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International Journal of Current Microbiology and Applied Sciences (IJCMAS)
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National Academy of Agricultural Sciences (NAAS)
NAAS Score: *5.38 (2019)
[Effective from January 1, 2019]
For more details click here

ICV 2017: 100.00
Index Copernicus ICI Journals Master List 2017 - IJCMAS--ICV 2017: 100.00
For more details click here

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PRINT ISSN : 2319-7692
Online ISSN : 2319-7706
Issues : 12 per year
Publisher : Excellent Publishers
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Editor-in-chief: Dr.M.Prakash
Index Copernicus ICV 2017: 100.00
NAAS RATING 2018: 5.38

Int.J.Curr.Microbiol.App.Sci.2016.5(5): 90-93
DOI: http://dx.doi.org/10.20546/ijcmas.2016.505.010


A Study on Soil Palynomorph Diversity of an area in Kolkata, India
Roy Debleena*, Hazra Gargi, Sinha Suchita, Saha Rinku and Mallick Bidisha
Department of Botany, Lady Brabourne College, Kolkata, WestBengal, India
*Corresponding author
Abstract:

Palaeopalynological study was conducted in relation to reconstruct the palaeovegetation and palaeo climatic condition of our college area. For this purpose samples were collected from Lady Brabourne College premises, Park Circus [central-east zone of Kolkata] area. Our present study reveals the deposition age nearly from 7000-2000 yrs BP, confirming the Late-Quaternary age of the samples. At lower layer (40 ft), sample reveals vegetation as open grassland type. Presence of grass pollen, fern spores along with Heritiera and palms in little amount were recorded. Occurrence of Typha pollen indicates marshy habitat. Middle layer (33-27 ft) unfolds a mixed forest type including Heritiera, Suaeda, and grass pollen indicating the transition from saline to fresh water environment. At upper layer (23-19 ft), Heritiera was uniformly present along with fern spores, Suaeda, grass pollen etc. So the present study unfolds that mangrove vegetation was dominated in this region during Late-quaternary period. Occurrence of grass pollen throughout the strata indicates the prevalence of equable temperature and also human interference in the investigated area. Presence of various types of fungal spores throughout the strata indicates that the climatic condition was tropical with high humidity. Deposition of peat layers indicates strong and extensive river discharges which coincides with the intensification of monsoonal rainfall at summer. Environment was mixed type with brackish & fresh water because floral vegetation was regular inundated with sea water. Due to salinity in water source, water supply of plants was mostly from soil moisture.  So, it is assumed that, before 2000 yrs Kolkata was a part of Sunderbans.


Keywords: Palaeopalynology, Palaeovegetation, Palaeoclimate, Late-Quaternary, Brackish and fresh water environment, Mangrove, Humidity, Sunderbans.
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How to cite this article:

Roy Debleena, Hazra Gargi, Sinha Suchita, Saha Rinku and Mallick Bidisha. 2016.  A Study on Soil Palynomorph Diversity of an area in Kolkata, India.Int.J.Curr.Microbiol.App.Sci. 5(5): 90-93. doi: http://dx.doi.org/10.20546/ijcmas.2016.505.010