Pollen percentage thresholds of Abies alba based on 13-year annual records of pollen deposition in modified Tauber traps: perspectives of application to fossil situations.
Pollen percentage thresholds of Abies alba based on 13-year annual records of pollen deposition in modified Tauber traps: perspectives of application to fossil situations.
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DOI：
10.1016/j.revpalbo.2013.03.006
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发表时间：
2013-08-16
影响因子：
1.9
通讯作者：
Magyari E
中科院分区：
文献类型：
--
作者：
Pidek IA;Svitavská-Svobodová H;van der Knaap WO;Magyari E
冷杉是一种产于中欧山地和高地的亚山乔木，由于其对空气和土壤湿度的敏感性，在古生态和古气候解释中具有特殊的意义。它目前在波兰东南部高地的分布限制仍然是一个有争议的问题。在全新世，冷杉扩展到波兰的时间很晚，但早期的冷杉种群应该出现在Šumava Mts(捷克共和国)。本研究的目的是：根据改进的陶贝尔捕粉器，估计波希米亚(捷克共和国)和波兰存在/不存在冷杉的花粉阈值；利用这些阈值在罗兹托策地区(今天有冷杉林)和波莱西(冷杉从未发挥重要作用)交界处的波兰两张花粉图(SłOne和贝泽纳湖)中追踪冷杉的存在；并根据Rokyteckáslat‘和MRTV axyluh的花粉图，调查如何使用存在/不存在阈值的百分比来追踪Šumava MTS中冷杉的发生和数量。根据PAR(花粉累积率或花粉流入)估算的冷杉花粉阈值范围为843(粒数cm-2)(Roztocze)至61(krkonoše)和49(Šumava)。百分比阈值从Krkonoše的0.3%到22%不等，在4公里内没有杉树的Krkono Rztocze以冷杉为主的林地，提供了在花粉沉积中冷杉被严重低估的证据。将这些百分比阈值应用于SłOne和Bezedna花粉图，表明该地区从3.5Ka BP开始就有可能发生杉木，尽管证据不是决定性的。在Šumava中，早在大约7.0kycal BP时就检测到了反映松散冷杉存在的低代表冷杉花粉(1-2%)。
Abies alba (fir), a submontane tree from Central European mountains and uplands, is of special interest for palaeoecological and palaeoclimate interpretations due to its sensitivity to air and soil humidity. Its present distribution limit in the uplands of SE Poland is still a matter of debate. In the Holocene fir expanded to Poland very late, but early fir populations are supposed to occur in the Šumava Mts (Czech Republic). The study aims: to estimate pollen thresholds for fir presence/absence in Bohemia (Czech Republic) and Poland on the basis of modified Tauber pollen traps; to use these thresholds for tracing fir presence in two pollen diagrams from Poland (Słone and Bezedna lakes) in the border zone between the Roztocze region (with fir forest stands today) and Polesie (where fir has never played an important role); and to investigate how the percentage presence/absence threshold can be used to trace the occurrence and abundance of fir trees in the Šumava Mts based on the pollen diagrams of Rokytecká slat’ and Mrtvý luh. The fir pollen thresholds estimated in terms of PAR (pollen accumulation rates or pollen influx) range from 843 (grains cm-2 year-1) (Roztocze) to 61 (Krkonoše) and 49 (Šumava). Percentage thresholds range from 0.3% in Krkonoše where fir trees are not present within 4 km to 22% in fir-dominated woodland of the Roztocze, providing evidence of strong underrepresentation of fir in the pollen deposition. Application of these percentage thresholds to the Słone and Bezedna pollen diagrams indicates that occurrence of fir in the region is possible from 3.5 ky cal BP onwards, though the evidence is not decisive. In the Šumava, a low representation of fir pollen (1–2%) reflecting presence of scattered fir trees was detected as early as ca. 7.0 ky cal BP.
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影响因子：
1.9
作者：
Gerasimidis, Achilles;Panajiotidis, Sampson;Athanasiadis, Nikolaos
通讯作者：
Athanasiadis, Nikolaos
影响因子：
2.4
作者：
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通讯作者：
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影响因子：
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作者：
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通讯作者：
BENNETT, KD
影响因子：
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作者：
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通讯作者：
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影响因子：
1.2
作者：
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通讯作者：
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