The paper discusses the correlation between the Catch per Unit Effort (CPUE) of fishes with the phytoplankton biomass (chlorophyll-a) and nutrients in the West Bengal marine fishing zone (northern Bay of Bengal) during the post-monsoon season of 2010-11 and 2011-12. A total of 12 Potential Fishing Zone forecasts were simultaneously validated on board, covering 70 random samplings points wherein the physico-chemical parameters were also measured. A strong positive correlation of the CPUE with phytoplankton biomass was observed. The CPUE also positively correlated with the essential nutrients like dissolved inorganic phosphate (DIP), dissolved inorganic nitrate (DIN) and silicate. Four components were figured out in the principal component analysis out of 11 environmental variables. The first component primarily consisted of salinity, Secchi depth (positive loadings), turbidity and dissolve oxygen (DO) (negative loadings). Increases in component 2 were associated with increases in nutrients (silicate, nitrate and phosphate). The CPUE was much higher (8.15±6.08 kg/hour) in the PFZ forecast zones compared to the areas outside the forecast area (3.51±1.61 kg/hour)
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Ali, M.M., Roa, H.K., Rao, M.V. and Sridhar, P.N. 2010. Oceans. Chapter 9, pp 217-250. Edited by Roy, P.S., Dwivedi, R.S. and Vijayan, D. Romote Sensing Applications; National Remote Sensing Centre. Ansari, Z.A., Sreepada, R.A., Dalal, S.G., Ingole, B.S. and Chatterji, A. 2003. Environmental influences on the trawl catches in a bay-estuarine system of Goa, west coast of India; Estuarine, Coastal and Shelf Science 56 503–515. doi:10.1016/S0272-7714(02)00201-9
Bhaware, B. G., Kurhe, A. R. and Mane, U. H. 2013. The Catch per Unit Efforts (CPUE) through Validations of Potential Fishing Zone Advisories along Sindhudurg District Coast of Maharashtra State. IJPBSF International Journal of Pharmaceutical and Biological Sciences Fundamentals, 3(01).
Blaber, S. J. M. and Blaber, T. G. 1980. Factors affecting the distribution of juvenile estuarine and inshore fish. Journal of Fish Biology 17, 143–162. DOI: 10.1111/j.1095-8649.1980.tb02749.x
Choudhury, S.B., Jena, B., Rao, M.V., Rao, K.H., Somvanshi, V.S., Gulati, D.K. and Sahu, S.K. 2007. Validation of integrated potential fishing zone (IPFZ) forecast using satellite based chlorophyll and sea surface temperature along the east coast of India. International Journal of Remote Sensing, 28(12), 2683-2693. DOI:10.1080/01431160600987878
Deshpande, S.P., Radhakrishnan, K.V. and Bhat, U.G. 2011. Direct and indirect validation of potential fishing zone advisory off the coast of Uttara Kannada, Karnataka. Journal of the Indian Society of Remote Sensing, 39(4), 547-554. Doi. 10.1007/s12524-011- 0104-4
Dutta, S., Maity, S. and Hazra, S. 2014. Catch Per Unit Effort Comparison between Potential Fishing Zone and non-Potential Fishing Zone from 2008 to 2011 of West Bengal coast in India; Accepted in Indian Journal of Marine Sciences.
Dwivedi, S.N. and Choubey, A. K. 1998. Indian Ocean Large Marine Ecosystem: Need for National and Regional Framework for Conservation and Sustainable Development; p 361-368 in: K. Sherman, E. Okemwa and M. Ntiba (eds), Indian Ocean Large Marine Ecosystem of Indian ocean: Assessment, Sustainability, and Management. Blackwell Science Inc. Cambridge, M.A.
Frederiksen, M., Edwards, M., Richardson, A.J., Halliday, N.C. and Wanless, S. 2006. From plankton to top predators: bottom-up control of a marine food web across four trophic levels; Journal of Animal Ecology 75 1259–1268. 10.1111/j.1365-2656.2006.01148.x
Gordon, A.L., Giulivi, C.F., Takahashi, T., Sutherland, S., Morrison, J. and Olson, D. 2002. Bay of Bengal nutrient-rich benthic layer; Deep-Sea Research II 49 1411 – 1421. doi:10.1016/S0967-0645(01)00161-8
Gulland, J.A. 1983. Fish stock assessment: A Manual of Basic Methods. John Wiley and Sons, New York. Heileman, S., Bianchi, G. and Funge-Smith, S. 2010. VII-10 Bay of Bengal: LME#34.
Hoyer, M.V., Frazer, T.K., Notestein, S.K. and Canfield, Jr. D.E. 2002. Nutrient, chlorophyll, and water clarity relationships in Florida’s nearshore coastal waters with comparisons to freshwater lakes; Can. J. Fish. Aquat. Sci. 59 1024–1031. 10.1139/f02-077
Kupschus, S. and Tremain, D. 2001. Associations between fish assemblages and environmental factors in nearshore habitats of a subtropical estuary; Journal of Fish Biology 58 1383–1403. 10.1111/j.1095- 8649.2001.tb02294.x
Lanz, E., Nevarez-Martinez, M., Lopez-Martinez, J. and Dworak, J.A. 2009. Small pelagic fish catches in the Gulf of California associated with sea surface temperature and chlorophyll; CalCOFI 50.
