Diurnal fluctuation of the phytoplankton and zooplankton population (numerical densities) and the physicochemical attributes of water are studied in an aquaculture pond at Guwahati, Assam. In the 24 hour diel cycle, the phytoplankton and zooplankton show significant (t-test, p < 0.01) variation in their numerical density at an interval of 4 hours. The studied physico-chemical parameters of water included Temperature, Total Alkalinity (TA), Total hardness (TH), Dissolved Oxygen (DO), Free Carbon dioxide (FCO2) and pH are analyzed concurrently, which reveals a significant fluctuation (t-test, p< .01) in the day and night hours. Multivariate correlation analysis portrays significant and positive correlations among the total population density of phytoplankton with respect to water temperature (r = 0.845, p<0.05) and pH (r = 0.881, p< 0.01) while it maintains significant negative correlations with TA (r = -0.837, p<
0.05), TH (r = -0.768, p< 0.05) and FCO2 (r = -0.830, p<0.05). However, total numerical density of zooplankton reveals positive and significant correlations with TA (r = 0.842, p< 0.05) and FCO2 (r= 0.758, p< 0.05) while it shows significant negative correlations with water temperature (r = -0.906, p< 0.01) and pH (r =- 0.912, p< 0.01).
Aquaculture pond, Diurnal variation, Heleoplankton, Physico-chemical parameters
Blaauboer, M.C.I. (1982). The phytoplankton species composition and the seasonal periodicity in Lake Vechten from 1956 to 1979. Hydrobiologia, 95 : 25-36.
Chang, Kwang-Hyeon and Hanazato, T. (2004). Diel vertical migrations of invertebrate predators (Leptodora kindtaii, Thermocyclop taihokuensis and Mesocyclop sp.) in shallow eutrophic lake. Hydrobiologia, 528 : 249- 259.
Cressa, Claudia (1993). Diel variations in some chemical variables of the Orituco River, Venezuela. Ecotropicos, 6 (2) : 30-42
Easton, J. and M. Gophen, M. (2003). Diel variation in the vertical distribution of fish and plankton in Lake Kinneret: a 24-h study of ecological overlap Hydrobiologia 491: 91-100
Edmondson, W.T. (1959). Fresh Water Biology, 2nd ed. International Books and Periodical Supply Service, New Delhi, pp.xx + 1248 pp.
Gaur, Rajeev K. and Khan, Asif Ali (1995). Diurnal profile of some physico-chemical and biological parameters in a freshwater lentic ecosystem with a permanent bloom of a Cyanobacterium, Micrcystis aeroginosa (Kuetz.). J. Freshwater Biol., 7 (3) : 169-175.
Goswami, M.M. (1985). Limnological Investigations of a tectonic lake of Assam, India and their bearing on fish production. Unpublished Ph.D. Thesis, Gauhati University, Assam. pp. 395
Hanazato, T. and Yasuno, M. (1989) Zooplankton community structure driven by vertebrate and invertebrate predators. Oecologia, 81: 450–458
Haney, J.F. (1993) Environmental control of diel vertical migration behaviour. Arch Hydrobiol Beih Ergeb Limnol 39: 1–17
Horpilla, J., Malinen, T., Nurminen, L., Tallberg, P. and Vinni, M. (2000) A metalimnetic oxygen minimum indirectly contributing to the low biomass of cladocerans in Lake Hiidenvesi - a diurnal study on the refuge effect. Hydrobiologia, 436:81–90.
Kemdirim, E.C. (2000). Diel rhythm of plankton and physicochemical parameters inKangimi Reservoir, Kaduna State Nigeria. J. Aquatic Science, 15 : 35-39
Lampert, W. (1993). Ultimate causes of diel vertical migration of zooplankton: New evidence for the predator-avoidance hypothesis. Arch. Hydrobiol. Beih., 39 : 79–88.
Lauridsen T.L., Jeppesen, E., Mitchell, S.F., Lodge, D.M. and Burks, R.L. (1999). Diel variation in horizontal distribution of Daphnia and Ceriodaphnia in oligotrophic and mesotrophic lakes with contrasting fish densities Hydrobiologia, 408/409: 241–250.
