International Journal of Environmental Sciences

Volume 4 Issue 4 2014- January 2014    Pages: 575-588  <<Previous    Next>>

Study on littoral zone sediment quality and aquatic Macrophyte diversity of opencast coal pit-lakes in Raniganj coal field, West Bengal, India

Author Information:

Sandipan Pal1, 2, Aloke Kumar Mukherjee1, Tarakeshwar Senapat1i, Palas Samanta1, Subinoy Mondal1, Apurba Ratan Ghosh2
1- Department of Environmental Science, The University of Burdwan, Golapbag, Burdwan 713104, West Bengal, India
2- Department of Environmental Science, Aghorekamini Prakashchandra Mahavidyalaya, Subhasnagar, Bengai, Hooghly, 712611, West Bengal, India


Littoral zone sediment quality and species diversity of aquatic macrophytes were studied in four opencast coal pit-lakes at Raniganj Coalfield areas. Quantitative estimation of different soil parameters revealed that pH was neutral to low alkaline (7.00 to 8.90), conductivity, 130 to 670 μS/cm, available nitrogen, 22.0 to 194 kg/ha, available phosphorus, 2.04 to 27.1 kg/ha, available potassium, 85.5 to 424 kg/ha and organic carbon content was varied from 0.096 to 2.83 %. Distribution and concentration of heavy metals in the sediments were recorded as, Pb (0.033 to 1.57 mg/kg), Cd (0.018 to 0.108 mg/kg), Cr (non-detectable to 0.022 mg/kg) and As (non-detectable level). Aquatic macrophyte community was enriched by the most predominant nine species, viz., Potamogeton malainus, Ipomoea fistulosa, Typha angustifolia, Alternanthera philoxeroides, Valliseneria spiralis, Hydrilla verticillata, Marsilea minuta, Nymphoides indica and Nymphaea nouchali. The main objective of this work is to create a concrete baseline data of the water quality and soil parameters of the pit-lakes in the RCF areas. This work has been able to establish a relationship between the sediment properties, nutrient availability and growth of the macrophytes with different species composition.

Keywords: Littoral zone, Sediment quality, Opencast coal pit-lakes, Ecological restoration.


© 2014 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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