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Patterns of association and distribution of estuarine-resident common bottlenose dolphins (Tursiops truncatus) in North Carolina, USA from Jan 8,2018 to Jan 26, 2018

Published by Southeast Fisheries Science Center | National Oceanic and Atmospheric Administration, Department of Commerce | Metadata Last Checked: January 27, 2026 | Last Modified: 2022-01-01T00:00:00.000+00:00
The NOAA Southeast Fisheries Science Center conducted surveys within the southern North Carolina estuarine system from 2018-01-08 to 2018-01-26 to provide an updated estimate of abundance for the Southern North Carolina Estuarine System Stock (SNCESS) of common bottlenose dolphins (Tursiops truncatus) using photographic-identification capture-mark-recapture (photo-ID) techniques. The surveys were strategically planned for winter when little overlap in distribution with the Northern North Carolina Estuarine System Stock (NNCESS) or coastal migratory stocks of bottlenose dolphins was expected. Because the sighting histories of individual dolphins have been an important tool for identifying or confirming stock membership, we also compared dolphins that were photo-identified during the 2018 surveys to dolphins that were included in a long-term photo-ID catalog dating back to 1995-07-10. Using the 2018 photographs and the long-term photo-ID catalog, we also evaluated the use of differences in Xenobalanus globicipitis infestation captured in photographs among individuals and groups as support for stock definition. This dataset contains the spatiotemporal sighting histories, photographs, observations of Xenobalanus globicipitis presence/absence, and environmental data for common bottlenose dolphin groups observed during the 2018 surveys. Data for individual dolphins observed during the 2018 surveys that were previously included in the long-term photo-ID catalog were provided as a subset with corresponding photographic matches. The sighting history and photographs of individuals matching from the long-term catalog are included with the exception of those dates indicated as capture events, as such photographs were not digitized.

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DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NESDIS/NODC > National Oceanographic Data Center, NESDIS, NOAA, U.S. Department of Commerce DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce EARTH SCIENCE > BIOLOGICAL CLASSIFICATION EARTH SCIENCE > BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > MAMMALS > CETACEANS EARTH SCIENCE > OCEANS > BATHYMETRY/SEAFLOOR TOPOGRAPHY > WATER DEPTH EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE EARTH SCIENCE > OCEANS > OCEAN TEMPERATURE > SEA SURFACE TEMPERATURE EARTH SCIENCE > OCEANS > OCEAN WAVES > SEA STATE EARTH SCIENCE > OCEANS > SALINITY/DENSITY > OCEAN SALINITY > OCEAN SURFACE SALINITY Tursiops truncatus Xenobalanus globicipitis CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > NORTH CAROLINA OCEAN > ATLANTIC OCEAN > NORTH ATLANTIC OCEAN CAMERAS GPS RECEIVERS > GPS RECEIVERS VISUAL OBSERVATIONS > VISUAL OBSERVATIONS 0254384 254384 779-1633 ANIMALS - GROUP - NUMBER IN GROUP BIOLOGICAL DATA LATITUDE LONGITUDE MARINE MAMMALS MARINE SPECIES INVENTORY SALINITY SEA STATE SEA SURFACE TEMPERATURE cetacean species abundance water depth in situ survey - biological visual estimate visual observation GPS Photo-Identification Techniques YSI - handheld multi-parameter instrument camera laboratory analysis photograph visual analysis visual estimate visual observation SOCPROG abundance bottlenose dolphin mark-recapture photo-identification social network social structure stock structure 2018 Garmin GPSMAP 942xs Garmin GT21-TM Transom Mounted transducer Garmin GT23M-TM transom mounted transducer Boats DOC/NOAA/NMFS/SEFSC > Southeast Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce Protected Resources Marine Mammals (Beaufort)

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