DOI: 10.1016/j.quascirev.2013.12.015
Scopus记录号: 2-s2.0-84892858458
论文题名: Insights into pollen source area, transport and deposition from modern pollen accumulation rates in lake sediments
作者: Matthias I. ; Giesecke T.
刊名: Quaternary Science Reviews
ISSN: 2773791
出版年: 2014
卷: 87 起始页码: 12
结束页码: 23
语种: 英语
英文关键词: Northeast Germany
; Pollen accumulation rate (PAR)
; Quantitative vegetation reconstruction
; Sedimentation rate
; Source area of pollen
Scopus关键词: Above ground biomass
; Forest inventory data
; Linear relationships
; Net primary productivity
; Northeast Germany
; Pollen accumulation rate
; Sedimentation rates
; Source area
; Biomass
; Deposition
; Ecosystems
; Lead
; Sediments
; Vegetation
; Lakes
; aboveground biomass
; bioaccumulation
; biomass
; ecological modeling
; lacustrine deposit
; linearity
; pollen
; primary production
; sedimentation
; vegetation structure
; Fennoscandia
英文摘要: Pollen accumulation rates (PAR) from late Quaternary deposits can provide direct estimates of past plant abundance. They are influenced by lake internal processes and therefore rarely used in between site comparisons, although few studies from Fennoscandia have applied them successfully. This study aims to explore how PARs from selected lakes from Northeast Germany reflect differences in plant abundance as a step towards quantitative vegetation reconstructions from PARs. Short sediment cores were collected from 18 lakes of which 16 could be dated by 210Pb. PARs were estimated for the youngest sediment, representing approximately two years before sampling in 2009, and samples dated to around 1993. Forest inventory data for the two time slices were obtained for 15km around the sites and standing volume (SV) was estimated as a measure of above ground biomass. PARs were compared to the total SV within increasing areas around the lakes, as well as to distance-weighted SV using the Prentice/Sugita model of pollen dispersal and deposition. Both assessments of the vegetation data yielded strong linear relationships with PARs already over distances of tens of metres to a few kilometres documenting the importance of the local vegetation. This indicates the importance of the often neglected trunk space component of pollen transport for small lakes. Results from the small number of large lakes suggest that these sites receive a larger absolute input of pollen from regional sources. These observations indicate that small lakes may be somewhat sheltered from pollen transported above the canopy. We demonstrate that PARs of the major tree taxa obtained from lake sediments are linear related to the lake surrounding biomass. This confirms that PAR can be used to infer past changes in plant biomass, although absolute pollen deposition may also be determined by net primary productivity of the biomass. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/60375
Appears in Collections: 过去全球变化的重建
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作者单位: Department of Palynology and Climate Dynamics, Albrecht-von-Haller-Institute for Plant Sciences, University of Göttingen, Untere Karspüle 2, 37073 Göttingen, Germany
Recommended Citation:
Matthias I.,Giesecke T.. Insights into pollen source area, transport and deposition from modern pollen accumulation rates in lake sediments[J]. Quaternary Science Reviews,2014-01-01,87