The State of BC’s Forests
Appendices
Glossary — PDF print version
Aboriginal rights arise from the prior occupation of land, but they also arise from the prior social organization and distinctive cultures of aboriginal peoples on that land. Treaty negotiations will translate aboriginal rights into contemporary terms. (MARR, Glossary of Treaty-Related Terms. http://www.gov.bc.ca/arr/rpts/glossary/default.htm) |
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| Allowable annual cut (AAC) |
The rate of timber harvest permitted each year from a specified area of land.
AACs for timber supply areas (TSAs) and tree farm licences (TFLs), which
account for most of the provincial harvest, are set by the government’s
chief forester in accordance with the Forest Act. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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| At risk |
A wildlife species is deemed “at risk” when an evaluation shows some
likelihood of extinction or extirpation given the current circumstances. (Adapted from COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
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| Backlog planting |
Planting that is overdue. In general, planting is considered backlog planting
if more than 7 years have elapsed since a site was cleared (by harvesting,
fire, insects or disease) in the Interior, and more than 3 years have
elapsed on the Coast of British Columbia. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) Current operational use of the term “backlog” or “backlog planting” is usually restricted to areas harvested before 1988 that are of Good or Medium site productivity. This is based on the Forest Practices Code of British Columbia Act of 1995, which re-defined a backlog area as “an area from which the timber was harvested, damaged or destroyed before October 1, 1987; and, which in the district manager’s opinion, is insufficiently stocked with healthy, well-spaced trees of a commercially acceptable species.” |
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| Biogeoclimatic zone |
A geographic area having similar patterns of energy flow, vegetation and soils
as a result of a broadly homogenous macroclimate. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) British Columbia’s low-elevation biogeoclimatic zones are:
The high-elevation zones are:
Descriptions of each zone are at http://www.for.gov.bc.ca/hre/becweb/resources/classificationreports/provincial/index.html An interactive map showing all zones is at http://www.for.gov.bc.ca/hfd/library/documents/treebook/biogeo/biogeo.htm |
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| Biomass |
The total mass of living organisms in a given area or volume. Forest biomass
consists primarily of above-ground and below-ground tree components (stems,
branches, leaves, and roots); other woody vegetation; and mosses, lichens, and
herbs. Animal biomass typically comprises only a very small portion of total
forest biomass. (Canadian Forest Service. Carbon Budget Model of the Canadian Forest Sector. http://carbon.cfs.nrcan.gc.ca/cbm/index_e.html) |
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| Broadleaved |
All trees classified botanically as Angiospermae. Also called “hardwoods”.
Forest areas are classified as broadleaved if trees accounting for more than 75%
of the tree volume (or number of stems in young forest) are broadleaved. (Adapted from the definition used for temperate and boreal forest in: United Nations. 2001. The Global Forest Resources Assessment 2000. http://www.fao.org/docrep/004/y1997e/y1997e1m.htm#bm58) |
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| Brushing |
A silvicultural activity done by chemical, manual, grazing, or mechanical means
to control competing forest vegetation and reduce competition for space, light,
moisture, and nutrients with crop trees or seedlings. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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| Clearcutting |
The process of removing all trees, large and small, in a stand in one cutting
operation. As a silvicultural system, clearcutting removes an entire stand of trees from an area of one hectare or more, and greater that two tree heights in width, in a single harvesting operation. A new even-aged stand is obtained by planting, natural or advanced regeneration or direct seeding. The opening size and dimensions created are generally large enough to limit significant microclimatic influence from the surrounding stand. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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| Clearcutting with reserves |
A variation of the clearcutting silvicultural system in which trees are
retained, either uniformly or in small groups, for purposes other than
regeneration. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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| Coarse woody debris |
Sound and rotting logs and stumps that provide habitat for plants, animals, and
insects and a source of nutrients for soil development. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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| Community forest |
Specifically, a “community forest agreement” is a tenure agreement under the
Forest Act that describes an area of Crown forest land to be managed by a
community, under general supervision of the Forest Service, for a sustainable
timber harvest as determined by an allowable annual cut. More generally, community forest may refer to any forestry operation managed by a local government, community group or First Nation for the benefit of the entire community. The majority of community forests in B.C. are on Crown land under a timber tenure such as a forest licence, tree farm licence or community forest agreement. (Adapted from MFR, Community Forests. http://www.for.gov.bc.ca/hth/community/) |
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| Coniferous |
All trees classified botanically as Gymnospermae. Also called “softwoods”.
