Biology:Willamette Valley ponderosa pine
| Biology:Willamette Valley ponderosa pine | |
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Scientific classification
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Gymnospermae |
| Division: | Pinophyta |
| Class: | Pinopsida |
| Order: | Pinales |
| Family: | Pinaceae |
| Genus: | Pinus |
| Species: | P. ponderosa |
The Willamette Valley ponderosa pine is a population of the ponderosa pine (Pinus ponderosa) native to the Willamette Valley in Oregon. It is adapted for Western Oregon's wet winter and dry summer.[citation needed]
History
The Willamette Valley ponderosa variant only grows on the valley floor, unlike the Douglas-fir, which grows on hillsides, and the wood is softer and easier to mill than the native hardwoods.[1] Because of this, when early settlers used wood from the trees to build homes and cleared land for agriculture, the population was "decimated".[1] Prior to restoration efforts, the pine survived only in scattered stands between Hillsboro and Cottage Grove.[1] The Lewis's woodpecker and the slender-billed nuthatch (a subspecies of the white-breasted nuthatch) nest in the tree and rely on it for food–their populations were reduced along with that of the pine.[1]
References
- ↑ 1.0 1.1 1.2 1.3 Ryan, Catherine (March 28, 2012). "Loggers Give Unique Oregon Ponderosa Pine a Lifeline". High Country News. http://www.hcn.org/issues/44.5/loggers-give-unique-oregon-ponderosa-pine-a-lifeline.
External links
- The Nature of Cedar Mill: Willamette Valley Ponderosa Pine
- "Ponderosa Returns to the Willamette Valley". OSU Extension Service. http://extension.oregonstate.edu/gardening/node/1080.
- Bark Beetles and Willamette Valley Ponderosa Pine: Populations, Geographical Distribution and Management Recommendations
- Willamette Valley Ponderosa Pine Conservation Association
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