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Method for estimating fixed carbon content of ocean ultra-miniature phytoplankton

A phytoplankton and ultra-micro technology, which is applied in computing, special data processing applications, instruments, etc., can solve problems such as difficult collection of samples, distinction, and no calculation model method for ocean ultra-micro phytoplankton carbon fixation, and achieve good linearity relationship, estimate the effect of strong reliability

Inactive Publication Date: 2016-07-13
QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI +1
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Problems solved by technology

However, because HPLC cannot distinguish eukaryotic nanophytoplankton from other particle-sized eukaryotic phytoplankton based on pigment characteristics, the model is insufficient for calculating the primary productivity of nanophytoplankton, which underestimates the contribution of nanophytoplankton to primary production. Contribution to productivity
[0005] At present, there is no convenient and effective model method for calculating the amount of carbon sequestration by marine nanophytoplankton
[0006] On the other hand, since Synechococcus Syn generally belongs to the open sea area, it is difficult to collect samples. Therefore, the invented estimation model is only for Prochlorococcus Pro and eukaryotic ultramicrophytoplankton Euk

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  • Method for estimating fixed carbon content of ocean ultra-miniature phytoplankton
  • Method for estimating fixed carbon content of ocean ultra-miniature phytoplankton
  • Method for estimating fixed carbon content of ocean ultra-miniature phytoplankton

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Embodiment 1

[0060] Such as figure 2 The value shown is A Syn =1922,A Euk =278, T=4.9839473°C, I 0 =40.77893, when Chl=4.1153 (T, I 0 , Chl according to the sample collection time and place: in March 2005, east longitude 121.4833 °, north latitude 40.45 °, obtained from the average value in March 2005 of NASAAqua / MODIS satellite), the primary productivity of Synechococcus obtained by model calculation is 0.81 mg· C / m3, the primary productivity of nanoeukaryotic algae is 1.27 mg·C / m3, and the primary productivity of nanophytoplankton is 2.08 mg·C / m3.

Embodiment 2

[0062] The value is A Syn =5420,A Euk =1472, T=16.34129°C, I 0 =49.78449, when Chl=3.8289 (T, I 0 , Chl according to sample collection time and place: in June 2005, east longitude 121.03 °, north latitude 38.70 °, obtained from the mean value in June 2005 of NASAAqua / MODIS satellite), the primary productivity of Synechococcus was calculated by the model to be 5.4 mg· C / m3, the primary productivity of nanoeukaryotic algae is 16.6 mg·C / m3, and the primary productivity of nanophytoplankton is 22.0 mg·C / m3.

Embodiment 3

[0064] The value is A Syn =24593,A Euk =2165, T=22.85763°C, I 0 =33.25993, when Chl=6.72709 (T, I 0 , Chl according to sample collection time and place: in September 2005, east longitude 121.07 °, north latitude 40.73 °, obtained from the average value in September 2005 of NASAAqua / MODIS satellite), the primary productivity of Synechococcus is calculated by the model to be 24.2 mg· C / m3, the primary productivity of nanoeukaryotic algae is 24.3 mg·C / m3, and the primary productivity of nanophytoplankton is 48.5 mg·C / m3.

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Abstract

The invention relates to a model method for calculating the fixed carbon content of ocean ultra-miniature phytoplankton. The method comprises the following steps: respectively testing abundance of synechococcus and ultra-miniature eukaryotic algae in an acquired sample; respectively calculating the carbon biomass and growth velocity of the synechococcus and the ultra-miniature eukaryotic algae so as to obtain the euphotic layer depth of sampling points of the synechococcus and the ultra-miniature eukaryotic algae; respectively calculating responses of the synechococcus and the ultra-miniature eukaryotic algae to surface light intensity on the basis of water depth variation; respectively calculating primary productivity of the synechococcus and the ultra-miniature eukaryotic algae so as to obtain primary productivity of ultra-miniature phytoplankton at the sampling points. By adopting the method, the fixed carbon content of ultra-miniature phytoplankton in offshore, shelf sea and high-latitude open ocean (the latitude of which is greater than 40 degrees) can be calculated, compared with a method for determining the primary productivity of ultra-miniature phytoplankton on the basis of 14C in situ, the method saves time and labor, and can be used for estimating the primary conductivity of ultra-miniature phytoplankton in a relatively large research area. Tests show that the primary conductivity calculated by using the method has relatively good linear relationship with that of ultra-miniature phytoplankton tested on the basis of 14C, good estimation reliability is achieved, and a theoretic basis is provided for later practical study.

Description

technical field [0001] The invention relates to the technical field of marine microbial ecology, in particular to a model method for calculating the carbon fixation amount of marine ultramicrophytoplankton based on cell carbon biomass. Background technique [0002] Marine ultramicrophytoplankton (0.2-2μm) are the most abundant primary producers in the ocean, widely distributed in the global ocean, and can contribute more than 80% of primary productivity in some oligotrophic oceanic areas. Marine nanophytoplankton include prokaryotic (Prochlorococcus Pro, Synechococcus Syn) and eukaryotic (Eukaryotic nanophytoplankton Euk) taxa. Prochlorococcus is concentrated in the oligotrophic oceanic area between 40 degrees north and south latitude. Synechococcus and eukaryotic nanophytoplankton are widely distributed in the global ocean, and make important contributions to primary productivity in nearshore, shelf seas, and high-latitude open ocean areas. [0003] At present, there are ...

Claims

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Application Information

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IPC IPC(8): G06F19/00
CPCG16Z99/00
Inventor 梁彦韬张永雨焦念志刘晓勇
Owner QINGDAO INST OF BIOENERGY & BIOPROCESS TECH CHINESE ACADEMY OF SCI
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