Forest areas are classified as coniferous if trees accounting for more than 75%
of the tree volume (or number of stems in young forest) are coniferous. (Adapted from the definition used for temperate and boreal forest in: United Nations. 2001. The Global Forest Resources Assessment 2000. http://www.fao.org/docrep/004/y1997e/y1997e1m.htm#bm58) |
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| Criterion |
A category of conditions or processes by which sustainable forest management may
be assessed. A criterion is characterized by a set of related indicators that
are monitored periodically to assess change. (The Montréal Process. http://www.mpci.org/rep-pub/1995/santiago_e.html#2) |
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| Dead organic matter (DOM) |
A generic term for all dead organic compounds in the ecosystem. These include
standing dead trees, downed trees, coarse and fine woody debris, litter, soil
carbon, and peat. (Canadian Forest Service. Carbon Budget Model of the Canadian Forest Sector. http://carbon.cfs.nrcan.gc.ca/cbm/index_e.html) |
| Direct employment | Jobs in a particular industry of interest, such as the forest industry or the ranching industry. |
| Ecoregion | Major ecosystem, resulting from large-scale predictable patterns of solar
radiation and moisture, which in turn affect the kinds of local ecosystems and
animals and plants found there. (Bailey, R.G. 1998. Ecoregions: the ecosystem geography of the oceans and continents. Springer-Verlag: New York) In British Columbia, ecoregion is defined differently, and used with the term ecosection: An ecoregion is an area with major physiographic and minor macroclimatic or oceanographic variation. There are 43 ecoregions in British Columbia of which 39 are terrestrial. Ecoregions are meant to be mapped at 1:500,000 for regional strategic planning. (MoE, Ecoregions of British Columbia. http://www.env.gov.bc.ca/ecology/ecoregions/index.html) |
| Ecosection | Ecosections are terrestrial or marine areas that are subdivisions of ecoregions,
with minor physiographic and macroclimatic or oceanographic variations. The more
than 100 ecosections in British Columbia are mapped at 1:250,000 and used for
resource emphasis planning. (Adapted from MoE, Ecoregions of British Columbia. http://www.env.gov.bc.ca/ecology/ecoregions/index.html) |
| Ecosystem | A functional unit consisting of all the living organisms (plants, animals, and
microbes) in a given area, and all the non-living physical and chemical factors
of their environment, linked together through nutrient cycling and energy flow.
An ecosystem can be of any size – a log, pond, field, forest, or the earth’s
biosphere – but it always functions as a whole unit. Ecosystems are commonly
described according to the major type of vegetation, for example, forest
ecosystem, old-growth ecosystem, or range ecosystem. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Effective population size | The size of an ideal population, which when contrasted to the population under
study, would possess the same rate of increase in inbreeding, or decrease in
genetic diversity due to genetic drift. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Endangered | A wildlife species facing imminent extirpation or extinction. (COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
| Ex situ | Transfer of organisms (plant or animal) from one site (e.g., in the wild) to
another site (e.g., seed banks, zoos), for the purpose of maintenance or breeding
as a means of conserving the organism. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Extinct | A wildlife species that no longer exists. (COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
| Extirpated | A wildlife species no longer existing in the wild in B.C.,
but occurring elsewhere. (Adapted from COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
| Fertilizing | The addition of fertilizer to promote tree growth on sites deficient in one or
more soil nutrients. Also used to improve the vigor of crop trees following
juvenile spacing or commercial thinning. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| First Nation |
(MARR, Glossary of Treaty-Related Terms. http://www.gov.bc.ca/tno/rpts/glossary/default.htm) |
| Forest Forest land Forest cover |
Forest refers to one or both of land (forest land) and its associated plant
community (forest cover), where the land area exceeds 0.5 ha and 10% of the land
area is covered by the crowns of trees able to reach a height of 5 m at
maturity. Land that temporarily does not meet these criteria, due to human
intervention or natural causes, is considered forest if it is expected to revert
to forest.
