

FOLLOWUS
1. Fujian Provincial Key Laboratory of Coastal Ecology and Environmental Studies Xiamen University
2. Key Laboratory of Coastal and Wetland Ecosystems Ministry of Education Xiamen University
3. College of Oceanography and Food Science Quanzhou Normal University
网络首发:2016-05-10,
纸质出版:2017
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Seasonal variations of group-specific phytoplankton cell death in Xiamen Bay, China[J]. 海洋湖沼学报(英文), 2017,35(2):324-335.
Huang, X., Liu, X., Chen, J. et al. Seasonal variations of group-specific phytoplankton cell death in Xiamen Bay, China., Chin. J. Ocean. Limnol. 35, 324–335 (2017). https://doi.org/10.1007/s00343-016-5270-3
Seasonal variations of group-specific phytoplankton cell death in Xiamen Bay, China[J]. 海洋湖沼学报(英文), 2017,35(2):324-335. DOI: 10.1007/s00343-016-5270-3.
Huang, X., Liu, X., Chen, J. et al. Seasonal variations of group-specific phytoplankton cell death in Xiamen Bay, China., Chin. J. Ocean. Limnol. 35, 324–335 (2017). https://doi.org/10.1007/s00343-016-5270-3 DOI:
The importance of phytoplankton cell death is being increasingly recognized
however
there are still no published reports on this in Xiamen Bay. In this study
the proportion of dead phytoplankton cells associated with environmental factors was assessed at a station in Xiamen Bay from December 2012 to December 2013
using a cell digestion assay
which is an effective method to analyze dead/ living cells in complex natural phytoplankton communities. The percentages of dead cells (% DC) in the total phytoplankton in summer (16%±6%) were lower than those in winter (27%±16%). Six groups of phytoplankton (G1–G6) were categorized by flow cytometry. These phytoplankton communities with diverse seasonal variations in % DC had different responses to environmental constraints. The main factors affecting mortality were temperature and salinity
while nutrient concentration showed little influence on phytoplankton death. Additionally
our results provide evidence that chlorophyll a concentrations had an inverse relationship with total phytoplankton % DC and viable cell abundance was more meaningful than total cells to explain variations in environmental parameters (such as Chl a). Moreover
the lowest mean % DC in total phytoplankton was 16%±6% at our sample site
which is in a subtropical area with high water temperatures
full solar radiation
and rich nutrients. This indicates that phytoplankton cell death is a process that cannot be ignored. In summary
phytoplankton cell death is important in understanding the dynamics of phytoplankton communities and the functioning of subtropical ecosystems.
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