|Scientific Name:||Chamaecyparis lawsoniana|
|Species Authority:||(A.Murray bis) Parl.|
|Red List Category & Criteria:||Vulnerable A1de+2e ver 2.3|
|Assessor/s:||Conifer Specialist Group|
|Range Description:||Natural populations of Port Orford Cedar are confined to the coastal ranges of southwestern Oregon and northwestern California, between Coos Bay in the north and the Mad River in the south. Isolated subpopulations occur near Mount Shasta and the Trinity Mountains in northern California. Occurs at elevations from 0 to 1,500 m.|
Native:United States (California, Oregon)
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Occurs in the greatest abundance within about 64 km of the Pacific coast. Further inland, its distribution is patchy, and it is mostly limited to sites with sufficient soil moisture.|
|Habitat and Ecology:||Grows in coniferous forest in coastal mountain valleys, often along streams.|
|Major Threat(s):||International trade in the timber has put enormous pressure on the remaining old growth stands. The spread of the introduced pathogen Phytophthora lateralis continues at a rapid rate and prevents successful regeneration in many areas, especially those accessible by road.|
The Bureau of Land Management (BLM) and the United States Forest Service (USFS) try to prevent the spread of Phytophthora through the use of road closures, monitoring, research and education.
Research is required on the dynamics and mechanisms by which Phytophthora is spread. In additions attempts to breed resistant trees are required.
|Citation:||Conifer Specialist Group 2000. Chamaecyparis lawsoniana. In: IUCN 2012. IUCN Red List of Threatened Species. Version 2012.2. <www.iucnredlist.org>. Downloaded on 19 May 2013.|
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