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CEGL003076 Pinus radiata Forest

Type Concept Sentence: No Data Available


Common (Translated Scientific) Name: Monterey Pine Forest

Colloquial Name: No Data Available

Hierarchy Level:  Association

Type Concept: This association is a forest dominated by Pinus radiata found on marine terraces and headlands of the Monterey Peninsula and vicinity in the zone of marine fog incursion. It is found from sea level to 305 m (1000 feet) elevation. Pinus radiata is the sole or dominant species in the canopy. Quercus agrifolia may be important. Stands are variable but may include Pinus muricata, Pseudotsuga menziesii, Pinus attenuata, Sequoia sempervirens, and Arbutus menziesii. Understories are quite variable, depending on substrate. The composition of the shrub layer varies with substrate, but common associates include Arctostaphylos tomentosa, Vaccinium ovatum, Toxicodendron diversilobum, Diplacus aurantiacus ssp. aurantiacus, and Symphoricarpos mollis.

Diagnostic Characteristics: No Data Available

Rationale for Nominal Species or Physiognomic Features: No Data Available

Classification Comments: No Data Available

Similar NVC Types: No Data Available
note: No Data Available

Physiognomy and Structure: No Data Available

Floristics: Vegetation is dominated by the needle-leaved evergreen tree Pinus radiata, with the broad-leaved evergreen tree Quercus agrifolia often present and important. Other conifers that may be present include Pinus muricata, Pinus attenuata and Pseudotsuga menziesii. The broad-leaved evergreen tree Arbutus menziesii is also occasional. The tree canopy is continuous to intermittent, and up to 30 m in height. In the understory, the presence and abundance of shrubs is dependent upon the age and canopy cover of the stand, and therefore ranges from an absence of shrubs to high cover. Common associates include Arctostaphylos tomentosa, Vaccinium ovatum, Toxicodendron diversilobum, Diplacus aurantiacus ssp. aurantiacus, and Symphoricarpos mollis. The herbaceous layer is also variable, from sparse to abundant.

Dynamics:  No Data Available

Environmental Description:  Stands are found along the central coast of California, at elevations ranging from sea level to 300 m. Annual precipitation is approximately 50 cm, with a distinct summer dry season. Temperatures are cool all year, with little fluctuation. All stands are well within the zone of coastal fogs, which contributes significant moisture in the form of fog drip from foliage. These stands are confined to within 8 km of the coast, on uplifted marine terraces and headlands, on all aspects. Parent materials vary but are derived primarily from shallow marine sediments. Soils are deep, excessively drained sandy loams.

Geographic Range: The natural range of this forest type is about 5400 hectares divided into three areas. Stands occur on the Monterey peninsula and in Santa Cruz and San Luis Obispo counties. The stand near Monterey is larger than the other two stands combined. Soils, fog and precipitation have been offered as explanations for the narrow and disjunct natural range of this forest. All stands are within 8 km of the coast.

Nations: MX?,US

States/Provinces:  CA, MXBCN?




Confidence Level: Low - Poorly Documented

Confidence Level Comments: No Data Available

Grank: G1

Greasons: No Data Available


Concept Lineage: No Data Available

Predecessors: No Data Available

Obsolete Names: No Data Available

Obsolete Parents: No Data Available

Synonomy: = Pinus radiata (Monterey pine forest) Alliance (Sawyer et al. 2009) [87.110.00]
= Pinus radiata Forest Alliance (Sawyer and Keeler-Wolf 1995)

Concept Author(s): Sawyer et al. (2009)

Author of Description: M.S. Reid and M. Schindel

Acknowledgements: No Data Available

Version Date: 06-11-08

  • Cheatham, N. H., and J. R. Haller. 1975. An annotated list of California habitat types. Unpublished report. University of California, Natural Land and Water Reserves System.
  • Griffin, J. R., and W. B. Critchfield. 1972. The distribution of forest trees in California. Research Paper PSW-82/1972. USDA Forest Service, Pacific Southwest Forest and Range Experiment Station, Berkeley, CA. 114 pp.
  • Grossman, D. H., K. Lemon Goodin, and C. L. Reuss, editors. 1994. Rare plant communities of the conterminous United States: An initial survey. The Nature Conservancy. Arlington, VA. 620 pp.
  • Jones and Stokes Association, Inc. 1996. Monterey Pine Forest Conservation Strategy report. Unpublished report on file at California Natural Diversity Database.
  • Sawyer, J. O., T. Keeler-Wolf, and J. Evens. 2009. A manual of California vegetation. Second edition. California Native Plant Society, Sacramento CA. 1300 pp.
  • Sawyer, J. O., and T. Keeler-Wolf. 1995. A manual of California vegetation. California Native Plant Society, Sacramento. 471 pp.
  • Vogl, R. J., W. P. Armstrong, K. L. White, and K. L. Cole. 1988. The closed-cone pines and cypresses. Pages 295-358 in: M. G. Barbour and J. Major, editors. 1988. Terrestrial vegetation of California: New expanded edition. California Native Plant Society, Special Publication 9, Sacramento. 1030 pp.
  • Western Ecology Working Group of NatureServe. No date. International Ecological Classification Standard: International Vegetation Classification. Terrestrial Vegetation. NatureServe, Boulder, CO.