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Filters Contacts (Less) Evan T. Dailey U.S. Geological Survey Pacific Coastal and Marine Science Center U.S. Geological Survey - ScienceBase Alyssa Rosemartin Charles B. Yackulic Charles Yackulic Natural Hazards South Central CASC Terence Arundel U.S. Geological Survey - ScienceBase View Results as: JSON ATOM CSV

Full annual cycle bioenergetics model of migration applied to Galapagos tortoises—Model This code was created to run a bioenergetics-based model of movement for Galapagos tortoises. It calculates energetic surplus or deficit at a daily time scale based on inputted temperature (6 times a day) and NDVI value (a single value per days), as well as the mass of an individual. It then uses dynamic programming to determine the optimal timing of movement between two foraging habitats, given time-series of NDVI in each habitat, and temperatures in both habitats and in a transition zone between habitats. The model relies on a variety of empirically derived relationships, including allometric relationships, derived for different groups of organisms (i.e., some relationships are based on analyses across multiples... Categories: Software; Types: Citation; Tags: Bioenergetics-based model, Daily time scale, Dynamic programming, Ecuador, Energetic deficit, All tags... Energetic surplus, Espanola Island, Galapagos Archipelago, Galapagos Islands, Model of movement, NDVI values, Normalized difference vegetation index values, Santa Cruz Island, Temperature, migratory movement, Fewer tags ViTexOCR; A script to extract text overlays from digital video The ViTexOCR script presents a new method for extracting navigation data from videos with text overlays using optical character recognition (OCR) software. Over the past few decades, it was common for videos recorded during surveys to be overlaid with real-time geographic positioning satellite chyrons including latitude, longitude, date and time, as well as other ancillary data (such as speed, heading, or user input identifying fields). Embedding these data into videos provides them with utility and accuracy, but using the location data for other purposes, such as analysis in a geographic information system, is not possible when only available on the video display. Extracting the text data from imagery using software... Categories: Software; Types: Citation, Downloadable; Tags: CMGP, Coastal and Marine Geology Program, PCMSC, Pacific Coastal and Marine Science Center, Remote Sensing, All tags... U.S. Geological Survey, USGS, computer science, scientific software, software development, Fewer tags Time to Restore: Phenology Calendars Time to Restore is a SC Climate Adaptation Science Center-funded project aimed at better understanding how the plants that pollinators depend on are responding to climate change. Project results will ultimately help shape species selection for restoration. For more information see www.usanpn.org/TimetoRestore. The phenology calendars depict annual patterns of phenological activity, including intensity peak curves, displayed in a chart at the site or regional level. Categories: Publication, Software; Types: Citation