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MMS Seabird Ecology Study

Entry ID: seamap49

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Summary

Abstract: California Seabird Ecology Study Studies: -- Seabird Ecology Study [Birds and Mammals] Study Code: SE Contract Number: 14-12-001-30183
Principal Investigator(s)/Affiliation: Kenneth T. Briggs, Institute of Marine Sciences, University of California, Santa Cruz; portions of this work were done by D. G. Ainley and others at Point Reyes Bird Observatory, Stinson Beach, CA, and by L. B. Spear and others at Science Applications International Corporation, Monterey, CA.

Purpose: OBJECTIVES: To study the feeding and foraging ecology of seabirds nesting in California through 1) synthesis of the existing literature, 2) analysis of unpublished data on diet, feeding behavior, and distribution of flocks, 3) identification of data gaps, and 4) conduct of additional studies to map seabird distribution and describe correlative oceanographic conditions.

SUPPLEMENTAL ... INFORMATION:

DATA COLLECTION:
TIME PERIOD: 1984 through 1987
STUDY AREA: Area of study included all waters of California, focusing on the continental shelf near large nesting colonies off Point St. George, in the Gulf of the Farallones, and in the Southern California Bight. Field studies were conducted from Monterey Bay to about Bodega Head.

METHODOLOGY: Surveys of seabird abundance and distribution were done by aircraft and by ship. Data collection protocols for aerial surveys were identical with those used for the Central and Northern California Marine Mammal and Seabird Surveys (see Section 2.0, above). Protocols for ship surveys were identical with those of the Marine Mammal and Seabird Studies of the Southern California Bight (see Section 1.0, above) with the following exception: the searched strip extended 300 m at right-angle to the ship's heading, and observers recorded distance from the vessel in three equal zones of 100 m; sightings beyond were recorded as "off-transect". Four aerial surveys and three vessel surveys were conducted in the spring and summer of 1985.

DATABASES PRODUCED: Results of four aerial surveys and one ship survey are included in the database. All focus on the distribution and abundance of seabirds in waters from Monterey Bay to the Gulf of the Farallones in spring and summer of 1985. Survey 601 March 12-13, 1985 Survey 602 March 21, 1985 Survey 603 May 10, 1985 Survey 604 May 27-28, 1985 Survey 703 May 31 to June 17, 1985 Effort data for aerial surveys consist of start-stop pairs of coordinates (date/time, latitude, and longitude); sightings have been assigned a position interpolated from the time of the observation. For ship data, the location of each sighting within 0.5 km was available in digital form (the center of a 1 km segment along the ship's track in which the sighting occurred).

CURRENTNESS REFERENCE: ground condition

SPATIAL REFERENCE INFORMATION - GEODETIC MODEL
Horizontal Datum Name: D_WGS_1984
Ellipsoid Name: WGS_1984
Semi-major Axis: 6378137.000000
Denominator of Flattening Ratio: 298.257224

Related URL

Link: GET DATA

Description: Access data from the OBIS and OBIS-SEAMAP websites.

Multimedia Sample

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Caption: California Seabird Ecology Study

Geographic Coverage

(Click for Interactive Map)

Spatial coordinates

N: 38.12

S: 36.05

E: -121.66

W: -124.29

Data Set Citation

Dataset Originator/Creator: Minerals Management Service

Dataset Title: MMS Seabird Ecology Study

Dataset Series Name: OBIS-SEAMAP

Dataset Release Date: 2004-02-12 23:12:38.4823-05

Dataset Release Place: http://seamap.env.duke.edu/

Dataset Publisher: OBIS-SEAMAP

Data Presentation Form: vector digital data

Online Resource: http://www.mms.gov/

Parent DIF

This data set description is a member of a collection. The collection is described in
OBIS-SEAMAP

Temporal Coverage

Start Date: 1985-03-12

Stop Date: 1985-05-28

Location Keywords

OCEAN > PACIFIC OCEAN > NORTH PACIFIC OCEAN

CONTINENT > NORTH AMERICA > UNITED STATES OF AMERICA > CALIFORNIA

Data Resolution

Latitude Resolution: 0.000167 Decimal degrees
Longitude Resolution: 0.000167 Decimal degrees
Horizontal Resolution Range: 1 meter - < 30 meters

Science Keywords

BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS

BIOLOGICAL CLASSIFICATION > ANIMALS/VERTEBRATES > BIRDS > EAGLES/FALCONS/HAWKS AND ALLIES

ISO Topic Category

BIOTA

BOUNDARIES

Platform

SHIPS

Project

OBIS-SEAMAP > OBIS - Spatial Ecological Analysis of Megavertebrate Populations

Access Constraints ACCESS CONSTRAINTS: Open public unless otherwise noted.

DISTRIBUTION LIABILITY: Not to hold OBIS-SEAMAP liable for errors in the data. While we have made every effort to ensure the quality of the database, we cannot guarantee the accuracy of these datasets. Also please refer to Use Constraints.

Use Constraints Not to use data contained in OBIS-SEAMAP in any publication, product, or commercial application without prior written consent of the original data provider. To cite both the data provider and OBIS-SEAMAP appropriately after approval of use is obtained. Also please refer to Distribution Liability.

Ancillary Keywords

Achichilique pico amarillo

aigles

Data Set Progress

COMPLETE

Data Center

OBIS Spatial Ecological Analysis of Megavertebrate Populations

Data Center URL: http://seamap.env.duke.edu/

Data Center Personnel
Name: PATRICK N. HALPIN Phone: 919-613-8062 Email: phalpin at duke.edu Contact Address: Duke University Box 90328 City: Durham Province or State: NC Postal Code: 27708 Country: USA

Distribution

Distribution Format: Shapefile

Personnel

EI FUJIOKA

Role: TECHNICAL CONTACT

Role: DIF AUTHOR

Phone: 919-613-8021

Fax: 919-684-8741

Email: efujioka at duke.edu

Contact Address:

LSRC A321

Box 90328

City: Durham

Province or State: NC

Postal Code: 27708

Country: USA

GLENN FORD

Role: TECHNICAL CONTACT

Phone: (503) 287-5173

Email: eci at teleport.com

Contact Address:

2735 N.E. Weidler Street

City: Portland

Province or State: OR

Postal Code: 97232

Country: USA

Publications/References

Briggs, K. T., D. G. Ainley, D. R. Carlson, D. B. Lewis, W. B. Tyler, L. B. Spear, and L. A. Ferris. 1987. Final Report: California Seabird Ecology Study. Prepared by the Institute of Marine Sciences, University of California, Santa Cruz, for the Pacific OCS Region, Minerals Management Service, Contract No. 14-12-001-30183. vii and 153 pp.

Creation and Review Dates

DIF Creation Date: 2007-12-28

Last DIF Revision Date: 2010-03-02

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