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OAS accession Detail for 0254384, meta_version: 3. Current meta_version is: 14
| accessions_id: |
0254384 | archive
|
| Title: |
Patterns of association and distribution of estuarine-resident common bottlenose dolphins (Tursiops truncatus) with photographs and environmental parameters in North Carolina, USA from Jan 8,2018 to Jan 26, 2018 (NCEI Accession 0254384) |
| Abstract: |
We undertook a survey within the southern NC estuarine system from January 8, 2016 to January 26, 2018 to provide an updated estimate of abundance for the SNCESS (Southern North Carolina Estuarine System Stock) using capture-mark-recapture (CMR) techniques. The survey was strategically planned for winter when little overlap in distribution with the NNCESS (Northern North Carolina Estuarine System Stock) or coastal migratory stocks was expected. Because sighting histories have been an important tool for identifying or confirming stock membership, we also compared dolphins that were photo-identified during the survey to dolphins that were included in a long-term photo-identification (ID) catalog. Given unexpected results, using the long-term catalog we conducted a social network analysis as a means of identifying social groups without using a priori spatiotemporal strata to see whether associations among individuals were consistent with current stock designations. Using the photographs from this Jan 8, 2018 to Jan 26,2018 survey and the long-term photo-IDcatalog), we also evaluated the use of differences in Xenobalanus globicipitis infestation among individuals and groups as support for stock definition. Furthermore, as sea surface temperatures during the survey were lower than average and the number of groups and dolphins sighted were higher than expected, we examined whether anomalously low water temperatures may have resulted in movement of NNCESS dolphins into more southern waters during the survey. An estimate of abundance was obtained for the survey area although the interpretation was confounded by sighting histories and association patterns that were inconsistent with the currently designated stock structure. Our findings suggest the need to reevaluate stock structure of estuarine-resident bottlenose dolphins in North Carolina, which may be facilitated by use of long-term association patterns |
| Date received: |
20220623 |
| Start date: |
20180108 |
| End date: |
20180126 |
| Seanames: |
North Atlantic Ocean |
| West boundary: |
-79.01505 |
| East boundary: |
-77.33248 |
| North boundary: |
34.5658 |
| South boundary: |
33.54914 |
| Observation types: |
in situ, survey - biological, visual estimate, visual observation
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| Instrument types: |
camera, GPS, laboratory analysis, multi-parameter water quality sensor, photograph, photo-identification techniques, visual analysis, visual estimate, visual observation
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| Datatypes: |
ANIMALS - GROUP - NUMBER IN GROUP, biological data, cetacean, LATITUDE, LONGITUDE, MARINE MAMMALS, MARINE SPECIES INVENTORY, SALINITY, SEA STATE, SEA SURFACE TEMPERATURE, species abundance, water depth
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| Submitter: |
Weinberger, Lee |
| Submitting institution: |
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| Collecting institutions: |
North Carolina Department of Environmental Quality, US DOC; NOAA; NMFS; Southeast Fisheries Science Center
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| Contributing projects: |
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| Platforms: |
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| Number of observations: |
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| Supplementary information: |
Submission Package ID: CFRY33 |
| Availability date: |
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| Metadata version: |
3 |
| Keydate: |
2022-06-23 19:30:23+00 |
| Editdate: |
2022-07-12 14:34:45+00 |