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Naik, Subrat
- Spatio-temporal Distribution of Zooplankton in Chilka Lake- a Ramsar Site on the Indian East Coast
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Authors
Affiliations
1 Department of Marine Sciences, Berhampur University, Bhanjabihar, Berhampur-760007. Orissa, IN
2 Department of Environmental Sciences, Fakir Mohan University, Balasore, Orissa, India, IN
1 Department of Marine Sciences, Berhampur University, Bhanjabihar, Berhampur-760007. Orissa, IN
2 Department of Environmental Sciences, Fakir Mohan University, Balasore, Orissa, India, IN
Source
Indian Journal of Science and Technology, Vol 1, No 3 (2008), Pagination: 1-5Abstract
The spatio-temporal variation in zooplankton species composition, population density and relative abundance in Chilka lake studied during pre-monsoon (May), monsoon (August) and post-monsoon (October) showed conspicuous fluctuations. The average population density varied between 218 and 1296 org. m-3; while the biomass values ranged from 1.72- 3.30 gm-3. Copepods, chaetognaths, cladocerans, mysids, lucifers, euphausids, siphonophores and sergestids have emerged as dominant groups. Copepods alone contributed nearly 70% of total density. The distribution of zooplankton found to be significantly influenced by salinity variations. Role of other physico-chemical parameters and food supply could also be taken as important factors influencing the sector wise distribution of zooplankton in the lake system.Keywords
Chilka Lake, Zooplankton, Biomass, AbundanceReferences
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- Marine Litter:Post-Flood Nuisance for Chennai Beaches
Abstract Views :322 |
PDF Views:91
Authors
Umakanta Pradhan
1,
Subrat Naik
1,
Mehmuna Begum
1,
S. Sujith Kumar
1,
Uma Sankar Panda
1,
Pravakar Mishra
1,
M. V. Ramana Murthy
1
Affiliations
1 National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, PaUikaranai, Chennai 600 100, IN
1 National Centre for Coastal Research (NCCR), Ministry of Earth Sciences, Government of India, NIOT Campus, PaUikaranai, Chennai 600 100, IN
Source
Current Science, Vol 115, No 8 (2018), Pagination: 1454-1455Abstract
Anthropogenic litter on the coastal beaches, sea surface and seabed has increased in the recent decades across global oceans1. Also, massive plastic production and usage have accumulated plastic waste of 4.8-12.7 million metric tonnes (MMT) annually2, posing a serious threat to marine ecosystem and beach aesthetics3. Recently, production and usage of plastic in India have increased manifold. Nearly 8 million tonnes of plastic products is being used annually, generating about 1.5 million tonnes of plastic waste with less than a quarter of it being collected and treated4. Marine litter originating from untreated urban sewage, tourism, fishing, ports and other activities usually finds its way to the coast through rivers, creeks and waterways. Hence, it becomes necessary to quantify the amount of solid waste that contributes towards polluting the coastal environment. Usually, after a spell of heavy rains, flooding of waterways causes huge amounts of garbage to pile up along the coastline. As a part of the coastal clean up programme under the aegis of the Swachh Bharat Abhiyan (Clean India Mission) campaign, an attempt was made to quantitatively and qualitatively assess the litter reaching Chennai beaches, so that the on-going management practices can be suitably adapted.References
- Ryan, P. G., In Marine Anthropogenic Litter (eds Bergmann, M., Gutow, L. and Klages, M.), Springer, Switzerland, 2015, pp. 1-25.
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- Singh, P. and Sharma, V. P., Proc. Environ. Sci., 2016, 35, 692-700.
- Computed from report on ‘District wise daily/seasonal rainfall distribution for Tamil Nadu and Puducherry of date 11 November 2017’, India Meteorological Department, Government of India, Ministry of Earth Sciences, Regional Meteorological Centre, Chennai.