Western Ecological Research Center

Data and Tools

Below, you can find our stand alone data releases. For contemporary articles and their associated data, please visit our publications tab. We include tools that were developed to streamline analysis using different mediums. For further information, please contact authors.

Climate Distance Mapper

Climate Distance Mapper

Climate Distance Mapper is a spatial decision-support tool designed to help land managers match seed sources with restoration sites. Plant populations are commonly adapted to local climate gradients and frequently exhibit a home-site advantage.

web application

Annual California sea otter stranding data

Annual California sea otter stranding data

The California Sea Otter Stranding Network is part of the USGS effort to monitor southern sea otters (Enhydra lutris nereis) and provide data to the U.S. Fish and Wildlife Service. 

Filter Total Items: 253
Date published: May 28, 2020

Nest data for white-faced Ibis in Bear River Migratory Bird Refuge, Great Salt Lake, Utah in summer 2012

Nest monitoring data of white-faced ibis. Data were collected at seven day intervals and provide information on success and failure of the nest during that interval. Summary vegetation and habitat data were also collected at the nest.

Date published: May 28, 2020

Vegetation type conversion in chaparral in San Diego County, California, USA between 1953 and 2016

This dataset contains data pertaining to ground surface cover in a 30 meter radius around a random selection of points within San Diego County, California. These data were obtained from aerial imagery for the years 1953 and 2016 and were used to assess changes in cover type over time.

Date published: May 27, 2020

Empirical and provisional seed transfer zones for the Mojave Desert and surrounding regions

Empirical evidence that local adaptation and home-site advantages are frequent across plant taxa has increased recognition that local adaptation plays a fundamental role in shaping plant responses to seed transfer (i.e., when plant materials are introduced to a site during restoration). Use of maladapted plant materials can lead to poor project outcomes if propagules exhibit poor germinatio...

Date published: April 29, 2020

Mercury and selenium concentrations in bird eggs at Great Salt Lake, Utah

These metadata provide data used to examine mercury and selenium concentrations in eggs of birds breeding in wetlands of the Great Salt Lake ecosystem, Utah, particularly at Bear River Migratory Bird Refuge. Eggs were salvaged during 2010 - 2012 and include 33 species of birds. These data support the following publication: Ackerman, JT, MP Herzog, CA Hartman, J Isanhart, G Herr

Date published: March 2, 2020

Data maps of predicted raven density and areas of potential impact to nesting sage-grouse within sagebrush ecosystems of the North American Great Basin

These data represent predicted common raven (Corvus corax) density (ravens/square-km) derived from random forest models given field site unit-specific estimates of raven density that were obtained from hierarchical distance sampling models at 43 field site units within the Great Basin region, USA. Fifteen landscape-level predictors summarizing climate, vegetation, topography and a

Date published: March 2, 2020

Raven impacts within greater sage-grouse concentration areas within the Great Basin region of the United States 2007 - 2016

Predicted common raven (Corvus corax) impacts within greater sage-grouse (Centrocercus urophasianus) concentration areas across the Great Basin, USA, 2007–2016. Predicted impacts were based on a raven density of great than or equal to 0.40 (ravens per square kilometer) which corresponded to below-average survival rates of sage-grouse nests.

Date published: February 21, 2020

Coachella Valley fringe-toed lizard (Uma inornata) capture data (2017 and 2018)

This dataset includes location, field measurements, and descriptions of 330 Uma inornata sampled for the research study entitled “Sampling Across 20 Years (1996–2017) Reveals Loss of Diversity and Genetic Connectivity in the Coachella Valley Fringe-Toed Lizard (Uma inornata)”. Field sampling occurred between March and September of 2017 and between April and Jun

Date published: February 18, 2020

Microsatellite genotypes for desert tortoise (Gopherus agassizii) in Ivanpah Valley (2015-2017)

These data show the multilocus genotypes, gender, and midline carapace length (MCL) for desert tortoises (Gopherus agassizii) sampled in the central portion of the Mojave desert tortoise range.

Date published: February 18, 2020

Incubation recess times for mallard and gadwall hens nesting in Grizzly Island Wildlife Area 2015 - 2017

This dataset describes incubation recess timing for mallard and gadwall hens nesting in Grizzly Island Wildlife Area in breeding seasons 2015-2017. It includes the start time, end time, and duration of recesses.

Date published: February 7, 2020

Tree mortality in blue oak woodlands in Sequoia National Park during extreme drought

These data were collected to quantify oak mortality during the 2014-2017 drought. 30 tenth hectare drought plots were established throughout the blue oak woodland of Sequoia National Park. Information on species, size, and mortality were collected for all standing trees in each plot. In addition, two long-term 2.25 ha plots were established, in which the same data were collected.

Date published: January 10, 2020

Small mammal surveys from Northern San Francisco Bay: 1998-2014

This datasets summarizes small mammal trapping efforts that USGS San Francisco Bay Estuary Field Station has led, co-led, or supervised, to detect and monitor the endangered salt marsh harvest mouse (Reithrodontomys raviventris) in the northern reaches of San Francisco Bay from 1998-2014. As the salt marsh harvest mouse is listed as endangered under the Endangered Species Act, sensiti

Date published: January 1, 2020

Fire caused tree mortality in western US national parks (2018) (ver. 2.0, February 2020)

This data consists of observations of individual trees that were subjected to prescribed fire in western US national parks. Information on individual trees include measurements of tree live/dead status, growth, size, competition, and fire-caused damage. The data also includes estimates of plot-level vapor pressure deficit anomaly before fire. First posted - August 28, 2018 (availabl