Biocomplexity-Dynamic Controls On Emergent Properties of River Flood Plains

0120523斯坦福这个生物复杂性建议的概念基础是河流泛滥平原是生态组织的区域中心。 这个系统依赖于动态的、非线性的物理和生物过程之间的相互作用，这些过程将水、热和物质（生物区系、沉积物和植物生长养分）、通量和滞留与河流景观变化联系起来。 短时间，高流量洪水，渠道和泥沙运动，粗糙度增加，由于存在植被和枯木和地下水的上涌之间的强烈相互作用，创造了一个复杂的，动态的资源斑块分布，我们称之为移动栖息地马赛克。 这一概念促进了生物多样性和复杂的食物网，这些食物网隔离和转化能量和物质。利用这一概念基础和对美国西部河流中广阔的砾石卵石洪泛平原进行的二十年研究的影响。我们提出了一套工作假说，解决这些和其他类似的洪泛平原的紧急性质。 我们将改进和整合我们现有的三维水文模型与新的通道变化，热通量和养分循环模型在一个动态的洪泛平原地球化学模拟器，是从遥感信息初始化。 我们的目标是在空间上明确量化的热量和营养通量的栖息地dynamics.We提出了一个教育组成部分，积极主动地联系洪泛区的研究与夏季学术计划在平头湖生物站（FLBS），我们当地美国土著大学的自然资源课程（Salish and Kootenai College）以及为环境专业人员和高中教师举办的年度全国讲习班。

0120523StanfordThe conceptual foundation of this biocomplexity proposal is that river flood plains are regional centers of ecological organization. This system is dependent on interactions among dynamic, nonlinear physical and biological processes linking water, heat and materials (biota, sediment, and plant-growth nutrients), flux and retention to fluvial landscape change. Strong interactions between short-duration, high stream-power floods, channel and sediment movement, increased roughness due to presence of vegetation and dead wood and upwelling of groundwater creates a complex, dynamic distribution of resource patches, which we refer to as the shifting habitat mosaic. This rnosaic promotes biodiversity and complex food webs that sequester and transform energy and materials.Using this conceptual foundation and the implications of two decades of research on expansive gravel-cobble flood plains in western USA rivers. we propose a set of workinghypotheses that address emergent properties of these and other similar flood plains. We will improve and integrate our existing 3D hydrologic model with new channel change, heat flux and nutrient cycling model in a dynamic flood plain biogeochemical simulator that is initialized from remote sensing information. The goal is spatially explicit quantification of heat and nutrient fluxes in relation to the habitat dynamics.We propose an educational component that proactively links the floodplain research with the summer academic program at the Flathead Lake Biological Station (FLBS), the natural resources curriculum of our local Native American college (Salish and Kootenai College) and an annual national workshop for environmental professionals and high school teachers.