发表机构
University of Illinois Urbana-Champaign; Université Paris-Saclay, CEA, CNRS, NIMBE, LIONS（伊利诺伊大学厄巴纳-香槟分校; 巴黎萨克雷大学、法国原子能和替代能源委员会、法国国家科学研究中心、分子与材料纳米结构研究所、离子和分子实验室）
机构由 AI 辅助整理，请以论文原文为准。AI 中文总结
本研究通过耦合模拟揭示，振荡流中幼虫沉降的主导性状取决于局部流动结构：快速流中游泳速度关键，回流区中体形排列决定输运与滞留。
AI 中文摘要
幼虫的扩散与沉降决定了固着海洋种群的补充和底栖群落的组装，然而幼虫性状如何与近表面流动结构相互作用以引导沉降仍不清楚。我们使用耦合的水动力学和幼虫尺度模拟，解析了从圆形到细长的游泳速度和体形如何影响脊状基质上振荡流中的沉降。不同性状组合的沉降成功率差异可达一个数量级。近表面流动通过差异调控向基质的输运、在基质附近的滞留以及与基质的接触，充当了性状过滤器。最关键的性状取决于局部流动结构。在快速流动限制接近沉降表面的区域，游泳速度最为重要。在流动于基质脊间再循环的区域，依赖体形的排列控制着输运和滞留。这些结果将幼虫性状与流动介导的沉降机制联系起来，并为理解复杂底栖栖息地中补充变化提供了物理框架。
英文摘要
Larval dispersal and settlement govern the replenishment of sessile marine populations and the assembly of benthic communities, yet how larval traits interact with near-surface flow structures to direct settlement remains unclear. We used coupled hydrodynamic and larval-scale simulations to resolve how swimming speed and body shape, from circular to elongated, influence settlement in oscillatory flow over ridged substrates. Settlement success differed by up to an order of magnitude across trait combinations. Near-surface flow acted as a trait filter by differentially regulating transport to, retention near, and encounters with the substrate. The trait that mattered most depended on the local flow structure. Where rapid flow restricted access to settlement surfaces, swimming speed was most important. Where flow recirculated between substrate ridges, shape-dependent alignment controlled transport and retention. These results link larval traits to flow-mediated settlement mechanisms and provide a physical framework for understanding how recruitment varies across complex benthic habitats.
