Testate amoebae as a proxy for reconstructing Holocene water table dynamics in southern Patagonian peat bogs
Testate amoebae as a proxy for reconstructing Holocene water table dynamics in southern Patagonian peat bogs
复制标题
将变形虫作为重建巴塔哥尼亚南部泥炭沼泽全新世地下水位动态的代理
DOI:
10.1002/jqs.2719
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发表时间:
2014
影响因子:
2.3
通讯作者:
VAN BELLEN S
中科院分区:
文献类型:
--
作者:
VAN BELLEN S
Testate amoebae are abundant and diverse inSphagnumpeat bogs and have been used extensively as indicators of past water table depths. Although these unicellular protists are widely dispersed with globally similar hydrological preferences, regional variations in communities demand region‐specific transfer functions. Here we present the first transfer function for southern Patagonian bogs, based on 154 surface samples obtained from transects in five bogs sampled in 2012 and 2013. Significant variance was explained by pH, electrical conductivity and, in particular, water table depth. Transfer functions for water table were constructed using weighted averaging and evaluated by cross‐validation and independent test sets. The optimal transfer function has predictive ability, but relatively high prediction errors given the wide range in sampled water tables. The use of independent test sets, as well as cross‐validation, allows a more rigorous assessment of model performance than most previous studies. For a subset of locations we compare surface and subsurface samples to demonstrate significant differences in community composition, possibly due to vertical zonation. Our results provide the first quantification of hydrological optima and tolerances for several rare species, which may include Southern Hemisphere endemics and pave the way for palaeohydrological reconstructions in southern Patagonian bogs.
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影响因子:
1.8
作者:
R. Payne;J. Pates
通讯作者:
J. Pates
影响因子:
3.4
作者:
D. Mauquoy;D. Yeloff
通讯作者:
D. Yeloff
影响因子:
1.8
作者:
M. G. C. Schouten;J. G. Streefkerk;P. C. van der Molen
通讯作者:
P. C. van der Molen
影响因子:
2.2
作者:
Charman, DJ
通讯作者:
Charman, DJ
DOI:
--
发表时间:
2010
期刊:
影响因子:
--
作者:
A. Borromei;A. Coronato;L. Franzén;J. F. Ponce;J. Sáez;N. Maidana;J. Rabassa;M. S. Candel
通讯作者:
M. S. Candel