Foraging locations of black-legged kittiwakes at the Pribilof Islands 2008-10

Metadata:

• Identification_Information
• Data_Quality_Information
• Spatial_Data_Organization_Information
• Spatial_Reference_Information
• Entity_and_Attribute_Information
• Distribution_Information
• Metadata_Reference_Information

Identification_Information:

Citation:

Citation_Information:

Originator: Paredes, Rosana., Irons, David. B., and Roby, Daniel, D.

Publication_Date: Unknown

Title:

Foraging locations of black-legged kittiwakes at the Pribilof Islands 2008-10

Geospatial_Data_Presentation_Form: database

Publication_Information:

Publication_Place: Marine Ecology Progress Series

Publisher: Unspecified

Description:

Abstract:

We deployed GPS (Gipsy 2, Technosmart, 10 g) and activity loggers (BAS, 2 g) simultaneously in Black-legged kittiwakes (Rissa tridactyla), a surface-feeding seabird, nesting at the two Pribilof Islands (St. Paul and St. George) in 2008, 2009 and 2010.
This data set was obtained combining data of GPS (locations) and activity loggers (wet/dry stages) matched by time. We linked activity logger data (wet/dry values) to the nearest actual or interpolated bird location using GPS data, allowing a time lag of 8 minutes previous and 2 minutes following the activity record. The first 10 minutes recorded after an individual left the nest was negated since birds were commonly observed bathing or visited ponds after leaving their nest site. Three at-sea activity types were defined: flying, resting, and “active foraging”. Flying was defined as when the logger was dry for at least 99% of a given 10-minute interval when a bird was away from the nest. Resting on the water was defined as when a bird spent 90% or greater of its time on the water during a given 10 minute interval, and this 10 minute interval was associated with previous and post ten minute bins where 90% or greater of the time was spent on the water and by being completely wet for a ten minute interval. This allows for some activity to occur that might cause a logger to record dry such as bathing and preening during prolonged periods of sitting on the water. “Active foraging” was defined as all other time spent at sea, which constituted periods when birds were switching states between air and water.

Purpose:

The purpose of this data set is to provide behavioral data of kittiwakes duirng foraging trips to better identify feeding areas and hot spots.

Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20080707

Ending_Date: 20100727

Currentness_Reference: Unspecified

Status:

Progress: Complete

Maintenance_and_Update_Frequency: Unspecified

Spatial_Domain:

Description_of_Geographic_Extent: Pribilof islands: St. Paul and St. George islands.

Bounding_Coordinates:

West_Bounding_Coordinate: -171.598287

East_Bounding_Coordinate: -167.696392

North_Bounding_Coordinate: 58.20458

South_Bounding_Coordinate: 55.195193

Keywords:

Theme:

Theme_Keyword_Thesaurus: biota

Theme_Keyword: foraging

Theme_Keyword: seabirds

Theme_Keyword: black-legged kittiwake

Theme_Keyword: at-sea behavior

Theme:

Theme_Keyword_Thesaurus: None

Theme_Keyword: project_number:B63

Theme_Keyword: data_url:<http://data.eol.ucar.edu/codiac/dss/id=245.B63-002>

Theme_Keyword: archive_url:<http://www.eol.ucar.edu/projects/bsierp>

Place:

Place_Keyword_Thesaurus: None

Place_Keyword: Bering Sea

Place_Keyword: Pribilof Islands

Place_Keyword: St. Paul Island

Place_Keyword: St. George Island

Taxonomy:

Keywords/Taxon:

Taxonomic_Keyword_Thesaurus: Vertebrate

Taxonomic_Keywords: black-legged kittiwake, Rissa tridactyla

Taxonomic_Classification:

Taxon_Rank_Name: Kingdom

Taxon_Rank_Value: Animalia

Taxonomic_Classification:

Taxon_Rank_Name: Phylum

Taxon_Rank_Value: Chordata

Taxonomic_Classification:

Taxon_Rank_Name: Subphylum

Taxon_Rank_Value: vertebrata

Taxonomic_Classification:

Taxon_Rank_Name: Class

Taxon_Rank_Value: Aves

Taxonomic_Classification:

Taxon_Rank_Name: Order

Taxon_Rank_Value: Charadriiformes

Taxonomic_Classification:

Taxon_Rank_Name: Family

Taxon_Rank_Value: Laridae

Taxonomic_Classification:

Taxon_Rank_Name: Genus

Taxon_Rank_Value: Rissa

Taxonomic_Classification:

Taxon_Rank_Name: Species

Taxon_Rank_Value: Rissa tridactyla

Access_Constraints: None

Use_Constraints:

Must cite originator if used in publications, reports, presentations, etc.

