Collaborative Research: Salp Swarm Dynamics: Energetics, Growth and Reproduction of Two Bloom-Forming Species

合作研究：樽海鞘群动力学：两种水华形成物种的能量、生长和繁殖

• 批准号: 0003272
• 负责人: Richard Miller
• 金额: $ 20万
• 依托单位: Temple University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2004-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0003272&HistoricalAwards=false
• 关键词: Collaborative; Research; Salp; Swarm; Dynamics

Salps are holoplanktonic grazers that have a life history, feeding biology and population dynamicstrikingly different from copepods or other crustacean zooplankton. They can occur in very dense populations that cover large areas, and these blooms have been shown to have major impacts due to grazing and production of fast?sinking fecal pellets. However the conditions supporting bloom formation, and the energetics, reproduction and behavior of the bloom?forming salps are still poorly understood. This study will focus on two species of salps that are global in their distribution and representative of two genera that commonly form large blooms. Salpa aspera regularly occurs during the summer in high concentrations in the slope waters of the Mid?Atlantic Bight, while Thalia democratica regularly forms dense populations during the winter spring in the Georgia Bight. The investigators will examine feeding, metabolism, growth, reproduction and population dynamics of these salps. They will use two independent modeling approaches, grounded in experimental and field data, to extend their observations to other time and space scales. interpret ouexperimental and modeling results will be interpreted within the context of the environmental conditions to which the salps are exposed. This integrated approach will provide the best basis for understanding how salp blooms form and persist. Results of this study will extend to other species that occur in high densities in many locations, allowing scientists to better evaluate the importance of salps in biogeochemical cycles and in structuring the pelagic environment.

海鞘是一种全栖食草动物，其生活史、摄食生物学和种群动态与桡足类或其他甲壳类浮游动物截然不同。它们可以发生在覆盖大面积的非常密集的种群中，这些水华已被证明会产生重大影响，因为放牧和生产快？下沉的粪粒然而，支持水华形成的条件，以及水华的能量学、繁殖和行为？对囊膜的形成仍知之甚少。 这项研究将集中在两种海鞘，是全球性的分布和两个属的代表，通常形成大的花朵。Salpa aspera经常发生在夏季高浓度的斜坡沃茨的中部？大西洋湾，而Thalia民主定期形成密集的人口在冬季春季在格鲁吉亚湾。研究人员将研究这些海鞘的摄食、代谢、生长、繁殖和种群动态。他们将使用两种独立的建模方法，以实验和现场数据为基础，将他们的观察扩展到其他时间和空间尺度。解释实验和模拟结果将在海鞘所暴露的环境条件的范围内进行解释。 这种综合的方法将提供最好的基础，了解如何形成和持续的海藻开花。 这项研究的结果将扩展到在许多地方以高密度出现的其他物种，使科学家能够更好地评估樽海鞘在海洋地球化学循环和构建远洋环境中的重要性。