Global changes in climatic conditions are expected to disrupt marine ecosystems. Ocean warming is one of many concerns, since more than 90% of the Earth's warming occurs in the oceans. Macrophyte‐dominated communities recently have become the focus of climate mitigation due to their high carbon sequestration rate. Therefore, there is an urgent need to understand the effects of environmental variables on the phenological response of photosynthesis in entire macrophyte communities (i.e., community production). We conducted 30 monitoring surveys from May 2015 to February 2017 and collected time‐series data of environmental variables in Zostera marina (3 m depth) and Sargassum siliquastrum (1 m depth) communities. The community production and respiration from two different macrophyte communities were calculated from dissolved oxygen time‐series. Analysis of the time‐series indicated strong diurnal frequencies for dissolved oxygen, light, and net ecosystem production, whereas weekly frequencies dominated for water temperature, chlorophyll a fluorescence, and current speed. Water temperature appeared to drive mean gross ecosystem production over the course of a year and light induced variations in the short‐term and were similar in both macrophyte communities.

中文翻译：

---

大型藻类和海草冠层中总生态系统生产的物候受季节性温度驱动

预计全球气候条件的变化会破坏海洋生态系统。海洋变暖是众多关注之一，因为地球变暖的 90% 以上发生在海洋中。由于其高碳固存率，以大型植物为主的社区最近已成为减缓气候变化的重点。因此，迫切需要了解环境变量对整个大型植物群落（即群落生产）光合作用物候响应的影响。我们于 2015 年 5 月至 2017 年 2 月进行了 30 次监测调查，收集了 Zostera marina（3 m 深）和 Sargassum silquastrum（1 m 深）群落环境变量的时间序列数据。根据溶解氧时间序列计算来自两个不同大型植物群落的群落生产和呼吸。时间序列分析表明，溶解氧、光和生态系统净产量的昼夜频率很强，而水温、叶绿素 a 荧光和水流速度则以周频率为主。在一年的过程中，水温似乎推动了平均生态系统总产量，而光在短期内引起了变化，并且在两个大型植物群落中都相似。