Solving a Migration Riddle Using Isoscapes: House Martins from a Dutch Village Winter over West Africa
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{"title"=>"Solving a Migration Riddle Using Isoscapes: House Martins from a Dutch Village Winter over West Africa", "type"=>"journal", "authors"=>[{"first_name"=>"Keith A.", "last_name"=>"Hobson", "scopus_author_id"=>"7102130230"}, {"first_name"=>"Steven L.", "last_name"=>"van Wilgenburg", "scopus_author_id"=>"6506695807"}, {"first_name"=>"Theunis", "last_name"=>"Piersma", "scopus_author_id"=>"7005941801"}, {"first_name"=>"Leonard I.", "last_name"=>"Wassenaar", "scopus_author_id"=>"7003470434"}], "year"=>2012, "source"=>"PLoS ONE", "identifiers"=>{"sgr"=>"84866722466", "doi"=>"10.1371/journal.pone.0045005", "pui"=>"365719715", "pmid"=>"23028734", "scopus"=>"2-s2.0-84866722466", "issn"=>"19326203", "isbn"=>"1932-6203 (Electronic)\\r1932-6203 (Linking)"}, "id"=>"a8d96e9c-b5c2-3416-a8cb-76c60b0257e2", "abstract"=>"BACKGROUND: The ability to connect breeding, stopover and wintering locations of populations of migratory birds greatly enhances our understanding of the phenomenon of migration and improves our chances of effectively conserving these species. Among Palearctic-Afrotropical migratory species, aerial insectivores like the house martin (Delichon urbicum) are sensitive to factors influencing the availability of flying insects, and have declined in recent decades. The strict aerial behaviour of martins severely limits ring recoveries on wintering grounds and so there is a dearth of information on where European breeding populations over-winter in Africa, and the relative effects of population regulation on breeding vs. wintering grounds. We used a newly developed multi-isotope (δ(2)H, δ(13)C, δ(15)N) feather isoscape for Africa together with inferences from summarized ring return data based on longitude, to assign winter origins to birds captured at a breeding colony in The Netherlands.\\n\\nPRINCIPAL FINDINGS: Based on isotopic analyses of winter-grown martin feathers, we used a likelihood-based assignment approach to describe potential wintering locations where molt occurred of individual house martins from a Dutch colony by assigning them to four potential isotopically distinct clusters in Africa. We found the overwhelming majority of Dutch martins were assigned to a geographical cluster associated with West Africa.\\n\\nCONCLUSIONS/SIGNIFICANCE: The existence of strong isotopic gradients and patterns in African foodwebs that support migratory wildlife allows for the spatial assignment of tissues grown there. The assignment of Dutch house martins to wintering grounds primarily in West Africa was in strong agreement with independent and indirect methods used to infer winter origins of this species based on the association between the Normalized Difference Vegetation Index (NDVI) in Africa and population patterns in Italy and the United Kingdom. These confirmatory data-sets underscore the importance of suitable habitats in West Africa to the conservation of migratory aerial insectivores and other species.", "link"=>"http://www.mendeley.com/research/solving-migration-riddle-using-isoscapes-house-martins-dutch-village-winter-west-africa", "reader_count"=>65, "reader_count_by_academic_status"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Librarian"=>1, "Student > Doctoral Student"=>4, "Researcher"=>14, "Student > Ph. D. Student"=>21, "Student > Postgraduate"=>2, "Student > Master"=>13, "Other"=>2, "Student > Bachelor"=>4}, "reader_count_by_user_role"=>{"Unspecified"=>3, "Professor > Associate Professor"=>1, "Librarian"=>1, "Student > Doctoral Student"=>4, "Researcher"=>14, "Student > Ph. D. Student"=>21, "Student > Postgraduate"=>2, "Student > Master"=>13, "Other"=>2, "Student > Bachelor"=>4}, "reader_count_by_subject_area"=>{"Unspecified"=>3, "Environmental Science"=>7, "Biochemistry, Genetics and Molecular Biology"=>1, "Agricultural and Biological Sciences"=>49, "Medicine and Dentistry"=>1, "Earth and Planetary Sciences"=>3, "Economics, Econometrics and Finance"=>1}, "reader_count_by_subdiscipline"=>{"Medicine and Dentistry"=>{"Medicine and Dentistry"=>1}, "Earth and Planetary Sciences"=>{"Earth and Planetary Sciences"=>3}, "Economics, Econometrics and Finance"=>{"Economics, Econometrics and Finance"=>1}, "Agricultural and Biological Sciences"=>{"Agricultural and Biological Sciences"=>49}, "Biochemistry, Genetics and Molecular Biology"=>{"Biochemistry, Genetics and Molecular Biology"=>1}, "Unspecified"=>{"Unspecified"=>3}, "Environmental Science"=>{"Environmental Science"=>7}}, "reader_count_by_country"=>{"Romania"=>1, "United States"=>4, "Brazil"=>1, "United Kingdom"=>1, "Mexico"=>1}, "group_count"=>2}

Scopus | Further Information

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Figshare

  • {"files"=>["https://ndownloader.figshare.com/files/572027"], "description"=>"<p>Ordinary least squares regression is shown (solid line) with 95% prediction intervals (gray dashes).</p>", "links"=>[], "tags"=>["longitude", "ringing", "21", "trans-sahara", "martin"], "article_id"=>242517, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Keith A. Hobson", "Steven L. Van Wilgenburg", "Theunis Piersma", "Leonard I. Wassenaar"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0045005.g002", "stats"=>{"downloads"=>1, "page_views"=>6, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Relationship_between_longitude_of_ringing_versus_longitude_of_recovery_for_21_trans_Sahara_house_martin_ring_recoveries_/242517", "title"=>"Relationship between longitude of ringing versus longitude of recovery for 21 trans-Sahara house martin ring-recoveries.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2012-09-21 00:41:57"}
  • {"files"=>["https://ndownloader.figshare.com/files/572191"], "description"=>"<p>Isotopic clusters are from <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0045005#pone.0045005-Hobson1\" target=\"_blank\">[10]</a>. Solid line depicts predicted mean wintering longitude for birds sampled in Gaast, The Netherlands and dashed lines indicate 95% prediction interval around the mean. Predicted wintering longitude and 95% prediction intervals were derived from data in <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0045005#pone-0045005-g002\" target=\"_blank\">Figure 2</a>.</p>", "links"=>[], "tags"=>["clusters", "africa", "martin"], "article_id"=>242681, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Keith A. Hobson", "Steven L. Van Wilgenburg", "Theunis Piersma", "Leonard I. Wassenaar"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0045005.g003", "stats"=>{"downloads"=>0, "page_views"=>2, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Isotopic_clusters_of_Africa_to_which_the_house_martin_sample_data_were_assigned_/242681", "title"=>"Isotopic clusters of Africa to which the house martin sample data were assigned.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2012-09-21 00:44:41"}
