Filters: Tags: DRECP (X) > partyWithName: Conservation Biology Institute (X)
195 results (14ms)
Filters
Date Range
Tag Schemes |
This dataset represents current terrestrial intactness values (estimated at the 1km level) within the distribution of Central and South Coastal California Seral Scrub. Terrestrial intactness is high in areas where development is low, vegetation intactness is high, and fragmentation is low. Consequently, this dataset serves as a general* indication of habitat quality within the distribution of this conservation element. Estimates of current terrestrial intactness were generated by an EEMS fuzzy logic model that integrates multiple measures of landscape development and vegetation intactness, including agriculture development (from LANDFIRE EVT v1.1), urban development (from LANDFIRE EVT v1.1 and NLCD Impervious Surfaces),...
CBI's DRECP species distribution model for golden eagle (Aquila chrysaetos) is based on expert knowledge of suitable foraging and nesting habitat. The golden eagle expert model includes foraging vegetation within 10 miles of known nests and within 4 miles of potential nesting areas, i.e. places with high ruggedness (Vector Ruggedness Measure > 0.01; neighborhood size = 270m). Foraging vegetation includes: herbaceous cover between 30% and 100%; shrub cover between 10% and 50%; tree cover between 10% and 40%; herbaceous wetlands, herbaceous semi-dry lands, and herbaceous semi-wet areas, (based on Landfire Existing Vegetation Cover, 2008; 30m resolution). The golden eagle model output was resampled from 30m to 270m...
This dataset shows the modeled distribution for the pallid bat, Antrozous pallidus, within the boundaries of the Desert Renewable Energy Conservation Plan (DRECP). It is based on habitat identified for the DRECP from the DRECP Landcover dataset, which is based primarily on GAP vegetation data and community surveys by the California Department of Fish and Wildlife (CDFW).The pallid bat model output was rasterized by CBI at 270m resolution and generalized using majority filter and boundary clean techniques; areas smaller than 10 pixels were removed from the final product. Â
This dataset represents current terrestrial intactness values (estimated at the 1km level) within the modeled distribution of the Yellow-billed cuckoo (Coccyzus americanus). Terrestrial intactness is high in areas where development is low, vegetation intactness is high, and fragmentation is low. Consequently, this dataset serves as a general* indication of habitat quality within the distribution of this conservation element. Estimates of current terrestrial intactness were generated by an EEMS fuzzy logic model that integrates multiple measures of landscape development and vegetation intactness, including agriculture development (from LANDFIRE EVT v1.1), urban development (from LANDFIRE EVT v1.1 and NLCD Impervious...
This dataset represents current terrestrial intactness values (estimated at the 1km level) within the modeled distribution of the Flat-seeded spurge (Chamaesyce platysperma). Terrestrial intactness is high in areas where development is low, vegetation intactness is high, and fragmentation is low. Consequently, this dataset serves as a general* indication of habitat quality within the distribution of this conservation element. Estimates of current terrestrial intactness were generated by an EEMS fuzzy logic model that integrates multiple measures of landscape development and vegetation intactness, including agriculture development (from LANDFIRE EVT v1.1), urban development (from LANDFIRE EVT v1.1 and NLCD Impervious...
These data are statistical model outputs for Mojave monkeyflower (Mimulus mohavensis ) species distribution, completed by Frank Davisâ Biogeography Lab at UC Santa Barbara. Predictions of habitat occupancy for ~70 species were generated from Maxent models for the CA Energy Commissionâs project âCumulative Biological Impacts Framework for Solar Energy in the CA Desertâ, 500-10-021. Species distribution models were produced at 270 m resolution using a subset of 22 environmental variables. Models were evaluated with 10-fold cross validated AUC scores. Binary layers depicting predicted suitable habitat were derived using the equal training sensitivity and specificity threshold. Mimulus mohavensis, Max Sensitivity...
