In:
Science, American Association for the Advancement of Science (AAAS), Vol. 314, No. 5797 ( 2006-10-13), p. 285-288
Abstract:
An analysis of 1516 radiocarbon dates demonstrates that the development of the current circumarctic peatlands began ∼16.5 thousand years ago (ka) and expanded explosively between 12 and 8 ka in concert with high summer insolation and increasing temperatures. Their rapid development contributed to the sustained peak in CH 4 and modest decline of CO 2 during the early Holocene and likely contributed to CH 4 and CO 2 fluctuations during earlier interglacial and interstadial transitions. Given the decreased tempo of peatland initiation in the late Holocene and the transition of many from fens (which generated high levels of CH 4 ) to ombrotrophic bogs, a neoglacial expansion of northern peatlands cannot explain the increase in atmospheric CH 4 that occurred after 6 ka.
Type of Medium:
Online Resource
ISSN:
0036-8075
,
1095-9203
DOI:
10.1126/science.1131722
Language:
English
Publisher:
American Association for the Advancement of Science (AAAS)
Publication Date:
2006
detail.hit.zdb_id:
128410-1
detail.hit.zdb_id:
2066996-3
detail.hit.zdb_id:
2060783-0
SSG:
11
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