Southwest Biological Science Center

Data and Tools

Filter Total Items: 236
Date published: January 1, 2018

County Livestock 2012 Colorado Plateau

County livestock data (sheep and cattle totals) from county census data (NASS, 2012). NASS [National Agricultural Statistics Service]. 2012. Census of agriculture. U.S. Department of Agriculture, Washington D.C., USA.

Date published: January 1, 2018

The influence of water temperature on salmonid recruitment and adult size in tailwaters across western North America—Data

These data were used to examine drivers behind changes in water temperature downriver of dams across the western U.S. from 1995-2015 and the influence of such changes on rainbow trout recruitment and rainbow and brown trout adult length. First, we linked reservoir storage capacity and dam size to the warmest monthly water temperature per water year (WY) to assess the influence of low storage...

Date published: January 1, 2018

Humpback Chub (Gila cypha) and Rainbow Trout (Oncorhynchus mykiss) Joint Mark-Recapture Data and Model, Colorado River, Arizona

These data were compiled for a joint mark-recapture analysis of humpback chub and rainbow trout and include capture histories for both species, as well as environmental covariates associated with monthly time steps used to measure survival and growth and environmental covariates used to predict capture probability during each sampling trip. This worksheet also include parameter estimates and...

Date published: January 1, 2018

Undiscovered Continuous Gas Colorado Plateau

This dataset is based on U.S. Geological Survey (USGS) resource assessments for “undiscovered” gas resources, which are resources that have not yet been extensively proven by drilling (USGS 2014). Individual resource assessments describe the amount of petroleum resources in units with similar geologic features. We focused on the amount of undiscovered continuous gas beca

Date published: January 1, 2018

Vegetation and Soils Data from Grazed and Ungrazed Watersheds in the Badger Wash Study Area, Colorado, USA

In 2004 U.S. Geological Survey biologists recorded vegetation and biological soil crust (BSC) cover by species as well as measured soil stability and compaction data along 85 transects at the Badger Wash study area, approximately 10 miles northwest of Mack in western Colorado. Soil samples were collected and processed for chemistry and texture. Using analysis of variance and nonmetric multi...

Date published: November 27, 2017

DATA RELEASE - Ground-dwelling arthropod composition, Colorado River, Grand Canyon, 2009—Data

These data were compiled from pitfall traps deployed at three sites, along a 25 kilometers (km) stretch of the Colorado River, immediately downstream of Glen Canyon Dam, in Glen Canyon National Recreation Area. Each site had both pre and post-dam riparian habitats present. The purpose of the sampling was to determine if arthropod abundance, diversity and feeding guilds differed between...

Date published: October 18, 2017

DATA RELEASE - Riparian Vegetation and Environmental Variables, Colorado River, 2014—Data

These data consist of species relative cover; percent cover of dead plant material, soil and rock; and a variety of broad- and local- scale environmental variables. These data relate to sample sites along the Colorado River through Grand Canyon between Lees Ferry and river mile 245. Sample sites were distributed among three geomorphic features: channel margins, debris fans, and sandbars.

Date published: August 10, 2017

DATA RELEASE - Water Classification of The Colorado River Corridor, Grand Canyon, Arizona, 2013—Data

These data are classified maps of water in the Colorado River at a discharge of approximately 227 meters squared/second in Grand Canyon from Glen Canyon Dam to Pearce Ferry in Arizona. The data are derived from interpretation of multispectral high resolution airborne imagery that was acquired in May 2013.

Date published: August 10, 2017

DATA RELEASE - Riparian Vegetation Classification of the Colorado River Corridor, Grand Canyon, Arizona, 2013—Data

These data are classification maps of total riparian vegetation along the Colorado River in Grand Canyon from Glen Canyon Dam to Pearce Ferry in Arizona, and are derived from interpretation of multispectral high resolution airborne imagery acquired in May 2013.

Date published: July 25, 2017

DATA RELEASE - Southwest Exotic Mapping Program (SWEMP) Database, 2007

The Southwest Exotic Plant Mapping Program (SWEMP) is a collaborative effort to compile and distribute regional data on the occurrence of non-native invasive plants in the southwestern U.S. The database represents the known sites of non-native invasive plant infestations within AZ and NM, and adjacent portions of CA, CO, NV and UT. These data were collected from 1911to 2006.

Date published: July 6, 2017

DATA RELEASE - Bioelectrical Impedance Analysis for an Endangered Desert Fish

These data were used to examine the effectiveness of a non-lethal tool (Bioelectrical Impedance Analysis) to estimate the physiological condition of endangered and threatened fishes in the Colorado River Basin. Humpback chub, bonytail, and roundtail Chub were subjected to different feeding trials to elicit a response in physiological condition.

Date published: June 22, 2017

DATA RELEASE - Desert Tortoise Reproductive Ecology and Precipitation, Mojave and Sonoran Deserts

Estimated precipitation data were compiled from 1995-2013 for sites near Palm Springs, CA and at Sugarloaf Mountain in the Tonto National Forest of AZ. We were interested in data for winter (October-March) and summer precipitation (June-September). These two periods are important for desert tortoise ecology since they trigger germination of food plants in the spring and in the summer.