Dinoflagellate cyst distribution in surface sediments of Ambon Bay (eastern Indonesia): Environmental conditions and harmful blooms

MARINE POLLUTION BULLETIN

卷:166

Article

Likumahua, Sem^1,2  Sangiorgi, Francesca³  de Boer, M. Karin^1,4  Tatipatta, Willem M.²  Pelasula, Daniel D.²  Polnaya, Dominggus²  Hehuwat, Jance²  Siahaya, Donna M.⁵  Buma, Anita G. J.¹ 

[1] Univ Groningen, Fac Sci & Engn, Energy & Sustainabil Res Inst Groningen, Dept Ocean Ecosyst, Nijenborgh 7, NL-9747 AG Groningen, Netherlands

[2] Ctr Deep Sea Res LIPI, Jl Y Syaranamual Guru Guru Poka, Ambon, Indonesia

[3] Univ Utrecht, Dept Earth Sci Marine Palynol & Paleoceanog, Princetonlaan 8A, NL-3584 CB Utrecht, Netherlands

[4] Univ Groningen, Fac Sci & Engn, Beta Sci Shop, Nijenborgh 6, NL-9747 AG Groningen, Netherlands

[5] Environm Agcy North Halmahera Dist, Jl Kawasan Pemerintahan, Tobelo Halmahera Utara 97762, Indonesia

关键词: Dinoflagellate cysts;    Eutrophication;    Pyrodinium bahamense;    Toxic algal bloom;    Seedbank;   

DOI  :  10.1016/j.marpolbul.2021.112269

来源: Elsevier

【 摘 要 】

The present study aimed to document dinocyst ecological preferences in Ambon Bay, Eastern Indonesia, and to investigate if the bay sediments serve as a seedbank for toxic bloom events. To this end, dinocyst and geochemical analyses of surface sediment samples were performed, along with physicochemical water column parameters. Twentythree dinocyst species were identified, and high dinocyst concentrations (up to similar to 12,000 cysts g(-1) dry sediment) were found in the inner bay. Environmental factors such as surface water temperature and salinity generally played an important role in dinocyst distribution. The concentration of Polysphaeridium zoharyi cysts showed a strong positive correlation with phosphorus. A statistically significant correlation was also found with the concentration of other autotrophic dinocysts in the sediments, and an inverse correlation was observed with the sediment C/N ratio. Cysts may serve as seedbanks for Pyrodinium bahamense blooms in the area.

【 授权许可】

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