Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS.
BACKGROUND: ARGOS satellite telemetry is one of the most widely used methods to track the movements of free-ranging marine and terrestrial animals and is fundamental to studies of foraging ecology, migratory behavior and habitat-use. ARGOS location estimates do not include complete error estimations...
Published in: | PLoS ONE |
---|---|
Main Authors: | , , , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
Public Library of Science (PLoS)
2010
|
Subjects: | |
Online Access: | https://doi.org/10.1371/journal.pone.0008677 https://doaj.org/article/3b00fc3be8414b75bdfb056cb2c62939 |
id |
ftdoajarticles:oai:doaj.org/article:3b00fc3be8414b75bdfb056cb2c62939 |
---|---|
record_format |
openpolar |
spelling |
ftdoajarticles:oai:doaj.org/article:3b00fc3be8414b75bdfb056cb2c62939 2023-05-15T16:05:40+02:00 Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. Daniel P Costa Patrick W Robinson John P Y Arnould Autumn-Lynn Harrison Samantha E Simmons Jason L Hassrick Andrew J Hoskins Stephen P Kirkman Herman Oosthuizen Stella Villegas-Amtmann Daniel E Crocker 2010-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0008677 https://doaj.org/article/3b00fc3be8414b75bdfb056cb2c62939 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC2806907?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0008677 https://doaj.org/article/3b00fc3be8414b75bdfb056cb2c62939 PLoS ONE, Vol 5, Iss 1, p e8677 (2010) Medicine R Science Q article 2010 ftdoajarticles https://doi.org/10.1371/journal.pone.0008677 2022-12-31T05:15:09Z BACKGROUND: ARGOS satellite telemetry is one of the most widely used methods to track the movements of free-ranging marine and terrestrial animals and is fundamental to studies of foraging ecology, migratory behavior and habitat-use. ARGOS location estimates do not include complete error estimations, and for many marine organisms, the most commonly acquired locations (Location Class 0, A, B, or Z) are provided with no declared error estimate. METHODOLOGY/PRINCIPAL FINDINGS: We compared the accuracy of ARGOS Locations to those obtained using Fastloc GPS from the same electronic tags on five species of pinnipeds: 9 California sea lions (Zalophus californianus), 4 Galapagos sea lions (Zalophus wollebaeki), 6 Cape fur seals (Arctocephalus pusillus pusillus), 3 Australian fur seals (A. p. doriferus) and 5 northern elephant seals (Mirounga angustirostris). These species encompass a range of marine habitats (highly pelagic vs coastal), diving behaviors (mean dive durations 2-21 min) and range of latitudes (equator to temperate). A total of 7,318 ARGOS positions and 27,046 GPS positions were collected. Of these, 1,105 ARGOS positions were obtained within five minutes of a GPS position and were used for comparison. The 68(th) percentile ARGOS location errors as measured in this study were LC-3 0.49 km, LC-2 1.01 km, LC-1 1.20 km, LC-0 4.18 km, LC-A 6.19 km, LC-B 10.28 km. CONCLUSIONS/SIGNIFICANCE: The ARGOS errors measured here are greater than those provided by ARGOS, but within the range of other studies. The error was non-normally distributed with each LC highly right-skewed. Locations of species that make short duration dives and spend extended periods on the surface (sea lions and fur seals) had less error than species like elephant seals that spend more time underwater and have shorter surface intervals. Supplemental data (S1) are provided allowing the creation of density distributions that can be used in a variety of filtering algorithms to improve the quality of ARGOS tracking data. Article in Journal/Newspaper Elephant Seals Directory of Open Access Journals: DOAJ Articles Galapagos PLoS ONE 5 1 e8677 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Daniel P Costa Patrick W Robinson John P Y Arnould Autumn-Lynn Harrison Samantha E Simmons Jason L Hassrick Andrew J Hoskins Stephen P Kirkman Herman Oosthuizen Stella Villegas-Amtmann Daniel E Crocker Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
topic_facet |
Medicine R Science Q |
description |
BACKGROUND: ARGOS satellite telemetry is one of the most widely used methods to track the movements of free-ranging marine and terrestrial animals and is fundamental to studies of foraging ecology, migratory behavior and habitat-use. ARGOS location estimates do not include complete error estimations, and for many marine organisms, the most commonly acquired locations (Location Class 0, A, B, or Z) are provided with no declared error estimate. METHODOLOGY/PRINCIPAL FINDINGS: We compared the accuracy of ARGOS Locations to those obtained using Fastloc GPS from the same electronic tags on five species of pinnipeds: 9 California sea lions (Zalophus californianus), 4 Galapagos sea lions (Zalophus wollebaeki), 6 Cape fur seals (Arctocephalus pusillus pusillus), 3 Australian fur seals (A. p. doriferus) and 5 northern elephant seals (Mirounga angustirostris). These species encompass a range of marine habitats (highly pelagic vs coastal), diving behaviors (mean dive durations 2-21 min) and range of latitudes (equator to temperate). A total of 7,318 ARGOS positions and 27,046 GPS positions were collected. Of these, 1,105 ARGOS positions were obtained within five minutes of a GPS position and were used for comparison. The 68(th) percentile ARGOS location errors as measured in this study were LC-3 0.49 km, LC-2 1.01 km, LC-1 1.20 km, LC-0 4.18 km, LC-A 6.19 km, LC-B 10.28 km. CONCLUSIONS/SIGNIFICANCE: The ARGOS errors measured here are greater than those provided by ARGOS, but within the range of other studies. The error was non-normally distributed with each LC highly right-skewed. Locations of species that make short duration dives and spend extended periods on the surface (sea lions and fur seals) had less error than species like elephant seals that spend more time underwater and have shorter surface intervals. Supplemental data (S1) are provided allowing the creation of density distributions that can be used in a variety of filtering algorithms to improve the quality of ARGOS tracking data. |
format |
Article in Journal/Newspaper |
author |
Daniel P Costa Patrick W Robinson John P Y Arnould Autumn-Lynn Harrison Samantha E Simmons Jason L Hassrick Andrew J Hoskins Stephen P Kirkman Herman Oosthuizen Stella Villegas-Amtmann Daniel E Crocker |
author_facet |
Daniel P Costa Patrick W Robinson John P Y Arnould Autumn-Lynn Harrison Samantha E Simmons Jason L Hassrick Andrew J Hoskins Stephen P Kirkman Herman Oosthuizen Stella Villegas-Amtmann Daniel E Crocker |
author_sort |
Daniel P Costa |
title |
Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
title_short |
Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
title_full |
Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
title_fullStr |
Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
title_full_unstemmed |
Accuracy of ARGOS locations of Pinnipeds at-sea estimated using Fastloc GPS. |
title_sort |
accuracy of argos locations of pinnipeds at-sea estimated using fastloc gps. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2010 |
url |
https://doi.org/10.1371/journal.pone.0008677 https://doaj.org/article/3b00fc3be8414b75bdfb056cb2c62939 |
geographic |
Galapagos |
geographic_facet |
Galapagos |
genre |
Elephant Seals |
genre_facet |
Elephant Seals |
op_source |
PLoS ONE, Vol 5, Iss 1, p e8677 (2010) |
op_relation |
http://europepmc.org/articles/PMC2806907?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0008677 https://doaj.org/article/3b00fc3be8414b75bdfb056cb2c62939 |
op_doi |
https://doi.org/10.1371/journal.pone.0008677 |
container_title |
PLoS ONE |
container_volume |
5 |
container_issue |
1 |
container_start_page |
e8677 |
_version_ |
1766401579132387328 |