Point_of_Contact:

Contact_Information:

Contact_Person_Primary:

Contact_Person: Rosana Paredes

Contact_Organization: Oregon State University

Contact_Position: Postdoctoral Research Associate

Contact_Address:

Address_Type: mailing

City: Corvallis

State_or_Province: Oregon

Postal_Code: 97331-3803

Contact_Voice_Telephone: 250 652 0717

Contact_Electronic_Mail_Address: u92rp@mun.ca

Data_Quality_Information:

Attribute_Accuracy:

Attribute_Accuracy_Report: Data is final

Logical_Consistency_Report: 'not applicable"

Completeness_Report:

We linked activity logger data (wet/dry values) to the nearest actual or interpolated bird location using GPS data, allowing a time lag of 8 minutes previous and 2 minutes following the activity record. The first 10 minutes recorded after an individual left the nest was negated since birds were commonly observed bathing or visited ponds after leaving their nest site. Three at-sea activity types were defined: flying, resting, and “active foraging”. Flying was defined as when the logger was dry for at least 99% of a given 10-minute interval when a bird was away from the nest. Resting on the water was defined as when a bird spent 90% or greater of its time on the water during a given 10 minute interval, and this 10 minute interval was associated with previous and post ten minute bins where 90% or greater of the time was spent on the water and by being completely wet for a ten minute interval. This allows for some activity to occur that might cause a logger to record dry such as bathing and preening during prolonged periods of sitting on the water. “Active foraging” was defined as all other time spent at sea, which constituted periods when birds were switching states between air and water.

Positional_Accuracy:

Horizontal_Positional_Accuracy:

Horizontal_Positional_Accuracy_Report:

Location data from GPS units were first filtered following a forward-backward speed method (McConnell et al. 1992). We used a maximum speed of 80 km/h (the maximum instantaneous velocity recorded from the highest quality GPS fixes [dilution of precision of 1, indicating a wider angular separation of satellites and the highest positional accuracy] was 71 km/h) to cull erroneous positions (median = 5%, range 0 – 19%, of locations were removed from each individual). Most of the erroneous locations were near the colony, likely due to satellite signal interference from adjacent rock cliffs or vegetation. Not all GPS units recorded positions at the same time intervals, and some units occasionally malfunctioned with larger time gaps in obtaining positions. Due to these complications, we spatially interpolated all tracking data at 10 m linear intervals for time gaps of 30 min or less between consecutive locations.

Lineage:

Source_Information:

Source_Citation:

Citation_Information:

Originator: Unknown

Publication_Date: Unknown

Title: Unspecified

Geospatial_Data_Presentation_Form: Unspecified

Type_of_Source_Media: Unspecified

Source_Time_Period_of_Content:

Time_Period_Information:

Range_of_Dates/Times:

Beginning_Date: 20090701

Ending_Date: 20090817

Source_Currentness_Reference: Unspecified

Source_Citation_Abbreviation: Unspecified

Source_Contribution: Unspecified

Process_Step:

Process_Description: No process steps have been described for this data set

Process_Date: Unknown

Spatial_Data_Organization_Information:

Indirect_Spatial_Reference:

Longitude and Latitude Projection: Albers; GCS_North_American_1983; Datum: D_North_American_1983. Prime Meridian: Greenwich Angular Unit: Degree

Direct_Spatial_Reference_Method: Vector

Spatial_Reference_Information:

Horizontal_Coordinate_System_Definition:

Geographic:

Latitude_Resolution: 0

Longitude_Resolution: 0

Geographic_Coordinate_Units: Decimal degrees

Entity_and_Attribute_Information:

Overview_Description:

Entity_and_Attribute_Overview:

The spread excel sheets contain the trip number ("tripnum", band naumber ("band"), wet value ('act"), time of GPS ("time GPS"), Date of GPS ("Date GPS"), Latitude (LAT), Longitud (LON), wet satge ("wet", 0 = no, 1 = yes), dry stage ("dry"), foraging ("for"), island ("STP" -St. Paul, "STG"-St. George)

Entity_and_Attribute_Detail_Citation:

Paredes R. Harding AMA, Irons DB, Roby DD, Suryan R, Orben RA, Renner H, Young RC, Kitaysky A. Proximity to multiple foraging habitats enhances seabirds’ resilience to local food shortages . MEPS. In press.

Distribution_Information:

Distributor:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu

Distribution_Liability:

No warranty expressed or implied is made regarding the accuracy or utility of the data, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that careful attention be paid to the contents of the metadata file associated with the data. The NCAR and NPRB shall not be held liable for improper or incorrect use of the data described and/or contained herein.

Standard_Order_Process:

Digital_Form:

Digital_Transfer_Information:

Format_Name: XLS

File_Decompression_Technique: No compression applied

Digital_Transfer_Option:

Online_Option:

Computer_Contact_Information:

Network_Address:

Network_Resource_Name: <http://beringsea.eol.ucar.edu>

Fees: None

Metadata_Reference_Information:

Metadata_Date: 20120919

Metadata_Contact:

Contact_Information:

Contact_Organization_Primary:

Contact_Organization: National Center for Atmospheric Research

Contact_Person: Earth Observing Laboratory

Contact_Address:

Address_Type: mailing and physical

Address: 3450 Mitchell Lane

City: Boulder

State_or_Province: CO

Postal_Code: 80301

Country: USA

Contact_Voice_Telephone: 303-497-8154

Contact_Electronic_Mail_Address: codiac@ucar.edu

Contact_Electronic_Mail_Address: stott@ucar.edu

Metadata_Standard_Name:

FGDC Biological Data Profile of the Content Standard for Digital Geospatial Metadata

Metadata_Standard_Version: FGDC-STD-001.1-1999