Phytolith spectra in respiratory aerial roots of some mangrove plants of the Indian Sunderbans and its efficacy in ancient deltaic environment reconstruction

doi:10.1016/j.quaint.2013.11.025

	Phytolith spectra in respiratory aerial roots of some mangrove plants of the Indian Sunderbans and its efficacy in ancient deltaic environment reconstruction
	Das, Sayantani ; Ghosh, Ruby 1; Paruya, Dipak Kumar ; Yao, Yi-Feng ; Li, Cheng-Sen ; Bera, Subir
	2014
发表期刊	QUATERNARY INTERNATIONAL
ISSN	1040-6182
卷号	325 页码:179-196
摘要	This study reports phytolith diversity in respiratory aerial roots of some true mangrove plants for the first time. To identify the signal of phytoliths retrieved from these respiratory roots in the modern deltaic environments, we have analyzed the phytolith contents of pneumatophores and/or pneumatothodes of 13 mangrove species from 7 families inhabiting true mangrove forests, and compared their representation in assemblages of stems and leaves of 108 taxa and 26 surface soil samples collected from different deltaic sub-environments of the Indian Sunderbans along a salinity gradient. The result shows that most of the phytolith morphotypes occurring in these respiratory roots are redundant, having low taxonomic significance, and are produced in the stems of the same or different plants. Our study revealed that despite the morphological symmetry of the phytolith morphotypes, size differences of two morphotypes i.e. blocky polyhedral and blocky elongated bodies can be attributed to discriminate their source of origin reliably. Discriminant function analysis shows that 97.7% of stem and 66.5% aerating root data on blocky polyhedral morphotypes can be correctly classified. Blocky elongated morphotypes can accurately classify 75.7% of stem data and 81.1% of aerating root data. This means that size parameters of certain phytolith morphotypes can successfully discriminate between stem and respiratory aerial root. Study of surface and sub-surface sediments from a late Quaternary profile (4215 +/- 35 BP at a depth of 390 cm and 2810 +/- 25 BP at a depth of 30 cm) also confirms the conclusions. The implications of these findings lie in distinguishing true mangrove environments from other deltaic sub-environments, as pneumatophores/ pneumatothodes are only produced in plants inhabiting tidal or intertidal sub-environments. The creation of a comprehensive analogue of aerating root phytoliths from the Indian Sunderbans has provided the necessary ground work for interpretation of late Quaternary environmental studies in the region. (C) 2013 Elsevier Ltd and INQUA. All rights reserved.
学科领域	Geography, Physical ; Geosciences, Multidisciplinary
DOI	10.1016/j.quaint.2013.11.025
收录类别	SCI
语种	英语
WOS关键词	WHITNEY-U-TEST ; ASSEMBLAGES ; INDICATORS ; HOLOCENE ; NORTH ; GRASSLAND ; GRASSES ; POLLEN ; SILICA ; SOILS
WOS研究方向	Physical Geography ; Geology
WOS记录号	WOS:000334088500018
出版者	PERGAMON-ELSEVIER SCIENCE LTD
文献子类	Article
出版地	OXFORD
EISSN	1873-4553
资助机构	UGC-RFSMS
作者邮箱	berasubir@yahoo.co.in
引用统计	被引频次：14[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/27102
专题	系统与进化植物学国家重点实验室
作者单位	1.Univ Calcutta, Dept Bot, Palaeobot Palynol Lab, Ctr Adv Study, Kolkata 700019, W Bengal, India 2.Birbal Sahni Inst Paleobot, Lucknow 226007, Uttar Pradesh, India 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Das, Sayantani,Ghosh, Ruby,Paruya, Dipak Kumar,et al. Phytolith spectra in respiratory aerial roots of some mangrove plants of the Indian Sunderbans and its efficacy in ancient deltaic environment reconstruction[J]. QUATERNARY INTERNATIONAL,2014,325:179-196.
APA	Das, Sayantani,Ghosh, Ruby,Paruya, Dipak Kumar,Yao, Yi-Feng,Li, Cheng-Sen,&Bera, Subir.(2014).Phytolith spectra in respiratory aerial roots of some mangrove plants of the Indian Sunderbans and its efficacy in ancient deltaic environment reconstruction.QUATERNARY INTERNATIONAL,325,179-196.
MLA	Das, Sayantani,et al."Phytolith spectra in respiratory aerial roots of some mangrove plants of the Indian Sunderbans and its efficacy in ancient deltaic environment reconstruction".QUATERNARY INTERNATIONAL 325(2014):179-196.

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