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CO State University - Natural Resource Ecology Lab - CO River Basin - Tamarix - 2014 and 2017

Citation

Evangelista P (2023). CO State University - Natural Resource Ecology Lab - CO River Basin - Tamarix - 2014 and 2017. Version 1.4. United States Geological Survey. Occurrence dataset https://doi.org/10.15468/yd88kz accessed via GBIF.org on 2025-05-23.

Description

Tamarisk occurrence records in the Colorado River Basin.

Sampling Description

Study Extent

Data were restricted to the Colorado River Basin extent. Data were collected in select tributaries of the Colorado River located in Arizona, California, Colorado, Nevada, New Mexico, and Utah. They were collected during fall 2014 and summer 2017.

Sampling

The 2014 data were collected from generated points using stratified random sampling with locations placed a minimum distance of 30 meters between them. A 7.32 meters radius circular plot was established at each of these locations where all vegetation was identified and the percent cover of each species was cataloged. The 2017 data were collected using high-resolution imagery on a digital collection interface along the Animas, Colorado, Dolores, Escalante, Fremont, Gila, Paria, San Juan, San Miguel, San Pedro, San Rafael, Verde, Virgin, Little Colorado, and Santa Clara Rivers and McElmo Creek. Most of the sampling was done from vehicles, so determination of dominance was based on ocular estimates from a distance. Dominance of data collected was defined as occupying greater than 50% of the canopy within a roughly 7 m radius circle. This plot size was selected based on its use across a broad range of agencies, and its utility in training models fit with remotely sensed imagery.

Quality Control

To eliminate some errors/bias from spatial autocorrelation, points were generated within a 30 meters (one Landsat pixel) minimum distance from each other. All vegetation types were identified and percent cover of each type was recorded in detail within each plot.

Method steps

  1. [step description text]

Additional info

This work is licensed under a Creative Commons CCZero 1.0 License http://creativecommons.org/publicdomain/zero/1.0/legalcode.

Taxonomic Coverages

  1. Tamarix
    common name: salt cedar rank: genus

Geographic Coverages

Select U.S. tributaries to the Colorado Rivier.

Bibliographic Citations

Contacts

Paul Evangelista
originator
position: Research scientist
Natural Resource Ecology Laboratory
1499 Campus Delivery
Fort Collins
80524-1499
Colorado
US
Telephone: 19704912302
email: paul.evangelista@colostate.edu
homepage: http://www.nrel.colostate.edu/investigator/paul-evangelista-homepage/
Paul Evangelista
metadata author
position: Research scientist
Natural Resource Ecology Laboratory
1499 Campus Delivery
Fort Collins
80524-1499
Colorado
US
Telephone: 19704912302
email: paul.evangelista@colostate.edu
homepage: http://www.nrel.colostate.edu/investigator/paul-evangelista-homepage/
Catherine Jarnevich
distributor
United States Geological Survey
2150 Centre Avenue Bldg C
Fort Collins
80526
Colorado
US
Telephone: 9702269439
email: jarnevichc@usgs.gov
homepage: https://www.usgs.gov/staff-profiles/catherine-jarnevich?qt-staff_profile_science_products=0#qt-staff_profile_science_products
Annie Simpson
publisher
position: biologist and information scientist
U.S. Geological Survey
12201 Sunrise Valley Dr, MS 302
Reston
20192
Virginia
US
Telephone: +1 703 648 4281
email: asimpson@usgs.gov
Paul Evangelista
administrative point of contact
position: Research scientist
Natural Resource Ecology Laboratory
1499 Campus Delivery
Fort Collins
80524-1499
Colorado
US
Telephone: 19704912302
email: paul.evangelista@colostate.edu
homepage: http://www.nrel.colostate.edu/investigator/paul-evangelista-homepage/
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