SGER: Fire/Vegetation Interactions in the Dynamics of Chaparral Riparian Ecosystems

小行星9412224 在加州南部的查帕拉尔地区的河岸生态系统的结构和动态还没有任何详细的研究。 树木和木本灌木是这些生态系统中植物覆盖的主要组成部分，但也存在高度多样性的草本河岸物种。 最近在南加州发生的大面积火灾严重影响了这一地区的植被，既对植被和木质残体产生直接影响，也对泥石流和径流产生长期影响。 该建议调查了一系列假设，涉及查帕拉尔火灾：1）在木质残体的变化和随之而来的影响，对泥沙流; 2）死亡率的河岸树木; 3）幼苗建立河岸树木;和，4）养分流失和通过河岸系统的运动。

9412224 Rundel The structure and dynamics of riparian ecosystems in the chaparral region of Southern California have not been studied in any detail. Trees and woody shrubs are the dominant component of plant cover in these ecosystems, but a high diversity of herbaceous riparian species are also present. The recent extensive fires in Southern California heavily impacted this reparian zone over large areas, with both direct effects on plant cover and woody debris and longer term effects on debris flow and runoff. This proposal investigates a series of hypothesis relating chaparral fire to: 1) changes in woody debris and consequent impacts on sediment flow; 2) mortality of riparian trees; 3) seedling establishment for riparian trees; and, 4) nutrient loss and movement through riparian systems.