Habitat suitability model for the Mohave ground squirrel, Xerospermophilus mohavensi , conducted on behalf of the California Energy Commission by the United States Geological Survey, Western Research Ecological Center, Las Vegas Field Station as a project through the California Energy Commission (Contract reference: CEC Agreement 50010027). The USGS used statistical habitat models (MaxEnt, v3.3.3e) with observation data to describe current potential MGS habitat in the context of future utility-scale renewable energy development (USRED) in the Mojave Desert region.Suitable habitat for Mohave ground squirrel under the medium development impact scenario (including anthropogenic and renewable energy influences) was...
Tamarisk Probability Model for the Western United States. Thresholded at 0.6 for use in terrestrial intactness modeling. Extracted to the DRECP study area. New invasions, better field data, and novel spatial modeling techniques often drive the need to revisit previous maps and models of invasive species. Such is the case with the at least 10 species of Tamarix, which are invading riparian systems in the western United States and are expanding their range throughout North America. In 2006, we developed a National Tamarisk Map using a compilation of presence and absence locations with remotely sensed data and statistical modeling techniques. Since the publication of that work, our database of Tamarix distributions...
Areas with high ruggedness (Vector Ruggedness Measure > 0.01; neighborhood size = 270m) used in creating the DRECP golden eagle expert model. The Vector Ruggedness Measure (VRM) was originally derived at 30m resolution, using the 30m NED, and run with a 9x9 (270m) neighborhood size. The resulting VRM dataset was projected to CA Albers Equal Area NAD83 and resampled to 270m resolution to match the DRECP statistical species distribution models. VRM was adapted from a method first proposed by Hobson (1972). See Sappington et al. 2007, for further details. References: Hobson, R.D. 1972. Surface roughness in topography: quantitative approach. Pages 221â245 in R. J. Chorley, editor. Spatial analysis in geomorphology....
These data are updated expert model outputs for Mojave river vole (Microtus californicus mohavensis ) species distribution for DRECP, completed by Dudek. Documentation from Dudek: This is a 1/4-mile buffer on the Mojave River from the Plan Area boundary to approximately Oro Grande which is the known area of occurrences for the species. Where wetland/riparian vegetation abutted and extended beyond the 1/4-mile buffer, these areas were included in the model.
Tags: drecp,
mojave river vole
Coverage of DRECP 12 km buffered study site, clipped from original USGS data "Preliminary integrated geologic map databases for the United States" found at http://pubs.usgs.gov/of/2005/1305/. This digital map is a reformulation of previously published maps, primarily maps of states. The reformulation gives all the maps the same structure and format, allowing them to be combined into regional maps. The associated data tables have information about age and lithology of the map units, also in a standard format.
Mining feature symbols digitized from 1:24000 scale, 7.5 minute USGS topographic quadrangles as scanned by the Stephen P. Teale Data Center (July, 1998).
Layer description from Appendix A of the DRECP Baseline Biology Report: California Geology Units from Jennings 1977 Geologic map of California. (California Division of Mines).These data were provided by Dudek, for full metadata please contact them directly.
These data are statistical model outputs for triple-ribbed milk-vetch (Astragalus tricarinatus) species distribution, completed by CBI. Predictions of habitat occupancy were generated from Maxent models for the DRECP. This species distribution model was produced for a limited extent within the DRECP region, defined as a union of USDA ecoregion subsections with occurrences and 10km buffer of occurrences, at 270 m resolution with 90 detections points obtained March 2013 from CNDDB (California Department of Fish and Wildlife, Biogeographic Data Branch), Consortium of California Herbaria (http://ucjeps.berkeley.edu/consortium/), Â and USFWS Carlsbad Fish & Wildlife Office (http://www.fws.gov/carlsbad/GIS/CFWOGIS.html).The...
DRECP species distribution model output for White-margined beardtongue (Penstemon albomarginatus ).Patrick McIntyre and Kara Moore of UC Davis generated predictions of rare plant habitat occupancy from Maxent models using an approach designed to maximize model ability to identify new occurrences in the field. A three-stage approach was used to build, assess, and finalize distribution models for focal taxa. First, the team built preliminary models at 270 m for each species. Second, field surveys were conducted based on preliminary model predictions. Third, final models were built based on all occurrences, including field data, and assessed for potential biases and model fit. Models were evaluated for their ability...
|
|