Seasonal productions of dinoflagellate cysts in relation to environmental characteristics in Jinhae-Masan Bay, Korea: One year sediment trap observation

Title
Seasonal productions of dinoflagellate cysts in relation to environmental characteristics in Jinhae-Masan Bay, Korea: One year sediment trap observation
Author(s)
신현호
KIOST Author(s)
Shin, Hyeon Ho(신현호)
Publication Year
2019-05-27
Abstract
To investigate dinoflagellate cyst production and seasonality in relation to major environmental factors, such as water temperature, salinity, chlorophyll-a (chl-a) and dissolved nutrients, and to propose dinoflagellate cysts as possible biological indicators for the reconstruction of past environmental conditions, a sediment trap study was conducted for one year, from March 2011 to February 2012, in Jinhae-Masan Bay, Korea. Marked increases in dinoflagellate cyst productionwere documented in Jinhae-Masna Bay during two distinct seasons (summer and late autumn) characterized by different environmental conditions. Summer (July and August) was characterized by relatively high water temperature, dissolved inorganic nitrogen (DIN), and chl-a concentrations and low salinity, whereas late autumn (November and December) exhibited high dissolved inorganic phosphorus, low water
temperature and high salinity, compared to those of the summer. Fourteen dinoflagellate cyst taxa were identified. These assemblages were dominated by Brigantedinium species (round brown cyst), cysts of Scrippsiella species, Spiniferites species and cysts of Alexandrium species (ellipsoidal cyst). The total flux of dinoflagellate cysts ranged from 781 cysts m -2 day -1 to 5,602 cysts m -2 day -1, and the production of autotrophic dinoflagellate cysts was mainly restricted to the warmest months (July-September) and autumn.
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/22599
Bibliographic Citation
Japan Geoscience Union, 2019
Publisher
Japan Geoscience Union
Type
Conference
Language
English
Publisher
Japan Geoscience Union
Related Researcher
Research Interests

Marine bioresource,Marine phytoplankton diversity / ecology,Marine micropaleontology,해양생물자원,해양식물플랑크톤 다양성/생태학,해양미고생물학

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