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Assessment of plankton diversity and physico-chemical characteristics for sustainable fish production in a tropical reservoir in South India

Indian Agricultural Research Journals

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Title Assessment of plankton diversity and physico-chemical characteristics for sustainable fish production in a tropical reservoir in South India
 
Creator Panikkar, Preetha
Khan, Feroz
V. L. Ramya
Saha, Ajoy
M. E. Vijaykumar
Sarkar, U. K.
P. K. Jesna
Das, B. K.
 
Description Plankton forms an important component of the aquatic ecosystem and act as indicators of fish diversity, pollution levels and environmental disturbances. They form an important natural fish food resource and play a vital role in the trophic structure of the ecosystem. In the present study a systematic assessment of the community distribution and diversity of plankton was conducted in the Karapuzha Reservoir in South India. Thirty six genera of phytoplankton belonging to 4 classes viz, Chlorophyceae, Bacillariophyceae, Dinophyceae and Myxophyceae were identified. Eleven genera of zooplankton belonging to four classes; Protozoa, Rotifera, Cladocera and Copepoda were also recorded. The Jaccard index of similarity showed that pre-monsoon and monsoon seasons shared a similar plankton composition. Diversity indices revealed the highest values during monsoon, while the Dominance index indicated the highest species dominance during post-monsoon (0.199) followed by pre-monsoon (0.1445) and monsoon (0.1417). Water quality parameters were found to have a significant correlation with plankton abundance in the reservoir. ShannonWeiner index indicated that the Karapuzha Reservoir ecosystem is moderately polluted. Seasonal variations in plankton composition showed the highest species abundance during the pre-monsoon followed by post-monsoon and monsoon seasons.
 
Keywords: Diversity index, Plankton abundance, Planktivorous fish, Reservoir ecosystem, Seasonal variation
 
Publisher Central Marine Fisheries Research Institute (on behalf of Indian Council of Agricultural
 
Date 2024-09-30
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier https://epubs.icar.org.in/index.php/IJF/article/view/147246
10.21077/ijf.2024.71.3.147246-05
 
Source Indian Journal of Fisheries; Vol. 71 No. 3 (2024)
0970-6011
 
Language eng
 
Relation https://epubs.icar.org.in/index.php/IJF/article/view/147246/56038
 
Rights Copyright (c) 2024 Indian Journal of Fisheries
https://creativecommons.org/licenses/by-nd/4.0