Composition and Diversity of Phytoplankton from Mangrove Estuaries in Sarawak, 
 Malaysia

Saifullah, Asm; Kamal, Abu Hena Mustafa; Idris, Mohd Hanafi; Rajaee, Amy Halimah; Ismail, Johan

doi:10.3923/jbs.2014.361.369

Cited by 30 publications

(17 citation statements)

References 4 publications

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“…Currently, the riverine DIN input was mild, which did not markedly change the stoichiometry in coastal water. The dominant phytoplankton species was diatom (Saifullah et al, 2014) and harmful algae blooms were not recorded in Sarawak coasts. In addition, the fishery industry is flourished and plays an important role in the local economy (Ikhwanuddin et al, 2011;Hamli et al, 2012).…”

Section: Din Export Fluxes and Fate In The Coastal Oceanmentioning

confidence: 92%

Dissolved inorganic nitrogen in a tropical estuary at Malaysia: transport and transformation

Jiang¹,

Müller²,

Jin³

et al. 2019

Preprint

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Abstract. Dissolved inorganic nitrogen (DIN), including nitrate, nitrite and ammonium, frequently acts as the limitation for primary productivity. Our study focused on the transport and transformation of dissolved inorganic nitrogen in a tropical estuary, i.e. Rajang river estuary, in Borneo, Malaysia. Three cruises were conducted in August 2016, February&#8211;March and September 2017, covering both dry and wet seasons. Before entering the coastal delta, decomposition of the terrestrial organic matter and the subsequent soil leaching was assumed to be the main source of DIN in the river water. In the estuary, decomposition of dissolved organic nitrogen was an additional DIN source, which markedly increased DIN concentrations in August 2016 (dry season). In the wet season (February 2017), ammonium concentration showed a relatively conservative distribution during the mixing and nitrate addition was weak. In September 2017 (dry season), La Ni&#241;a induced high precipitation and discharge rates, decreased reaction intensities of ammonification and nitrification and hence the distribution of DIN species in the estuary water was similar with the trend found in the wet season. The magnitude of riverine DIN flux varied between 77.2 and 101.5&#8201;ton&#8201;N&#8201;d-1, which might be an important support for the coastal primary productivity.

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Section: Din Export Fluxes and Fate In The Coastal Oceanmentioning

confidence: 92%

Dissolved inorganic nitrogen in a tropical estuary at Malaysia: transport and transformation

Jiang¹,

Müller²,

Jin³

et al. 2019

Preprint

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show abstract

“…In Malaysia, the distribution of this genus has been listed along with other diatoms during field surveys and studies (Cleve, 1901;Nather-Khan, 1990;Shamsudin, 1990;Aishah and Nooraida, 1994;Aishah, 2005;Fareha et al, 2011;Saifullah et al, 2014). Taxonomical identification of the diatom Nitzschia has been highly dependent on discernable valve characters under light microscopy and the molecular data on the existing Nitzschia species was lacking.…”

Section: Introductionmentioning

confidence: 99%

Morphology and molecular phylogeny of the marine diatom Nitzschia dentatum sp. nov. and N. johorensis sp. nov. (Bacillariophyceae) from Malaysia

Usup

2017

Bangladesh J. Plant Taxon

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The marine diatom Nitzschia dentatum sp. nov. isolated from seawater samples of Kudat and N. johorensis sp. nov. isolated from beach sand samples of Sibu Island, Malaysia, have been described in this paper. Morphological identification, molecular phylogeny and toxin analyses were executed on the pure non-axenic algal cultures designated as KD89 and PS8, respectively. The main distinguishing feature of N. dentatum sp. nov. compared to other species is the jaggedcingulum structure which is only unique to this species. Meanwhile, N. johorensis sp. nov.is strongly characterized by the 'hantzschioid'and 'nitzschioid' symmetry dimorphisms; a common diagnostic feature but rarely described in other Nitzschia species. Identification of both strains was made based on the frustule diagnostic features and verified using the partial large ribosomal subunit DNA sequences. The results have confirmed that these two speciesare independent entities and novel species that have not been documented elsewhere. A notable finding from the Maximum Likelihood (ML), Maximum Parsimony (MP) and Bayesian Index (BI) analyses have also revealed that Nitzschia species that have indentation in the middle of valves have been consistently grouped as same clade with high bootstrap values. The extracts of both species did not show detectable amount of domoicacid and have therefore, been classified as non-toxic. This discovery contributes to the documentation of Nitzschia species worldwide.

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“…community structure, primary production and hydrographic parameters (Roy et al, 2010;Thomas et al, 2016). Phytoplankton is the base trophic level in the marine food web and remains as the major source of energy flow to higher trophic levels in coastal ecosystems (Tiwari and Chauhan, 2006;Saifullah et al, 2014).…”

Section: Issn: 2319-7706 Volume 7 Number 06 (2018)mentioning

confidence: 99%

Temporal Variations in Phytoplankton Assemblages at Dol Net Fishing Grounds of Major Tidal Creeks of Maharashtra, India

Raveendran¹,

Dineshbabu²,

Jaiswar³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Composition and Diversity of Phytoplankton from Mangrove Estuaries in Sarawak, Malaysia

Cited by 30 publications

References 4 publications

Dissolved inorganic nitrogen in a tropical estuary at Malaysia: transport and transformation

Dissolved inorganic nitrogen in a tropical estuary at Malaysia: transport and transformation

Morphology and molecular phylogeny of the marine diatom <i>Nitzschia dentatum</i> sp. nov. and <i>N. johorensis</i> sp. nov. (Bacillariophyceae) from Malaysia

Temporal Variations in Phytoplankton Assemblages at Dol Net Fishing Grounds of Major Tidal Creeks of Maharashtra, India

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