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Vegetation Classification System for California: user's guide
| Content Provider | Semantic Scholar |
|---|---|
| Author | Hunter, Serena C. Paysen, Timothy E. |
| Copyright Year | 1986 |
| Abstract | SERENA C. HUNTER was formerly a research forester, assigned to the Station's ecology of chaparral and associated ecosystems research unit at Riverside, California, when the Chaparral R&D Program was active. She holds degrees in forestry from the University of the South (bachelor's, 1974) and North Carolina State University (master's, 1977). TIMOTHY E. PAYSEN, a research forester, is assigned to the Station's prescribed fire research unit, with headquarters in Riverside, California. He earned a bachelor's degree in forest management at Humboldt State College (1969) and a doctorate in applied statistics at the University of California, Riverside (1978). GLOSSARY Biogeographic: Geographic distribution of an organism in relation to the mechanism or process that caused distribu tion. For example, disjunct populations of a conifer species on mountain tops may be the result of seed dispersal by animals followed by extreme geomorphic action and cli matic shifts (glaciation, then heating and drying). Broadleaf: Angiosperm: leaf that is not needlelike or scalelike. See Conifer. Canopy: Aggregate tree and shrub crowns forming a layer (often broken) of cover above ground. Chaparral: Shrubs with sclerophyllous (leathery, waxy skinned) evergreen leaves, generally adapted to Mediter ranean-type climate (hot, dry summers; wet winters). Often refers to a conglomerate of vegetation characterized by these shrubs, in the same sense as forest. Specific class in the Subformation category of the Classification System. Codominant: Plant species that shares stand dominance with another species in the overstory canopy or any subordinate layer. See Vegetation layer. Community: Assemblage of plants with a characteristic spe cies composition that occurs under uniform environmental conditions. Conifer: Cone-bearing tree with evergreen needle or scalelike leaves. Includes the genera Pinus (pine), Calocedrus (incense-cedar), Juniperus (juniper), and Cupressus (cy press). Crown cover: Vertical projection of a tree or shrub crown perimeter to the ground. Cryptogam: Primitive plant (moss, club moss, lichen, or fern) that lacks true flowers or seeds, and reproduces by spores. Cushion plant: Forms a low-growing mat of vegetation. Indi viduals spread at the outer edge, sometimes rooting at nodes or branch tips. Diameter at breast height (d.b.h.): Diameter of a tree trunk at 4.5 ft (1.37 m) above ground. Dominant: Plant in a vegetation unit that exerts a controlling influence on the environment by reason of size or numbers. For this publication, group of plants that provides more cover than others in a given layer of vegetation. Ecotone: Transition zone between two ecological units, most often characterized … |
| File Format | PDF HTM / HTML |
| DOI | 10.2737/psw-gtr-94 |
| Alternate Webpage(s) | http://www.fs.fed.us/psw/publications/documents/psw_gtr094/psw_gtr094.pdf |
| Alternate Webpage(s) | https://doi.org/10.2737/psw-gtr-94 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
