Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS

 

Show simple item record

dc.contributor.author Costa, Daniel P en_ZA
dc.contributor.author Robinson, Patrick W en_ZA
dc.contributor.author Arnould, John P Y en_ZA
dc.contributor.author Harrison, Autumn-Lynn en_ZA
dc.contributor.author Simmons, Samantha E en_ZA
dc.contributor.author Hassrick, Jason L en_ZA
dc.contributor.author Hoskins, Andrew J en_ZA
dc.contributor.author Kirkman, Stephen P en_ZA
dc.contributor.author Oosthuizen, Herman en_ZA
dc.contributor.author Villegas-Amtmann, Stella en_ZA
dc.date.accessioned 2015-12-28T06:49:34Z
dc.date.available 2015-12-28T06:49:34Z
dc.date.issued 2010 en_ZA
dc.identifier.citation Costa, D. P., Robinson, P. W., Arnould, J. P., Harrison, A. L., Simmons, S. E., Hassrick, J. L., ... & Crocker, D. E. (2010). Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS. PloS one, 5(1), e8677. doi:10.1371/journal.pone.0008677 en_ZA
dc.identifier.uri http://hdl.handle.net/11427/16060
dc.identifier.uri http://dx.doi.org/10.1371/journal.pone.0008677
dc.description.abstract 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. en_ZA
dc.language.iso eng en_ZA
dc.publisher Public Library of Science en_ZA
dc.rights This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. en_ZA
dc.rights.uri http://creativecommons.org/licenses/by/4.0 en_ZA
dc.source PLoS One en_ZA
dc.source.uri http://journals.plos.org/plosone en_ZA
dc.subject.other Seals en_ZA
dc.subject.other Sea lions en_ZA
dc.subject.other Animal behavior en_ZA
dc.subject.other Latitude en_ZA
dc.subject.other Longitude en_ZA
dc.subject.other Animal migration en_ZA
dc.subject.other Foraging en_ZA
dc.subject.other Marine geology en_ZA
dc.title Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS en_ZA
dc.type Journal Article en_ZA
dc.rights.holder © 2010 Costa et al en_ZA
uct.type.publication Research en_ZA
uct.type.resource Article en_ZA
dc.publisher.institution University of Cape Town
dc.publisher.faculty Faculty of Science en_ZA
dc.publisher.department Animal Demography Unit (ADU) en_ZA
uct.type.filetype Text
uct.type.filetype Image
dc.identifier.apacitation Costa, D. P., Robinson, P. W., Arnould, J. P. Y., Harrison, A., Simmons, S. E., Hassrick, J. L., ... Villegas-Amtmann, S. (2010). Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS. <i>PLoS One</i>, http://hdl.handle.net/11427/16060 en_ZA
dc.identifier.chicagocitation Costa, Daniel P, Patrick W Robinson, John P Y Arnould, Autumn-Lynn Harrison, Samantha E Simmons, Jason L Hassrick, Andrew J Hoskins, Stephen P Kirkman, Herman Oosthuizen, and Stella Villegas-Amtmann "Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS." <i>PLoS One</i> (2010) http://hdl.handle.net/11427/16060 en_ZA
dc.identifier.vancouvercitation Costa DP, Robinson PW, Arnould JPY, Harrison A, Simmons SE, Hassrick JL, et al. Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS. PLoS One. 2010; http://hdl.handle.net/11427/16060. en_ZA
dc.identifier.ris TY - Journal Article AU - Costa, Daniel P AU - Robinson, Patrick W AU - Arnould, John P Y AU - Harrison, Autumn-Lynn AU - Simmons, Samantha E AU - Hassrick, Jason L AU - Hoskins, Andrew J AU - Kirkman, Stephen P AU - Oosthuizen, Herman AU - Villegas-Amtmann, Stella AB - 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. DA - 2010 DB - OpenUCT DO - 10.1371/journal.pone.0008677 DP - University of Cape Town J1 - PLoS One LK - https://open.uct.ac.za PB - University of Cape Town PY - 2010 T1 - Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS TI - Accuracy of ARGOS locations of pinnipeds at-sea estimated using Fastloc GPS UR - http://hdl.handle.net/11427/16060 ER - en_ZA


Files in this item

This item appears in the following Collection(s)

Show simple item record

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. Except where otherwise noted, this item's license is described as This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.