Seasonal variations in physiological parameters of phytoplankton across the North Atlantic
Seasonal variations in physiological parameters of phytoplankton across the North Atlantic
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DOI：
10.1093/plankt/20.1.17
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发表时间：
1998
影响因子：
2.1
通讯作者：
Margareth N. Kyewalyanga;T. Platt;S. Sathyendranath;V. Lutz;V. Stuart
中科院分区：
文献类型：
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作者：
Margareth N. Kyewalyanga;T. Platt;S. Sathyendranath;V. Lutz;V. Stuart
研究了作用光谱和吸收光谱的形状以及浮游植物的生理参数（a”，光合-辐射曲线的生物量（B）-特异性初始斜率; PS，曲线的平台; m，光合作用的最大量子产额）的变化。在北大西洋的五个地球化学省收集了两个季节的数据：1992年秋季和1993年春季。此外，使用线性回归分析测试了约9个自变量预测生理参数的能力。结果发现，参数之间的季节比各省之间的变化，虽然各省之间的光谱形状的差异显着。它还表明，几个独立的变量（单独或组合）能够预测参数的总方差的显着部分。但各变量与各参数之间的相关性在各省和各季节间均存在不系统的差异。结果表明，从一个自变量预测一个参数将不得不在一个省的水平上进行：从两个或两个以上的省份的数据合并时，关系改变或消失。
Variations in the shapes of the action and absorption spectra, and the physiological parameters of phytoplankton (a", the biomass (B)-specific initial slope of the photosynthesis-irradi- ance curve; PS,, the plateau of the curve; m, the maximum quantum yield of photosynthesis), were studied. Data were collected in the North Atlantic in five biogeochemical provinces for two seasons: in fall of 1992 and spring of 1993. Further, some nine independent variables were tested for their ability to predict the physiological parameters, using linear regression analyses. It was found that the parameters were more variable between seasons than between provinces, although the differences in the spectral shapes between provinces were significant. It was also shown that several independent variables (alone or in combination) were able to predict a significant fraction of the total variance in the parameters. However, the correlation between variables and parameters differed unsystemati- cally both between provinces and seasons. The results suggest that predicting a parameter from an independent variable would have to be carried out at a province level: the relationship changed or disappeared when data from two or more provinces were pooled.