@article {52,
	title = {Ad{\'e}lie penguin dietary remains reveal Holocene environmental changes in the western Ross Sea (Antarctica)},
	journal = {Palaeogeography, Palaeoclimatology, Palaeoecology},
	volume = {395},
	year = {2014},
	note = {id: 2347},
	pages = {21-28},
	abstract = {Carbon and nitrogen stable isotope analyses were performed on modern and Holocene Ad{\'e}lie 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 δ13C 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 δ13C values. This δ13C divergence started at ca 2000 BP and follows the abandonment of the Scott Coast colonies. The δ13C 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.},
	issn = {0031-0182},
	doi = {10.1016/j.palaeo.2013.12.014},
	url = {http://www.sciencedirect.com/science/article/pii/S0031018213005440},
	author = {Lorenzini, Sandra and Baroni, Carlo and Baneschi, Ilaria and Salvatore, Maria Cristina and Fallick, Anthony E. and Hall, Brenda L.}
}
@article {147,
	title = {Insights into the Holocene environmental setting of Terra Nova Bay region (Ross Sea, Antarctica) from oxygen isotope geochemistry of Ad{\'e}lie penguin eggshells},
	journal = {The Holocene},
	volume = {22},
	year = {2012},
	note = {id: 2348},
	pages = {63-69},
	abstract = {An oxygen isotope record of Ad{\'e}lie penguin (Pygoscelis adeliae) eggshells from Terra Nova Bay (Victoria Land, Antarctica) has been reconstructed in order to provide insights into the palaeoenviroment of this region during the last ~8000 years. The d18O values measured in eggshell carbonate show a great variability over the course of the studied period, with maximum values consistently around +27.5{\textperthousand}. Adopting a metabolic enrichment relative to water source of ~+28.5{\textperthousand}, eggshell d18O values can be interpreted in terms of marine water uptake by the penguins. The spread in d18O of eggshell carbonate at any given time toward more negative values reflects the existence of a low d18O water end member, most plausibly snow or snowmelt. Samples younger than 2000 years are characterized by a general lack of very negative d18O values. As also attested by other proxies, this shift toward more positive isotopic values is likely to be related both to a decreasing contribution of snow or meltwater in the seawaters and consequently to an absence or paucity on the boundary of the nesting sites of snow or snowfall and freshwater that could be directly eaten or drunk by penguins.},
	doi = {10.1177/0959683611409773},
	url = {http://hol.sagepub.com/content/22/1/63.abstract},
	author = {Lorenzini, Sandra and Baneschi, Ilaria and Fallick, Anthony E. and Salvatore, Maria Cristina and Zanchetta, Giovanni and Dallai, Luigi and Baroni, Carlo}
}
@article {228,
	title = {Sources of n-alkanes in an urbanized estuary: Insights from molecular distributions and compound-specific stable and radiocarbon isotopes},
	journal = {Marine Chemistry},
	volume = {126},
	year = {2011},
	note = {id: 2169},
	pages = {239-249},
	abstract = {Diagnostic molecular ratios and compound-specific 13C and 14C analyses were used to identify n-alkane sources in surface sediments collected along a transect from an urbanized estuary draining a peat-rich catchment (Tyne, UK). The most abundant homologues were generally C29 or C31, and the carbon preference index (CPI; 1.8 to 6.4) and average chain length (ACL; 28.5 to 29.5) of C25{\textendash}C33 n-alkanes became progressively lower in samples closer to the mouth of estuary. δ13C signatures of C19{\textendash}C31 n-alkanes ranged from - 37.1 to - 29.3{\textperthousand} and in general became more depleted with increasing carbon number. Δ14C values for C21 (- 945 to - 738{\textperthousand}) were significantly more depleted compared to C29 (- 591 to - 65{\textperthousand}) and C31 (- 382 to - 96{\textperthousand}), pointing to a much higher component of fossil (i.e., 14C-free) carbon