The Okanagan Desert is the common name for a semi-arid shrubland located in the southern region of the

Okanagan Valley The Okanagan ( ), also known as the Okanagan Valley and sometimes as the Okanagan Country, is a region in the Canadian province of British Columbia defined by the basin of Okanagan Lake and the Canadian portion of the Okanagan River. It is part ...

in British Columbia and

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

. It is centred around the city of

Osoyoos Osoyoos (, ) is the southernmost town in the Okanagan Valley in British Columbia between Penticton and Omak. The town is north of the United States border with Washington state and is adjacent to the Osoyoos Indian reserve. The origin of the na ...

and is the only semi-arid shrubland in Canada. Part of this ecosystem is referred to as the Nk'mip Desert by the

Osoyoos Indian Band The Osoyoos Indian Band is a First Nations government in the Canadian province of British Columbia, located in the town of Oliver and Osoyoos in the Okanagan valley, approximately four kilometres (2½ miles) north of the Canada–United States bo ...

, though it is identical to the shrublands elsewhere in the region. To the northwest of this area lies an arid shrubland near Kamloops.

Ecology

The Okanagan shrub-steppe is defined by the presence of an antelope-brush ecosystem containing several species of flora and fauna found nowhere else in Canada. The South Okanagan shrub-steppe ecosystem is a habitat for 30% of the

Red-listed The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biologi ...

and 46% of the

Blue-listed Blue-listed species are species that belong to the Blue List and includes any indigenous species or subspecies (taxa) considered to be vulnerable in their locale in order to provide early warning to federal and regional governments. Vulnerable taxa ...

vertebrates in British Columbia, with several listed as

threatened Threatened species are any species (including animals, plants and fungi) which are vulnerable to endangerment in the near future. Species that are threatened are sometimes characterised by the population dynamics measure of ''critical depensat ...

endangered An endangered species is a species that is very likely to become extinct in the near future, either worldwide or in a particular political jurisdiction. Endangered species may be at risk due to factors such as habitat loss, poaching and inva ...

. More than 24 invertebrates exist only in the Okanagan Desert, with an additional 80 species occurring nowhere else in Canada.Dyer, Orville. 2002. List of Species at Risk: South Okanagan-Similkameen Conservation Program Study Area updated to May 2002. Ministry of Water, Land and Air Protection, Penticton, British Columbia. According to the

Commission for Environmental Cooperation The Commission for Environmental Cooperation (CEC; es, Comisión para la Cooperación Ambiental; french: Commission de coopération environnementale) was established by Canada, Mexico, and the United States to implement the North American Agree ...

(CEC), this region lies within the northern reach of the Columbia Plateau ecoregion (10.1.2). It is defined by a dry

semi-arid climate A semi-arid climate, semi-desert climate, or steppe climate is a dry climate sub-type. It is located on regions that receive precipitation below potential evapotranspiration, but not as low as a desert climate. There are different kinds of semi-ar ...

and an ecosystem of mixed

shrublands Spring Park is a small area in London, England. It is within the London Borough of Bromley and the London Borough of Croydon, straddling the traditional Kent-Surrey border along The Beck. Spring Park is located north of Addington, west of West ...

and

grasslands A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natural ...

largely devoid of trees. Heading north, ecoregion gradually transitions into the Thompson-Okanagan Plateau ecoregion (10.1.1) around the shores of

Skaha Lake Skaha Lake is a freshwater lake, through which the Okanagan River flows, in the Okanagan region of south central British Columbia. Along the shoreline are Penticton (north), Kaleden (west), and Okanagan Falls (south). Name origin The lake was labe ...

. Using ecoregions defined by the

World Wide Fund for Nature The World Wide Fund for Nature Inc. (WWF) is an international non-governmental organization founded in 1961 that works in the field of wilderness preservation and the reduction of human impact on the environment. It was formerly named the Wor ...

(WWF), this region lies within the northern reach of the

Okanagan dry forests Okanagan dry forests is a temperate coniferous forest ecoregion in the Pacific Northwest of North America, as defined by the World Wildlife Fund (WWF) categorization system. It is closely associated with the Okanagan region of British Columbia and ...

ecoregion, which is defined almost identically to that of the CEC's Columbia Plateau ecoregion in terms of climate and defining vegetation.

Flora

The Okanagan shrub-steppe is dominated by antelope brush and common rabbitbrush interspersed with a variety of flowering plant species. These include

arrowleaf balsamroot ''Balsamorhiza sagittata'' is a North American species of flowering plant in the tribe Heliantheae of the family Asteraceae known by the common name Arrowleaf Balsamroot. It is widespread across western Canada and much of the western United Stat ...

bitterroot Bitterroot (''Lewisia rediviva'') is a small perennial herb in the family Montiaceae. Its specific epithet ("revived, reborn") refers to its ability to regenerate from dry and seemingly dead roots. The genus ''Lewisia'' was moved in 2009 fro ...