Madhupratap, M., Gauns, M., Ramaiaha, N., Prasanna, S.K., Muraleedharana, P.M., Sousaa, S.N.de., Sardessai, S. and Muraleedharanb, U. 2003. Biogeochemistry of the Bay of Bengal: physical, chemical and primary productivity characteristics of the central and western Bay of Bengal during summer monsoon 2001; Deep-Sea Research II 50 881–896. doi:10.1016/S0967-0645(02)00611-2
Maes, J., Van Damme, S., Meire, P. and Ollevier, F. 2004. Statistical modeling of seasonal and environmental influences on the population dynamics of an estuarine fish community; Marine Biology 145 1033–1042. 10.1007/s00227-004-1394-7
Manna, S., Chaudhuri, K., Bhattacharyya, S. and Bhattacharyya, M. 2010. Dynamics of Sundarban estuarine ecosystem: eutrophication induced threat to mangroves; Saline Systems 6:8. DOI: 10.1186/1746- 1448-6-8
Manasrah, R., Raheed, M. and Badran, M.I. 2006. Relationships between water temperature, nutrients and dissolved oxygen in the northern Gulf of Aqaba, Red Sea; Oceanologia 48 (2) 237–253.
Mukhopadhyay, S.K., Biswas, H., De, T.K. and Jana, T.K. 2006. Fluxes of nutrients from the tropical River Hooghly at the land–ocean boundary of Sundarbans, NE Coast of Bay of Bengal, India; Journal of Marine Systems 62 9–21. doi:10.1016/j.jmarsys.2006.03.004
Nammalwar, P., Satheesh, S. and Ramesh, R. 2013. Applications of Remote Sensing in the validations of Potential Fishing Zones (PFZ) along the coast of North Tamil Nadu, India. Indian Journal of GeoMarine Sciences, 42(3), 283-292.
Nyitrai, D., Martinho, F., Dolbeth, M., Baptista, J. and Pardal, M.A. 2012. Trends in estuarine fish assemblages facing different environmental conditions: combining diversity with functional attributes; Aquat Ecol 46 201–214. 10.1007/s10452- 012-9392-1
Pillai, V.N. and Nair, P.G. 2010. Potential fishing zone (PFZ) advisories-Are they beneficial to the coastal fisherfolk? A case study along Kerala coast, South India. Biological Forum — an International Journal 2(2): 46-55.
Prasanna, K.S., Sardesai, S., Ramaiah, N., Bhosle, N.B., Ramaswamy, V., Ramesh, R., Sharada, S.M.M., Sarupriya, J.S. and Muraleedharan, U. 2007. Bay of Bengal process studies (BOBPS) Final Report. Final Report Submitted to the Department of Ocean Development New Delhi, 142 pp. http://drs.nio.org/drs/handle/2264/535
Preston, G.L. 2004. Review of the status of Shared/Common Marine Living Resources Stocks and of Stock Assessment Capability in the BoBLME Region. Bay of Bengal Large Marine Ecosystem (BobLME) Theme report, FAO-BOBLME Programme.
Solanki, H.U., Mankodi, P.C., Nayaka, S.R. and Somvanshi, V.S. 2005. Evaluation of remote-sensingbased potential fishing zones (PFZs) forecast methodology; Continental Shelf Research 25 2163– 2173. doi:10.1016/j.csr.2005.08.025
Solanki, H.U., Prakash, P., Dwivedi, R.M., Nayaka, S.R., Kulkarni, A. and Somvanshi, V.S. 2010. Synergistic application of oceanographic variables from multisatellite sensors for forecasting potential fishing zones: methodology and validation results; International Journal of Remote Sensing 31 (3) 775– 789. DOI:10.1080/01431160902897833
Solanki, H.U., Dwivedi, R.M., Nayak, S., Gulati, D.K., John, M.E. and Somvanshi, V.S. 2003. Potential Fishing Zones (PFZ) Forecast Using Satellite Data Derived Biological and Physical Processes; Journal of the Indian Society of Remote Sensing 31 2. 10.1007/BF03030773
Srinivasa Kumar, T., Nagaraja Kumar, M. and Nayak, S. 2008. Benefits derived by the fishermen using Potential Fishing Zone (PFZ) Advisories. Proc. of SPIE Vol. 7150 71500N-1. doi:10.1117/12.804766
Vijayakumaran, K. 2005. Productivity parameters in relation to hydrography of the inshore surface waters off Visakhapatnam; J. Mar: Biol. Ass. India 47 (2) 115 - 120. http://eprints.cmfri.org.in/id/eprint/2051