文章基本信息

标题：Influence of underwater light fields on pigment characteristics in the Baltic Sea – results of statistical analysis
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作者：Joanna Stoń-Egiert ; Roman Majchrowski ; Mirosław Darecki 等
期刊名称：Oceanologia
印刷版ISSN：0078-3234
出版年度：2012
卷号：54
期号：1
页码：1-21
DOI：10.5697/oc.54-1.007
出版社：Elsevier B.V.
摘要：Changes in phytoplankton pigment concentrations in Case 2 waters (such as those of the Baltic Sea) were analysed in relation to the light intensity and its spectral distribution in the water. The analyses were based on sets of empirical measurements containing two types of data: chlorophyll and carotenoid concentrations obtained by HPLC, and the distribution of underwater light fields measured with a MER 2040 spectrophotometer – collected during 27 research cruises on r/v ‘Oceania’ in 1999–2004. Statistical analysis yielded relationships between the total relative (to chlorophyll a concentrations) concentrations of major groups of phytoplankton pigments and optical depth τ, between the total relative concentrations of major groups of photosynthetic pigments (chlorophylls b (Cchl b tot/Cchl a tot), chlorophylls c (Cchl c tot/Cchl a tot) and photosynthetic carotenoids (CPSC tot/Cchl a tot)) and the spectral fitting function (the ‘chromatic acclimation factor’), and between the total relative concentrations of photoprotective carotenoids (CPPC tot/Cchl a tot) in Baltic waters and the potentially destructive radiation (PDR), defined as the absolute amount of energy in the blue part of the spectrum (400–480 nm) absorbed by unit mass of chlorophyll a. The best approximations were obtained for the total chlorophyll c content, while the relative estimation errors were the smallest (σ− = 34.6%) for the approximation to optical depth and spectral fitting function. The largest errors related to the approximation of chlorophyll b concentrations: σ− = 56.7% with respect to optical depth and 57.3% to the spectral fitting function.
关键词：Pigments ; Phytoplankton ; Underwater irradiance ; Statistical analysis ; Baltic Sea