Seasonal production of dinoflagellate cysts in relation to environmental characteristics ih jiiihae-Masan Bay, Korea: One-year sedimerit trap observation SCIE SCOPUS

Cited 2 time in WEB OF SCIENCE Cited 2 time in Scopus
Title
Seasonal production of dinoflagellate cysts in relation to environmental characteristics ih jiiihae-Masan Bay, Korea: One-year sedimerit trap observation
Author(s)
Shin, Hyeon Ho; Li, Zhun; Lim, Dhongil; Lee, Kyun-Woo; Seo, Min Ho; Lim, Weol Ae
KIOST Author(s)
Shin, Hyeon Ho(신현호)Lim, Dhong Il(임동일)Lee, Kyun Woo(이균우)
Publication Year
2018-12-31
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 production were 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 5602 cysts m(-2) day(-1), and the production of autotrophic dinoflagellate cysts was mainly restricted to the wannest months (July-September) and autumn. Multivariable analysis revealed that the production of major dinoflagellate cysts, excluding those of Brigantediniunt species, can be enhanced by environmental conditions during summer in Jinhae-Masan Bay. In particular, the increased production of cysts of Scrippsiella species was related to increased water temperature, and the increased production of Spiniferites species was associated with lower salinity. Two peaks in cyst production of Alexandrium species in August and November corresponded with significant increases in DIN and DIP; however, no significant relationship was found between the production of Brigantedinizun species and environmental factors in Jinhae-Masan Bay. These results suggest that the cysts of Scrippsiella species, Spiniferites species and cysts of Alexandrium species present in sediment samples from Jinhae-Masan Bay can be used as biological indicators to reconstruct past environmental conditions involving relatively high water temperature, low salinity and enhanced nutrient level.
ISSN
0272-7714
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/775
DOI
10.1016/j.ecss.2018.09.031
Bibliographic Citation
ESTUARINE COASTAL AND SHELF SCIENCE, v.215, pp.83 - 93, 2018
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Subject
SCRIPPSIELLA-TROCHOIDEA CYSTS; ALEXANDRIUM-FUNDYENSE; POPULATION-DYNAMICS; JINHAE BAY; EUTROPHICATION; DINOPHYCEAE; INDICATORS; GROWTH; VIABILITY; COMMUNITY
Keywords
Scrippsiella; Spiniferites; Alexandrium; Phytoplankton; Summer; Late autumn
Type
Article
Language
English
Document Type
Article
Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
Related Researcher
Research Interests

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

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