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Mangrove Degradation in the Sundarbans

  • Ashis Kr. PaulEmail author
  • Ratnadip Ray
  • Amrit Kamila
  • Subrata Jana
Chapter
Part of the Coastal Research Library book series (COASTALRL, volume 21)

Abstract

Mangroves are most opportunistic plant to find out the favorable environment for adjustment with changing natural conditions of the coastal processes over time and space. The salt loving halophytic plants of intertidal environment are also known as a perfect biological indicator of coastal environmental changes. They act as natural buffer or bio-shield against the wind breaks, tidal waves and coastal erosion. Surface stability of younger deltaic sediments is achieved in the Sundarban coast due to the location and luxuriant growth of mangroves. Presently, Sundarban mangroves are affected by multiple ways of degradations that will produce the significant risks or vulnerabilities to the deltaic coasts occupied by land hungry people of South-Asia.

The present study reveals with an attempt to prepare a checklist for the assessment of mangrove degradations with special reference to south west Sundarban coast. The significance of mangrove conservation will be strongly supported by such degradation check lists for the coastal managers. The present work is conducted by extensive field works over a prolonged period, use of professional experiences of the authors, and application of Geospatial Techniques for database generation and management to achieve the purposes. However, factor analysis (PCA) method is also utilized to justify the ideal sequential factors those are responsible for mangrove degradations for each study area of the islands as per their regional location characters.

So far as, seven major factors and their total 56 sub-factors of mangrove degradations have been identified in southwestern parts of the Sundarban from the temporal field observations, remote sensing studies and explored historical documents in the study areas. From the present study it is revealed that hypersalinity, storm effects and sediment deposition parameters are mainly responsible for mangrove degradations in Patibania Island (Susnir Char); and for the Fredrick Island fishery development, land erosion and hypersalinity parameters are liable to mangrove degradations; and finally, fishery development, sediment deposition and land erosion parameters are sequentially responsible for mangrove degradations in Henry’s Island.

Keywords

Mangrove degradation checklist (MDC) Sundarban Biological indicator Geospatial techniques Factor analysis (PCA) Vulnerability Mangrove restoration 

References

  1. Acharya S, Mohapatra PK (2012) Conservation and management strategies for the mangroves of Bhitarkanika National Park, Odisha. In: Samanta AK, Panda S (eds) Some aspects of coastal vegetation in India, including Andamans and Sundarbans. Ramnagar College, Depal, pp 30–40Google Scholar
  2. Burke L, Kura Y, Kassem K, Ravenga C, Spalding M, McAllister D (2001) Pilot assessment of global ecosystems: coastal ecosystems. World Resources Institute (WRI), Washington, DCGoogle Scholar
  3. Cahoon DR, Hensel P (2006) High-resolution global assessment of mangrove responses to sea-level rise: a review. In Proceedings of the symposium on mangrove responses to relative sea level rise and other climate change effects, vol 13, pp. 9–17Google Scholar
  4. Ghosh N, Naskar KR (2012) Aila cyclone, mangrove ecosystem and anthropogenic factor- a socio-economic scan. In: Samanta AK, Panda S (eds) Some aspects of coastal vegetation in India, including Andamans and Sundarbans. Ramnagar College, Depal, pp 109–111Google Scholar
  5. Heathcote RL, Thom BG (1979) Natural hazards in Australia: proceedings of a symposium. Australian Academy of Science. XII+531 ppGoogle Scholar
  6. Majumdar DD, Bera S, Ray R, Paul AK (2012) An assessment of diversities in halophytic grassland and mangrove swamp in Nayachar Island, Hugli estuary, West Bengal. In: Samanta AK, Panda S (eds) Some aspects of coastal vegetation in India, including Andamans and Sundarbans. Ramnagar College, Depal, pp 112–123Google Scholar
  7. Paul AK (2002) Coastal geomorphology and environment. ACB Publications, Kolkata, pp 1–585Google Scholar
  8. Paul AK (2005) Tsunami: an assessment of disaster in Indian Ocean nations. ACB Publications, Kolkata, p 89Google Scholar
  9. Paul AK, Islam SM, Jana S (2014) An assessment of physiographic habitats, geomorphology and evolution of Chilika Lagoon (Odisha, India) using geospatial technology. In remote sensing and modeling. Springer International Publishing Switzerland, pp 135–160Google Scholar
  10. Raha AK, Mishra A, Bhattacharya S, Ghatak S, Pramanick P, Dey S, Sarkar I, Jha C (2014) Sea level rise and submergence of Sundarban islands: a time series study of estuarine dynamics. Int J Ecol Environ Sci 05:114–123Google Scholar
  11. Ray R, Mondal S (2014) Remote sensing of wetland environment. LAP Lambert Academic Publishing, Saarbrücken, p 90Google Scholar
  12. Ray R, Paul AK, Basu B (2013) Application of supervised enhancement technique in monitoring the mangrove forest cover dynamics- a study on Ajmalmari reserve forest, Sundarban, West Bengal. Int J Remote Sens Geosci 2(1):16–21Google Scholar
  13. Samanta AK, Panda S (2012) Mangroves of Andaman island: a systematic approach. In: Samanta AK, Panda S (eds) Some aspects of coastal vegetation in India including Andamans and Sundarbans. Ramnagar College, Depal, pp 172–188Google Scholar
  14. Thom BG (1967) Mangrove ecology and deltaic geomorphology: Tabasco, Mexico. J Ecol:301–343Google Scholar
  15. Thom BG (1982) Mangrove ecology: a geomorphological perspective. Mangrove ecosystems in Australia. Australian National University Press, Canberra, pp 3–17Google Scholar
  16. Thom BG, Wright LD, Coleman JM (1975) Mangrove ecology and deltaic-estuarine geomorphology: Cambridge Gulf-Ord River, Western Australia. J Ecol:203–232Google Scholar
  17. Valiela I, Bowen JL, York JK (2001) Mangrove forests: one of the world’s threatened major tropical environments at least 35% of the area of mangrove forests has been lost in the past two decades, losses that exceed those for tropical rain forests and coral reefs, two other well-known threatened environments. Bioscience 51(10):807–815CrossRefGoogle Scholar
  18. Woodroffe CD, Lovelock CE, Rogers K (2013) Mangrove shorelines. In: Masselink G, Gehrels R (eds) Coastal environments and global change. AGU WILEY, UK, pp 251–267Google Scholar

Copyright information

© Springer International Publishing AG 2017

Authors and Affiliations

  • Ashis Kr. Paul
    • 1
    Email author
  • Ratnadip Ray
    • 1
  • Amrit Kamila
    • 2
  • Subrata Jana
    • 1
  1. 1.Department of Geography and Environment ManagementVidyasagar UniversityMidnaporeIndia
  2. 2.Department of Remote Sensing and GISVidyasagar UniversityMidnaporeIndia

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