Invited Opinion PaperWhat do IP25 and related biomarkers really reveal about sea ice change?
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Cited by (23)
Marine sedimentary ancient DNA from Antarctic diatoms
2024, Palaeogeography, Palaeoclimatology, PalaeoecologySea ice in the northern North Atlantic through the Holocene: Evidence from ice cores and marine sediment records
2021, Quaternary Science ReviewsCitation Excerpt :Recent advances have been made in the development of new proxies to reconstruct sea ice in the northern North Atlantic, notably the sea ice proxy biomarker IP25 (Belt et al., 2007; Müller et al., 2011). Despite this progress, extracting a sea ice signature is often challenging and different proxies do not always agree (Stein et al., 2012; Belt and Müller, 2013; Belt, 2018, 2019). Moreover, marine sediment records often have low temporal resolution and substantial inherent dating uncertainties.
Molecular advances in archaeological and biological research on Atlantic walrus
2021, The Atlantic Walrus: Multidisciplinary Insights into Human-Animal InteractionsResolving sea ice dynamics in the north-western Ross Sea during the last 2.6 ka: From seasonal to millennial timescales
2020, Quaternary Science ReviewsCitation Excerpt :In addition, we note that some of the C. pennatum observed in the current study was present as fragmented frustules. On the other hand, IPSO25 appears sufficiently stable in sediments to permit identification in sediments spanning the Quaternary, at least (Belt, 2018, 2019). The distributions of lithogenic material are also consistent with the biogenic content and associated interpretations of dark and light laminae.
Autoxidation of the sea ice biomarker proxy IPSO <inf>25</inf> in the near-surface oxic layers of Arctic and Antarctic sediments
2019, Organic GeochemistryCitation Excerpt :As such, diene II has been proposed as a proxy measure for sea ice in the Southern Ocean, and the term IPSO25 (Ice Proxy for the Southern Ocean with 25 carbon atoms) has been recently proposed (Belt et al., 2016). Although IPSO25 appears to be a common constituent of Antarctic surface sediments (for near-coastal regions, at least; Nichols et al., 1993; Johns et al., 1999; Belt et al., 2016; Belt, 2018, 2019), analysis of IPSO25 in downcore Antarctic archives has so far resulted in only a relatively small number of palaeo sea ice reconstructions, at least in comparison with IP25 for the Arctic (e.g., Collins et al., 2013; Etourneau et al., 2013; Barbara et al., 2016; Campagne et al., 2016; see also Belt, 2018, 2019 for a recent review and summary). Finally, in the Arctic, the ratio IPSO25/IP25 (sometimes referred to as DIP25) has previously been proposed as a possible indicator of variability in sea ice conditions or even of sea surface temperatures (SST) (e.g., Fahl and Stein, 2012; Stein et al., 2012; Cabedo-Sanz et al., 2013).
Millennial-scale variations in Arctic sea ice are recorded in sedimentary ancient DNA of the microalga Polarella glacialis
2024, Communications Earth and Environment