NDLI: Quantitative paleotemperature estimates from δ18O of chironomid head capsules preserved in arctic lake sediments

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Quantitative paleotemperature estimates from δ18O of chironomid head capsules preserved in arctic lake sediments

Content Provider	Semantic Scholar
Author	Wooller, Matthew J. Francis, Donna R. Fogel, Marilyn L. Miller, Gifford H. Walker, Ian R. Wolfe, Alexander P.
Copyright Year	2004
Abstract	A paleoenvironmental perspective of temperature change is paramount to understanding the significance of recent warming in the Arctic. Late Quaternary sediments from many arctic lakes provide environmental archives with decadal resolution, but reconstructions are hampered by the relative insensitivity of many traditional proxies to temperature. Here, we show that the δ18O of head capsules of chironomid larvae are equilibrated with the δ18O of lakewaters in which they live. In suitable lakes, lakewater δ18O is controlled by the δ18O of local precipitation, which is strongly correlated to mean annual air temperature (MAT). From this correlation, chironomid δ18O can be used to examine past changes in MAT. We illustrate the potential of this novel approach to paleothermometry with examples from two arctic lakes that reveal strong regional paleoclimatic gradients in the early Holocene.
Starting Page	267
Ending Page	274
Page Count	8
File Format	PDF HTM / HTML
DOI	10.1023/B:JOPL.0000021944.45561.32
Volume Number	31
Alternate Webpage(s)	https://www.geo.umass.edu/climate/papers2/woolleretal2004.pdf
Alternate Webpage(s)	https://notendur.hi.is/~oi/AG-326%202006%20readings/Greenland/Wooller_JOPL2004.pdf
Alternate Webpage(s)	http://www.geo.umass.edu/climate/papers2/woolleretal2004.pdf
Alternate Webpage(s)	https://www.eas.ualberta.ca/wolfe/eprints/Wooller%20et%20al%20JOPL%202004.pdf
Alternate Webpage(s)	https://doi.org/10.1023/B%3AJOPL.0000021944.45561.32
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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