e - poz 2 - Central Institute of Brackishwater Aquaculture

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The study indicates Ihe necessity of maintaining the continuity of the lake berween bothsides of the barrage so that the tidal washings during the p msoon months enabks tonaturally llush out the wades and thefeby mkKing ttte 1ves5 on the environment at thisSector.The continuity would also ensure the upward and downwad migration of the lish andprawn any time during the year making the whok lake available to the euryhalinespecies. This would ~ubstantially improw the fishery of the lake as a whole. The upwardand downward migration of the Macrobrachiurn specter also would be facilitated lead~ngto the rejuvenation of its fishery. The changes w l d haw a salutary effect on the socioeconomiccondition 01 the lisherfolk engaged in fishery 01 the lake.It is tberelore suggested that there should be only periodic closure of barrage rather thanpermanently remained closed for about 4-5 months. The periodicity should depend onthe tidal amplitude so that the'second crop olpaddy cuhivation is not adversely affecteddue to the salinity intrusion, and the tidal amplitude does not reach the intake polnt ofdrinking water lor the Kottayam town in Meenachal river.
BIBLIOGRAPHY ON VEMBANAD LAKEAnon. 1W7. K W wllcr balm study . Dr& Fid Rcporl. Vdunc 1: M*n kopl. 6 Voh. W.CO(Kdtiw Wmn BCqmS, Kaypef and Hwruurd. Kin&m d the Nahdnd. Mhkwy d Fotwivalhirr.Ansan. Z. A.. 1974. Mahasagar, 7 : 197.Aravindakshan. P, Balasubra~nian. N . Lalithamb~ka ONi, 1. ~ l a k C ~ 0. Nllr, ~ T . C.IayalaWm~. K V a d Knshnan Ku(h/. M 1992 B m h and substratum channml~~ d pnvm culhrrfields in and around Cochin backwater I Mar Btol Ass Indu, 34 llL2) 203-217Bal&nshnan Nair. N. ad Govindankunv, A. G. 1972. Obmatnmr on the cdoniulor d @dad ud, by hcinterr~ittal fauna d theSouth.Wet coast d Indta. Proceedrngs olthe Indun Nal k~. Ad. 38 (31: 251.256.Balaknshnan. A. 1957. Vanat~on of salinity adtemperature in the Emdiulm chnnd.Bull Cenr Res Inst.. 2 . 7-9.Chdndrdsekharan Na~r, K K and Tranter, D 1 1971 Zooplankton distnbutton dm dimly gdm* mCoch~n backwater before and after the monsoon I Mar Bm Asso lnd~a 13 (2) 205210Chertan. P V 1967 H@rol~ical studm In and around the Coch~n harbour Bull Dcpf Mar Bud m lOceanogr , Url~v Kerala. 3 9.1 7Devassy, V. P. and Bhattath~r~. P. M A. 1974. Phytoplankton ecdogy of the Coch~n bxkwatm lndrpn IMar Scr . 3 . 46-50Devassv. V P and Goplnathdn. C. K. 1970. Fish Tuhnol, 7. 190.k t , B N. and Knshnan kutty. M. 1967. Studla on the bmth~c fauna of Cochln backwau. Pmr IndianAcad SCI . 668 . 123.142.Eswarapraud, P 1982 Studla on mls d ~omc brackish wlnr prmn culture ftrldr uwnd Cochin M ScDrssenat~on. Univen~ty d Cochin, KahiGeorge. K. C. 1965. On the unusual fishery for the twckeral in the Cochin &warn.Indrd. 7 11): 219-222.I M.r. Bd. AssGeorge, M 11958 Ghmat~ons on the plankton d the Cahin bxkwaten. lndran I. Fnh. 5 (2): 37-1.Ccroge. M. 1. and Kanha, K. N. 1%3.BI~. Ass Indra. 5 : 178-184Surfxe salinity d Cahtn bxkwm with r rkme eo tdc. I. Mu
Page 2 and 3: Ecology and Fisheries Investigation
Page 4: The Vembened take on the south-west
Page 7 and 8: The lakc had already been reclatd c
Page 9 and 10: from the orig~nal marine environmen
Page 11: of this century. The current lwei o
Page 14 and 15: The project was implemented partial
Page 16 and 17: The barrage at Thanneerrnukkom acro
Page 18 and 19: INvISTGATIONS ON THE FISHERY ECOLOG
Page 21 and 22: Several literatures are available o
Page 23 and 24: ECOLOGICAL INVESTffiATtONS WRING 19
Page 25 and 26: so.
Page 28 and 29: The sediment texture showed that sa
Page 31 and 32: summer. The pure saline forms that
Page 33 and 34: eporxd by Nair et al. (1983) was di
Page 35 and 36: lhJm md tabqodr Onty m spxlcr m6emd
Page 37: A view of the endangered fish speci
Page 41 and 42: Urcrobrachium rosenbergir 57 930 47
Page 43: The study reveals that the Thanneen
Page 48 and 49: m,T.R. Mii(l. Y. nd Wli, C. M. 1984
Page 50 and 51: Smlathan, P., MccoJuMkr~y, N. I., r
Page 52: I. E-. Mu. bid. E d.I. lndln FWI. A

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