Sargasso 2004 - Seabirds

Hal Whitehead, Department of Biology, Dalhousie University

The Sargasso Sea cruise surveyed marine birds and mammals in the Northeast Atlantic Ocean, during the summer of 2004. This survey onboard the Valiant 40 ocean-going research vessel Balaena, consisted of two survey legs: a sail from Halifax, Nova Scotia to Beaufort, North Carolina (May 5 - 27), and a round trip from Beaufort, North Carolina to offshore waters north of the Bahamas (June 2 - 22). Seabirds were surveyed during the second leg of this cruise by Lesley Thorne, a graduate student from the Duke University Marine Laboratory.

The seabird survey data summarize the distribution and abundance of marine birds during the Sargasso Sea cruise.

[2020-09-30] The following invalid species names were corrected according to the Integrated Taxonomic Information System (ITIS).
Bonaparte's Gull: Larus philadelphia (176839) => Chroicocephalus philadelphia (824040)
Laughing Gull: Larus atricilla (176837) => Leucophaeus atricilla (824079)

This dataset includes survey effort and sightings on effort and during focal follows of sperm whale schools (off effort). The survey track was recorded by logging a position every 10 minutes using the vessel's GPS.

Overview

Attributes described below represent those in the original dataset provided by the provider.
Only minimum required attributes are visible and downloadable online. Other attributes may be obtained upon provider's permission.

Attributes in dataset

Attribute (table column)	Description
id
month
day
year
hours
minutes
species
number
latitude
longitude
sighting_type
oid	Unique ID number (generated by SEAMAP)