Das A.K.,Earth System science Organisation ESSO National Institute of Ocean Technology |
Jha D.K.,Earth System science Organisation ESSO National Institute of Ocean Technology |
Devi M.P.,Bharathidasan University |
Sahu B.K.,Earth System science Organisation ESSO National Institute of Ocean Technology |
And 2 more authors.
Journal of Coastal Conservation | Year: 2014
The present study was carried out to determine the mangrove area water quality, mangrove diversity and density at Minnie Bay, Lalaji Bay and Aerial Bay (Andaman Islands, India). The physicochemical parameters such as salinity, nitrate, inorganic phosphate and total phosphorus varied significantly. Mangrove diversity was high at Minnie Bay while density at Aerial Bay. Rhizophora mucronata dominated at all three sites during the study period. Shannon-Wiener diversity index (H′ = 2.261) and Pielou's evenness (J′ = 0.8348) were high at Minnie Bay. The higher species density cover (5.679 Nos./m2) was recorded at Aerial Bay. Bray-Curtis cluster analysis showed 63.35 % similarity and formed two clusters. Though uplift and subsidence of coastal land due to the Mw 9.3 Sumatra earthquake in 2004 has affected the mangrove vegetation, its rejuvenation was observed in the newly formed inter-tidal areas due to changes in coastal geomorphology. The comparative study on physicochemical parameters, mangrove coverage and conservation are discussed in detail. © 2014 Springer Science+Business Media Dordrecht.
Deepa S.,Earth System Science Organisation ESSO National Institute of Ocean Technology |
Sathish T.,Earth System Science Organisation ESSO National Institute of Ocean Technology |
Vinithkumar N.V.,Earth System Science Organisation ESSO National Institute of Ocean Technology |
Limna Mol V.P.,Government of Tamilnadu |
Kirubagaran R.,Government of Tamilnadu
International Journal of Environmental Research | Year: 2015
Flora and fauna of rocky coastal habitats are versatile in adapting to the prevalent tidal fluctuations. The current study was undertaken to evaluate the diversity of fouling and associated species around the Port Blair coastal areas of Andaman and Nicobar Islands. Except TSS, the hydrographical parameters (temperature, salinity, pH and dissolved oxygen) did not significantly vary among the 5 selected stations. Fifty one species of macrofoulers were recorded belonging to macroalgae (8 species), porifera (1 species), cnidaria (9 species), bryozoa (3 species), polychaete (5 species), crustacea (6 species), mollusca (15 species), echinoderm (2 species), and tunicate (2 species). The species Balanus amphitrite, Tetraclita squamosa and Saccostrea cuccullata were dominant in all the stations. The maximum macrofoulers density was observed at Chatham (95 ± 0.81 individuals/m2) and the minimum (30 ± 4.49 individuals/m2) at Minnie Bay. Cluster analysis and principal component analysis indicated that arthopods and molluscs are predominant in the fouling community. © 2015, University of Tehran. All rights reserved.