Fire, floods and woody debris: Interactions between biotic and geomorphic processes

摘要: Fire and floods interact in the riparian zone as processes that structure plant communities landforms. Although much of immediate impact fire is on vegetation, fire-related changes runoff, sediment supply, woody debris volume have ongoing geomorphic impacts valley floor. Consequent hydrogeomorphic changes, turn, affect composition distribution vegetation. This paper reviews these interactions, provides an example how fires intersect to supply burnt trees debris. Because temporal spatial initially controlled by patterns tree mortality, ecological disturbances, like fire, can be important source for pulses systems. To understand we examine inputs 3 years after a wildfire gallery forests western Transverse Ranges, California. Within our sample 339 burned stems, snags fell distinctive patterns: species were variable susceptibility falling, at greater rates sites with subsequent flooding. Discordance between fallen overall stems indicates variability forest must considered predicting post-disturbance Variation snagfall timing among suggests are likely occur multiple, sequential wildfire. The role flooding superimposed this influence, recruitment from created fire.