Seasonal distribution of phytoplankton community in a subtropical estuary of the south-eastern coast of Bangladesh

Iqbal, M Mehedi; Billah, Masum; Haider, Md. Nurul; Islam, Md. Shafiqul; Payel, H. Rajib; Bhuiyan, Md. Khurshid Alam; Dawood, Mahmoud A.O.

doi:10.1080/21658005.2017.1387728

Cited by 19 publications

(4 citation statements)

References 27 publications

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“…Phytoplankton community and composition at different stations and seasons exhibited different trends may be due to variations in environmental parameters (Shah et al., 2008). Maximum number of phytoplankton genera (30) recorded during monsoon and minimum number of genera (25) recorded during winter probably due to environmental parameters, that is temperature, pH, DO and nutrients as distributions of phytoplankton are primarily driven by environmental parameters (Al et al., 2019; Gogoi et al., 2019; Iqbal et al., 2017).…”

Section: Discussionmentioning

confidence: 99%

Unravelling the diversity and assemblage of phytoplankton in homestead ponds of central coastal belt, Bangladesh

et al. 2020

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Homestead ponds may offer an ideal opportunity in contribution to household income, fish consumption through fish culture. Phytoplankton plays a key indicator in pond productivity. However, the phytoplankton communities in the homestead ponds are nearly undetermined in Bangladesh. This study summarizes the phytoplankton diversity, assemblage and ecological parameters of the homestead ponds in central coastal belt, Bangladesh, based on two seasons. The results revealed that significant differences (p < .05) were found in pH, DO, conductivity, TDS, nitrates, phosphates and sulphates except temperature in monsoon, and transparency in both seasons. A total of 34 phytoplankton genera representatives of five major groups were recorded such as Euglenophyceae (41.5%), Chlorophyceae (30.5%), Cyanophyceae (13%), Dinophyceae (10%) and Bacillariophyceae (5%). A significant difference (p < .05) in phytoplankton abundance was found in both seasons with the highest mean of 186.13 ± 129.34 × 10 4 cells L −1 in monsoon and the lowest mean of 144.40 ± 107.26 × 10 4 cells L −1 during winter. The diversity (H'), evenness (J'), richness (d) and dominance (D) ranged from 1.62 to 2.47, 0.52 to 0.97, 0.37 to 1.15 and 0.10 to 0.28 respectively. Based on SIMPER, the most dominant (>10%) genera for dissimilation within stations and seasons were Euglena spp., Phacus spp., Chlorella spp., Strombomonas spp. and Peridinium spp. ANOSIM results stated that 12 genera of phytoplankton were significant contributors based on average dissimilarity. Pearson's correlation coefficient and canonical correspondence analysis (CCA) revealed that phytoplankton abundance, diversity and community were mainly governed by transparency, dissolved oxygen and nitrates.

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Section: Discussionmentioning

confidence: 99%

Unravelling the diversity and assemblage of phytoplankton in homestead ponds of central coastal belt, Bangladesh

et al. 2020

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“…So far, 67 species of zooplankton genera have been recorded from nearby areas of estuaries (Table 6) which is relatively less than a single estuary of India, i.e., Kaduviyar estuary (Vengadesh et al, 2009). (Sharif, 2002;Aziz et al, 2012;Rahman et al, 2013;Mehedi Iqbal et al, 2017;, which directly increase the zooplankton diversity at these estuarine zones locally (Haque et al, 2015). Nutrient-rich estuaries amplify phytoplankton production, leading to higher growth of zooplankton (Iqbal et al, 2014).…”

Section: Zooplankton Communitiesmentioning

confidence: 99%

Ecohydrological features and biodiversity status of estuaries in Bengal delta, Bangladesh: A comprehensive review

Rakib

Hossain

Islam

et al. 2022

Front. Environ. Sci.

