A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline
A comparison of sedimentary DNA and pollen from lake sediments in recording vegetation composition at the Siberian treeline
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记录西伯利亚林线植被组成时沉积物 DNA 和湖泊沉积物花粉的比较
DOI：
10.1111/1755-0998.12689
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发表时间：
2017
影响因子：
7.7
通讯作者：
Herzschuh
中科院分区：
文献类型：
--
作者：
Niemeyer;Stoof-Leichsenring;Pestryakova;Herzschuh
Reliable information on past and present vegetation is important to project future changes, especially for rapidly transitioning areas such as the boreal treeline. To study past vegetation, pollen analysis is common, while current vegetation is usually assessed by field surveys. Application of detailed sedimentary DNA (sedDNA) records has the potential to enhance our understanding of vegetation changes, but studies systematically investigating the power of this proxy are rare to date. This study compares sedDNA metabarcoding and pollen records from surface sediments of 31 lakes along a north–south gradient of increasing forest cover in northern Siberia (Taymyr peninsula) with data from field surveys in the surroundings of the lakes. sedDNA metabarcoding recorded 114 plant taxa, about half of them to species level, while pollen analyses identified 43 taxa, both exceeding the 31 taxa found by vegetation field surveys. IncreasingLarixpercentages from north to south were consistently recorded by all three methods and principal component analyses based on percentage data of vegetation surveys and DNA sequences separated tundra from forested sites. Comparisons of the ordinations usingprocrustesandprotestanalyses show a significant fit among all compared pairs of records. Despite similarities of sedDNA and pollen records, certain idiosyncrasies, such as high percentages ofAlnusandBetulain all pollen and high percentages ofSalixin all sedDNA spectra, are observable. Our results from the tundra to single‐tree tundra transition zone show that sedDNA analyses perform better than pollen in recording site‐specific richness (i.e., presence/absence of taxa in the vicinity of the lake) and perform as well as pollen in tracing vegetation composition.
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影响因子：
2.3
作者：
H. Seppä;M. Nyman;A. Korhola;J. Weckström
通讯作者：
H. Seppä;M. Nyman;A. Korhola;J. Weckström
加拿大西北地区黄刀以北林线全新世植被变化
影响因子：
2.3
作者：
K. Moser;G. MacDonald
通讯作者：
G. MacDonald
通过对拉马湖核心的花粉分析揭示了西伯利亚中部泰梅尔半岛西南部的晚冰期和冰期后植被和气候历史
DOI：
--
发表时间：
1997
期刊：
影响因子：
--
作者：
J. Hahne;M. Melles
通讯作者：
M. Melles
全新世和更新世沉积物中多样的动植物遗传记录
影响因子：
56.9
作者：
Willerslev, E;Hansen, AJ;Cooper, A
通讯作者：
Cooper, A
根据花粉和盘星绿藻记录推断，过去 300 年来西伯利亚北部泰米尔半岛南部的植被和湖泊变化
DOI：
10.1177/0959683614565954
发表时间：
2015
期刊：
The Holocene
影响因子：
--
作者：
Niemeyer;Pestryakova;Herzschuh
通讯作者：
Herzschuh