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Location Folder Show Tree ROOT _ScienceBase Catalog __USGS Western Ecological Research Center Annual California Sea Otter Census Annual California sea otter stranding data Atlas of Breeding Seabirds of the Main Hawaiian Islands Effects of Sea-Level Rise and Extreme Storms on California Coastal Habitats: Part 2 LEAN-corrected Digital Elevation Models in Tidal Marshes More... Filters Date Range Past year (0) Past month (0) Past week (0) Past day (0) Custom range... To   Search Extensions USGS Collection (1) Types Map Service (1) OGC WFS Layer (1) OGC WMS Layer (1) OGC WMS Service (1) Contacts Karen M Thorne Ecosystems Kevin J Buffington Josh Adams Emily (Emma) C. Kelsey More... Categories Collection (1) Tag Types Theme (1) Place (1) Tag Schemes USGS Thesaurus (1) Common geographic areas (1) ISO 19115 Topic Category (1) View Results as: JSON ATOM CSV Browse Folder

Atlas of Breeding Seabirds of the Main Hawaiian Islands The U.S. Geological Survey, Western Ecological Research Center (USGS-WERC), with support from the Bureau of Ocean Energy Management (BOEM), is working with many partners to generate an Atlas of Breeding Seabirds of the Main Hawaiian Islands. This atlas will provide benchmarks to measure future changes in seabird population sizes and breeding distribution throughout Hawai‘i and will also assist efforts to evaluate threats to Hawaiian seabirds both on land and at sea. Ultimately, species- and colony-specific data for main Hawaiian Island seabirds on land and at sea will inform evaluations of potential risk and options for mitigation strategies for effects of offshore energy infrastructure on seabirds. This ScienceBase... Types: Map Service, OGC WFS Layer, OGC WMS Layer, OGC WMS Service; Tags: Kauai, USGS-EMA-LOW-SB SMC: Seabirds, aerial photography, animal and plant census, biota, All tags... plot sampling, Fewer tags Western Ecological Research Center Approved Data Releases This public folder contains approved data release products produced by the USGS Western Ecologial Research Center. This folder also includes metadata that will be harvested and displayed by the USGS Science Data Catalog ( http://data.usgs.gov/datacatalog) to improve access and discovery. Categories: Collection LEAN-corrected Digital Elevation Models in Tidal Marshes Airborne light detection and ranging (lidar) is a valuable tool for collecting large amounts of elevation data across large areas; however, the limited ability to penetrate dense vegetation with lidar hinders its usefulness for measuring tidal marsh platforms. Methods to correct lidar elevation data are available, but a reliable method that requires limited field work and maintains spatial resolution is lacking. We present a novel method, the Lidar Elevation Adjustment with NDVI (LEAN), to correct lidar digital elevation models (DEMs) with vegetation indices from readily available multispectral airborne imagery (NAIP) and RTK-GPS surveys. By using available imagery and with minimal field surveys, we showed that...