[Keyword='True's porpoise']
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NMML Harbor Porpoise Aerial Survey, Kodiak Island, Replicate 2, 1992
Entry ID:
seamap133
Summary
Abstract:
On 6 July to 9 August 1992, as part of a larger study, Alaska harbor
porpoise (Phocoena phocoena) abundance was investigated during an aerial survey off Kodiak Island. Employing a Twin Otter as the survey platform, the second of three identical saw-tooth tracklines was flown at an altitude of 152.2 m (500ft) and at an airspeed of 100 kn. Line-transect methodology was used, and only those observations made during optimal conditions were analyzed. Density of harbor porpoises was calculated using line transect estimates based on perpendicular distances of sightings to the cruise track of the airplane. On average, porpoise group size and density off Kodiak Island was 1.41 (SE = .13) and 1.85 groups/100 km^2 (SE=6.03). Purpose: Although harbor porpoises, Phocoena phocoena, are known to occur throughout Alaska waters (Fiscus et al. 1976; Leatherwood and Reeves 1978; Lawry et al. 1982; Leatherwood et al. 1983), few estimates of abundance exist. In 1991, the National Marine Mammal Laboratory initiated a 3-yr study on Alaska harbor porpoises. The objectives of this program were to: 1) Obtain minimum population estimates in ... 
Related URL
Data Set Citation
Dataset Originator/Creator:
National Marine Mammal Laboratory
Dataset Title:
NMML Harbor Porpoise Aerial Survey, Kodiak Island, Replicate 2, 1992
Dataset Series Name:
OBIS-SEAMAP
Dataset Release Date:
2004-08-09 16:47:08.894789-04
Dataset Release Place:
http://seamap.env.duke.edu/
Dataset Publisher:
OBIS-SEAMAP
Data Presentation Form:
vector digital data
Online Resource:
http://nmml.afsc.noaa.gov/
Parent DIF
Temporal Coverage
Start Date:
1992-07-06
Stop Date:
1992-07-31
Data Resolution
Latitude Resolution:
0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees Horizontal Resolution Range: 1 meter - < 30 meters Science Keywords
Project
Access Constraints
None
Use Constraints
The Trustees of Columbia University hold the copyright of this dataset. Users are prohibited from any commercial sale or free redistribution without explicit written permission from CIESIN. Users should acknowledge CIESIN as the source used in the creation of any reports, publications, new datasets, derived products, or services resulting from the use of this dataset. CIESIN also requests reprints of any publications and notification of any redistributing efforts.
Ancillary Keywords
Data Set Progress
COMPLETE
Originating Center
Data Center
Distribution
Distribution Media:
Online Internet (HTTP)
Distribution Format:
PDF
Fees:
0
Distribution Media:
Online Internet (HTTP)
Distribution Size:
0.13 MB
Distribution Format:
XLS
Fees:
0
Personnel
Role:
TECHNICAL CONTACT
Phone:
+1 845-365-8920
Fax:
+1 845-365-8922
Email:
ciesin.info at ciesin.columbia.edu
Contact Address:
61 Route 9W, P.O. Box 1000
City:
Palisades
Province or State:
NY
Postal Code:
10964
Country:
USA
Publications/References
World Economic Forum (WEF) Global Leaders for Tomorrow Environment Task Force, Yale Center for Environmental Law and Policy (YCELP)/Yale University, and Center for International Earth Science Information Network (CIESIN)/Columbia University (2000), 2000 Pilot Environmental Sustainability Index (ESI), Yale Center for Environmental Law and Policy (YCELP)/Yale University, New Haven, CT, http://sedac.ciesin.columbia.edu/data/set/esi-pilot-environmental-s...
Extended Metadata Properties
(Click to view more)
Creation and Review Dates
DIF Creation Date:
2001-05-10
Last DIF Revision Date:
2012-11-02
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