Duke Harbor Porpoise Tracking

Duke University Marine Laboratory

These data were obtained from harbor porpoises (Phocoena phocoena) equipped with satellite-linked transmitters in the Gulf of Maine. All porpoises were obtained from herring weirs on the island of Grand Manan, New Brunswick, Canada (44 deg 45' N, 67 deg 45' W) during the summer months (July - September). Details on each porpoise are given in the summary table. Positional data are obtained via Service ARGOS (http://www.argosinc.com/). See Read and Westgate (1997) for complete details of tagging methods.

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The dataset has been updated over time as outlined below. Each entry includes the version number, release date, type of change, and a short description.

Overview

This section explains attributes included in the original dataset. OBIS-SEAMAP restricts the attributes available to the public to date/time, lat/lon and species names/counts only. Should you need other attributes described here, you are encouraged to contact the data provider.

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
series	Tag ID
species	Species name recorded
date	Date
time	Time
lat	Latitude in decimal degrees
long	Longitude in decimal degrees
lc	LC
geom	Geometry field added by OBIS-SEAMAP
oid	Unique ID number (generated by OBIS-SEAMAP)