Emperors in Hiding: When Ice-Breakers and Satellites Complement Each Other in Antarctic Exploration
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{"title"=>"Emperors in hiding: When ice-breakers and satellites complement each other in Antarctic exploration", "type"=>"journal", "authors"=>[{"first_name"=>"André", "last_name"=>"Ancel", "scopus_author_id"=>"6603006603"}, {"first_name"=>"Robin", "last_name"=>"Cristofari", "scopus_author_id"=>"56218420500"}, {"first_name"=>"Peter T.", "last_name"=>"Fretwell", "scopus_author_id"=>"8785398400"}, {"first_name"=>"Phil N.", "last_name"=>"Trathan", "scopus_author_id"=>"7003343692"}, {"first_name"=>"Barbara", "last_name"=>"Wienecke", "scopus_author_id"=>"6701713772"}, {"first_name"=>"Matthieu", "last_name"=>"Boureau", "scopus_author_id"=>"55031931600"}, {"first_name"=>"Jennifer", "last_name"=>"Morinay", "scopus_author_id"=>"55973074700"}, {"first_name"=>"Stéphane", "last_name"=>"Blanc", "scopus_author_id"=>"7006670264"}, {"first_name"=>"Yvon", "last_name"=>"Le Maho", "scopus_author_id"=>"7006131359"}, {"first_name"=>"Céline", "last_name"=>"Le Bohec", "scopus_author_id"=>"6507149495"}], "year"=>2014, "source"=>"PLoS ONE", "identifiers"=>{"scopus"=>"2-s2.0-84903548636", "pmid"=>"24963661", "sgr"=>"84903548636", "doi"=>"10.1371/journal.pone.0100404", "isbn"=>"1932-6203", "issn"=>"19326203", "pui"=>"373419028"}, "id"=>"df2e8919-7bdd-3f8d-aec4-de4b64f40dc1", "abstract"=>"Evaluating the demographic trends of marine top predators is critical to understanding the processes involved in the ongoing rapid changes in Antarctic ecosystems. However, the remoteness and logistical complexity of operating in Antarctica, especially during winter, make such an assessment difficult. Satellite imaging is increasingly recognised as a valuable method for remote animal population monitoring, yet its accuracy and reliability are still to be fully evaluated. We report here the first ground visit of an emperor penguin colony first discovered by satellite, but also the discovery of a second one not indicated by satellite survey at that time. Several successive remote surveys in this coastal region of East Antarctica, both before and after sudden local changes, had indeed only identified one colony. These two colonies (with a total of ca. 7,400 breeding pairs) are located near the Mertz Glacier in an area that underwent tremendous habitat change after the glacier tongue broke off in February 2010. Our findings therefore suggest that a satellite survey, although offering a major advance since it allows a global imaging of emperor penguin colonies, may miss certain colony locations when challenged by certain features of polar ecosystems, such as snow cover, evolving ice topology, and rapidly changing habitat. Moreover our survey shows that this large seabird has considerable potential for rapid adaptation to sudden habitat loss, as the colony detected in 2009 may have moved and settled on new breeding grounds. Overall, the ability of emperor penguin colonies to relocate following habitat modification underlines the continued need for a mix of remote sensing and field surveys (aerial photography and ground counts), especially in the less-frequented parts of Antarctica, to gain reliable knowledge about the population demography and dynamics of this flagship species of the Antarctic ecosystem.", "link"=>"http://www.mendeley.com/research/emperors-hiding-icebreakers-satellites-complement-each-other-antarctic-exploration", "reader_count"=>25, "reader_count_by_academic_status"=>{"Unspecified"=>2, "Researcher"=>5, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>1, "Other"=>3, "Student > Master"=>4, "Student > Bachelor"=>2, "Lecturer"=>1}, "reader_count_by_user_role"=>{"Unspecified"=>2, "Researcher"=>5, "Student > Ph. D. Student"=>7, "Student > Postgraduate"=>1, "Other"=>3, "Student > Master"=>4, "Student > Bachelor"=>2, "Lecturer"=>1}, "reader_count_by_subject_area"=>{"Unspecified"=>1, "Environmental Science"=>8, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>9, "Sports and Recreations"=>1, "Computer Science"=>2, "Earth and Planetary Sciences"=>3}, "reader_count_by_subdiscipline"=>{"Sports and Recreations"=>{"Sports and Recreations"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>3}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>9}, "Computer Science"=>{"Computer Science"=>2}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>1}, "Environmental Science"=>{"Environmental Science"=>8}}, "reader_count_by_country"=>{"Brazil"=>1}, "group_count"=>0}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/1564828"], "description"=>"<p>Aerial view of the eastern emperor penguin colony (67°19′S, 145°52′E) showing adults and chicks present on November 1<sup>st</sup>, 2012. Photograph by Robin Cristofari, from an altitude of <i>ca.</i> 1,000 feet.