http://www.cnr.it/ontology/cnr/individuo/prodotto/ID302327

Adelie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) (Articolo in rivista)

Type

Articolo in rivista (Classe)
Prodotto della ricerca (Classe)

Label

Adelie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) (Articolo in rivista) (literal)

Anno

2014-01-01T00:00:00+01:00 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi

10.1016/j.palaeo.2013.12.014 (literal)

Alternative label

Lorenzini S.[1], Baroni C.[1,2], Baneschi I.[2], Salvatore M.C.[1], Fallick A.E.[3], Hall B.L.[4] (2014)
Adelie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)
in Palaeogeography, palaeoclimatology, palaeoecology; Elsevier, Amsterdam (Paesi Bassi)
(literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori

Lorenzini S.[1], Baroni C.[1,2], Baneschi I.[2], Salvatore M.C.[1], Fallick A.E.[3], Hall B.L.[4] (literal)

Pagina inizio

21 (literal)

Pagina fine

28 (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url

http://www.journals.elsevier.com/palaeogeography-palaeoclimatology-palaeoecology/ (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume

395 (literal)

Rivista

Palaeogeography, palaeoclimatology, palaeoecology (Rivista)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali

8 (literal)

Note

ISI Web of Science (WOS) (literal)

Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni

[1] Dipartimento di Scienze della Terra, Università degli Studi di Pisa, Pisa, Italy [2] Istituto di Geoscienze e Georisorse, Consiglio Nazionale delle Ricerche, Pisa, Italy [3] Scottish Universities Environmental Research Centre, East Kilbride G75 0QF, Scotland, UK [4] School of Earth and Climate Sciences and the Climate Change Institute, University of Maine, Orono, ME 04469 USA (literal)

Titolo

Adelie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica) (literal)

Abstract

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 ?13C and ?15N trends similar to those previously published from Terra Nova Bay (northern Victoria Land), whereas modern samples from Ross Island have similar ?15N composition but different ?13C values. This ?13C divergence started at ca 2000 BP and follows the abandonment of the Scott Coast colonies. The ?13C 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. (literal)

Editore