Sea ice algae growth rate data collected during the SIPEX II voyage of the Aurora Australis, 2012

Chlorophyll data was used to measure growth rates of sea ice algae in CO2 incubations. Sea ice brine microalgae was collected from sackholes. Replicate samples were incubated in ambient air (~0.04% CO2), 0.1% CO2, 1.0% CO2 and 2.0% CO2 concentrations. Three incubation experiments were carried out at SIPEX stations 4 (expt 1) 7 (expt 3) and 8 (expt 4).
Growth rate calcualtions followed a standard exponential growth model, i.e
Bf = Bi x e(rt)

Where Bf equals final biomass, Bi equals initial biomass, r = growth rate and t = time (in days).

本数据集采用叶绿素（chlorophyll）数据，测定了二氧化碳培养条件下海冰藻类的生长速率。实验所用海冰盐水微藻采集自海冰囊孔（sackholes）。将重复样本分别置于大气环境（二氧化碳体积分数约0.04%）、0.1%、1.0%及2.0%的二氧化碳浓度梯度下进行培养。本研究先后在SIPEX的4号（实验1）、7号（实验3）及8号（实验4）站位开展了3组培养实验。
生长速率的计算遵循标准指数生长模型，即：
B_f = B_i × e^{rt}
其中，B_f代表最终生物量，B_i代表初始生物量，r为生长速率，t为培养时长（单位：天）。