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首页> 外文期刊>Journal of quaternary science: JQS >Vegetation dynamics from a coastal peatland: insights from combined plant macrofossil and pollen data
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Vegetation dynamics from a coastal peatland: insights from combined plant macrofossil and pollen data

机译：沿海泥炭地的植被动态：植物大化石和花粉数据的综合见解

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This paper reports the results of plant-macrofossil investigations from a peat layer buried within coastal alluvium at the Caburn, a site adjacent to the English chalkland. The data collected are compared against a published mid-Holocene pollen sequence with the macrofossil record providing greater taxonomic resolution and establishing a local presence for many taxa. Alnus glutinosa pollen is abundant and Alnus macrofossils are recorded continuously over a c. 3000 cal year period. Fluctuations in the number of Alnus propagules and the presence of seeds of light-demanding herbaceous plants suggest that regeneration occurred at a local scale, a process which is likely to have been promoted by a rising water table and sediment consolidation. Taxus baccata macrofossils were also recovered, indicating that the high pollen values previously reported may be the result of yew being present within the wetland area. The Tilia macrofossils establish the presence nearby of T. cordata, T. x europaea and T. platyphyllos. High pollen values for Quercus, Tilia and Alnus coincide with the occurrence of their anthers. Deposition within inflorescences is therefore likely to have been an important mode of pollen delivery. The usefulness of both techniques in studies that utilize peats derived from fen carr vegetation are discussed. Copyright (c) 2015 John Wiley & Sons, Ltd.
机译：本文报道了在英国白垩地区附近的卡本（Caburn）沿海冲积层中埋藏的泥炭层中的植物-宏化石调查结果。将收集到的数据与已发布的全新世中期花粉序列进行比较，大化石记录可提供更高的分类学分辨率并为许多分类群建立本地存在。 glut木的花粉丰富，a的化石在c上连续记录。 3000 cal年期间。 nu木繁殖体数量的波动和对光有需求的草本植物种子的存在表明再生发生在局部规模，这一过程可能是由于地下水位上升和沉积物固结而促进的。还回收了红豆杉大化石，表明先前报道的高花粉值可能是湿地地区存在紫杉的结果。 ilia树大化石在T. cordata，T。x europaea和T. platyphyllos附近建立。栎，T树和Al木的高花粉值与花药的出现相吻合。因此，在花序内的沉积可能已经是花粉递送的重要方式。讨论了两种技术在利用粉煤灰植被衍生的泥炭的研究中的有用性。版权所有（c）2015 John Wiley＆Sons，Ltd.

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