(Adapted from the definition used for temperate and boreal forest in: United Nations. 2001. The Global Forest Resources Assessment 2000. http://www.fao.org/docrep/004/y1997e/y1997e1m.htm#bm58) |
| Forest-associated | A forest-associated species has a measurable dependence on a forest ecosystem(s)
for any aspect of its life history, including indirect dependence, such as
consuming forest-based or forest-derived resources. A forest-associated species
may be:
(Adapted from a workshop for the National Status 2005 report on criteria and indicators. Canadian Council of Forest Ministers. http://www.ccfm.org/) |
| Genetic diversity | Genetic diversity refers to differences at the gene level among individuals of the
same species. Genetic diversity can be observed at several levels, such as: 1.
differences between trees within a local area, and 2. differences between areas
or stands of trees across the species range. (Adapted from Genes Trees and Forests, Brochure 9. 1983. MFR, Research Branch. http://www.for.gov.bc.ca/hfd/pubs/Docs/Bro/Bro09.htm and Yanchuk, A.D., M. Carlson, and J. Woods. 1992. Genetic Diversity in Forest Management. Information Leaflet. B.C. Min. For., Res. Br., Victoria, B.C.) |
| Genetic gain | An improvement in the mean genotypic value of a selected character, obtained as
a result of breeding. The gain is the product of the degree of heritability and
the selection differential for that character. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Genetic resource archive | For genetic conservation: Ex-situ collections of germplasm. (The Forest Genetics Council of British Columbia, Glossary of Forest Genetics Terms. http://www.fgcouncil.bc.ca/index.html) |
| Greenhouse Gases | Greenhouse gases are those gaseous constituents of the
atmosphere, both natural and anthropogenic, that absorb and emit radiation
at specific wavelengths within the spectrum of infrared radiation emitted by
the Earth’s surface, the atmosphere, and clouds. This property causes the
greenhouse effect. Water vapour (H2O), carbon dioxide (CO2), nitrous oxide
(N2O), methane (CH4), and ozone (O3) are the primary greenhouse gases in the
Earth’s atmosphere. Moreover there are a number of entirely human-made
greenhouse gases in the atmosphere, such as the halocarbons and other
chlorine- and bromine-containing substances, dealt with under the Montréal
Protocol. Besides CO2, N2O, and CH4, the Kyoto Protocol deals with the
greenhouse gases sulfur hexafluoride (SF6), hydrofluorocarbons (HFCs), and
perfluorocarbons (PFCs). (Intergovernmental Panel on Climate Change Third Assessment Report, Glossary of Terms. http://www.ipcc.ch/pub/syrgloss.pdf) |
| Heterozygosity | An individual having two different alleles or forms of the same gene in all
diploid cells. Different alleles determine alternative characteristics of
inheritance, so an organism with different alleles in a pair of genes (e.g. Aa,
rather than the same alleles, AA or aa) can pass on either of the two genes (A
or a). Consequently, it may not always breed true to type and maintains higher
genetic diversity than an organism with the same alleles (Adapted from: Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Indicator | A quantitative or qualitative variable used to describe a state or condition.
