Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Seasonal variation of phytoplankton community in Gopalpur Creek: a tropical tidal backwater ecosystem, East Coast of India

Baliarsingh, SK and Sahu, Biraja and Srichandan, S and Sahu, KC and Lotliker, AA and Kumar, TS (2013) Seasonal variation of phytoplankton community in Gopalpur Creek: a tropical tidal backwater ecosystem, East Coast of India. Indian Journal of Geo-Marine Sciences (IJMS), 42 (5). pp. 622-634.

[img]
Preview
PDF
Sesonal variation_IJMS.pdf - Published Version

Download (238kB) | Preview

Abstract

Present study consists of phytoplankton community of Gopalpur creek in pre-monsoon, monsoon and post-monsoon season There was a significant seasonal variation in water temperature (p < 0.01). Salinity and pH varied significantly (p < 0.05) among the stations. Chlorophyll a and phytoplankton density found to vary significantly (p < 0.01) among seasons rather than the stations. A total of 99 phytoplankton species were identified. Diatoms formed 77, dinoflagellates 14, green algae five, blue green algae two and cocolithophore one species. Phytoplankton species composition was found dissimilar in the three seasons. In pre-monsoon Noctiluca scintillans, Thalassiothrix longissima, Odontella sinensis, Thalassionema nitzschioides, Coscinodiscus gigas, Rhizosolenia alata formed the dominant species. In monsoon, Rhizosolenia alata, Pleurosigma elongatum, Melosira sulcata, Amphora coastatum, Rhizosolenia setigera dominated the phytoplankton population. In post-monsoon Odontella sinensis, Rhizosolenia setigera, Coscinodiscus gigas, Thalassiothrix longissima, Noctiluca scintillans, Oscillatoria spp. dominated. Univariate diversity indices showed maximum diversity during post-monsoon. Pielou’s evenness (J’) and Simpson’s dominance have shown little variation among the seasons

Item Type: Article
Additional Information: Copyright of this article belongs to CSIR-NISCAIR.
Uncontrolled Keywords: Phytoplankton;Seasonal;Gopalpur creek;East coast of India
Subjects: Oceanography > oceanography
Oceanography > phytoplankton concentration
Depositing User: INCOIS Library
Date Deposited: 16 Dec 2013 11:42
Last Modified: 16 Dec 2013 11:42
URI: http://moeseprints.incois.gov.in/id/eprint/549

Actions (login required)

View Item View Item