Extensive Chaetoceros curvisetus bloom in relation to water quality in Port Blair Bay, Andaman Islands

  • Mehmuna Begum*
  • , Biraja Kumar Sahu
  • , Apurba Kumar Das
  • , Nambali Valsalan Vinithkumar
  • , Ramalingam Kirubagaran
  • *Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

Blooming of diatom species Chaetoceros curvisetus (Cleve, 1889) was observed in Junglighat Bay and Haddo Harbour of Port Blair Bay of Andaman and Nicobar Islands during June 2010. Physico-chemical parameters, nutrient concentrations and phytoplankton composition data collected from five stations during 2010 were classified as bloom area (BA) and non-bloom area (NBA) and compared. Elevated values of dissolved oxygen were recorded in the BA, and it significantly varied (p < 0.01) from NBA. Among the nutrient parameters studied, nitrate concentration indicated significant variation in BA and NBA (p < 0.01). Phosphate and ammonia concentrations reduced to below detection level (BDL) in the BA and NBA, indicating its utilization. In Junglighat Bay, the C. curvisetus species constituted 93.4 and 69.2 % composition of total phytoplankton population during day 1 and day 2, respectively. The bloom forming stations separated out from the non-bloom forming station in non-parametric multidimensional scaling (nMDS) ordinations; cluster analysis powered by SIMPROF test also grouped the stations as BA and NBA.

Original languageEnglish
Article number226
Pages (from-to)1-14
Number of pages14
JournalEnvironmental Monitoring and Assessment
Volume187
Issue number5
DOIs
StatePublished - 1 May 2015
Externally publishedYes

Bibliographical note

Publisher Copyright:
© 2015, Springer International Publishing Switzerland.

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 6 - Clean Water and Sanitation
    SDG 6 Clean Water and Sanitation
  2. SDG 14 - Life Below Water
    SDG 14 Life Below Water

Keywords

  • Andaman Sea
  • Bloom
  • Chaetoceros curvisetus
  • Multivariate statistics
  • Phytoplankton
  • Water quality

ASJC Scopus subject areas

  • General Environmental Science
  • Pollution
  • Management, Monitoring, Policy and Law

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