Penguin occupation in the Vestfold Hills

Huang, Tao; Sun, Liguang; Wang, Yuhong; Zhu, Renbin

doi:10.1017/s095410200800165x

Cited by 16 publications

(18 citation statements)

References 30 publications

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“…The detailed method was described elsewhere538. The top 4.2 cm sediments were analyzed for 210 Pb with Ortec HPGe GWL series detectors and showed a record of about 120 years.…”

Section: Methodsmentioning

confidence: 99%

Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica

Sun

Xie

et al. 2013

Sci Rep

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Penguins are an important seabird species in Antarctica and are sensitive to climate and environmental changes. Previous studies indicated that penguin populations increased when the climate became warmer and decreased when it became colder in the maritime Antarctic. Here we determined organic markers in a sediment profile collected at Cape Bird, Ross Island, high Antarctic, and reconstructed the history of Adélie penguin colonies at this location over the past 700 years. The region transformed from a seal to a penguin habitat when the Little Ice Age (LIA; 1500–1800 AD) began. Penguins then became the dominant species. Penguin populations were the highest during ca. 1490 to 1670 AD, a cold period, which is contrary to previous results in other regions much farther north. Different responses to climate change may occur at low latitudes and high latitudes in the Antarctic, even if for same species.

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“…The detailed method was described elsewhere538. The top 4.2 cm sediments were analyzed for 210 Pb with Ortec HPGe GWL series detectors and showed a record of about 120 years.…”

Section: Methodsmentioning

confidence: 99%

Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica

Sun

Xie

et al. 2013

Sci Rep

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“…For the top 10 cm sediments, 210 Pb and 137 Cs dating was performed at 1 cm intervals by direct gamma spectrometry using an Ortec HPGe GWL series detector. Detailed information about the AMS 14 C dating on the core has previously been described by Huang et al (2009). In addition, we performed AMS 14 C dating on two bulk sediment samples at -3 cm (3 cm below surface of the core) and -36 cm in the core.…”

Section: Geochronology and Elemental Analysismentioning

confidence: 99%

“…Historical information about Antarctic penguins remains quite limited, and most of the palaeoecological studies on penguins are based upon the distribution and age of abandoned colonies. By radiocarbon dating of the ancient remains from these abandoned penguin colonies, and geochemical analyses on penguin ornithogenic soils, some historical records of penguin occupation in the Antarctic Peninsula, Ross Sea area, Windmill Islands and Vestfold Hills have been reconstructed (Baroni & Orombelli 1994, Emslie 2001, Sun et al 2004a, Emslie & Woehler 2005, Emslie et al 2007, Huang et al 2009. Similarly, Hodgson & Johnston (1997) and Sun et al (2000) have utilized wellpreserved animal remains, such as hairs and droppings in lake sediments, to infer historical population dynamics of seals and penguins and examined the responses of ecosystems to climatic changes and human activities.…”

Section: Introductionmentioning

confidence: 99%

Penguin population dynamics for the past 8500 years at Gardner Island, Vestfold Hills

et al. 2009

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Abstract:In order to reconstruct past changes in penguin populations we performed geochemical analyses on a penguin ornithogenic sediment core DG4 retrieved from a lake catchment on Gardner Island, Vestfold Hills. P, Se, F, S, As, Sr and Cu in DG4 were identified as the bio-element assemblage by R-clustering analyses on the elemental concentrations and comparisons with those in bedrock and fresh penguin guano. Factor analysis on the levels of these bio-elements in the core permitted a reconstruction of variations in historical penguin populations at Gardner Island spanning the past 8500 years. The penguin population showed significant fluctuations, reaching its highest density between 4700-2400 calibrated years before present. This coincides with evidence for a late Holocene warm period in the Vestfold Hills, similar to that associated with the late Holocene penguin optimum recorded in the Ross Sea and Antarctic Peninsula regions.

