THE INFLUENCE OF SALINITY AND TEMPERATURE COVARIATION ON THE PHOTOPHYSIOLOGICAL CHARACTERISTICS OF ANTARCTIC SEA ICE MICROALGAE
THE INFLUENCE OF SALINITY AND TEMPERATURE COVARIATION ON THE PHOTOPHYSIOLOGICAL CHARACTERISTICS OF ANTARCTIC SEA ICE MICROALGAE
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DOI：
10.1111/j.0022-3646.1992.00746.x
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发表时间：
1992-12-01
影响因子：
2.9
通讯作者：
SULLIVAN, CW
中科院分区：
文献类型：
--
作者：
ARRIGO, KR;SULLIVAN, CW
测试海冰微藻对环境辐照度（0至150 μ E.m-2.s-1）、温度（-6摄氏度至+6摄氏度）和盐度（0至100 ppt）变化的响应，以确定这些变量是否独立或一致地影响微藻光合作用速率。海冰微藻的光合效率和最大光合速率随着培养温度的增加而增加。此外，光合效率，最大光合速率，量子产额最大的盐度之间的30和50 ppt。与此相反，平均比吸收系数是最低的海水盐度附近，饱和辐照度，I（s），似乎是成反比的盐度。结果还表明，盐度对海冰微藻生长的影响是独立的温度或光引起的，盐度和光或温度之间的函数关系是乘法。这些信息是必不可少的，用于描述藻类生长的环境中，光照，温度和盐度同时变化，如海冰内或在边缘冰边缘区的水柱内的算法的正确制定。
The responses of sea ice microalgae to variation in ambient irradiance (0 to 150 muE.m-2.s-1), temperature (-6-degrees to +6-degrees-C), and salinity (0 to 100 ppt) were tested to determine whether these variables act independently or in concert to influence rates of microalgal photosynthesis. The photosynthetic efficiency and maximum photosynthetic rate for sea ice microalgae increased as a function of incubation temperature between -6-degrees and +6-degrees-C. Furthermore, photosynthetic efficiency, maximum photosynthetic rate, and quantum yield were greatest at salinities between 30 and 50 ppt. In contrast, the mean specific absorption coefficients were lowest near seawater salinities, and the saturating irradiance, I(s), appeared to be inversely proportional to salinity. Results also suggest that the effects of salinity on the growth of sea ice microalgae are independent of those elicited by temperature or light, and that the functional relationship between salinity and light or temperature is multiplicative. This information is essential to the proper formulation of algorithms used to describe algal growth in environments where light, temperature, and salinity are changing simultaneously, such as within sea ice or within the water column at the marginal ice edge zone.