Phytoplankters of a fish pond at Anjale, Maharashtra

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The present paper deals with abundance, periodicity and composition of phytoplankton in relation to physico-chemical factors of fish pond at Anjale, Dist. Jalgaon, Maharashtra. It was observed that members of Bacillariophyceae were dominant amongst other algal groups. This dominance was followed serially by Chlorophyceae, Myxophyceae, Euglenineae and Dinophyceae.

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... Monthly occurrence of different groups of phytoplankton density is given in table 2. Genus compositions of different groups are shown in Figures 1-5. Kumawat and Jawale (2003) recorded 50 species of phytoplankton from a fish pond at Anjale, Maharashtra. Nafeesa Begum et al. (2011) recorded 56 species of phytoplankton from a Bethur pond near Davangere, Karnataka. ...
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The present paper deals with the study of Phyto and Zooplankton population in Kapla beel. Qualitative and quantitative study of plankton, their seasonal variation and ecological indices were recorded during the period of 2003-2005. Thirty two species of phytoplankton were recorded belonging to Cyanophyceae (Blue-Green algae), Chlorophyceae, Bacillariophyceae and Desmidiaceae. Fifty two species of Zooplankton were observed belonging to protozoa, Copepoda, Cladocera, Rotifers, Damselfly nymph, Hemiptera, Cranefly larvae, Trichoptera, Coleoptera and Dragonfly nymph. The plankton population showed variation in different seasons.
The algal diversity of the Ganikere tank of Sagara town of Shivamogga district was studied for a period of six months from January to June 2007. During the period of investigation 79 species of phytoplankton representing five main taxonomic groups such as Chlorophyceae, Cyanophyceae, Euglenophyceae, Bacillariophyceae and Desmids were recorded. Relative abundance of phytoplankton in Ganikere tank showed maximum of Bacillariophyceae (34.17%), followed by Chlorophyceae (29.11%), Cynophyceae (17.72%), Euglenophyceae (12.65%) and Desmids (6.32%). Microcystis aeroginosa, Merismopedia glauca, Euglena gracilis and Scenedesmus quadricauda were the common pollution indicators.
The culture of Indian major carps in the environs of lake Kolleru has developed tremendously and the carp yield in different ponds per unit area is markedly varying from 2 to 15 t/ha/year. This variation is mainly due to the different managerial practices adopted in this area with respect to the quality and quantity of different inputs such as fish stocking densities, fertilizers, supplementary feeds and maintenance of environmental factors. To know the impact of such variations on fish yield, three different carp culture ponds were selected. The fish yields obtained were 3.76, 5.75 and 14.63 t/ha/year in pond A, B and C respectively. The cumulative effect of the factors manipulated in the three ponds was studied and the results were discussed based on the managerial practices adopted.
A comparative account of the plankton ecology of five fish tanks in Delhi is given. Variations in the physical and chemical characteristics of water such as temperature, turbidity, total residue, pH, free carbon dioxide, carbonate alkalinity, total alkalinity, total hardness, chlorides, dissolved oxygen, oxygen consumed, phosphates, nitrates, silicates and sulphates observed for a period of one year are described. Chemical characteristics of water vary to a great extent in the five tanks. The dry summer and the monsoon rains considerably influence the physical and chemical conditions of water. The quantitative variations in the phytoplankton populations are presented. Compared to temperate waters, the tanks in Delhi show a richer variety of organisms. The largest number of genera is noted among the green algae. Desmids are poorly represented in all the tanks. The phytoplankton populations show a regular winter maximum which is caused by diatoms. Observations on the quantitative variations in the major groups of zooplankton are presented. Zooplankton population is represented by many genera. The dominant group among the zooplankton is the Rotifera which shows a summer maximum. There is no significant correlation between the phytoplankton and the zooplankton.
This paper describes the diatom flora of the Grand River, Ontario, Canada. Samples were collected systematically from the river over a period of several years at tweleve stations. The diatom flora of the river is typical of temperate alkaline rivers. The flora is rich in species and variaties, and is similar to that from many parts from North Eastern United States. A total of 273 taxa of diatoms were identified. There is a tendency for the number of species per sample to increase downstream. The flora of the estuary in characteristic with a great variety of taxa occuring in small numbers. Most of the species are alkaliphilous and indifferent in the halolian spectra.