Michael P Chenaille

Percent canopy cover of conifers within Nevada and northeastern California sage-grouse habitat (2017)

This raster dataset depicts percent canopy cover derived from 1-m conifer classifications when aggregated to 30-m cells. Conifer features were classified from 2010, 2012, and 2013 NAIP Digital Ortho Quarter Quads (DOQQ) using the Feature Analyst 5.0 extension for ArcGIS 10.1. Tiles were organized and grouped by Nevada Department of Wildlife Population Management Unit (PMU) locations, plus a 10 km area beyond the PMU extent. Analysts visually identified conifers in the imagery using false color infrared settings and digitized multiple trees per tile as training locations for classification. After performing hierarchical learning and clutter removal with Feature Analyst to remove non-conifer features on output shapefiles,...

Types: Citation, Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Biota, Conifers, Environment, Great Basin, Land cover, All tags... Trees, biota, environment, Fewer tags

Composite Habitat Suitability Index Raster Dataset

This raster represents a continuous surface of sage-grouse habitat suitability index (HSI) values for northeastern California. HSIs were calculated for spring (mid-March to June), summer (July to mid-October), and winter (November to March) sage-grouse seasons, and then multiplied together to create this composite dataset.

Categories: Data; Types: Downloadable, GeoTIFF, Map Service, Raster; Tags: California, Great Basin, Greater Sage-Grouse, Habitat, Nevada, All tags... North America, Sagebrush Ecosystem Council, United States, biota, boundaries, environment, Fewer tags

We used a hierarchical Bayesian modeling framework to estimate resource selection functions and survival for early and late brood-rearing stages of sage-grouse in relation to a broad suite of habitat characteristics evaluated at multiple spatial scales within the Great Basin from 2009 to 2019. Sage-grouse selected for greater perennial grass cover, higher relative elevations, and areas closer to springs and wet meadows during both early and late brood-rearing. Terrain characteristics, including heat load and aspect, were important in survival models, as was variation in shrub height. We also found strong evidence for higher survival for both early and late broods within previously burned areas, but survival within...

Tags: Ecology, Geography, Great Basin, USGS Science Data Catalog (SDC), Wildlife Biology, All tags... adaptive habitat selection, chick survival, ecological trap, ecosystems, fires, habitat functional response, human impacts, maladaptive habitat selection, native species, resource selection function, shrubland ecosystems, western United States, Fewer tags

Ranked Habitat Classes for Sage-Grouse Brood-Rearing Productivity, Nevada and California

Ranked habitat classes for sage-grouse brood-rearing productivity at each 90 m pixel. Habitat classes represent areas where high brood selection and high brood survival intersected, whereas the lowest ranks represent areas where high brood habitat selection intersected with the low brood survival. Hierarchical models of brood selection and survival were fit to landscape covariates within a Bayesian modeling framework in Nevada and California from 2009 - 2017 to develop spatially explicit information about brood habitat selection and survival.

Tags: Great Basin, adaptive habitat selection, chick survival, ecological trap, ecosystems, All tags... fires, habitat functional response, human impacts, maladaptive habitat selection, native species, resource selection function, shrubland ecosystems, western United States, Fewer tags

Prediction of raven occurrence intersected with high impact areas for sage-grouse populations in the Great Basin, 2007-2016 (Fig. 5A)

Predictions of raven occurrence intersected with high impact areas for sage-grouse populations. The index highlights regions where elevated raven occurrence is likely to impact breeding sage-grouse.

Categories: Data; Types: ArcGIS REST Map Service, ArcGIS Service Definition, Downloadable, Map Service; Tags: Great Basin, biota, geographic information systems (GIS), geospatial analysis, habitat alteration, All tags... human impacts, occupancy model, predator-prey interactions, sensitive prey, shrublands, wildlife, Fewer tags