Leibold M.A. (1990). Resources and predation can affect the vertical distribution of zooplankton. Limnol Oceanogr 35:938–944
Melo Sergio de and Huszer Vera Lucia M. (2000). Phytoplankton in an Amazonian flood-plain lake (Lago Batata, Brasil): diel variation and species strategies. Journal of Plankton Research, 22 (1):63-76
Muluk, C.B. and Beklioglu, M. (2005). Absence of typical diel vertical migration in Daphnia : varying role of water clarity, food and dissolved oxygen in Lake Eymir, Turkey. Hydrobiologia, 537 : 125-133.
Nakajima, R., Yoshida, T. Othman, B.H.R. and Toda, T. (2008). Diel variation of zooplankton in the tropical coral-reef water of Tioman Island, Malaysia. Aquat. Ecol., DOI 10.1007/ s10452-008-9208-5
NEERI (1989). Manuals on water and waste water analysis: pp.320.
Pasternak, A.F., Mikheev, V.N. and Wanzenbock, J. (2006). How plankton Copepods avoid Fish predation: from individual responses to variations of the life cycle. Journal of Ichthyology, (46) : S220-S226.
Pennak, R.W. (1953). Freshwater invertebrates of the United States. Ronald Press Co. New York. pp.769.
Pinilla, Gabriel A. (2006). Vertical distribution of phytoplankton in a clear water lake of Colombian Amazon (Lake Boa, Middle Caqueta). Hydrobiologia, 568: 79-90
Reichwaldt E.S., Wolf I.D. and Stibor, H. (2005). Effects of a fluctuating temperature regime experienced by Daphnia during diel vertical migration on Daphnia life history parameters. Hydrobiologia, 543 : 199–205
Ringelberg J. and Van Gool E. (2003). On the combined analysis of proximate and ultimate aspects in diel vertical migration (DVM) research. Hydrobiologia, 491 : 85–90
Sarvala, J., Helminen, H., Saarikari, V., Salonen, S. and Vuorio K. (1998). Relations between planktivorous fish abundance, zooplankton and phytoplankton in three lakes of differing productivity. Hydrobiologia, 363 : 81–95.
Smith, G.M. (1971). Cryptogamic Botany. Algae and Fungi. Vol. I. T.M.H. edn. 546 pp. Mc. Graw Hill Book Co. Inc., New York.
Talling, J.F.(2004). Interrelation of diel and seasonal change, involving summer stratification, weather variables and a mobile dinoflagellate in a productive English lake. Hydrobiologia, 524: 215-227
Tatrai, I., Matyas, K., Korponai, J., Paulovits, G., Pomogyi, P. and Heri, J. (2003). Regulation of plankton by omnivore cyprinids in a shallow lake in the Kis-Balaton reservoir system. Hydrobiologia, 504 : 241-250.
Takamura, N. and Yasuno, M. (1984). Diurnal changes in the vertical distribution of phytoplankton in hypertrophic Lake Kasumigaura, Japan. Hydrobiologia, 112 (1) : 53-60.
Tonapi, G.T. (1980). Fresh water animals of India, an ecological approach, Oxford and IBH Publishing Co. Pvt. Ltd. New Delhi.
Verma, N. (1967). Diurnal variation in a fish pond in Seoni, India. Hydrobiologia, 30 (I): 129-36.
Welch, P.S. (1948). Limnological Methods, Blakiston, Philadelphia, pp.381.
Welch, P.S. (1952). Limnology. Mc Graw Hill Book Co. New York and London, pp.471
Zanatta, Sandra A., Orzco, B.R., Torres, Hurtado J.A.Z and Hernandez, A.P. (2007). Plankton rotifers from a tropical lake: Differences in distribution and migration patterns in two mixing events, with similar abiotic conditions. Hidrobiologica, 17 (1) : 1-10.
This work is licensed under Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) © Author (s)