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Multi-species marine sighting survey in Golfo Dulce, Costa Rica, Jan-Feb 2010
Bessesen, B.L. 2010. Project Report and Summary of Multi-Species Marine Sighting Survey in Golfo Dulce, Costa Rica, January - February 2010. 26 pp

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Availability: Creative Commons License This dataset is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

This pilot project was designed to collect baseline data regarding the marine species that enter or reside in Golfo Dulce (Costa Rica) during the dry season months of January and February 2010, and to determine spatial distribution for species seen during the study period. more

During the months of January and February 2010, 30 daily marine fauna sighting surveys were systematically conducted across the waters of Golfo Dulce, a tropical fiord-like embayment in the South Pacific region of Costa Rica. Special focus was placed on cetaceans, chelonids, whale sharks and pelagic sea snakes. Within the 233 logged observation hours, 234 first-hand sightings were recorded from a small panga; photo-identification was collected for 76% of those sightings. Dozens of marine species were documented during the survey period, but those that played most prominently in the survey were Humpback whales (Megaptera novaengiae), bottlenose dolphins (Turciops truncatus), pantropical spotted dolphins (Stenella attenuata), green/black sea turtles (Chelonia mydas agassizii), olive ridley sea turtles (Lepidochelys olivacea), hawksbill sea turtles (Eretmochelys imbricata), and pelagic sea snakes (Pelamis platurus). The study was marked by a lack of sightings for whale sharks (Rhinocodon typus), a species expected inside Golfo Dulce at the time of study. Sighting coordinates are based on the display of a handheld Garmin handheld GPS III. Measure accuracy is untested. Several other data attributes were also collected during our survey, including: Geographical area, distinctive markings, initial distance from boat, closest approach distance, swim direction, behavior, associated fauna, and environmental conditions (bi-daily). The best estimate recorded was used as the obs_count; when it was blank, the minimum estimated number of animals was used; when it was blank, too, the sum of the number of adults and young was used.

Biology > Mammals, Biology > Reptiles
Marine, ISE, Costa Rica, Dulce Gulf, Chelonia mydas (Linnaeus, 1758), Delphinidae Gray, 1821, Eretmochelys imbricata (Linnaeus, 1766), Lepidochelys olivacea (Eschscholtz, 1829), Megaptera novaeangliae (Borowski, 1781), Stenella Gray, 1866, Tursiops truncatus (Montagu, 1821)

Geographical coverage
ISE, Costa Rica, Dulce Gulf

Temporal coverage
13 January 2010 - 24 February 2010

Taxonomic coverage
Chelonia mydas (Linnaeus, 1758) [WoRMS]
Delphinidae Gray, 1821 [WoRMS]
Eretmochelys imbricata (Linnaeus, 1766) [WoRMS]
Lepidochelys olivacea (Eschscholtz, 1829) [WoRMS]
Megaptera novaeangliae (Borowski, 1781) [WoRMS]
Stenella Gray, 1866 [WoRMS]
Tursiops truncatus (Montagu, 1821) [WoRMS]

Phoenix Zoo, moredata owner

Related datasets
Published in:
OBIS-SEAMAP: Spatial Ecological Analysis of Megavertebrate Populations, more

Based on this dataset
Bessesen, B.L. (2010). Project report and summary of multi-species marine sighting survey in Golfo Dulce, Costa Rica, January – February 2010. [S.n.]: [s.l.]. [diff. pag.] pp., more

Dataset information:

Dataset status: Completed
Data type: Data
Data origin: Research: field survey
Metadatarecord created: 2012-11-27
Information last updated: 2012-11-27
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