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An estuary represents a transition point between freshwater and saltwater and has a complex but productive environment due to a strong interplay between geological, physical, chemical, and biological processes. In Bangladesh, the ecological factors and biodiversity of different estuaries have been investigated for the last 35 years. However, the data is widely scattered, not easily accessible, unpublished, and/or in the form of grey literature. In this study, an attempt has been made to aggregate information available on the geo-environmental and biodiversity status of estuaries for their sustainable management. The biological and environmental data of 21 estuaries along the Bangladesh coast were collected from previously published literature and analyzed. The analyses revealed that the estuarine environment of Bangladesh is very dynamic and diverse like other tropical estuaries. The physico-chemical and geological parameters in estuaries significantly varied due to monsoon patterns, nutrient influx, salinity intrusion, riverine discharge, siltation, and human interventions in estuaries. Among the key environmental variables, such as salinity (3.7–30 ppt), pH (7.04–8), dissolved oxygen (3.30–13.63 mg/L), and water temperature (21–30°C) varied. Over 830 faunal and floral species of 273 genera were recorded from the estuarine environment, including 208 fishes, 87 species of phytoplankton, and 67 species of zooplankton in this region. This study suggests the development of an appropriate policy to protect valuable, productive, and diverse ecosystems, especially for erosion control, pollution abatement, and habitat destruction, particularly in the mangrove forests and their associated habitats of Bangladesh.

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“…Os estuários em todo o mundo tornaram-se substancialmente influenciados por atividades humanas, incluindo mudanças no uso da terra, eutrofização e derramamentos de óleo, que afetam a composição e a diversidade dos organismos através de fatores abióticos e bióticos (Wetzel, 2001). Estudos têm apontado que muitos desses fatores têm influenciado na composição e abundância do fitoplâncton em estuários em todo o mundo (Saifullah et al, 2014;Mehedi Iqbal et al, 2017). O fitoplâncton é um conjunto de organismos unicelulares e microscópicos com rápida taxa de crescimento e serve como fonte de energia para organismos consumidores de níveis tróficos superiores da teia alimentar (Saifullah et al, 2014).…”

Section: Introductionunclassified

DIATOMÁCEAS CÊNTRICAS (Coscinodiscophyceae e Mediophyceae) PLANCTÔNICAS EM DOIS ESTUÁRIOS TROPICAIS BRASILEIROS: LEVANTAMENTO FLORÍSTICO E NOVOS REGISTROS

Moura

Diniz

Amorim

et al. 2022

ACMAR

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Os estuários são ecossistemas altamente produtivos e dinâmicos, sendo o fitoplâncton o principal produtor primário, e as diatomáceas cêntricas são o grupo mais abundante observado no fitoplâncton marinho e estuarino. Nesse contexto, o objetivo deste estudo foi realizar o levantamento taxonômico das diatomáceas cêntricas planctônicas(Coscinodiscophyceae e Mediophyceae) de dois estuários tropicais localizados no Nordeste do Brasil. O estudo foi realizado antes do maior impacto de derramamento de óleo ocorrido no Brasil em 2019. Trinta e seis táxons foram identificados. Mediophyceae foi a classe mais representativa, com 24 espécies. Coscinodiscus foi o gênero com maior número de espécies identificadas, seguido de Chaetoceros e Thalassiosira. A espécie Chaetoceros filiferus Karsten foi reportada pela primeira vez para o Brasil, enquanto Paralia fenestrata (Sawai & Nagumo) e Shionodiscus endoseriatus (Hasle & Fryxell) Alverson consistem em novos registros para o Nordeste do Brasil e Thalassiosira lineata Jousé para o estado de Pernambuco. Descrições, ilustrações e comentários sobre as variações morfológicas e métricas dos táxons foram apresentados. Os resultados evidenciam a importância de estudos florísticos para oconhecimento da flora de diatomáceas de ambientes marinhos tropicais, além de servir como um estudo de base para trabalhos futuros nos estuários estudados. Palavras-chave: Brasil, diatomáceas marinhas, fitoplâncton, microscopia eletrônica de varredura, taxonomia

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Seasonal distribution of phytoplankton community in a subtropical estuary of the south-eastern coast of Bangladesh

Cited by 19 publications

References 27 publications

Unravelling the diversity and assemblage of phytoplankton in homestead ponds of central coastal belt, Bangladesh

Unravelling the diversity and assemblage of phytoplankton in homestead ponds of central coastal belt, Bangladesh

Ecohydrological features and biodiversity status of estuaries in Bengal delta, Bangladesh: A comprehensive review

DIATOMÁCEAS CÊNTRICAS (Coscinodiscophyceae e Mediophyceae) PLANCTÔNICAS EM DOIS ESTUÁRIOS TROPICAIS BRASILEIROS: LEVANTAMENTO FLORÍSTICO E NOVOS REGISTROS

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