Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands
The bloom-forming dinoflagellate, Protoperidinium divergens has been linked with coastal eutrophication in tropical and subtropical regions. Moderate to intense harmful algal bloom of dinoflagellates Protoperidinium divergens (33,500 cells mL-1) was observed during June 2012 in Junglighat Bay of Po...
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| Format: | Article |
| Language: | English |
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Environmental Research Institute, Chulalongkorn University
2014-10-01
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| Series: | Applied Environmental Research |
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| Online Access: | https://ph01.tci-thaijo.org/index.php/aer/article/view/22348 |
| _version_ | 1797310784883130368 |
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| author | Karthik Raji Gadi Padmavati |
| author_facet | Karthik Raji Gadi Padmavati |
| author_sort | Karthik Raji |
| collection | DOAJ |
| description |
The bloom-forming dinoflagellate, Protoperidinium divergens has been linked with coastal eutrophication in tropical and subtropical regions. Moderate to intense harmful algal bloom of dinoflagellates Protoperidinium divergens (33,500 cells mL-1) was observed during June 2012 in Junglighat Bay of Port Blair in South Andaman. Bloom of Protoperidinium divergens was observed for four days and declined afterwards due to heavy rainfall with low seawater temperature of 24 to 26°C. A total of 63 species and 33 genera were identified. In the present investigation, the following species of phytoplankton and zooplankton were found to be common; phytoplankton such as Amphora sp., Bacteriastrum sp., Chaetoceros sp., Coscinodiscus sp., Rhizosolenia sp., Gonyaulax sp., Protoperidinium sp., Pyrophacus sp. and zooplankton such as Paracalanus sp., Euterpina sp., fish eggs, Copepod nauplii, Codonella sp. and Tintinnopsis sp. Hydrobiological parameters analyzed during and post-bloom showed dissolved oxygen in the range of 2.23 – 4.46 mg L-1. Nutrients such as nitrate varied from 0.37-1.118 µmol L-1, nitrite from 0.37-1.118 µmol L-1, phosphate (0.10-0.289 µmol L-1) and silicate (6.22-9.333 µmol L-1). Anthropogenic activities increased eutrophication in Junglighat Bay and led to nutrient enrichment in the water column, although precipitation could also have favoured the outbreak of these dinoflagellates.
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| first_indexed | 2024-03-08T01:49:00Z |
| format | Article |
| id | doaj.art-6ba0435bd0b94ee58562b27025bcda4c |
| institution | Directory Open Access Journal |
| issn | 2287-075X |
| language | English |
| last_indexed | 2024-03-08T01:49:00Z |
| publishDate | 2014-10-01 |
| publisher | Environmental Research Institute, Chulalongkorn University |
| record_format | Article |
| series | Applied Environmental Research |
| spelling | doaj.art-6ba0435bd0b94ee58562b27025bcda4c2024-02-14T10:51:46ZengEnvironmental Research Institute, Chulalongkorn UniversityApplied Environmental Research2287-075X2014-10-01364Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman IslandsKarthik Raji0Gadi Padmavati1School of Life Sciences, Pondicherry University, Andaman and Nicobar Islands, IndiaSchool of Life Sciences, Pondicherry University, Andaman and Nicobar Islands, India The bloom-forming dinoflagellate, Protoperidinium divergens has been linked with coastal eutrophication in tropical and subtropical regions. Moderate to intense harmful algal bloom of dinoflagellates Protoperidinium divergens (33,500 cells mL-1) was observed during June 2012 in Junglighat Bay of Port Blair in South Andaman. Bloom of Protoperidinium divergens was observed for four days and declined afterwards due to heavy rainfall with low seawater temperature of 24 to 26°C. A total of 63 species and 33 genera were identified. In the present investigation, the following species of phytoplankton and zooplankton were found to be common; phytoplankton such as Amphora sp., Bacteriastrum sp., Chaetoceros sp., Coscinodiscus sp., Rhizosolenia sp., Gonyaulax sp., Protoperidinium sp., Pyrophacus sp. and zooplankton such as Paracalanus sp., Euterpina sp., fish eggs, Copepod nauplii, Codonella sp. and Tintinnopsis sp. Hydrobiological parameters analyzed during and post-bloom showed dissolved oxygen in the range of 2.23 – 4.46 mg L-1. Nutrients such as nitrate varied from 0.37-1.118 µmol L-1, nitrite from 0.37-1.118 µmol L-1, phosphate (0.10-0.289 µmol L-1) and silicate (6.22-9.333 µmol L-1). Anthropogenic activities increased eutrophication in Junglighat Bay and led to nutrient enrichment in the water column, although precipitation could also have favoured the outbreak of these dinoflagellates. https://ph01.tci-thaijo.org/index.php/aer/article/view/22348South AndamanAlgal bloomDinoflagellateProtoperidinium divergens |
| spellingShingle | Karthik Raji Gadi Padmavati Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands Applied Environmental Research South Andaman Algal bloom Dinoflagellate Protoperidinium divergens |
| title | Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands |
| title_full | Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands |
| title_fullStr | Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands |
| title_full_unstemmed | Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands |
| title_short | Dinoflagellate Bloom Produced by Protoperidinium divergens Response to Ecological Parameters and Anthropogenic Influences in the Junglighat Bay of South Andaman Islands |
| title_sort | dinoflagellate bloom produced by protoperidinium divergens response to ecological parameters and anthropogenic influences in the junglighat bay of south andaman islands |
| topic | South Andaman Algal bloom Dinoflagellate Protoperidinium divergens |
| url | https://ph01.tci-thaijo.org/index.php/aer/article/view/22348 |
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