Marine Optics

Retrieval of pigment concentrations from the absorption spectra of phytoplankton by multilayered perceptrons

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  • 1. LED, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China; 2. Graduate Univ. of Chinese Academy of Sciences, Beijing 10039, China

Received date: 2009-05-06

  Revised date: 2009-12-25

  Online published: 2010-03-23

Abstract

The absorption spectra of phytoplankton have gradually become an accessible parameter from hyperspectral ocean color. The retrievals of main pigment concentrations from absorption spectra of phytoplankton by multilayered perceptrons were performed. The input parameters for multilayered perceptions were phytoplankton absorption spectra, and the retrieved parameters were Chlorophyll a, b, c, and photosynthetic and non-photosynthetic carotenoids, respectively. The results indicated that Chlorophyll a and c were the most accurate retrieval pigments with average relative deviation of 19.06% and 15.90%, respectively, for the test data subsets, while the poorest performances were found for photosynthetic and non-photosynthetic carotenoids, with average relative deviation of 37.62% and 36.96%, respectively, for the test subsets. Chlorophyll b was retrieved with average relative deviation of 27.47% for the test subsets. The comparable performances of multilayer perceptrons for the training subset and the test subsets suggest that they could be successfully operated on retrieval of main pigments for the waters around the Dangan Islands in the Pearl River Estuary. The multilayer perceptrons of retrieving main pigment from phytoplankton absorption spectra also provide an important way to detect phytoplankton community from hyperspectral ocean color.

Cite this article

ZHOU Wen,CAO Wen-xi,WANG Gui-fen,LIANG Shao-jun,ZHAO Jun,SUN Zhao- . Retrieval of pigment concentrations from the absorption spectra of phytoplankton by multilayered perceptrons[J]. Journal of Tropical Oceanography, 2010 , 29(2) : 46 -51 . DOI: 10.11978/j.issn.1009-5470.2010.02.046

References

[1] BRICAUD A, STRAMSKI D. Spectral absorption coefficients of living phytoplankton and nonalgal biogenous matter: A comparison between the Peru upwelling area and the Sargasso Sea[J]. Limnol Oceanogr, 1990, 35: 562–582.

[2] CHANG G C, DICKEY T D. Partitioning in situ total spectral absorption by use of moored spectral absorption-attenuation meters[J]. Appl Opt, 1999, 38: 3876–3887.

[3] OUBELKHEIR K, CLAUSTRE H, BRICAUD A, et al. Partitioning total spectral absorption in phytoplankton and colored detrital material ontributions
[J]. Limnol Oceanogr Methods, 2007, 5: 384–395.

[4] WANG G F, CAO W X, YANG D T, et al. Partitioning particulate absorption coefficient into contributions of phytoplankton and nonalgal particles: A case study in the northern South China Sea[J]. Estuarine, coastal and shelf Science. 2008,78: 513–520.

[5] LEE Z P, CARDER K L, ARNONE R. Deriving inherent optical properties from water color: A multi-band quasi-analytical algorithm for optically deep waters [J]. Appl Opt, 2002, 41: 5755–5772.

[6] GARVER S A, SIEGEL D. Inherent optical property inversion of ocean color spectra and its biogeochemical interpretation 1. Time series from the Sargasso Sea [J]. J Geophys Res, 1997, 102(C8): 18607–18625.

[7] SMYTH T J, MOORE G F, HIRATA T, et al. Semianalytical model for the derivation of ocean color inherent optical properties: description, implementation, and performance assessment[J]. Appl Opt 2006, 45(31): 8116–8131.

[8] CIOTTI A M, LEWIS M R, CULLEN J J. Assessment of the relationships between dominant cell size in natural phytoplankton communities and the spectral shape of the absorption coefficient[J]. Limnol Oceanogr, 2002, 47: 404–417.

[9] BRICAUD A, CLAUSTRE H, RAS J, et al. Natural variability of phytoplanktonic absorption in oceanic waters: In?uence of the size structure of algal populations[J]. J Geo phys Res, 2004, 109, C11010.

[10] MOREL A, BRICAUD A. Theoretical results concerning light absorption in a discrete medium, and application to speci?c absorption of phytoplankton[J]. Deep-Sea Res, 1981, 28: 1375–1393.

[11] BIDIGARE R R, MORROW J H, KIEFER D A. Derivative analysis of spectral absorption by photosynthetic pigments in the Western Sargasso sea
[J]. J Mar Res, 1989, 47: 323–341.

[12] MILLIE D F, SCHO?ELD O M, KIRKPATRICK G J, et al. Detection of harmful algal blooms using photopigments and absorption signatures: a case study of the Florida red-tide dino?agellate Gymnodinium breve[J]. Limnol Oceanogr, 1997, 42: 1240–1251.

[13] KIRKPATRICK G, MILLIE D F, MOLINE M A, et al. Optical discrimination of a phytoplankton species in natural mixed populations[J]. Limnol Oceanogr, 2000, 45: 467–471.

[14] BIDIGARE R R, ONDRUSEK M E, MORROW J H, et al. In vivo absorption properties of algal pigments[J]. Proc SPIE Ocean Opt X, 1990, 1302: 290–302.

[15] WANG GUIFEN, CAO WENXI, XU DAZHI, et al. Variability of phytoplankton absorption in the northern South China Sea: Influence of the size structure and pigment composition of algal populations[J]. Acta Oceanologica Sinica, 2007, 26(2): 12–25.

[16] HARIMOTO T, ISHIZAKA J, TSUDA R. Latitudinal and vertical distributions of phytoplankton absorption spectra in the central North Pacific during Spring 1994 [J]. J Oceanography, 1999, 55: 667–679.

[17] HOEPFFNER N, SATHYENDRANATH S. Determination of the major groups of phytoplankton pigments from the absorption spectra of total particulate matter[J]. J Geophys Res, 1993, 98: 2789–22803.

[18] STUART V, SATHYENDRANATH V S, PLATT T, et al. Pigment and species composition of natural phytoplankton populations: effect on the absorption spectra[J]. J Plankton Res, 1998, 20:187–217.

[19] LOHRENZ S E, WEIDEMANN A D, TUEL M. Phytoplankton spectral absorption as influenced by community size structure and pigment composition[J]. Journal of Plankton Research, 2003, 25(1): 35–61.

[20] BRICAUD A, MEJIA C, BLONDEAU-PATISSIER D, et al. Retrieval of pigment concentrations and size structure of algal populations from their absorption spectra using multilayered perceptrons[J]. Appl Opt, 2007, 46(8): 1251–1260.

[21] CAO W, YANG Y, XU X, et a1. Regional patterns of particulate spectral absorption in the Pearl River estuary[J]. Chinese Science Bulletin, 2003, 48(21): 2344–2351.

[22] 赵冬至, 罗虎, 傅云娜, 等. 海洋水色组分吸收系数的测定方法研究[J]. 海洋通报, 2004, 23 (3): 81–86.

[23] 王桂芬, 曹文熙, 许大志, 等. 南海北部水体浮游植物比吸收系数的变化[J]. 热带海洋学报, 2005, 24(5): 1–10.

[24] PARSONS T R, MAITA Y, LALLI C M. A Manual of Chemical and Biological Methods for Seawater Analysis[M]. Oxford: Pergamon Press, 1984.

[25] VIDUSSI F, CLAUSTRE H, BUSTILLOS-GUZMAN J, et al. Determination of chlorophylls and catotenoids of marine phytoplankton: Separation of chlorophyll a from divinychlorophyll a and zeaxanthin from lateen[J]. J  Plank Res, 1996, 18(12): 2377–2382.

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