Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)
Carbon and nitrogen stable isotope analyses were performed on modern and Holocene Adélie penguin guano samples collected from ornithogenic soils along the Scott Coast (Southern Victoria Land, Antarctica), from Cape Irizar to Dunlop Island, and at Cape Bird (Ross Island). Guano samples also were siev...
Published in: | Palaeogeography, Palaeoclimatology, Palaeoecology |
---|---|
Main Authors: | , , , , , |
Other Authors: | , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
2014
|
Subjects: | |
Online Access: | http://hdl.handle.net/11568/335267 https://doi.org/10.1016/j.palaeo.2013.12.014 |
id |
ftunivpisairis:oai:arpi.unipi.it:11568/335267 |
---|---|
record_format |
openpolar |
spelling |
ftunivpisairis:oai:arpi.unipi.it:11568/335267 2023-11-12T03:59:38+01:00 Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) Lorenzini S. Baneschi I. Fallick A. E. Hall B. L. BARONI, CARLO SALVATORE, MARIA CRISTINA Lorenzini, S. Baroni, Carlo Baneschi, I. Salvatore, MARIA CRISTINA Fallick, A. E. Hall, B. L. 2014 STAMPA http://hdl.handle.net/11568/335267 https://doi.org/10.1016/j.palaeo.2013.12.014 eng eng info:eu-repo/semantics/altIdentifier/wos/WOS:000333494600003 volume:395 firstpage:21 lastpage:28 numberofpages:8 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://hdl.handle.net/11568/335267 doi:10.1016/j.palaeo.2013.12.014 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84891900617 Adelie penguin Ornithogenic soil Paleoenvironment Stable isotope Paleoclimate Antarctica info:eu-repo/semantics/article 2014 ftunivpisairis https://doi.org/10.1016/j.palaeo.2013.12.014 2023-10-17T21:50:58Z Carbon and nitrogen stable isotope analyses were performed on modern and Holocene Adélie penguin guano samples collected from ornithogenic soils along the Scott Coast (Southern Victoria Land, Antarctica), from Cape Irizar to Dunlop Island, and at Cape Bird (Ross Island). Guano samples also were sieved and sorted under stereomicroscope in order to select penguin dietary remains, such as fish bones and otoliths. Carbon and nitrogen stable isotope composition, coupled with the taxonomic identification of fish otoliths from Scott Coast Holocene samples, indicated a mainly fish-based diet for this area, with Pleuragramma antarcticum as the most eaten prey throughout the investigated period (from 390 cal BP to ca 7300 cal BP). The isotopic values of Ross Island samples (from modern to 3850 cal BP) showed a krill consumption increase in the samples younger than 2000 cal BP, with the maximum in modern samples. Scott Coast and Ross Island Holocene samples showed δ 13 C and δ15N trends similar to those previously published from Terra Nova Bay(northern Victoria Land), whereas modern samples from Ross Island have similar δ15N composition but different δ13 C values. This δ 13C divergence started at ca 2000 BP and follows the abandonment of the Scott Coast colonies. The δ 13 C trend observed in Ross Island and Terra Nova Bay samples and the abandonment of the Scott Coast colonies could suggest the stability and the persistence of the previous oceanographic conditions (i.e. polynya) for the Terra Nova Bay area and the establishment of new conditions for water circulation in the Southern Ross Sea since ~2000 BP when persistent sea-ice sealed the Scott Coast. Article in Journal/Newspaper Adelie penguin Antarc* Antarctica Ross Island Ross Sea Sea ice Victoria Land ARPI - Archivio della Ricerca dell'Università di Pisa Cape Bird ENVELOPE(-38.060,-38.060,-54.004,-54.004) Cape Irizar ENVELOPE(-60.708,-60.708,-62.979,-62.979) Dunlop ENVELOPE(163.450,163.450,-77.233,-77.233) Dunlop Island ENVELOPE(163.500,163.500,-77.233,-77.233) Guano ENVELOPE(141.604,141.604,-66.775,-66.775) Irizar ENVELOPE(162.950,162.950,-75.550,-75.550) Island Guano ENVELOPE(141.600,141.600,-66.767,-66.767) Ross Island Ross Sea Scott Coast ENVELOPE(162.500,162.500,-76.500,-76.500) Terra Nova Bay Victoria Land Palaeogeography, Palaeoclimatology, Palaeoecology 395 21 28 |
institution |
Open Polar |
collection |
ARPI - Archivio della Ricerca dell'Università di Pisa |
op_collection_id |
ftunivpisairis |
language |
English |
topic |
Adelie penguin Ornithogenic soil Paleoenvironment Stable isotope Paleoclimate Antarctica |
spellingShingle |
