Roshan Bharatbhai Bhagat

Roshan Bharatbhai Bhagat
Gujarat Ecological Education and Research Foundation (GEER) | GEER Foundation · Department of forest

Master of Enviornment science


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Additional affiliations
April 2011 - present
Gujarat Ecological Education and Research Foundation (GEER)
  • JRF
  • i have expertise in Plankton study
May 2008 - April 2010
Field of study
  • Environment science


Publications (5)
Full-text available
Phytoplanktons are the primary producer of marine ecosystems and contribute to the primary productivity of aquatic environment. The present study was carried out at 16 different locations of Gujarat coast to ascertain the diversity & distribution of marine phytoplankton. During the study, a total 122 species of phytoplankton belonging to five diffe...
Full-text available
Phytoplanktons are the primary producer of marine ecosystems and contribute towards the primary productivity of aquatic environment. The present study was carried out at three selected sites of Gulf of Kachchh (GoK) viz; Pirotan, Sachana and Roziport. During the study, a total of 106 species of phytoplankton were recorded, of which the highest spec...
Full-text available
The monitoring of coastal water quality was done on seasonal basis in pre-monsoon, monsoon and post-monsoon for three years duration (November 2011 to December 2014). Data obtained were applied to Arc-GIS software 10.3 for the preparation of thematic maps to evaluate the spatial and temporal variation in water quality parameters. Cluster analysis s...


Questions (32)
In my study, i am studying coastal freshwater man made wetland which has abundance of Cocconeis sp. plankton, though it is difficult to identify species. do cocconeis genera had some ecological significance ?
Estuary environment Diatom
Hi Friend and colleague,
Anybody is working in field of algae can respond to me. I had query about Pamer index. 1969 and Shannon index .
Which index is better for studying water pollution in relation to algae
Because some of research article showed use of
Staub et. al. (1970) : shannon diversity is based on diversity index D
3.0 - 4.5 : Slight pollution
2.0 - 3.0 : Light pollution
1.0 - 2.0 : Moderate pollution
0.0 - 1.0 : Heavy pollution
Wilhm and Dorris (1968) proposed the following relationship between diversity index (D) and pollution status. D Condition
> 3 Clean water
1 - 3 Moderately polluted
< 1 Heavily polluted
Trivedi (1980 and 1981) on correlation of diversity index (D) and the degree of pollution as follows : Condition
> 4.0 : Clean water
3.0 - 4.0 : Very light pollution
2.0 - 3.0 : Moderate pollution
< 2.0 : Heavy pollution
Respected sir/Madam expert working in field of algae and Diatom, I found following article on,
T. V. Ramachandra Malvikaa Solanki. 2007. "Ecological assessment of Lentic water bodies of Banglore. "
This is the formula for that, I found it, these is easy method for counting density of plankton. Can any body had reference of it.
i am using 25 (L) of water to collected in 50 ml bottler, and tanking 0.1 ml for sample for analysis on normal slide and cover slip.
Total plankton count per litre = A * (1/L) * (n/v) Where, A = number of organisms per drop             L = volume of original sample (l)             n = total volume of concentrated sample (ml)             v = volume of one drop (ml)
Lake sediments high in silt and organic material
These is method is for collecting diatom form sediment. Can any body tell me how much quantity gram (g) of soil; shohd be used in these sample,
Add 25 mL of 30% hydrogen peroxide (H2O2) to a beaker containing the sample. Boil for 1 hour on a hot plate. Add 30 mL concentrated nitric acid (HNO3).
Reaction occurs quickly; submerge beaker in cold water to halt the reaction. Fill the beaker with distilled water and let settle for 4-6 hours. Decant the supernatant (leave 2 cm of liquid in bottom of beaker) and refill the beaker with distilled water. Repeat the settling and distilled water rinsing and settling until all by-products are removed (5-6 times).
What is the reason of abundance of skeletonema costatum and coscinodiscus abudacne ?


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Projects (2)
Archived project