Seasonal Distribution of Halophilic Bacterial Population in Water andSediment at Muthupet Mangrove, Tamilnadu

Elixir Pollution 04/2012; 44:7320-7323.

ABSTRACT Introduction In this largest marine habitat mangroves are the most productive ecosystem. Mangrove ecosystems are dominant ecosystems along tropical coastlines (Govindasamy et al. 2011). Mangrove ecosystem are open ecosystem (Kathiresan, 2000), which exchange matter and energy which the adjacent marine terrestrial ecosystem. However, they are found to differ in their "energy signature" or the sum of all forces which dictates the type of organisms that will survive and speed of ecological process (Cintron and Novelli, 1984). In recent years there has been a rediscovery of many values of mangrove ecosystem namely biological, ecological, functional, medical and economic values (Odum, 1972; Azariah, 1992). At the ecological level, mangrove serve as nursery feeding and spawning grounds for commercial fish and wind damage and prevent soil erosion. It also serves as nesting and feeding ground for a variety of wildlife and as a coastal sink or trap for pollutants. The allochthonous detritus produced by mangroves is more important source than phytoplankton in the estuarine area. Mangroves are important in the detritus based food chain and food web (Govindasamy et al. 2011 ; Chendur Palpandi, 2011; Paramasivam et al. 2011).The bacteria have also been recognized as a large and active component of marine and mangrove ecosystem (Pomeroy, 1979; Mastaller, 1996; Gina Holguin et al. 2001) and that the halophilic bacteria are acting as large and acting as major consumer of dissolved organic matter in the mangrove ecosystem and are of considerable importance in nutrient regeneration and decomposing activity. Such as an important mangrove halophilic bacterium is now being decreasing stage and exploited in various marine sources due to pollution increasing. From this view point, the paper examines the sensational variation of halophilic bacteria and its distribution in the Muthupet mangrove forest, which is located on one of the deltaic branches of the southern part of the Cauvery delta. The paper also provides baseline information on halophilic bacteria of dynamic mangrove ecosystem, Bay of Bengal. Materials and Methods Area Distribution Muthupet is a coastal village of Thanjavur district, where an extensive mangrove swamp is located at the southern end of the Cauvery delta (Lat.10 o 15'N; Long.79 o 30'E) (Fig. 1). A total number of two station were located in the muddy area and at low tide region station 1(Manakkathu lagoon) was located 1 km upstream from station 2 (Sethuguda). It is situated near the place where the Korayar River joins the lagoon and it's surrounded by pure stands of Avicennia marina. At the time of high tide the depth is about 1 meter and during the low tide time, the width of the river is about 40 meters from highest high tides to lowest low tide mark and the substratum is muddy in nature. Figure 1: Map showing the Study Area

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