Consumer-resource dynamics is an eco-evolutionary process in a natural plankton community
Consumer-resource dynamics is an eco-evolutionary process in a natural plankton community
复制标题
消费者资源动态是自然浮游生物群落的生态进化过程
DOI：
10.1038/s41559-019-0960-9
复制
发表时间：
2019
影响因子：
16.8
通讯作者：
N. Hairston
中科院分区：
文献类型：
--
作者：
Lindsay R. Schaffner;Lynn Govaert;L. De Meester;S. Ellner;Elizabeth A. Fairchild;Brooks E. Miner;L. Rudstam;P. Spaak;N. Hairston
当影响物种相互作用的特征迅速演变时，生态动态就会在发生时发生改变。这些生态进化动力学已在实验室和中生态实验中反复记录。我们在这里表明，它们对于理解自然生态系统中的群落功能也很重要。水蚤是影响许多湖泊季节性浮游生物动态的主要浮游生物消费者。它对其浮游植物食物的连续性也很敏感，从春季可食用的藻类到夏季相对不可食用的蓝细菌。我们对美国纽约州奥奈达湖的门氏水蚤进行了研究，发现一年内浮游植物的生态变化（从春季硅藻、隐植物和绿色植物到夏季蓝藻）导致消费者随着时间的推移对蓝藻的耐受性不断增强。这种演变反馈了这种主要浮游植物消费者种群丰度的生态季节性变化。奥奈达湖是典型的中营养湖泊，这表明生态进化的消耗资源动态可能很常见。淡水水蚤种群与其可食用和不可食用浮游植物资源的动态变化揭示了自然生态系统中生态进化反馈的罕见证据。
When traits affecting species interactions evolve rapidly, ecological dynamics can be altered while they occur. These eco-evolutionary dynamics have been documented repeatedly in laboratory and mesocosm experiments. We show here that they are also important for understanding community functioning in a natural ecosystem. Daphnia is a major planktonic consumer influencing seasonal plankton dynamics in many lakes. It is also sensitive to succession in its phytoplankton food, from edible algae in spring to relatively inedible cyanobacteria in summer. We show for Daphnia mendotae in Oneida Lake, New York, United States, that within-year ecological change in phytoplankton (from spring diatoms, cryptophytes and greens to summer cyanobacteria) resulted in consumers evolving increasing tolerance to cyanobacteria over time. This evolution fed back on ecological seasonal changes in population abundance of this major phytoplankton consumer. Oneida Lake is typical of mesotrophic lakes broadly, suggesting that eco-evolutionary consumer-resource dynamics is probably common. Changes in the dynamics of freshwater Daphnia populations in relation to their edible and inedible phytoplankton resources reveal rare evidence for eco-evolutionary feedbacks in a natural ecosystem.