Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts
The present work addressed the study an episode of red waters of great extent, which was observed off the Oum Er Rbia estuary in spring 2019. The responsible species was Prorocentrum micans . The study was carried out on three stations with different characteristics, distributed in the estuary upstr...
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Polish Society of Ecological Engineering (PTIE)
2023
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ftdoajarticles:oai:doaj.org/article:c733395ae521492585a3427f995e2016 2023-07-30T04:05:30+02:00 Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts Rachida Bengriche El Mostafa Bouchafra Jamila Chaouite Mohammed Moncef 2023-08-01T00:00:00Z https://doi.org/10.12912/27197050/168092 https://doaj.org/article/c733395ae521492585a3427f995e2016 EN eng Polish Society of Ecological Engineering (PTIE) http://www.ecoeet.com/Efflorescence-of-the-Potentially-Harmful-Dinoflagellate-Prorocentrum-micans-in-the,168092,0,2.html https://doaj.org/toc/2719-7050 2719-7050 doi:10.12912/27197050/168092 https://doaj.org/article/c733395ae521492585a3427f995e2016 Ecological Engineering & Environmental Technology, Vol 24, Iss 6, Pp 250-256 (2023) efflorescence prorocentrum micans dinoflagellates oum er rbia estuary Ecology QH540-549.5 article 2023 ftdoajarticles https://doi.org/10.12912/27197050/168092 2023-07-16T00:38:02Z The present work addressed the study an episode of red waters of great extent, which was observed off the Oum Er Rbia estuary in spring 2019. The responsible species was Prorocentrum micans . The study was carried out on three stations with different characteristics, distributed in the estuary upstream and downstream of an urban wastewater discharge. The cell densities observed were maximum in March 2019. Some environmental parameters (temperature, salinity, dissolved oxygen, chlorophyll (a) and pheopigments) were simultaneously recorded. The P. micans densities increased from downstream to upstream with cell concentrations of 1.03×10^5 Cell/l in S3, 9.1×10^6 Cell/l in S2 and 14.11×10^7 Cell/l in S1. The contribution of P. micans to the total dinoflagellate density was higher and reached 99.54% in station S1. These blooms would be associated with high concentrations of chlorophyll (a) and pheopigments, which equaled 40 µg/l and 909 µg/l, respectively, and dissolved oxygen supersaturations (17.05 mg/l). This phenomenon also corresponded to a marked decrease in salinity. According to the application of the Kruskal-Wallis test, the difference was found to be significant between the three stations (p = 0.0034). In addition, densities were higher in surface water than in bottom water at all three stations. However, this difference did not appear to be statistically significant (p > 0.05). Article in Journal/Newspaper North Atlantic Directory of Open Access Journals: DOAJ Articles Ecological Engineering & Environmental Technology 24 6 250 256 |
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op_collection_id |
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English |
topic |
efflorescence prorocentrum micans dinoflagellates oum er rbia estuary Ecology QH540-549.5 |
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efflorescence prorocentrum micans dinoflagellates oum er rbia estuary Ecology QH540-549.5 Rachida Bengriche El Mostafa Bouchafra Jamila Chaouite Mohammed Moncef Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
topic_facet |
efflorescence prorocentrum micans dinoflagellates oum er rbia estuary Ecology QH540-549.5 |
description |
The present work addressed the study an episode of red waters of great extent, which was observed off the Oum Er Rbia estuary in spring 2019. The responsible species was Prorocentrum micans . The study was carried out on three stations with different characteristics, distributed in the estuary upstream and downstream of an urban wastewater discharge. The cell densities observed were maximum in March 2019. Some environmental parameters (temperature, salinity, dissolved oxygen, chlorophyll (a) and pheopigments) were simultaneously recorded. The P. micans densities increased from downstream to upstream with cell concentrations of 1.03×10^5 Cell/l in S3, 9.1×10^6 Cell/l in S2 and 14.11×10^7 Cell/l in S1. The contribution of P. micans to the total dinoflagellate density was higher and reached 99.54% in station S1. These blooms would be associated with high concentrations of chlorophyll (a) and pheopigments, which equaled 40 µg/l and 909 µg/l, respectively, and dissolved oxygen supersaturations (17.05 mg/l). This phenomenon also corresponded to a marked decrease in salinity. According to the application of the Kruskal-Wallis test, the difference was found to be significant between the three stations (p = 0.0034). In addition, densities were higher in surface water than in bottom water at all three stations. However, this difference did not appear to be statistically significant (p > 0.05). |
format |
Article in Journal/Newspaper |
author |
Rachida Bengriche El Mostafa Bouchafra Jamila Chaouite Mohammed Moncef |
author_facet |
Rachida Bengriche El Mostafa Bouchafra Jamila Chaouite Mohammed Moncef |
author_sort |
Rachida Bengriche |
title |
Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
title_short |
Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
title_full |
Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
title_fullStr |
Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
title_full_unstemmed |
Efflorescence of the Potentially Harmful Dinoflagellate Prorocentrum micans in the Oum Er Rbia Estuary – North Atlantic Moroccan Coasts |
title_sort |
efflorescence of the potentially harmful dinoflagellate prorocentrum micans in the oum er rbia estuary – north atlantic moroccan coasts |
publisher |
Polish Society of Ecological Engineering (PTIE) |
publishDate |
2023 |
url |
https://doi.org/10.12912/27197050/168092 https://doaj.org/article/c733395ae521492585a3427f995e2016 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_source |
Ecological Engineering & Environmental Technology, Vol 24, Iss 6, Pp 250-256 (2023) |
op_relation |
http://www.ecoeet.com/Efflorescence-of-the-Potentially-Harmful-Dinoflagellate-Prorocentrum-micans-in-the,168092,0,2.html https://doaj.org/toc/2719-7050 2719-7050 doi:10.12912/27197050/168092 https://doaj.org/article/c733395ae521492585a3427f995e2016 |
op_doi |
https://doi.org/10.12912/27197050/168092 |
container_title |
Ecological Engineering & Environmental Technology |
container_volume |
24 |
container_issue |
6 |
container_start_page |
250 |
op_container_end_page |
256 |
_version_ |
1772817464939249664 |