Accuracy of ARGOS Locations of Pinnipeds at-Sea Estimated Using Fastloc GPS
Publication Date
January 15, 2010
Journal
PLOS ONE
Authors
Daniel P. Costa, Patrick W. Robinson, John P. Y. Arnould, Autumn Lynn Harrison, et al
Volume
5
Issue
1
Pages
e8677
DOI
https://dx.plos.org/10.1371/journal.pone.0008677
Publisher URL
http://journals.plos.org/plosone/article?id=10.1371%2Fjournal.pone.0008677
PubMed
http://www.ncbi.nlm.nih.gov/pubmed/20090942
PubMed Central
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2806907
Europe PMC
http://europepmc.org/abstract/MED/20090942
Web of Science
000273714900001
Scopus
77649294005
Mendeley
http://www.mendeley.com/research/accuracy-argos-locations-pinnipeds-atsea-estimated-using-fastloc-gps
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Mendeley | Further Information

{"title"=>"Accuracy of ARGOS locations of pinnipeds at-sea estimated using fastloc GPS", "type"=>"journal", "authors"=>[{"first_name"=>"Daniel P.", "last_name"=>"Costa", "scopus_author_id"=>"24346625300"}, {"first_name"=>"Patrick W.", "last_name"=>"Robinson", "scopus_author_id"=>"26321978600"}, {"first_name"=>"John P.Y.", "last_name"=>"Arnould", "scopus_author_id"=>"7007039027"}, {"first_name"=>"Autumn Lynn", "last_name"=>"Harrison", "scopus_author_id"=>"36021181800"}, {"first_name"=>"Samantha E.", "last_name"=>"Simmons", "scopus_author_id"=>"16043758800"}, {"first_name"=>"Jason L.", "last_name"=>"Hassrick", "scopus_author_id"=>"16042194800"}, {"first_name"=>"Andrew J.", "last_name"=>"Hoskins", "scopus_author_id"=>"25225685700"}, {"first_name"=>"Stephen P.", "last_name"=>"Kirkman", "scopus_author_id"=>"7003751787"}, {"first_name"=>"Herman", "last_name"=>"Oosthuizen", "scopus_author_id"=>"8980510500"}, {"first_name"=>"Stella", "last_name"=>"Villegas-Amtmann", "scopus_author_id"=>"24554386600"}, {"first_name"=>"Daniel E.", "last_name"=>"Crocker", "scopus_author_id"=>"7005955706"}], "year"=>2010, "source"=>"PLoS ONE", "identifiers"=>{"pui"=>"358404062", "sgr"=>"77649294005", "issn"=>"19326203", "pmid"=>"20090942", "scopus"=>"2-s2.0-77649294005", "doi"=>"10.1371/journal.pone.0008677", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)"}, "id"=>"c5ec71a7-88f6-37e9-871e-166d2bd18cc9", "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.", "link"=>"http://www.mendeley.com/research/accuracy-argos-locations-pinnipeds-atsea-estimated-using-fastloc-gps", "reader_count"=>225, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>3, "Librarian"=>1, "Researcher"=>63, "Student > Doctoral Student"=>14, "Student > Ph. D. Student"=>44, "Student > Postgraduate"=>12, "Other"=>12, "Student > Master"=>39, "Student > Bachelor"=>26, "Lecturer"=>1, "Lecturer > Senior Lecturer"=>3, "Professor"=>4}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>3, "Librarian"=>1, "Researcher"=>63, "Student > Doctoral Student"=>14, "Student > Ph. D. 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CrossRef