  • {"files"=>["https://ndownloader.figshare.com/files/302138", "https://ndownloader.figshare.com/files/302242", "https://ndownloader.figshare.com/files/302302", "https://ndownloader.figshare.com/files/302388"], "description"=>"<div><h3>Background</h3><p>The ability to connect breeding, stopover and wintering locations of populations of migratory birds greatly enhances our understanding of the phenomenon of migration and improves our chances of effectively conserving these species. Among Palearctic-Afrotropical migratory species, aerial insectivores like the house martin (<em>Delichon urbicum</em>) are sensitive to factors influencing the availability of flying insects, and have declined in recent decades. The strict aerial behaviour of martins severely limits ring recoveries on wintering grounds and so there is a dearth of information on where European breeding populations over-winter in Africa, and the relative effects of population regulation on breeding vs. wintering grounds. We used a newly developed multi-isotope (<em>δ</em><sup>2</sup>H, <em>δ</em><sup>13</sup>C, <em>δ</em><sup>15</sup>N) feather isoscape for Africa together with inferences from summarized ring return data based on longitude, to assign winter origins to birds captured at a breeding colony in The Netherlands.</p> <h3>Principal Findings</h3><p>Based on isotopic analyses of winter-grown martin feathers, we used a likelihood-based assignment approach to describe potential wintering locations where molt occurred of individual house martins from a Dutch colony by assigning them to four potential isotopically distinct clusters in Africa. We found the overwhelming majority of Dutch martins were assigned to a geographical cluster associated with West Africa.</p> <h3>Conclusions/Significance</h3><p>The existence of strong isotopic gradients and patterns in African foodwebs that support migratory wildlife allows for the spatial assignment of tissues grown there. The assignment of Dutch house martins to wintering grounds primarily in West Africa was in strong agreement with independent and indirect methods used to infer winter origins of this species based on the association between the Normalized Difference Vegetation Index (NDVI) in Africa and population patterns in Italy and the United Kingdom. These confirmatory data-sets underscore the importance of suitable habitats in West Africa to the conservation of migratory aerial insectivores and other species.</p> </div>", "links"=>[], "tags"=>["solving", "riddle", "martins", "dutch", "africa"], "article_id"=>119585, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Keith A. Hobson", "Steven L. Van Wilgenburg", "Theunis Piersma", "Leonard I. Wassenaar"], "doi"=>["https://dx.doi.org/10.1371/journal.pone.0045005.s001", "https://dx.doi.org/10.1371/journal.pone.0045005.s002", "https://dx.doi.org/10.1371/journal.pone.0045005.s003", "https://dx.doi.org/10.1371/journal.pone.0045005.s004"], "stats"=>{"downloads"=>5, "page_views"=>12, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/Solving_a_Migration_Riddle_Using_Isoscapes_House_Martins_from_a_Dutch_Village_Winter_over_West_Africa/119585", "title"=>"Solving a Migration Riddle Using Isoscapes: House Martins from a Dutch Village Winter over West Africa", "pos_in_sequence"=>0, "defined_type"=>4, "published_date"=>"2012-09-21 02:39:45"}
  • {"files"=>["https://ndownloader.figshare.com/files/572313"], "description"=>"<p>Significant differences from Tukey’s multiple comparison tests are from a linear mixed-effects models (see <a href=\"http://www.plosone.org/article/info:doi/10.1371/journal.pone.0045005#s2\" target=\"_blank\">Methods</a>) are denoted using superscript letters.</p>", "links"=>[], "tags"=>["multi-isotopic", "aftrotropical", "grown", "martin", "feathers", "birds", "breeding", "netherlands", "2005"], "article_id"=>242797, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Keith A. Hobson", "Steven L. Van Wilgenburg", "Theunis Piersma", "Leonard I. Wassenaar"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0045005.t001", "stats"=>{"downloads"=>1, "page_views"=>18, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Comparison_of_the_multi_isotopic_composition_948_2_H_948_13_C_948_15_N_of_Aftrotropical_grown_house_martin_feathers_from_birds_breeding_in_The_Netherlands_from_2005_to_2010_/242797", "title"=>"Comparison of the multi-isotopic composition (<i>δ</i><sup>2</sup>H, <i>δ</i><sup>13</sup>C, <i>δ</i><sup>15</sup>N) of Aftrotropical grown house martin feathers from birds breeding in The Netherlands from 2005 to 2010.", "pos_in_sequence"=>0, "defined_type"=>3, "published_date"=>"2012-09-21 00:46:37"}