When observed periodically, it shows a trend. It provides information that is
factual, usually for a specific time and place. (Adapted from: the definition used by The Montréal Process. http://www.mpci.org/rep-pub/1995/santiago_e.html#2) |
| Indirect employment | Jobs in other businesses or industries supplying goods and services to a selected industry that provides direct employment. Jobs providing goods and services to the direct employees and indirect employees, known as induced employment, are not included. For example, a sawmill providing direct employment in the forest industry also provides indirect employment to retailers, accountants and various trades for special jobs which the sawmill employees are not trained to handle, to produce the direct outputs of the sawmill. The directly and indirectly employed workers buy goods and services for their own use, creating induced employment. Induced employment is not included in indirect employment, to avoid double-counting. |
| In situ | Maintaining the genetic variability of a population in approximately the same
geographic and ecological conditions under which it evolved through on site
retention, with the use of artificial or natural regeneration. (Adapted from State University of New York College of Environmental Science and Forestry. Faculty of Forestry. Forest Genetics Glossary. http://www.esf.edu/for/maynard/GENE_GLOSSERY.html#Germplasm%20conservation and Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Interim measures agreements | These include Forest and Range Agreements and other similar agreements between
the Ministry of Forests and Range and eligible First Nations designed to provide
for "workable accommodation" of aboriginal interests that may be impacted by
forestry decisions during the term of the agreement, until such time as those
interests are resolved through treaty. These agreements provide the Ministry
with operational stability and assist First Nations to achieve their economic
objectives by providing revenue and direct award of timber tenure. (MFR, Aboriginal Affairs Branch. http://www.for.gov.bc.ca/haa/Docs/Public_Q&A_Oct27_2004.htm#general1) |
| IUCN categories of protected areas | The International Union for Conservation of Nature and Natural Resources (IUCN,
now known as The World Conservation Union) defines a protected area as “an area
of land and/or sea especially dedicated to the protection of biological
diversity, and of natural and associated cultural resources, and managed through
legal or other effective means.” It divides them into six categories, depending
on their objectives: Category I – Protected area managed mainly for science or wilderness protection
(Strict Nature Reserve/Wilderness Area); The categories reflect a gradient of management intervention. In Categories I–III, strict protection is the rule and natural processes are paramount, Category II and III sites combining this with facilities for visitors. In Category IV, in effect the managed nature reserve, the manager intervenes to conserve or if necessary restore species or habitats. Category V is about protecting cultural, lived-in landscapes, with farms and other forms of land-use. The new Category VI, the sustainable use reserve, is a protected area deliberately set up to allow use of natural resources, mainly for the benefit of local people. (IUCN. 2000. Protected areas: Benefits beyond boundaries – WCPA in action. http://www.iucn.org/themes/wcpa/pubs/other.htm#action) |
| Keystone species | Species that are dominant in function and possibly (but not necessarily) in
structure within any one ecosystem. They hold a crucial role in supporting the
integrity of the entire ecosystem, and therefore affect the survival and
abundance of many other species in the same ecosystem. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Large organic debris | Also called large woody debris. Entire trees, or large pieces of trees, found on
the forest floor or within stream channels. Large organic debris in stream
channels typically have a diameter greater than ten centimetres and longer than
one metre, and provide channel stability and/or create fish habitat diversity. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Managed forest land | Forest land that is being managed under a forest management plan utilizing the
science of forestry. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) In British Columbia, private land classified as “managed forest land” under the Assessment Act is given favourable tax treatment to encourage private landowners to manage their lands for long-term forest production. To maintain the classification, management of the land must meet the requirements under the Private Managed Forest Land Act. (Private Managed Forest Land Council, Managed Forest Program. http://www.pmflc.ca/program.html) |
| Merchantable | A tree or stand of trees is considered to be merchantable
once it has reached a size, quality, volume, or a combination of these that
permits harvesting and processing. Merchantability is independent of
economic factors, such as road accessibility or logging feasibility. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Mixed forest/other wooded land | Forest/other wooded land on which neither coniferous nor broadleaved trees
account for more than 75% of the tree volume (or number of stems in young
forest). (Adapted from the definition used for temperate and boreal forest in: United Nations. 2001. The Global Forest Resources Assessment 2000. http://www.fao.org/docrep/004/y1997e/y1997e1m.htm#bm58) |
| Natural disturbance | A change in forest structure and composition caused by fire, insects, wind,
