Southwest Biological Science Center

Data and Tools

Filter Total Items: 246
Date published: May 13, 2021

Humpback Chub (Gila cypha) capture history data (2009-2017), and code for mark-recapture analysis and stochastic matrix projections, Colorado River and Little Colorado River, Arizona

These data represent capture histories for humpback chub (Gila cypha) that spawn in the Little Colorado River (LCR) from 2009-2017.

Date published: May 7, 2021

Benthic macroinvertebrate tailwater data in the Colorado River Basin, 2013 & 2015

These benthic macroinvertebrate data and associated site characteristics were compiled for the purpose of exploring any relationships between large dams in the Colorado River Basin, their flow management and geographical context, and their associated downstream benthic macroinvertebrate communities.

Date published: May 7, 2021

Plant trait and soil moisture data associated with ontogenetic trait shifts - seedlings display high trait variability during early stages of development

These tabular data were compiled to document how key plant trait values change during plant development, particularly seedling stages, and in relation to soil moisture.

Date published: April 28, 2021

Simulated rangewide big sagebrush regeneration estimates and relationships with abiotic variables as function of soils under historical and future climate projections

These NetCDF data were compiled to investigate how two complementary models can contribute to our understanding of contemporary and future big sagebrush regeneration across the historical and potential future sagebrush region.

Date published: April 22, 2021

Plant genetic structure data from riparian areas within the Grand Canyon region in northern Arizona

These data represent nuclear microsatellite data collected from four riparian plant species that occur in and around Grand Canyon National Park: Populus fremontii (POFR), Salix gooddingii (SAGO), Salix exigua (SAEX), and Prosopis glandulosa (PRGL). These data were collected for population genetic analysis to help inform native plant material development in Grand Canyon National Park.

Date published: April 11, 2021

Astragalus species complex genetic data from southeast Utah (Grand County and San Juan County), USA

These data were compiled to investigate the evolutionary history of Astragalus iselyi, A. sabulosus var. sabulosus, and A. sabulosus var. vehiculus. The data release consists of six text files. One file is a bash script ( for generating simulated genetic data.

Date published: April 11, 2021

Northern tamarisk beetle impact and classification maps, Grand Canyon National Park, Arizona

These data are satellite image-derived, classification maps of tamarisk (Tamarisk spp.) along the Colorado River in Grand Canyon National Park from river km 315 to 363, approximately from Parashant Canyon to Diamond Creek tributaries.

Date published: April 11, 2021

Humpback chub spring and fall capture histories in the Little Colorado River, 2009-2019

These data were compiled to examine rates of skipped migration in adult humpback chub that spawn in the Little Colorado River (LCR). These data include mark-recapture information from the lower 13.56 kilometers of the LCR and from the Colorado River, from river kilometer 105.5-145.7 downstream of Glen Canyon Dam.

Date published: March 12, 2021

Lampropeltis californiae (California Kingsnake) behavior, male combat video, Apache Junction, AZ

These data represent the interaction between two male individuals of California Kingsnakes in Apache Junction, northern Pinal County, Arizona. The interaction was observed, recorded on video, and documented.

Date published: March 9, 2021

Modeled and measured greenhouse gas emissions from Lake Powell and bathymetric analysis of tributary littoral habitat at different water levels

This data release contains model inputs used to estimate surface water greenhouse gas fluxes from two large arid reservoirs, Lake Powell and Lake Mead. The release also contains empirical, spatially explicit water quality and greenhouse gas data from a single field survey conducted in Lake Powell in July of 2017.

Date published: February 18, 2021

Long-term annual aeolian dust deposition data from seven locations in southeastern Utah

These data are annual aeolian dust deposition calculations from vertical deposition at seven locations near the vicinity of Moab, Utah covering the period from 1999 to 2020.

Date published: February 3, 2021

Discharge records and sand extents along the Colorado River between Glen Canyon Dam and Phantom Ranch, Arizona

The data contained in these tables detail the areal extent of exposed sand, in square meters, along the Colorado River between Glen Canyon Dam, Arizona, and Bright Angel Creek, Arizona, within Glen Canyon National Recreation Area and Grand Canyon National Park.