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dc.date.accessioned 2022-08-05T17:56:48Z
dc.date.available 2022-08-05T17:56:48Z
dc.date.issued 2018-01
dc.identifier.uri http://sedici.unlp.edu.ar/handle/10915/140061
dc.description.abstract We excavated active and abandoned Adelie Penguin (Pygoscelis adeliae) colonies at Seymour Island and Hope Bay, Antarctic Peninsula, to determine an occupation history for this species at these sites. Previous research at Hope Bay has indicated an occupation there since the middle Holocene, based on a sediment record from Lake Boeckella. Excavations revealed only shallow and relatively fresh ornithogenic soils in the active colonies at the two localities. At least 53 abandoned pebble mounds were located at Hope Bay of which nine were excavated and four were sampled by probing to recover organic remains to determine their age. Radiocarbon dating of egg membrane, feather, and bone from both sites revealed a young occupation dating to less than ~600 years after correcting for the marine carbon reservoir effect. The mismatch in the geologic record of Adelie Penguin occupation in the northern Antarctic Peninsula, including Lake Boeckella sediments and geologic deposits and lake sediments on King George Island, with more direct evidence of breeding colonies from ornithogenic soils from active and abandoned colonies is hereby referred to as the ‘northern enigma’ as it does not occur in other regions of Antarctica including the southern Antarctic Peninsula, East Antarctica, or the Ross Sea, where the penguin record extends to the early to middle Holocene and matches well with the geologic record of deglaciation and penguin occupation. As yet, there is no convincing explanation for the ‘northern enigma’. en
dc.format.extent 71-77 es
dc.language en es
dc.subject Adélie Penguin es
dc.subject Occupation history es
dc.subject Ornithogenic soils es
dc.subject Hope Bay es
dc.subject Seymour Island es
dc.title Recent occupation by Adélie Penguins (Pygoscelis adeliae) at Hope Bay and Seymour Island and the ‘northern enigma’ in the Antarctic Peninsula en
dc.type Articulo es
sedici.identifier.other doi:10.1007/s00300-017-2170-8 es
sedici.identifier.issn 0722-4060 es
sedici.identifier.issn 1432-2056 es
sedici.creator.person Emslie, Steven D. es
sedici.creator.person McKenzie, Ashley es
sedici.creator.person Marti, Lucas J. es
sedici.creator.person Santos, María Mercedes es
sedici.subject.materias Ciencias Naturales es
sedici.description.fulltext true es
mods.originInfo.place Facultad de Ciencias Naturales y Museo es
sedici.subtype Articulo es
sedici.rights.license Creative Commons Attribution 4.0 International (CC BY 4.0)
sedici.rights.uri http://creativecommons.org/licenses/by/4.0/
sedici.description.peerReview peer-review es
sedici.workflowEdited true es
sedici.relation.journalTitle Polar Biology es
sedici.relation.journalVolumeAndIssue vol. 41, no. 1 es

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Creative Commons Attribution 4.0 International (CC BY 4.0) Except where otherwise noted, this item's license is described as Creative Commons Attribution 4.0 International (CC BY 4.0)