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/867465"], "description"=>"<p>Note: Percentile and mean values are presented.</p>", "links"=>[], "tags"=>["argos", "indicates"], "article_id"=>537915, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.t004", "stats"=>{"downloads"=>1, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_ARGOS_error_from_different_studies_If_two_values_are_present_in_a_cell_this_indicates_8216_latitude_longitude_8217_/537915", "title"=>"Comparison of ARGOS error from different studies. (If two values are present in a cell, this indicates ‘latitude/longitude’).", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-01-15 02:11:55"}
  • {"files"=>["https://ndownloader.figshare.com/files/867190"], "description"=>"<p>Data are log+1 transformed (negative values were reflected before transformation).</p>", "links"=>[], "tags"=>["provides", "argos", "standardized"], "article_id"=>537644, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g006", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_This_figure_provides_the_ARGOS_error_as_standardized_to_a_fixed_location_N_8202_8202_1105_/537644", "title"=>"This figure provides the ARGOS error as standardized to a fixed location (N = 1105).", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:07:24"}
  • {"files"=>["https://ndownloader.figshare.com/files/867255"], "description"=>"<p><b>A.</b> The mean spatial error for each location class is provided for two species that exhibit different surfacing behaviors. Spatial errors from northern elephant seals were large relative to California sea lions, particularly for “A” and “B” locations, which were the most common for the northern elephant seals. <b>B.</b> The mean spatial error for each location class is provided for two closely related species at different latitudes. These data show a negligible impact of latitude on ARGOS location error.</p>", "links"=>[], "tags"=>["ecology/behavioral ecology", "ecology/marine and freshwater ecology", "ecology/physiological ecology", "ecology/spatial and landscape ecology"], "article_id"=>537703, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g007", "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Figure_7_/537703", "title"=>"Figure 7", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:08:23"}
  • {"files"=>["https://ndownloader.figshare.com/files/867337"], "description"=>"<p>The mean ARGOS error in kilometers along with the standard deviation and sample size for each of the ARGOS location classes summarized for each of the 5 species of pinnipeds.</p>", "links"=>[], "tags"=>["argos", "kilometers", "deviation", "classes", "summarized"], "article_id"=>537781, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.t001", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_mean_ARGOS_error_in_kilometers_along_with_the_standard_deviation_and_sample_size_for_each_of_the_ARGOS_location_classes_summarized_for_each_of_the_5_species_of_pinnipeds_/537781", "title"=>"The mean ARGOS error in kilometers along with the standard deviation and sample size for each of the ARGOS location classes summarized for each of the 5 species of pinnipeds.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-01-15 02:09:41"}
  • {"files"=>["https://ndownloader.figshare.com/files/867382"], "description"=>"<p>Parameters describing lognormal probability distribution for the distance (km) of ARGOS error for each location class.</p>", "links"=>[], "tags"=>["describing", "lognormal", "probability", "argos"], "article_id"=>537830, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.t002", "stats"=>{"downloads"=>0, "page_views"=>5, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Parameters_describing_lognormal_probability_distribution_for_the_distance_km_of_ARGOS_error_for_each_location_class_/537830", "title"=>"Parameters describing lognormal probability distribution for the distance (km) of ARGOS error for each location class.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-01-15 02:10:30"}
  • {"files"=>["https://ndownloader.figshare.com/files/867137"], "description"=>"<p>Red bars represent the 68% error as estimated by ARGOS. Note the log-scaling of the y-axis.</p>", "links"=>[], "tags"=>["whisker", "argos"], "article_id"=>537588, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g005", "stats"=>{"downloads"=>0, "page_views"=>10, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_A_box_and_whisker_plot_of_the_ARGOS_error_associated_with_each_location_class_is_given_in_this_figure_/537588", "title"=>"A box and whisker plot of the ARGOS error associated with each location class is given in this figure.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:06:28"}
  • {"files"=>["https://ndownloader.figshare.com/files/867070"], "description"=>"<p>East/west offsets were frequent relative to north/south offsets.</p>", "links"=>[], "tags"=>["argos", "locations"], "article_id"=>537521, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g004", "stats"=>{"downloads"=>0, "page_views"=>7, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_frequency_distribution_of_the_error_in_ARGOS_locations_are_provided_in_this_figure_/537521", "title"=>"The frequency distribution of the error in ARGOS locations are provided in this figure.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:05:21"}
