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Lake Michigan 2010-11 selected common loon telemetry observations

Metadata Updated: July 6, 2024

Implantable satellite transmitters (e.g., Model PTT-100, Microwave Telemetry, Inc) were incorporated into the study to provide fine-resolution location data for a sample of the adult male common loons fitted with geolocator tags in 2010 and 2011. Transmitters were implanted in the abdominal cavity following procedures developed by Korschgen et al. (1996). The satellite transmitters were programmed to transmit on a variable schedule based on the anticipated stage of migration during the loon’s annual cycle - 8 hours on:72 hours off during the breeding season, 8 hours on:24 hours off while migrating, 6 to 8 hours on:96 hours off on the wintering grounds, and 8 hours on:24 hours off during spring migration, and 8 hours on:96 hours off for the remaining life of the transmitter. Transmitter data, received by equipment on polar-orbiting National Oceanic and Atmospheric Administration Tiros-N weather satellites, were transmitted to the Service Argos data processing center in Landover, Maryland, where loon locations were estimated from the Doppler shift in the transmitter's carrier frequency. Location estimates were acquired using Argos Standard Service Processing (Argos Location Classes [LC] 3, 2, 1, and 0) and Auxiliary Location Processing (LC A, B, and Z). One standard deviation of nominal accuracy for location estimates with LC 3, 2, 1, and 0 are <250, 250 to 500, 500 to 1,500, and >1,500 m, respectively (Service Argos 2008). We utilized the most accurate locations per 8-hour transmission period for each individual to describe the daily location of that adult loon. Spot measurements of water depth and distance to shore were determined for each radiomarked loon location. Only location estimates for LC qualities 1-3 were used in the analyses.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date June 1, 2023
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/9c62fd2f6643be1fede6b28780e571fe
Identifier USGS:5a9ebcb2e4b0699060731523
Data Last Modified 20220613
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id 3186ee58-6352-4ab9-9adf-960a6df74b85
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash e5aa615320a267bb3025b8227098551438af0477cb895a7d78612c40fde08be4
Source Schema Version 1.1

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