Thermal acclimation influences the growth and toxin production of freshwater cyanobacteria
Thermal acclimation influences the growth and toxin production of freshwater cyanobacteria
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DOI：
10.1002/lol2.10197
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发表时间：
2021-05-29
影响因子：
7.8
通讯作者：
Fey, Samuel B.
中科院分区：
文献类型：
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作者：
Layden, Tamara J.;Kremer, Colin T.;Fey, Samuel B.
水产科学的中心目标是了解促进有害蓝藻水华的生态因素，特别是在气候变化的情况下，气候变化除了增加平均温度外，还改变了水温的时间变异性。然而，我们还没有考虑这种变异性如何影响蓝藻种群，相对于温度变化的速度，蓝藻种群可能会更缓慢地调整自己的生理(适应)。利用实验室实验，我们发现驯化显著地影响了暴露在不同温度扰动下的蓝藻的生长和毒素产生。这在营养稀少(低营养)和富营养(高营养)条件下都会发生。因此，水生生境热结构的变化可能与生物生理学相互作用，以确定蓝藻水华的频率、严重程度和有害影响。
A central goal of aquatic science is to understand the ecological factors that promote harmful cyanobacterial blooms, especially in light of climate change, which is altering the temporal variability of water temperature, in addition to increasing mean temperatures. However, we have yet to consider how this variability affects cyanobacteria populations that may more gradually adjust their physiology (acclimate) relative to the pace of temperature change. Using laboratory experiments, we show that acclimation dramatically affects the growth and toxin production of cyanobacteria exposed to different temperature perturbations. This occurs in both oligotrophic (low-nutrient) and eutrophic (high-nutrient) conditions. Thus, changes in the thermal structure of aquatic habitats may interact with organismal physiology to determine the frequency, severity, and harmful effects of cyanobacterial blooms.