  • {"files"=>["https://ndownloader.figshare.com/files/866839"], "description"=>"<p>All filtered locations are presented in this figure, while the comparison between ARGOS and GPS used only locations that were obtained within 5 min of each other.</p>", "links"=>[], "tags"=>["cape", "africa", "argos", "fastloc", "gps"], "article_id"=>537282, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g001", "stats"=>{"downloads"=>1, "page_views"=>9, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_A_representative_track_of_a_female_Cape_fur_seal_off_the_western_coast_of_South_Africa_obtained_using_ARGOS_black_or_Fastloc_GPS_yellow_tags_/537282", "title"=>"A representative track of a female Cape fur seal off the western coast of South Africa obtained using ARGOS (black) or Fastloc GPS (yellow) tags.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:01:22"}
  • {"files"=>["https://ndownloader.figshare.com/files/866937"], "description"=>"<p>The cumulative frequency of GPS errors from a stationary test of fast-loc GPS tags (N = 257) are shown.</p>", "links"=>[], "tags"=>["cumulative", "gps", "errors", "stationary", "fast-loc", "tags"], "article_id"=>537377, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g002", "stats"=>{"downloads"=>0, "page_views"=>8, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_cumulative_frequency_of_GPS_errors_from_a_stationary_test_of_fast_loc_GPS_tags_N_8202_8202_257_are_shown_/537377", "title"=>"The cumulative frequency of GPS errors from a stationary test of fast-loc GPS tags (N = 257) are shown.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:02:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/867426"], "description"=>"<p>Summarizes the species, sample size, location and duration of deployment and the data obtained for that species, along with data on their diving behavior.</p>", "links"=>[], "tags"=>["duration", "deployment", "diving"], "article_id"=>537872, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.t003", "stats"=>{"downloads"=>0, "page_views"=>3, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Summarizes_the_species_sample_size_location_and_duration_of_deployment_and_the_data_obtained_for_that_species_along_with_data_on_their_diving_behavior_/537872", "title"=>"Summarizes the species, sample size, location and duration of deployment and the data obtained for that species, along with data on their diving behavior.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-01-15 02:11:12"}
  • {"files"=>["https://ndownloader.figshare.com/files/430948"], "description"=>"<div><h3>Background</h3><p>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.</p><h3>Methodology/Principal Findings</h3><p>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 (<em>Zalophus californianus</em>), 4 Galapagos sea lions (<em>Zalophus wollebaeki</em>), 6 Cape fur seals (<em>Arctocephalus pusillus pusillus</em>), 3 Australian fur seals (<em>A. p. doriferus</em>) and 5 northern elephant seals (<em>Mirounga angustirostris</em>). These species encompass a range of marine habitats (highly pelagic <em>vs</em> 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<sup>th</sup> 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.</p><h3>Conclusions/Significance</h3><p>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 (<a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0008677#pone.0008677.s001\">S1</a>) 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.</p></div>", "links"=>[], "tags"=>["argos", "locations", "pinnipeds", "at-sea", "fastloc", "gps"], "article_id"=>145049, "categories"=>["Ecology", "Cancer"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677", "stats"=>{"downloads"=>2, "page_views"=>15, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Accuracy_of_ARGOS_Locations_of_Pinnipeds_at_Sea_Estimated_Using_Fastloc_GPS/145049", "title"=>"Accuracy of ARGOS Locations of Pinnipeds at-Sea Estimated Using Fastloc GPS", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2010-01-15 01:24:09"}
  • {"files"=>["https://ndownloader.figshare.com/files/866997"], "description"=>"<p>Note the logarithmic scaling of the lower panel and linear scaling of the upper panel.</p>", "links"=>[], "tags"=>["argos", "offset", "compared", "gps", "locations"], "article_id"=>537441, "categories"=>["Ecology", "Infectious Diseases"], "users"=>["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"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0008677.g003", "stats"=>{"downloads"=>0, "page_views"=>4, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_The_ARGOS_error_measured_as_offset_from_the_8220_true_8221_position_of_the_animal_as_compared_to_GPS_locations_are_given_in_this_figure_/537441", "title"=>"The ARGOS error measured as offset from the “true” position of the animal as compared to GPS locations are given in this figure.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2010-01-15 02:04:01"}

PMC Usage Stats | Further Information

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Relative Metric

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