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“…This compilation of RSL data from the Prydz Bay region includes previously published data from the Larsemann Hills and Vestfold Hills Bird et al, 1991;Coolen et al, 2004;Pickard, 1985;Pickard and Adamson, 1983;Pickard and Seppelt, 1984;Zhang and Peterson, 1984;Zwartz et al, 1998) which have been re-evaluated in terms of maximum and minimum sea-level constraints; all radiocarbon dates have been recalibrated (Table 1). To these we have added new constraints based on the location, altitude and age of abandoned penguin colonies in the Vestfold Hills (Huang et al, 2011;Huang et al, 2009aHuang et al, , 2009b and we have carried out a detailed study to validate a potential submarine RSL constraint in the Rauer Islands, which was previously identified in a marine sediment core by Berg et al (2010). This last constraint is important as it is the only one from the early Holocene, it predates the local RSL maximum, and it constrains the rising limb of the RSL curve.…”

Section: Methodsmentioning

confidence: 99%

“…Notable results presented in Table 1 include a new age for the inundation of Ace Lake at 9411 cal yr BP (Coolen et al, 2004), and radiocarbon dates on a series of penguin fossils at abandoned penguin nesting sites at 7 m and 32 m respectively on Zolotov and Gardner Islands (Huang et al, 2009a(Huang et al, , 2009b(Huang et al, , 2011 constraining the sea level maximum. However, we begin by presenting new data from the Rauer Islands.…”

Section: Geological Constraints On Rslmentioning

confidence: 99%

Rapid early Holocene sea-level rise in Prydz Bay, East Antarctica

Hodgson

Whitehouse

Cort

et al. 2016

Global and Planetary Change

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Prydz Bay is one of the largest embayments on the East Antarctic coast and it is the discharge point for approximately 16% of the East Antarctic Ice Sheet. Geological constraints on the regional ice sheet history include evidence of past relative sea-level change at three sites; the Vestfold Hills, Rauer Islands and Larsemann Hills. In this paper we compile updated regional relative sea-level data from these sites. We compare these with a suite of relative sea-level predictions derived from glacial isostatic adjustment models and discuss the significance of departures between the models and the field evidence. The compiled geological data extend the relative sea-level curve for this region to 11,258 cal yr BP and include new constraints based on abandoned penguin colonies, new isolation basin data in the Vestfold Hills, validation of a submarine relative sea-level constraint in the Rauer Islands and recalibrated radiocarbon ages at all sites dating from 12,728 cal yr BP. The field data show rapid increases in rates of relative sea level rise of 12-48 mm/yr between 10,473 (or 9678) and 9411 cal yr BP in the Vestfold Hills and of 8.8 mm/yr between 8882 and 8563 cal yr BP in the Larsemann Hills. The relative sea-level high stands of >= 8.8 m from 9411 to after 7564 cal yr BP (Vestfold Hills) and >= 8 mat 8563 and 7066 cal yr BP (Larsemann Hills) are over-predicted by some of the glacial isostatic adjustment models considered here, suggesting that assumptions relating to the magnitude and timing of regional ice loss since the Last Glacial Maximum may need revising. In the Vestfold Hills and Rauer Islands the final deglacial sea-level rise was almost exactly cancelled out by local rebound between 9411 and 5967 cal yr BP and this was followed by a near exponential decay in relative sea-level. In the Larsemann Hills the sea-level data suggest that the rate of ice retreat in this region was not uniform throughout the Holocene. Swath bathymetric surveys of the benthic seafloor topography show the presence of multiple offshore basins. These are a priority for further study as those that remained free of grounded ice should provide precise constraints on relative sea-level rise and ice sheet history during the most rapid phases of the last major deglaciation

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Penguin occupation in the Vestfold Hills

Cited by 16 publications

References 30 publications

Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica

Increase in penguin populations during the Little Ice Age in the Ross Sea, Antarctica

Penguin population dynamics for the past 8500 years at Gardner Island, Vestfold Hills

Rapid early Holocene sea-level rise in Prydz Bay, East Antarctica

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