landslides and other natural processes. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Natural regeneration | The renewal of a forest stand by natural seeding (on-site or from adjacent
stands; seeds may be deposited by wind, birds or mammals), sprouting, suckering,
or layering. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Non-timber forest products | Botanical and mycological products and associated services of the forest other
than timber, pulpwood, shakes or other wood products. Examples include wild
mushrooms, floral greenery, craft products, herbs, ethnobotanical teaching and
forest tourism. (Royal Roads University, Centre for Non-Timber Resources, 2006. http://www.royalroads.ca/programs/faculties-schools-centres/non-timber-resources/ntfp/) |
| Not satisfactorily restocked | Productive forest land that has been denuded and has failed, partially or
completely, to regenerate either naturally or by planting or seeding to the
specified or desired free growing standards for the site. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Old growth | Old growth is a forest that contains live and dead trees of various sizes,
species, composition, and age class structure. Old-growth forests, as part of a
slowly changing but dynamic ecosystem, include climax forests but not sub-climax
or mid-seral forests. The age and structure of old growth varies significantly
by forest type and from one biogeoclimatic zone to another. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) The following working definition based on location, species and age information available from forest cover inventories is used for quantitative analysis in this and other publications:
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| Other wooded land | Land with tree crown cover of 5–10% of trees able to reach a height of 5 m at
maturity, or with tree crown cover of more than 10% of trees not able to reach a
height of 5 m at maturity and shrub or bush cover. (Adapted from the definition used for temperate and boreal forest in: United Nations. 2001. The Global Forest Resources Assessment 2000. http://www.fao.org/docrep/004/y1997e/y1997e1m.htm#bm58) |
| Partial cutting | Refers generically to stand entries, under any of the several silvicultural
systems, to cut selected trees and leave desirable trees for various stand
objectives. Partial cutting includes harvest methods used for seed tree,
shelterwood, selection, and clearcutting with reserves systems. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Planting | Establishing a forest by setting out seedlings, transplants or cuttings in an
area. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Predominant species | Tree species or species group with the greatest volume per hectare (or number of stems in young forests). |
| Protected area | The protected areas network of British Columbia includes national and provincial
parks, ecological reserves and other areas designated by statute to protect
natural and cultural heritage. Proposed protection areas identified in the
preliminary land use plan for the Central Coast are also included. Regional
parks, municipal parks, wildlife management areas and private conservation lands
are not included. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Provenance | The geographical area and environment to which the parent trees and associated
vegetation are native, and within which their genetic constitution has been
developed through natural selection. (Adapted from MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Provincial forest | Forest land designated under Section 4 of the Forest Act. The Lieutenant
Governor in Council may designate any forest land as a provincial forest. The
uses of provincial forests include timber production, forage production, forest
recreation, and water, fisheries and wildlife resource purposes. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Pruning | The manual removal, close to or flush with the stem, of side branches, live or
dead, and of multiple leaders from standing, generally plantation-grown trees.
Pruning is carried out to improve the market value of the final wood product by
producing knot-free wood for the improvement of the tree or its timber. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Ranking |
Ranking is the process of assigning a risk of extinction “score” (i.e., rank) to each species. The purpose is to identify species most at risk, as well as to establish baseline ranks for each. (MoE, Species Ranking in British Columbia. http://wlapwww.gov.bc.ca/wld/documents/ranking.pdf) In British
Columbia, the Conservation Data Centre ranks species into three lists: |
| Resilience | The ability of an ecosystem to recover and maintain the desired condition of
diversity, integrity, and ecological processes following disturbances. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Riparian area | An area of land adjacent to a stream, river, lake or wetland that contains
vegetation that, due to the presence of water, is distinctly different from the
vegetation of adjacent upland areas. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Second-growth forest | Relatively young forests that have developed following a disturbance (e.g.,
wholesale cutting, extensive fire, insect attack) of the previous stand of
old-growth forest. Restricted in application to those parts of the world where
clearly discernible, old-growth forests still exist or did exist not long ago. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Seed planning unit (SPU) | Seed planning units are geographically distinct areas that form the basis for
gene resource management, including: tree improvement (breeding, orchard crop
production), seed transfer (areas of use), monitoring and gene conservation.
