape variables at each site include: farmstead density, population density, upland Ulmus pumila density, bridge density, road density, active river channel, floodplain area, upstream... Categories: Data; Tags: Colorado, Ecology, South Platte, South Platte River, USGS Science Data Catalog (SDC), All tags...
Height, live canopy volume and annual ring widths of cottonwood trees along the Yampa and Green rivers in Dinosaur National Monument and Canyonlands National Park, Colorado and Utah We measured the percent live canopy and height of randomly-selected cottonwood trees at three sites: Deerlodge Park on the Yampa River (DLP), Island Park on the upper Green (ILP), and Canyonlands National Park on the lower Green (CAN). From these same trees we took increment cores to understand differences in tree growth in each forest over time. This dataset includes four tabular digital files. The file "cottonwood_characteristics_dlp_ilp_can.csv" includes data on location, age, height, live canopy cover, and fire history. The files "dlp.txt", "ilp.txt", and "can.txt" contain annual tree ring width for trees at DLP, ILP and CAN. Categories: Data; Tags: Aquatic Biology, Botany, Canyonlands National Park, Colorado, Dinosaur National Monument, All tags...

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