Growth rates of dinoflagellates along the Karachi coast assessed by the size fractionation method

Munir, Sonia; Siddiqui, Pirzada Jamal Ahmed; Naz, Tahira; Burhan, Zaib Un-nisa; Morton, Steve L.

doi:10.1515/ohs-2015-0031

Cited by 2 publications

(1 citation statement)

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“…A number of potential blooms forming species have been reported from coastal waters of Pakistan in the northern Arabian Sea (Saifullah and Chaghtai, 1990;Baig et al, 2006). In general, reports on phytoplankton from Pakistan are scarce and only a few studies are (Latif et al, 2013;Khokhar et al, 2018Khokhar et al, , 2020 and the remaining contributions are restricted to taxonomy and coastal waters (Munir et al, 2011(Munir et al, , 2013(Munir et al, , 2015Mansoor and Saifullah, 1995). The few reports on dinoflagellates were available on growth rate and seasonal abundance (Munir et al, 2016;Khokhar et al, 2018).…”

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confidence: 99%

Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea

et al. 2022

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The present study reports on seasonal and spatial variations in diversity, distribution and abundance of dinoflegellates and indicates the presence of HAB species in Pakistan waters. A total of 179 taxa, recorded in this study from offshore and near-shore waters, belong to 41 genera in 26 families and 10 orders. The high species count (149 species) was recorded from Manora Island offshore station (MI-1) and 105 spp, 109 spp and 115 spp were encountered from the Mubarak village offshore station (MV-1), Manora near shore station (MI-2) and Mubarak Village near-shore station (MV-2) respectively. Tripos furca was the dominant and frequently occurring species (> 1 x103 to > 25 x103 cells L-1 from coastal and >1x 105 cells L-l from near-shore stations) in addition to less abundant Alexandrium catenella, Alexandrium sp., Alexandrium minutum, and Prorocentrum micans (>103 to 25x 103cells/L). Another 44 species occurred in relatively low numbers (<103 cell L-l). Seventy species were found throughout the study period at all four stations. High number of species in three genera (Tripos (38), Protoperidinium (34) and Prorocentrum (20) was recorded. Potently toxic (16 genera 43 species) and HAB related (19 genera and 30 species) dinoflagellate taxa were also recorded. The percent contribution of dinoflagellates in total phytoplankton population generally remained below 20% except for a few instances. Manora Island stations had comparatively higher Shannon index and equitability and slightly lower dominance index. The PCA plot showed strong positive correlation among chlorophyll-a concentration, dissolved oxygen, total number of phytoplankton and dinoflagellates.

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Section: Introductionmentioning

confidence: 99%

Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea

et al. 2022

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A review of karenia mikimotoi: Bloom events, physiology, toxicity and toxic mechanism

Tian

et al. 2019

Harmful Algae

118

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Growth rates of dinoflagellates along the Karachi coast assessed by the size fractionation method

Abstract: The in situ growth rates of dinoflagellates along the Karachi coast off Pakistan was studied by the size fractionated method during winter (February 2006) and summer (May 2007). The growth rate per day ranged from -2.87 to 2.3 d

Cited by 2 publications

References 37 publications

Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea

Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea

A review of karenia mikimotoi: Bloom events, physiology, toxicity and toxic mechanism

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