Umpqua Watersheds
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Glossary
Glossary Abbreviations

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

  Glossary   A  -  L    
Cable logging
Logging that involves the transport of logs from stump to collection points (landings) by means of suspended steel cables. Cable logging leaves compacted skidding scares forever on the landscape.
Canopy
The part of any stand of trees represented by the tree crowns. It usually refers to the uppermost layer of foliage, but it can be use to describe lower layers in a multi-storied forest.
Cavity
A hole in a tree often used by wildlife species, usually birds, for nesting, roosting, and reproduction.
Checkerboard Ownership
A land ownership pattern in which every other section (square mile) is in federal ownership as a result of federal land grants to early western railroad companies.
Chemical control
The use of pesticides and herbicides to control pests and plant species that invade an area as a result of clearcutting and other impactful management practices.
Clear cut
A harvest in which all or almost all of the trees are removed in one entry. Also called 'deforestation'. (See regeneration harvest.)
Climax
The culminating stage in plant succession for a given site. Most forests in the PNW are a Hemlock tree overstory climax forest, but because of natural fire, most forests are really a Douglas Fir overstory.
Coos Bay Wagon Road (CBWR) Lands
Public lands granted to the Southern Oregon Company and subsequently reconveyed to the United States.
Congressionally reserved area
These lands have been reserved by an act of Congress for specific land allocation purposes, such as wilderness areas, wildlife refuges, etc.
Conifer
A tree that produces cones, such as a pine, spruce, or fir tree. Most conifer trees are 'evergreen', but a few, such as Larch, are deciduous.
Connectivity (of habitats)
The linkage of similar but separated vegetation stands by corridors of like vegetation. We often use this term to see if old-growth forests are connected to each other, allowing larger species gene pools, or are fragmented into islands by clear cuts.
Connectivity/diversity blocks
A land designation of BLM matrix lands. (See General Forest Management Area.)
Consumptive use
Use of resources that reduces the supply, such as logging, mining and grazing.
Corridor
Elements of the landscape that connect similar areas, such as old-growth forests.
cover
Any feature that conceals wildlife or fish. Cover may be dead or live vegetation, boulders, or undercut streambanks. Animals use cover to escape from predators (including hunters), rest, or feed.
Cover forage ratio
The ratio of hiding cover to foraging areas for wildlife species.
Cover type (forest cover type)
Stands of a particular vegetation type that are composed of similar species. In the Umpqua, we often have a Hemlock or white fir cover type.
Created opening
The nice term used to described deforestation. USFS official definition: An opening in the forest cover created by the application of even-aged silvicultural practices. (See Clear cut.)
Critical habitat
Areas designated for the survival and recovery of federally listed threatened or endangered species.
Cruise
Estimating monetary value of a forest for subsequent auction to the timber industry.
Cubic Foot
A unit of solid wood, one foot square and one foot thick.
Cultural resource
The remains of sites, structures, or objects used by people in the past; this can be historical or pre-historic.
Cumulative effects
Effects on the environment that result from separate, individual actions that, collectively, become significant over time.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z