Adelie penguin Ornithogenic soil Paleoenvironment Stable isotope Paleoclimate Antarctica Lorenzini S. Baneschi I. Fallick A. E. Hall B. L. BARONI, CARLO SALVATORE, MARIA CRISTINA Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
topic_facet |
Adelie penguin Ornithogenic soil Paleoenvironment Stable isotope Paleoclimate Antarctica |
description |
Carbon and nitrogen stable isotope analyses were performed on modern and Holocene Adélie penguin guano samples collected from ornithogenic soils along the Scott Coast (Southern Victoria Land, Antarctica), from Cape Irizar to Dunlop Island, and at Cape Bird (Ross Island). Guano samples also were sieved and sorted under stereomicroscope in order to select penguin dietary remains, such as fish bones and otoliths. Carbon and nitrogen stable isotope composition, coupled with the taxonomic identification of fish otoliths from Scott Coast Holocene samples, indicated a mainly fish-based diet for this area, with Pleuragramma antarcticum as the most eaten prey throughout the investigated period (from 390 cal BP to ca 7300 cal BP). The isotopic values of Ross Island samples (from modern to 3850 cal BP) showed a krill consumption increase in the samples younger than 2000 cal BP, with the maximum in modern samples. Scott Coast and Ross Island Holocene samples showed δ 13 C and δ15N trends similar to those previously published from Terra Nova Bay(northern Victoria Land), whereas modern samples from Ross Island have similar δ15N composition but different δ13 C values. This δ 13C divergence started at ca 2000 BP and follows the abandonment of the Scott Coast colonies. The δ 13 C trend observed in Ross Island and Terra Nova Bay samples and the abandonment of the Scott Coast colonies could suggest the stability and the persistence of the previous oceanographic conditions (i.e. polynya) for the Terra Nova Bay area and the establishment of new conditions for water circulation in the Southern Ross Sea since ~2000 BP when persistent sea-ice sealed the Scott Coast. |
author2 |
Lorenzini, S. Baroni, Carlo Baneschi, I. Salvatore, MARIA CRISTINA Fallick, A. E. Hall, B. L. |
format |
Article in Journal/Newspaper |
author |
Lorenzini S. Baneschi I. Fallick A. E. Hall B. L. BARONI, CARLO SALVATORE, MARIA CRISTINA |
author_facet |
Lorenzini S. Baneschi I. Fallick A. E. Hall B. L. BARONI, CARLO SALVATORE, MARIA CRISTINA |
author_sort |
Lorenzini S. |
title |
Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
title_short |
Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
title_full |
Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
title_fullStr |
Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
title_full_unstemmed |
Adelie Penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) |
title_sort |
adelie penguin dietary remains reveal holocene environmental changes in the western ross sea (antarctica) |
publishDate |
2014 |
url |
http://hdl.handle.net/11568/335267 https://doi.org/10.1016/j.palaeo.2013.12.014 |
long_lat |
ENVELOPE(-38.060,-38.060,-54.004,-54.004) ENVELOPE(-60.708,-60.708,-62.979,-62.979) ENVELOPE(163.450,163.450,-77.233,-77.233) ENVELOPE(163.500,163.500,-77.233,-77.233) ENVELOPE(141.604,141.604,-66.775,-66.775) ENVELOPE(162.950,162.950,-75.550,-75.550) ENVELOPE(141.600,141.600,-66.767,-66.767) ENVELOPE(162.500,162.500,-76.500,-76.500) |
geographic |
Cape Bird Cape Irizar Dunlop Dunlop Island Guano Irizar Island Guano Ross Island Ross Sea Scott Coast Terra Nova Bay Victoria Land |
geographic_facet |
Cape Bird Cape Irizar Dunlop Dunlop Island Guano Irizar Island Guano Ross Island Ross Sea Scott Coast Terra Nova Bay Victoria Land |
genre |
Adelie penguin Antarc* Antarctica Ross Island Ross Sea Sea ice Victoria Land |
genre_facet |
Adelie penguin Antarc* Antarctica Ross Island Ross Sea Sea ice Victoria Land |
op_relation |
info:eu-repo/semantics/altIdentifier/wos/WOS:000333494600003 volume:395 firstpage:21 lastpage:28 numberofpages:8 journal:PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY http://hdl.handle.net/11568/335267 doi:10.1016/j.palaeo.2013.12.014 info:eu-repo/semantics/altIdentifier/scopus/2-s2.0-84891900617 |
op_doi |
https://doi.org/10.1016/j.palaeo.2013.12.014 |
container_title |
Palaeogeography, Palaeoclimatology, Palaeoecology |
container_volume |
395 |
container_start_page |
21 |
op_container_end_page |
28 |
_version_ |
1782332302743830528 |