1. Studies on phytoplankton pigments in porto novo waters (India). II. Backwater
- Author
-
K. Krishnamurthy and V. Sundararaj
- Subjects
Chlorophyll b ,chemistry.chemical_classification ,Chlorophyll a ,food.ingredient ,Chlorophyll c ,Phytoplankton pigments ,Aquatic Science ,Biology ,chemistry.chemical_compound ,food ,chemistry ,Botany ,Phytoplankton ,Hemidiscus ,Coscinodiscus ,Carotenoid ,Ecology, Evolution, Behavior and Systematics - Abstract
The annual variations of phytoplankton pigments were studied from January to December, 1971 at four stations in the backwater area (Porto Novo, India). At these stations, chlorophyll a varied from 2.91–65.56 μg/1; chlorophyll b from 0–1.90 μg/l; chlorophyll c from 0–38.60 μg/1; plant carotenoids from 0.30–22.34 MSPU/m 3 and phaeopigments from 0–31.51 μg/l. The main (or primary) maximum of chlorophyll a appeared during June at Stations 3–5 and at Station 6, it was during May. Stations 3 and 4 had secondary chlorphyll a maxima during September and at Stations 5 and 6 during August. In general, all the stations showed an increasing trend of chlorphyll a values before the main peak. The chlorophyll a maximum was mainly due to the presence of phytoplankton species belonging to the genera such as Noctiluca, Coscinodiscus, Thalassiothrix, Biddulphia, Hemidiscus, Melosira and Rhizosolenia . Amongst all the backwater stations, Station 5 had the highest chlorophyll a (65.56 μg/1) and the lowest chlorophyll a was recorded at Station 3. Chlorophyll a concentration was normally affected by rainfall.
- Published
- 1974