SPUs are based on species, ecological zone, elevation and, in some cases,
latitude band. (Adapted from MFR, Tree Improvement Branch. http://www.for.gov.bc.ca/hti/speciesplan/index.htm) |
| Select seed | Seed that exhibits a higher level of one or more desired genetic traits (such as growth rate, form, wood density, and resistance to insects and disease) than wild seed collected from an average natural stand. This includes seed from tested parents growing in seed orchards and seed collected from natural stand superior provenances. Vegetative material for propagation, from production facilities using tested parents and from superior provenances, is included in the term select seed. |
| Silvicultural system | A planned program of treatments throughout the life of the stand to achieve
stand structural objectives based on integrated resource management goals. A
silvicultural system includes harvesting, regeneration and stand-tending methods
or phases. It covers all activities for the entire length of a rotation or
cutting cycle. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Silviculture | The art and science of controlling the establishment, growth, composition,
health and quality of forests and woodlands. Silviculture entails the
manipulation of forest and woodland vegetation in stands and on landscapes to
meet the diverse needs and values of landowners and society on a sustainable
basis. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Site preparation | Any action, related to reforestation, to create an environment favourable for
survival of suitable trees during the first growing season. It may alter the
ground cover, soil or microsite conditions, using biological, mechanical, or
manual clearing, prescribed burns, herbicides, or a combination of methods. Both
natural regeneration and planting may be improved through site preparation. (Adapted from Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Spacing | The removal of undesirable trees within a young stand to
control stocking, to maintain or improve growth, to increase wood quality
and value, or to achieve other resource management objectives. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Special management zones | A land use designation used to identify areas where enhanced
levels of management are required to address sensitive values such as fish
and wildlife habitat, visual quality, recreation and cultural heritage
features, etc. The management intent is to maintain or enhance these values
while allowing compatible human use and development.
(Adapted from the Glossary definition for “special management area” in the
Ft. St. John Land and Resource Management Plan. |
| Species |
A singular or plural term for a population or series of populations of organisms that are capable of interbreeding freely with each other but not with members of other species. Includes a number of cases:
(MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/)
The species counts in the Species diversity indicator are for naturally
occurring species and subspecies found in B.C. or now presumed extirpated in
B.C. Extinct species are counted separately. Distinct populations are not
counted as separate species. The species counts are generally consistent
with COSEWIC’s use of the term “wildlife species”, limited to B.C.: (COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
| Species diversity | An assessment of the number of species present, their
relative abundance in an area, and the distribution of individuals among the
species. (Adapted from Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Stand | A community of trees sufficiently uniform in species
composition, age, arrangement, and condition to be distinguishable as a
group from the forest or other growth on the adjoining area, and thus
forming a silvicultural or management entity. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Tenure | The relationships established among humans regarding their
various rights to own, use, and control land, or the resources on that land. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) The holding, particularly as to manner or term (i.e., period of time), of a property. Land tenure may be broadly categorized into private lands, federal lands, and provincial Crown lands. The Forest Act defines a number of forestry tenures by which the cutting of timber and other user rights to provincial Crown land are assigned. (MFR Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Terrestrial vertebrate | A member of the subphylum Vertebrata, a primary division of the phylum Chordata
that includes fishes, amphibians, reptiles, birds, and mammals, all of which are
characterized by a segmented spinal column and a distinct well-differentiated
head, whose primary habitat for growth, reproduction, and survival is on or in
the land. (Adapted from “Terrestrial” in: Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Threatened | A wildlife species likely to become endangered if limiting factors are not
reversed. (COSEWIC. http://www.cosewic.gc.ca/eng/sct0/assessment_process_e.cfm#tbl5) |
| Timber Harvest Land Base (THLB) | The portion of the total area of a management unit considered to contribute to,
and be available for, long-term timber supply. The harvesting land base is
defined by reducing the total land base
according to specified management assumptions. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Timber supply area (TSA) | An area of public (provincial Crown) land designated under the
Forest Act that
is managed for sustainable timber harvest, as determined by an allowable cut. TSAs were originally defined by an established pattern of wood flow from
management units to the primary timber-using industries. (Adapted from MFR, Annual report 2003/04.
