ABR: Continuing Studies of the Role of Hydrodynamical and Biological Processes During Settlement of Infaunal Invertebrates

这是一个基于成就的续约奖励， 研究流体动力学和生物过程的作用 在底栖无脊椎动物定居期间。 最终目标 的 研究的目的是确定空间尺度 和 水动力学和生物学条件 通过沉降幼虫的选择性解释了观察到的 成人 分布模式。 研究涉及以下内容 三个一般性问题。1)有能力的幼虫在哪里 在水柱中，它们的沉降率是多少， 水沙特性的作用 2)做幼虫 在空间尺度上积极选择优选的基质， 米在实验室和100米到公里在 场地？ 3)水流中沉积物的选择是如何完成的 的 是不是有特定的幼虫行为 剥削 物理机制，以促进 活性 选择和选择是否有物理条件 是不可能的 解决这些问题的实验将是 在继续研究沉积物选择的同时进行 特定底栖无脊椎动物的功能 成虫的生活史特征和生境亲和力。 其目的是为了概括关于 在解释中尺度成人分布的解决，通过一个 实验室和实地研究相结合，对各种 “类型” 的 物种 (e.g., 在 方面 的 生活 历史 特征、分类地位和成虫生境亲和性。

This is an Accomplishment-Based Renewal award to continue research on the role of hydrodynamical and biological processes during settlement of infaunal invertebrates. The ultimate goal of the research is to determine the spatial scales and hydrodynamical and biological conditions for which substrate selectivity by settling larvae account for observed adult patterns of distribution. The research addresses the following three general questions. 1) Where are competent larvae located within the water column and what is their settlement rate as a function of flow and sediment characteristics? 2) Do larvae actively select preferred substrates over spatial scales of meters in the laboratory and of 100's of meters to kilometers in the field? 3) How is sediment selection accomplished in flow -- that is, are there specific larval behaviors that permit exploitation of the physical regime to facilitate active selection and are there physical conditions for which selection is impossible? Experiments to address these question will be conducted while continuing the study of sediment selection capabilities of particular infaunal invertebrates as a function of life history characteristics and habitat affinity of adults. The intent is to iterate on generalizations regarding the role of settlement in explaining mesoscale adult distributions through a combination of laboratory and field studies on a variety of "types" of species (e.g., in terms of life history characteristics, taxonomic position and adult habitat affinity.