Nitrogen and phosphorus intake by phytoplankton in the Xiamen Bay

Cai Lin; Hui Li; Qing He; Kuncan Xu; Shengsan Wu; Yuanbiao Zhang; Jinmin Chen; Baohong Chen; Libin Lin; Meiluan Lu; Weifen Chen; Rongkun Tang; Weidong Ji

doi:10.1007/s00343-010-9235-7

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Nitrogen and phosphorus intake by phytoplankton in the Xiamen Bay

Updated：2023-05-16

- Nitrogen and phosphorus intake by phytoplankton in the Xiamen Bay
- Journal of Oceanology and Limnology Vol. 28, Issue 1, Pages: 99-105(2010)
- Affiliations：
  
  1. Third Institute of Oceanography State Oceanic Administration
  2. College of Oceanography and Environmental Science of Xiamen University
- Author bio：
- Funds：
- DOI：10.1007/s00343-010-9235-7
  CLC：
- Online First：27 January 2010，
  
  Published：2010
- Accepted：
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Lin, C., Li, H., He, Q. et al. Nitrogen and phosphorus intake by phytoplankton in the Xiamen Bay., Chin. J. Ocean. Limnol. 28, 99–105 (2010). https://doi.org/10.1007/s00343-010-9235-7
DOI：

Lin, C., Li, H., He, Q. et al. Nitrogen and phosphorus intake by phytoplankton in the Xiamen Bay., Chin. J. Ocean. Limnol. 28, 99–105 (2010). https://doi.org/10.1007/s00343-010-9235-7 DOI：

摘要

Abstract

This paper describes a time series experiment examining the nitrogen and phosphorus intake of natural phytoplankton communities by a microcosms approach. Seawater samples containing natural phytoplankton communities were collected from waters around Baozhu Islet in inner Xiamen Bay and around Qingyu Islet in the outer bay. The goal was to elucidate the relationship between phytoplankton population enhancement

the biological removal of nitrogen and phosphorus from the seawater

and the phytoplankton nitrogen and phosphorus intake ratio based on nitrogen and phosphorus removal from seawater by phytoplankton

to provide a basis for detecting prewarning conditions for red tide and the assessment of red tide events. Two key results were obtained: 1. During the experiment

the nitrogen and phosphorus seawater concentrations in samples from these two sites were negatively and closely correlated to the logarithm of the phytoplankton cell concentration and to the value of the apparent oxygen increment. The ratio of the intake coefficients was 3.5:1 for phosphorus and 1.1:1 for nitrogen for the phytoplankton between these samples from around Baozhu Islet and Qingyu Islet

respectively. This indicates that the intake capabilities of phytoplankton for nitrogen in the two waters are essentially identical. However

for phosphorus

the capability was much higher in the Baozhu Islet waters than the Qingyu Islet waters. In other words

the phytoplankton in Qingyu Islet waters produced more biomass while consuming the same amount of phosphorus as the other waters; 2. The phytoplankton nitrogen and phosphorus intake ratio from the Baozhu Islet and Qingyu Islet waters was 20:1 and 36:1

respectively. The latter waters had a significantly higher ratio than the former and both were higher than the Redfield Ratio. These results indicate that nitrogen and phosphorus intake ratios by phytoplankton can vary significantly from region to region.

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