DOI: 10.1016/j.palaeo.2013.01.023
论文题名: Vegetation development in an Amazonian peatland
作者: Roucoux K.H. ; Lawson I.T. ; Jones T.D. ; Baker T.R. ; Coronado E.N.H. ; Gosling W.D. ; Lähteenoja O.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 374 起始页码: 242
结束页码: 255
语种: 英语
英文关键词: Aguajal
; Floristic composition
; Mauritia
; Peat
; Peru
; Pollen
; Quistococha
英文摘要: Recent investigations of wetlands in western Amazonia have revealed the presence of extensive peat deposits up to 7.5. m thick developing under a variety of vegetation types. We report the first attempt to establish the long-term (centennial to millennial scale) vegetation history of one of these peatland sites, Quistococha, a palm swamp close to Iquitos in northern Peru. Pollen and sedimentological analyses show that peat formation began at the core site under sedge fen or floating mat vegetation c. 2200 calendar years before present (cal. yr BP). A seasonally flooded woodland developed c. 1880. cal. yr BP. The permanently waterlogged palm swamp which persists today began to form c. 1000. cal. yr BP, with the present vegetation community established by c. 400. years ago. The vegetation at this site has undergone continuous change throughout the period of peat formation, with several abrupt transitions, and reversals and repetitions in the apparent trajectory of change. The pollen data, combined with sedimentary evidence, suggest that the dominant control on ecosystem functioning and development is the flooding regime. There appears to have been a decrease in fluvial influence over time. There is no clear evidence of direct climatic or anthropogenic influence although we cannot rule out the possibility of climatically driven hydrological changes. Our results caution against adopting a simple model of peatland vegetation succession in this region. © 2013 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69810
Appears in Collections: 过去全球变化的重建
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作者单位: School of Geography, University of Leeds, Leeds, LS2 9JT, United Kingdom; Earth and Environmental Sciences, CEPSAR, Open University, Walton Hall, Milton Keynes, MK7 6AA, United Kingdom; Department of Biology, University of Turku, FI-20014 Turku, Finland
Recommended Citation:
Roucoux K.H.,Lawson I.T.,Jones T.D.,et al. Vegetation development in an Amazonian peatland[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,374