scispace - formally typeset
Search or ask a question
Author

R. Purushothama

Bio: R. Purushothama is an academic researcher. The author has contributed to research in topics: Plankton & Zooplankton. The author has an hindex of 2, co-authored 2 publications receiving 13 citations.

Papers
More filters
Journal Article
TL;DR: In this paper, the diversity of zooplankton communities in Heggere tank, Kanale varies with the physico-chemical parameters of water, which indicates the nutrient status of water body.
Abstract: The present study reveals that the diversity of zooplankton communities in Heggere tank, Kanale varies with the physico-chemical parameters of water. The presence of different zooplankton community indicates the nutrient status of water body. The zooplankton communities were recorded more during the post monsoon and pre monsoon seasons. However, the variation of physico-chemical parameters of water in relation to zooplankton population has been discussed in detail in this paper. The trend of monthly occurrence of zooplankton was found as cladocerans>copepods>rotifers>protozoans.

7 citations

01 Jan 2011
TL;DR: Purushothan et al. as mentioned in this paper, H.R. Purushothama*, A. A. Gouddar and K. Harish KUMAR, K.V.S. College of Arts and Science, Kuvempu University, Shivamogga 577 201, Karnataka, INDIA Department of Environmental Science, Government First Grade College, Hosakote, Bengaluru, India.
Abstract: R. PURUSHOTHAMA*, H. A. SAYESWARA MAHESH ANAND GOUDAR AND K. HARISH KUMAR Department of Geology and Environmental Science, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga 577 203, Karnataka, INDIA Department of Zoology, Sahyadri Science College (Autonomous), Kuvempu University, Shivamogga 577 203, Karnataka, INDIA Department of Chemistry, D.V.S. College of Arts and Science, Kuvempu University, Shivamogga 577 201, Karnataka, INDIA Department of Environmental Science, Government First Grade College, Hosakote, Bengaluru, Karnataka, INDIA E-mail: purushothan_r@rediffmail.com

6 citations


Cited by
More filters
Journal Article
TL;DR: Aquatic ecosystems are known to support work to range of organism as mentioned in this paper. Among these organisms, Zooplankton are the free floating and microscopic animal found in aquatic ecosystem.
Abstract: Aquatic ecosystems are known to support work to range of organism. Among these zooplanktons are the free floating and microscopic animal found in aquatic ecosystem. The zooplanktons are important for fishes as they are used as source of food. The Zooplanktons are classified in various groups viz. Cladocera, Copepoda, Rotifer and Ostracoda. Many workers have studied the zooplanktons of fresh water bodies both in India and abroad. The biodiversity of phytoplankton and zooplankton are also rich in nature (Kangasabapathi and Rajan, 2010). Zooplanktons are playing important role in biomonitering of water pollution (Tyor et al., 2014). The availability of food is more due to decomposition of organic matter and the density of zooplankton might be high due to fewer predators (Shivashankar et al. 2013). The study of zooplankton is necessary to evaluate the fresh water reservoir in respect to their ecological and fishery status (Goswami and Mankodi, 2012).

12 citations

Journal ArticleDOI
TL;DR: In this article, the seasonal variations of zooplankton and selected physico-chemical variables (temperature, pH, Secchi disc transparency, dissolved oxygen, free CO2, bicarbonate, chloride, nitrate, phosphate and silicate concentrations) in the swamp of Purnia for one annual cycle (March 2007 to February 2008).
Abstract: Zooplankters occupy an intermediate position in food web and are good indicators of the changes in water quality, because they are strongly affected by environmental conditions and respond quickly to changes in water quality. Hence, qualitative and quantitative studies of zooplankton are of great importance. The present study was undertaken to quantify the seasonal variations of zooplankton and selected physico-chemical variables (temperature, pH, Secchi disc transparency, dissolved oxygen, free CO2, bicarbonate, chloride, nitrate, phosphate and silicate concentrations) in the swamp of Purnia for one annual cycle (March 2007 to February 2008). The zooplankton taxa collected from the swamp water belong to three dominant groups viz. rotifers, cladocera and copepods. 26 zooplankton species were identified in which 17 belong to rotifer, 5 to cladocera and 4 to copepod. Rotifers were the most dominant group showing highest percentage (47.38%) composition and diversity followed by cladocera (39.64%) and copepod (12.98%). The zooplankton density in different seasons was in order of summer> winter > monsoon. The diversity of the overall zooplankton shows high in summer winter (H'= 0.964), summer (H'= 0.821) and less in monsoon (H'= 0.789). Density, diversity and composition of zooplankton also exhibited monthly variations. Brachionus, Keratella, Filiina, Cyclops and Diaptomus indicated organic pollution in the swamp. Zooplankters showed negative correlation with pH and DO2 in summer season as well as with free CO2, nitrate and phosphate during monsoon and winter. Further zooplankters exhibited negative correlation with water temperature and pH in monsoon and winter seasons respectively. The study established possible influences of the change in water quality to zooplankton population.

5 citations

Journal ArticleDOI
TL;DR: In this article, the seasonal and spatial variation in the species diversity and abundance of zooplankton fauna in Ede-Erinle reservoir was determined with the view to determining the effects of the physico-chemical characteristics of water on the distribution and abundance in the reservoir.
Abstract: The study determined the seasonal and spatial variation in the species diversity and abundance of zooplankton fauna in Ede-Erinle reservoir. This was with the view to determining the effects of the physico-chemical characteristics of water on the zooplankton distribution and abundance in the reservoir. A total of 22,628 zooplankters comprising 101 species, 57 genera and five (5) groups (viz. rotifers, cladoceras, copepods, ostracods anddipterans) were collected and identified. The rotifers were the most specious (57 species) while the ostracods were the least (4 species). The copepods were the most abundant (44.8%) while the Dipteran larvae (0.20%) were the least abundant. All the classes of zooplankton occurred in all the stations monitored except the dipteran larvae which were not found in two stations. However, spatial distribution of species varied significantly (p < 0.05) within each class. In contrast, all zooplankton classes occurred in the two all seasons, but seasonal species distribution also differed significantly (p < 0.05).

3 citations

Journal Article
TL;DR: 5 groups of zooplankton were investigated namely copepod, rotifer, cladocera, ostracoda and crustacean larvae, and it was demonstrated that their prevalence percentages in the culture systems were 53%, 37%, 7%, 1.3% and 1.7% respectively.
Abstract: Physico-chemical parameters and abundance of zooplankton in Bagmati River Near Pashupatinath Temple, Kathmandu, Nepal were studied. In the present investigated 5 groups of zooplankton were namely copepod, rotifer, cladocera, ostracoda and crustacean larvae. It was demonstrated that their prevalence percentages (%) in the culture systems were 53%, 37%, 7%, 1.3% and 1.7% respectively. Zooplankton was dominated by copepods which showed more or less two peaks in August (949 individuals/L) and in October (867 individuals/L). Rotifer and copepod were about perennial while one genus Cypris of ostracod was found only in August. Three genera of copepod namely Diaptomus, Cyclops and Mesocyclops were identified in the study area of which Diaptomus and Mesocyclops were more or less dominant while four genus of which Brachionus and Filinia under rotifer and Daphnia and Diaphanosoma under cladocera were also found during the study period. The physico-chemical parameters and the zooplankton abundance showed some interrelationships which are helpful to understand the seasonal and spatial variation of zooplankton population.

2 citations