Angelo Coast Range Reserve

06 Dec, 03 AM - 06 Dec, 03 AM

Gravel bed streams with many bedrock intrusions have trees which established in the riparian zone in bands along points from the bank full flow to the height where the flood frequency and the maximum age of survivorship of tree are the same. The tree recruitment in narrow bands is represents the high water level of a particular flood and where the seeds were deposited by that flood. Tree establishment is dependent on the substrate and the dynamics of the substrate water content (water potential). The tree survival over longer time periods depend on the time between water level (flood) events at the level of their establishment and the ability of these water levels (floods) to break or uproot the trees. Thus the tree population dynamics of many gravel bed riparian streams depend on the hydraulics, fluvial geomorphology and weather (mostly precipitation events that affect runoff). White Alder is a common gravel bed river riparian tree in the Pacific Northwest of the US but has many characteristics of other riparian trees e.g. small seeds, wind and water dispersal, rapid growth after germination, high water demand throughout its life and shade intolerant. In this research program we will define the connection between alder population processes of dispersal, establishment, and survival with respect to hydraulics, hydrology and fluvial geomorphology. This research will take place in the Angelo Natural Reserve in the Eel River watershed of the coastal range of northern California.

Visit #19950 @Angelo Coast Range Reserve

Approved

Under Project # 20935 | Research

Eel River Alder Study: hydrological and geomorphic definitions of riparian tree population dynamics.

faculty - University of Calgary

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Group of 2 Faculty Dec 6, 2009 (1 days)

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