in the shorter homologue. The radiocarbon contents for these three n-alkanes decreased toward the North Sea, which in conjunction with an up to 4{\textperthousand} seaward 13C-enrichment in C29 and C31 and seaward decreases in CPI and ACL pointed to petrogenic hydrocarbon contamination in lower estuarine sediments. Independent 13C and 14C mass balances used to calculate the relative proportions of modern (i.e., plant wax) and fossil (i.e., petrogenic) n-alkanes yielded similar results and demonstrated that mixing with marine-derived organic matter (OM) or microbial degradation during estuarine transport led to a seaward decline in modern, longer-chain homologues, resulting in an increasingly larger fossil carbon contribution toward the mouth of estuary. The ability to clearly distinguish anthropogenic from natural inputs suggests that compound-specific radiocarbon analysis can successfully delineate the age of terrigenous OM delivered to the coastal zone even near historically polluted systems such as the Tyne.},
	issn = {0304-4203},
	doi = {10.1016/j.marchem.2011.06.002},
	author = {Ahad, Jason M. E. and Ganeshram, Raja S. and Bryant, Charlotte L. and Cisneros-Dozal, Luz M. and Ascough, Philippa L. and Fallick, Anthony E. and Slater, Greg F.}
}
@article {527,
	title = {Stable isotopes reveal Holocene changes in the diet of Ad,lie penguins in Northern Victoria Land (Ross Sea, Antarctica)},
	journal = {Oecologia},
	volume = {164},
	year = {2010},
	note = {id: 2350; PT: J; TC: 6; UT: WOS:000284271900007},
	pages = {911-919},
	abstract = {Ad,lie penguin (Pygoscelis adeliae) modern and fossil eggshells and guano samples collected from ornithogenic soils in Terra Nova Bay (Victoria Land, Ross Sea) were processed for carbon and nitrogen isotopic ratios with the aim of detecting past penguin dietary changes. A detailed and greatly expanded Ad,lie penguin dietary record dated back to 7,200 years BP has been reconstructed for the investigated area. Our data indicate a significant dietary shift between fish and krill, with a gradual decrease from past to present time in the proportion of fish compared to krill in Ad,lie penguin diet. From 7,200 to 2,000 years BP, delta(13)C and delta(15)N values indicate fish as the most eaten prey. The dietary contribution of lower-trophic prey in penguin diet started becoming evident not earlier than 2,000 years BP, when the delta(13)C values reveal a change in the penguin feeding behavior. Modern eggshell and guano samples reveal a major dietary contribution of krill but not a krill-dominated diet, since delta(13)C values remain much too high if krill prevail in the diet. According to the Holocene environmental background attested for Victoria Land, Ad,lie penguin dietary shifts between fish and krill seem to reflect penguin paleoecological responses to different paleoenvironmental settings with different conditions of sea-ice extension and persistence. Furthermore, Ad,lie penguin diet appears to be particularly affected by environmental changes in a very specific period within the breeding season, namely the egg-laying period when penguin dietary and feeding habit shifts are clearly documented by the delta(13)C of eggshell carbonate.},
	issn = {0029-8549},
	doi = {10.1007/s00442-010-1790-2},
	author = {Lorenzini, Sandra and Baroni, Carlo and Fallick, Anthony E. and Baneschi, Ilaria and Salvatore, Maria Cristina and Zanchetta, Giovanni and Dallai, Luigi}
}
@article {2221,
	title = {Extreme 13C carb enrichment in ca. 2.0 Ga magnesite-stromatolite--dolomite--"red beds" association in a global context: a case for the world-wide signal enhanced by a local environment},
	journal = {Earth-Science Reviews},
	volume = {48},
	year = {1999},
	note = {id: 1567},
	month = {1999},
	pages = {71-120},
	author = {Melezhik, Victor A. and Fallick, Anthony E. and Medvedev, Pavel V. and Makarikhin, Vladimir V.}
}
