An Analysis of Climate Variability in Pichavaram Mangrove 1991-2010

Abstract

Mangrove wetland is a multiple-use ecosystem, covering 8% of the world’s coast and 25% of the tropical coastline. (MSSRF-2002) It performs a number of protective and productive functions. It acts as a barrier against cyclonic storms and avoids coastal erosion. It provides nursery grounds for a number of commercially important species of fish, prawn and crab. Pichavaram has a tropical in nature. The annual average temperature is 28.4⁰C and average annual rainfall is about 1270 mm. Mostly average rainfall in November 358 mm. In winter there is much more rainfall in Pichavaram than in summer. The studies highlight and assess the spatial distribution of rainfall Pichavaram in Cuddalore District for the period of 1991 to 2011. The main objectives of this study to assess the pre and post monsoon and its impact on mangrove eco system in Pichavaram. The impact of climate change on mangrove ecosystem is likely to be difficult to discern from that caused by anthropogenic factors, especially in developing nations are depending on climate sensitive sectors like agriculture and fishing for their basic livelihood. The present study recognizes the context of assesses the spatial distribution of rainfall and its effectiveness, adaptation options and provides a simplistic framework to understand the nexus between locally driven livelihoods based climate variability for both agriculture and fishing communities in the coastal areas of Pichavaram in Cuddalore district. The climate data analyses and indicated changes in climate variability due to extreme events have significant impacts on the local livelihoods. The study has implication for sustainable adaptation calling for strengthening local level actions.