  • {"files"=>["https://ndownloader.figshare.com/files/571910"], "description"=>"<p>Variation in the isotopic composition of Aftrotropical grown house martin feathers from birds breeding in The Netherlands from 2005 to 2010 for A) <i>δ</i><sup>2</sup>H, B) <i>δ</i><sup>13</sup>C, C) <i>δ</i><sup>15</sup>N.</p>", "links"=>[], "tags"=>["isotopic", "aftrotropical", "grown", "martin", "feathers", "birds", "breeding", "netherlands", "2005", "2010"], "article_id"=>242399, "categories"=>["Ecology", "Evolutionary Biology"], "users"=>["Keith A. Hobson", "Steven L. Van Wilgenburg", "Theunis Piersma", "Leonard I. Wassenaar"], "doi"=>"https://dx.doi.org/10.1371/journal.pone.0045005.g001", "stats"=>{"downloads"=>1, "page_views"=>13, "likes"=>0}, "figshare_url"=>"https://figshare.com/articles/_Variation_in_the_isotopic_composition_of_Aftrotropical_grown_house_martin_feathers_from_birds_breeding_in_The_Netherlands_from_2005_to_2010_for_A_948_2_H_B_948_13_C_C_948_15_N_/242399", "title"=>"Variation in the isotopic composition of Aftrotropical grown house martin feathers from birds breeding in The Netherlands from 2005 to 2010 for A) <i>δ</i><sup>2</sup>H, B) <i>δ</i><sup>13</sup>C, C) <i>δ</i><sup>15</sup>N.", "pos_in_sequence"=>0, "defined_type"=>1, "published_date"=>"2012-09-21 00:39:59"}

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  • {"unique-ip"=>"1", "full-text"=>"0", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2018", "month"=>"5"}
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  • {"unique-ip"=>"2", "full-text"=>"1", "pdf"=>"1", "scanned-summary"=>"0", "scanned-page-browse"=>"0", "figure"=>"0", "supp-data"=>"0", "cited-by"=>"0", "year"=>"2019", "month"=>"4"}
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Relative Metric

{"start_date"=>"2012-01-01T00:00:00Z", "end_date"=>"2012-12-31T00:00:00Z", "subject_areas"=>[{"subject_area"=>"/Biology and life sciences", "average_usage"=>[322, 550, 671, 773, 864, 955, 1048, 1135, 1223, 1308, 1387, 1465, 1534, 1602, 1673, 1744, 1813, 1885, 1955, 2026, 2093, 2160, 2228, 2290, 2349]}, {"subject_area"=>"/Biology and life sciences/Organisms", "average_usage"=>[331, 557, 677, 777, 868, 960, 1050, 1136, 1223, 1307, 1390, 1466, 1536, 1603, 1673, 1741, 1814, 1889, 1954, 2028, 2096, 2164, 2233, 2305, 2362]}, {"subject_area"=>"/Biology and life sciences/Zoology", "average_usage"=>[360, 554, 661, 756, 829, 913, 992, 1072, 1144, 1228, 1306, 1378, 1439, 1500, 1558, 1627, 1689, 1754, 1826, 1892, 1951, 2009, 2067, 2130, 2200]}, {"subject_area"=>"/Earth sciences/Geography", "average_usage"=>[335, 517, 611, 697, 777, 866, 931, 1004, 1074, 1183, 1251, 1324, 1396, 1474, 1553, 1608, 1670, 1744, 1819, 1875, 1930, 2011, 2092, 2162, 2218]}, {"subject_area"=>"/People and places/Geographical locations", "average_usage"=>[318, 550, 661, 755, 847, 941, 1034, 1126, 1222, 1320, 1395, 1476, 1573, 1629, 1693, 1751, 1832, 1910, 1975, 2037, 2106, 2172, 2235, 2309, 2388]}, {"subject_area"=>"/Physical sciences/Physics", "average_usage"=>[298, 476, 578, 665, 743, 821, 891, 962, 1036, 1108, 1174, 1240, 1312, 1371, 1430, 1494, 1551, 1609, 1673, 1736, 1795, 1857, 1913, 1976, 2035]}]}
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