</p>", "links"=>[], "tags"=>["ecology", "Marine ecology", "Population ecology", "emperor", "penguin"], "article_id"=>1083099, "categories"=>["Biological Sciences", "Ecology"], "users"=>["André Ancel", "Robin Cristofari", "Peter T. Fretwell", "Phil N. Trathan", "Barbara Wienecke", "Matthieu Boureau", "Jennifer Morinay", "Stephane Blanc", "Yvon Le Maho", "Céline Le Bohec"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0100404.g001"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Eastern_emperor_penguin_colony_/1083099", "title"=>"Eastern emperor penguin colony.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-06-25 03:28:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/1564829"], "description"=>"<p><b>A.</b> Location of the eastern colony (67°19′S, 145°52′E) on the sea-ice at the time of our visit and previous locations of the colony on top of icebergs, <i>ca.</i> 10 m high, covered with guano (arrow). <b>B & C.</b> Layers of droppings (arrows) covered by several layers of snow indicate abundant snow-covered episodes during the breeding season. Photographs by Robin Cristofari.</p>", "links"=>[], "tags"=>["ecology", "Marine ecology", "Population ecology", "emperor", "penguin"], "article_id"=>1083100, "categories"=>["Biological Sciences", "Ecology"], "users"=>["André Ancel", "Robin Cristofari", "Peter T. Fretwell", "Phil N. Trathan", "Barbara Wienecke", "Matthieu Boureau", "Jennifer Morinay", "Stephane Blanc", "Yvon Le Maho", "Céline Le Bohec"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0100404.g002"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Eastern_emperor_penguin_colony_/1083100", "title"=>"Eastern emperor penguin colony.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-06-25 03:28:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/1564830"], "description"=>"<p>Aerial view of the western emperor penguin colony (67°14′S, 145°30′E) showing adults and chicks present on November 2<sup>nd</sup>, 2012. Photograph by Robin Cristofari, from an altitude of <i>ca.</i> 1,000 feet.</p>", "links"=>[], "tags"=>["ecology", "Marine ecology", "Population ecology", "emperor", "penguin"], "article_id"=>1083101, "categories"=>["Biological Sciences", "Ecology"], "users"=>["André Ancel", "Robin Cristofari", "Peter T. Fretwell", "Phil N. Trathan", "Barbara Wienecke", "Matthieu Boureau", "Jennifer Morinay", "Stephane Blanc", "Yvon Le Maho", "Céline Le Bohec"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0100404.g003"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Western_emperor_penguin_colony_/1083101", "title"=>"Western emperor penguin colony.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-06-25 03:28:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/1564831"], "description"=>"<p>Circle area is proportional to colony size. Continent is on top, open sea at the bottom. <b>A.</b> Estimated location of the Mertz emperor penguin colony on November 13<sup>th</sup>, 2009 (red circle) on the eastern flank of the Glacier tongue. A large crack in the Mertz Glacier is visible (red arrow). The green circle corresponds to Pointe Géologie colony. <b>B.</b> Location of the two new colonies of emperor penguins on December 3<sup>rd</sup>, 2012 (blue circles), 2 years after the 2010 calving of the Glacier tongue. The berg (overall length of 80 km and a width of 40 km) broke off the Mertz Glacier after being rammed by another iceberg. The green circle corresponds to Pointe Géologie colony. Images downloaded from the USGS website (<a href=\"https://lta.cr.usgs.gov\" target=\"_blank\">https://lta.cr.usgs.gov</a>).</p>", "links"=>[], "tags"=>["ecology", "Marine ecology", "Population ecology", "images", "mertz"], "article_id"=>1083102, "categories"=>["Biological Sciences", "Ecology"], "users"=>["André Ancel", "Robin Cristofari", "Peter T. Fretwell", "Phil N. Trathan", "Barbara Wienecke", "Matthieu Boureau", "Jennifer Morinay", "Stephane Blanc", "Yvon Le Maho", "Céline Le Bohec"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0100404.g004"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Satellite_images_of_the_Mertz_Glacier_/1083102", "title"=>"Satellite images of the Mertz Glacier.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2014-06-25 03:28:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/1564832"], "description"=>"a<p>Breeding pairs were obtained by applying a pair-to-chick ratio of <i>ca.</i> 1.28 obtained from the emperor penguin colony at Pointe Géologie, Adélie Land.</p>", "links"=>[], "tags"=>["ecology", "Marine ecology", "Population ecology", "census", "mertz", "emperor", "penguin"], "article_id"=>1083103, "categories"=>["Biological Sciences", "Ecology"], "users"=>["André Ancel", "Robin Cristofari", "Peter T. Fretwell", "Phil N. Trathan", "Barbara Wienecke", "Matthieu Boureau", "Jennifer Morinay", "Stephane Blanc", "Yvon Le Maho", "Céline Le Bohec"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0100404.t001"], "stats"=>{"downloads"=>0, "page_views"=>0, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_2012_census_of_the_Mertz_emperor_penguin_colonies_/1083103", "title"=>"2012 census of the Mertz emperor penguin colonies.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2014-06-25 03:28:57"}

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