Southwest Biological Science Center

Data and Tools

Filter Total Items: 153
Date published: January 1, 2018

Mine density 2014, Colorado Plateau

Mine density at 10 km2 scale calculated with records from the Mineral Resources Data System (USGS 2011). Records are from pre-Hispanic conquest through 2014. USGS [U.S. Geological Survey]. 2011. Mineral Resources On-Line Spatial Data: Mineral Resources Data System (MRDS). https://mrdata.usgs.gov/mrds/. Department of the Interior, Reston, Virginia,...

Date published: January 1, 2018

Sand classifications along the Colorado River in Grand Canyon derived from 2002, 2009, and 2013 high-resolution multispectral airborne imagery

These data are remote sensing image-based classification maps of unvegetated river-derived sand along the Colorado River. One map is based on imagery acquired in May 2013 and is a classification of sand located above the wetted river channel in the imagery which was acquired at the approximate contemporary low-flow river discharge of 8,000 cubic feet per second (227 cubic meters per second)...

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

National Park Service Visitors 2014 Colorado Plateau

Annual visitor records were downloaded for each NPS unit within the study area (Visitor Use Statistics, NPS 2015). NPS [National Park Service]. 2015. NPS Stats: National Park Service visitor use statistics. National Park Service, Department of Agriculture, Washington D.C., USA.

Date published: January 1, 2018

Occurrence records and vegetation type data used for species distribution models in the western United States

These data are species distribution information assembled for assessing the impacts of land-use barriers, facilitative interactions with other species, and loss of long-distance animal dispersal on predicted species range patterns for four common species in pinyon-juniper woodlands in the western United States. The layers in the data release are initial distribution records of two kinds: point...

Date published: January 1, 2018

Projected Change in Aridity Index from 2016-2075 for the Colorado Plateau

Future annual aridity index (AI, precipitation divided by potential evapotranspiration [PET]) was calculated from monthly temperature and precipitation data extracted from 10 General Circulation Models from the Coupled-Model Intercomparison Project, Phase 5 (CMIP5) downscaled to 1/8° spatial resolution (Maurer et al. 2007, Bureau of Reclamation 2013). The models were selected for...

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Field Data

The Mojave Vegetation field data were collected to provide context for the classification of the Central Mojave Desert into various vegetation classes. The field data consist of five CSV tables, recovered from their original Microsoft Access format, that together describe the vegetative, environmental and geomorphic properties of the Central Mojave Desert at the time of collection, 1997-1999....

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

Forest Service Visits 2014 Colorado Plateau

We calculated the intensity of recreation visitation in 2014 based on Forest Service (FS) visits reported in the National Visitor Use Monitoring System at the level of a National Forest (English et. al., 2002). Recreation use on FS lands is tracked at five-year intervals (2010–2014), therefore these data represent a rough estimate of potential 2014 visits. English, D. B. K., S. M....

Date published: January 1, 2018

Central Mojave Desert Vegetation Mapping Project, California, 1997-1999: Special Features Points

The Central Mojave Special Features shapefile provides point locations for known or potential places where vegetation alliances or unique stands occurred (from 1997-1999) with less than 5 hectares of spatial extent. These designations were provided separately from the Mojave Vegetation Polygons because the target standard for the polygons was a minimum mapping unit (MMU) of 5 hectares, thus...

Date published: January 1, 2018

Laboratory experiment data—turbidity response to increasing silt and clay concentration

These data were compiled during a laboratory experiment showing the turbidity response to increasing silt and clay concentration. The sediment used for the laboratory experiment was collected in the Grand Canyon study area, from the bank of the Little Colorado River, approximately 1 kilometer upstream from its confluence with the Colorado River. The sediment was passed through a 63 µm...

Date published: January 1, 2018

County Proportion of Cultivated Agriculture 2012 Colorado Plateau

County cultivated agriculture area from county census data (NASS, 2012). NASS [National Agricultural Statistics Service]. 2014. Quick Stats 2.0. U.S. Department of Agriculture, Washington D.C., USA.