English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26987/38787
Visitors : 2299325      Online Users : 46
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search
LoginUploadHelpAboutAdminister

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48282

Title: Responses of Phytoplankton Communities to Environmental Variability in the East China Sea
Authors: Liu X
W Xiao
M. R. Landry
K-P Chiang
L Wang
B-Q Huang
Contributors: 國立臺灣海洋大學:海洋觀光管理學士學位學程(學系)
Date: 2016-04
Issue Date: 2018-08-22T01:44:00Z
Publisher: Ecosystem
Abstract: Abstract: We investigated seasonal and spatial patterns of phytoplankton variability in the East China Sea in order to understand biomass and compositional responses to environmental factors in the contemporary ocean. We used satellite imagery from 2002 to 2013 to define the mean seasonal climatology of sea surface temperature and chlorophyll a. Phytoplankton and environmental measurements were synthesized for the study region and four seasons from 11 cruises conducted from 2006 to 2012. The results of CHEMTAX analyses on group-specific phytoplankton composition were consistent with those of microscopy and flow cytometry observations, revealing three patterns of seasonal variability. Canonical Correspondence Analysis (CCA) and Generalized Additive Models (GAMs) were used to resolve the spatiotemporal variations of major phytoplankton groups and their relationships to month, temperature, salinity, nutrients, mixed-layer depth and bottom depth. Monsoon forcing drove the distributional patterns of environmental factors and was critical to explaining phytoplankton dynamics at the seasonal scale. Compared to autumn and winter, significantly higher chlorophyll a concentrations were observed during spring and summer, associated with the spring bloom and the Changjiang (Yangtze) River plume, respectively. Diatoms dominated biomass over the East China Sea, especially during the summer months influenced by the Changjiang (Yangtze) River plume, whereas dinoflagellates were especially important during spring blooms. GAMs analysis showed the differences in their responses to environmental variability, with a clear mid-range salinity optimum (~ 31) and a more pronounced temperature effect for dinoflagellates. The photosynthetic bacteria, Prochlorococccus and Synechococcus, both increased strongly with warming, but Prochlorococcus showed stronger sensitivity to variations in physical environmental parameters, while Synechococcus was more responsive to chemical (nutrient) variability, with broader tolerance of low salinity conditions.
Relation: 19 pp.832-849
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/48282
Appears in Collections:[海洋觀光管理學士學位學程(學系)] 期刊論文

Files in This Item:

File Description SizeFormat
index.html0KbHTML31View/Open


All items in NTOUR are protected by copyright, with all rights reserved.

 


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback