DOI: 10.1016/j.palaeo.2013.04.004
论文题名: Holocene mangrove dynamics in Makoba Bay, Zanzibar
作者: Punwong P. ; Marchant R. ; Selby K.
刊名: Palaeogeography, Palaeoclimatology, Palaeoecology
ISSN: 0031-0182
出版年: 2013
卷: 379-380 起始页码: 54
结束页码: 67
语种: 英语
英文关键词: Charcoal analysis
; Coastal change
; Pollen analysis
; Vegetation-pollen index
英文摘要: Pollen and charcoal analyses on sediment cores retrieved across an altitudinal transect inMakoba Bay, Zanzibar, Tanzania, setwithin a chronology provided by 11 radiocarbon dates, are used to r econstruct Holocene mangrove ecosystem dynamics. Using the changing ratio of the key mangrove taxa Sonneratia/(Bruguiera/Ceriops) (S/BC) relative changes in past sea level are inferred. The interpretation of the pollen record is guided by an initial assessment of modern pollen-vegetation and vegetation to environmental relationships. Mangrove communities in Makoba Bay are recorded from at least the early Holocene in what was a similar environment to the present day.Mangrovesmigrated landward, probably in relation to a sea level rise until themid Holocene as the seaward and central core locations developed as a lower intertidal mangrove area. A phase of lower sea level occurred from the mid Holocene to ~1450-1550 cal. yrs BP characterised by the mangrove communities retreating seaward. After 1450-1550 cal. yrs BP, sea level rose again and greater inundation frequency caused mangroves to shift landward, gradually falling until reaching the present sea level. The recent decrease ofmangrove species, Rhizophora mucronata,may result from increasing anthropogenic influences in themangrove ecosystems during the last centuries as supported by an increase in charcoal. © 2013 Published by Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/69738
Appears in Collections: 过去全球变化的重建
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作者单位: York Institute of Tropical Ecosystem Dynamics, Environment Department, University of York, YO10 5DD, United Kingdom; Environment Department, University of York, YO10 5DD, United Kingdom
Recommended Citation:
Punwong P.,Marchant R.,Selby K.. Holocene mangrove dynamics in Makoba Bay, Zanzibar[J]. Palaeogeography, Palaeoclimatology, Palaeoecology,2013-01-01,379-380