http://www.for.gov.bc.ca/hfd/pubs/docs/mr/annual/ar_2003-04/for.pdf and |
| Traditional ecological knowledge | Indigenous peoples’ knowledge of their environment, its processes, and
interrelationships. (Clayoquot Sound Scientific Panel. 1995. Report 3: First Nations’ Perspectives Relating to Forest Practices Standards in Clayoquot Sound. p. 11) |
| Traditional use | A use of land or water that is associated with the beliefs, customs and
practices passed down through the generations of a community of indigenous
people. Traditional use is usually identified with a site. The site may lack
physical evidence of human-made artefacts or structures, yet maintain cultural
significance to a living community of people, for example:
(Adapted from Ministry of Forests.1996. Traditional Use Study Program: Funding Proposal Instructions.) |
| Tree farm licence (TFL) | An agreement under the Forest Act that describes an area to be managed, under
general supervision of the Forest Service, for a sustainable timber harvest as
determined by an allowable annual cut. TFLs typically combine public (provincial
Crown) land with private land and timber licences. A TFL has a term of 25 years. (Adapted from: MFR Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Variable retention | A relatively new silvicultural system that follows nature's model by always
retaining part of the forest after harvesting. Standing trees are left in a
dispersed or aggregated form to meet objectives such as retaining old growth
structure, habitat protection and visual quality. Variable retention retains
structural features (snags, large woody debris, live trees of varying sizes and
canopy levels) as habitat for a host of forest organisms. There are two types of
variable retention:
The main objectives of variable retention are to retain the natural range of stand and forest structure and forest functions. With retention systems, forest areas to be retained are determined before deciding which areas will be cut. This system offers a range of retention levels. The system also provides for permanent retention of trees and other structures after regeneration is established. Variable retention can be implemented with a range of harvesting systems and can be combined with traditional silvicultural systems such as shelterwood or selection. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Vascular plant | Plants having well-developed vascular components (xylem and phloem) capable of
transporting water, sugars, nutrients, and minerals between the absorbing tissue
in the roots and the photosynthesizing tissue in the leaves. (Dunster, Julian A. 1996. Dictionary of natural resource management. UBC Press: Vancouver) |
| Wildlife tree | A tree or group of trees that are identified in an operational plan to provide
present or future wildlife habitat. A wildlife tree is a standing live or dead
tree with special characteristics that provide valuable habitat for the
conservation or enhancement of wildlife. Characteristics include large diameter
and height for the site, current use by wildlife, declining or dead condition,
value as a species, valuable location and relative scarcity. (MFR, Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
| Woodlot licence | An agreement under the Forest Act that describes an area to be managed, under
general supervision of the Forest Service, for a sustainable timber harvest as
determined by an allowable annual cut. It is similar to a tree farm licence, but
on a smaller scale, and typically combines public (provincial Crown) land with
private land. A woodlot licence has a term not exceeding 20 years. (Adapted from: MFR Glossary of Forestry Terms. http://www.for.gov.bc.ca/hfd/library/documents/glossary/) |
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