1. The Juan Fernandez Ridge, a vulnerable marine ecosystem located far off the coast of central Chile and formed by several seamounts, guyots and three islands (Robinson Crusoe, Santa Clara and Alejandro Selkirk), has recently been declared a Coastal Marine Protected Area of Multiple Uses with several National Parks embedded in it.
2. Recent studies have highlighted the influence of remote and local oceanographic structures on the hydrographic dynamics of this ridge. However, there is still a gap in understanding how they affect the structure and dynamics of the surrounding insular planktonic communities.
3. A hydroacoustic and oceanographic survey was conducted during the austral spring (October 2016), including hydrographic and zooplankton sampling around Robinson Crusoe Island. Oceanographic features were identified and tracked using satellite data (chlorophyll‐a (Chl‐a) and sea surface temperature) and modelling results.
4. Two events of Chl‐a increase relative to a threshold (>0.45 mg m⁻³) were forced by different physical processes, both affecting the western side of Robinson Crusoe Island. In event A during the cruise period, Chl‐a subsurface maxima were associated with the arrival of a coastal meander originating on the continental shelf off Chile (remote process); the zooplankton was dominated by copepods and salps, with an evident coastal–oceanic gradient. In event B, Chl‐a maxima were linked to a local upwelling forced by the intensification of a localized SSW wind. No influence of remote eddies or local Von Kármán vortices on Chl‐a distribution was observed.
5. These findings highlight the influence of remote and local physical processes on the structure of planktonic communities around Robinson Crusoe Island. Understanding the variability of these mechanisms and their effects at the base of the pelagic food web is critical in adopting an ecosystem‐level approach.

中文翻译：

---

推动胡安·费尔南德斯群岛浮游生物系统变异的本地和远程物理过程：一个多学科框架，提供保护方面的见识

1. 胡安·费尔南德斯海岭（Juan Fernandez Ridge）是一个脆弱的海洋生态系统，位于智利中部偏远海岸，由几个海山，古人和三个岛屿（罗宾逊漂流记，圣塔克拉拉和亚历杭德罗·塞尔基克）组成，最近被宣布为沿海海洋保护区，用途广泛内嵌几个国家公园。
2. 最近的研究强调了偏远和本地海洋结构对这一山脊水文动力学的影响。但是，在理解它们如何影响周围的岛状浮游生物群落的结构和动力学方面仍然存在差距。
3. 在南方春季（2016年10月）进行了水声和海洋学调查，包括鲁滨逊漂流记岛周围的水文和浮游动物采样。使用卫星数据（叶绿素a（Chl-a）和海面温度）和建模结果来识别和跟踪海洋学特征。
4. 相对于阈值（> 0.45 mg m ^-3）的两个Chl-a增加事件是由不同的物理过程引起的，都影响了Robinson Crusoe岛的西侧。在巡航期间的事件A中，Cha的地下最大值与源自智利沿海大陆架的沿海曲折的到来有关（远程过程）；浮游动物以co足类和小s​​al类为主，并具有明显的沿海-海洋梯度。在事件B中，最大的Chl-a与局部SSW风的强化所强迫的局部上升流有关。没有观察到远程涡流或局部VonKármán涡旋对Chl-a分布的影响。
5. 这些发现强调了偏远和本地物理过程对鲁滨逊漂流记岛周围浮游生物群落结构的影响。了解这些机制的可变性及其在远洋食物网基础上的影响，对于采用生态系统层面的方法至关重要。