, brittle pricklypear, sagebrush buttercup, and sagebrush mariposa lily.

Fauna

As of 2009, 23 species were Red-listed (threatened or

extirpated Local extinction, also known as extirpation, refers to a species (or other taxon) of plant or animal that ceases to exist in a chosen geographic area of study, though it still exists elsewhere. Local extinctions are contrasted with global extinct ...

) in the South Okanagan shrub-steppe ecosystem, including: *

burrowing owl The burrowing owl (''Athene cunicularia''), also called the shoco, is a small, long-legged owl found throughout open landscapes of North and South America. Burrowing owls can be found in grasslands, rangelands, agricultural areas, deserts, or an ...

western screech owl The western screech owl (''Megascops kennicottii'') is a small owl native to North and Central America, closely related to the eastern screech owl. The scientific name commemorates the American naturalist Robert Kennicott. Description Length a ...

peregrine falcon The peregrine falcon (''Falco peregrinus''), also known as the peregrine, and historically as the duck hawk in North America, is a Cosmopolitan distribution, cosmopolitan bird of prey (Bird of prey, raptor) in the family (biology), family Falco ...

sage grouse Sage-grouse are grouse belonging to the bird genus ''Centrocercus.'' The genus includes two species: the Gunnison grouse (''Centrocercus minimus'') and the greater sage-grouse (''Centrocercus urophasianus''). These birds are distributed through ...

sage thrasher The sage thrasher (''Oreoscoptes montanus'') is a medium-sized passerine bird from the family Mimidae, which also includes mockingbirds, tremblers, and New World catbirds. It is the only member of the genus ''Oreoscoptes''. This seems less close ...

* pallid bat *

western red bat The western red bat or desert red bat (''Lasiurus frantzii'') is a species of microbat in the family Vespertilionidae. It is found in western North America and Central America. Taxonomy Previously, it was believed to be a subspecies of the ...

badger Badgers are short-legged omnivores in the family Mustelidae (which also includes the otters, wolverines, martens, minks, polecats, weasels, and ferrets). Badgers are a polyphyletic rather than a natural taxonomic grouping, being united b ...

tiger salamander The tiger salamander (''Ambystoma tigrinum'') is a species of mole salamander and one of the largest terrestrial salamanders in North America. Description These salamanders usually grow to a length of with a lifespan of around 12–15 years. ...

* western ridge mussel *

northern leopard frog ''Lithobates pipiens''Integrated Taxonomic Information System nternet2012''Lithobates pipiens'' pdated 2012 Sept; cited 2012 Dec 26Available from: www.itis.gov/ or ''Rana pipiens'', commonly known as the northern leopard frog, is a species of le ...

Threats and preservation

Over the early 21st century, many fruit-tree orchards were converted to

irrigated Irrigation (also referred to as watering) is the practice of applying controlled amounts of water to land to help grow crops, landscape plants, and lawns. Irrigation has been a key aspect of agriculture for over 5,000 years and has been devel ...

vineyard A vineyard (; also ) is a plantation of grape-bearing vines, grown mainly for winemaking, but also raisins, table grapes and non-alcoholic grape juice. The science, practice and study of vineyard production is known as viticulture. Vineyards ...

Local organizations

There are multiple groups or organizations located in the Okanagan Desert. The Osoyoos Band, a

First Nations First Nations or first peoples may refer to: * Indigenous peoples, for ethnic groups who are the earliest known inhabitants of an area. Indigenous groups *First Nations is commonly used to describe some Indigenous groups including: **First Natio ...

government located in British Columbia, runs the

Nk'Mip Desert Cultural Centre The Nk'Mip Desert Culture Centre (Okanagan ; conventional English pronunciation respelling "in-ka-meep") is an interpretive centre in Osoyoos, British Columbia, Canada, It is owned and operated by the Osoyoos Indian Band and is approximately nor ...

as part of its resort and winery complex, which is located on the east side of

. The Osoyoos Desert Society, a non-profit society founded in 1991, maintains the Osoyoos Desert Centre, a 67-acre nature interpretive facility north of Osoyoos off

Highway 97 Route 97, or Highway 97, may refer to: Australia - Olympic Dam Highway, South Australia Canada * British Columbia Highway 97 ** British Columbia Highway 97A ** British Columbia Highway 97B ** British Columbia Highway 97C ** British Columb ...

. The Osoyoos Lake Water Quality Society – which focuses on the impact and relationship of the South Okanagan shrub-steppe ecosystem with

Osoyoos Lake Osoyoos Lake is a lake located in British Columbia, Canada, and Washington state of the United States. Osoyoos is derived from the word ''sẁiẁs'' meaning "narrowing of the waters" in the local Okanagan language (Syilx'tsn). Located on the lak ...

– is a community public relations organization.

Proposed national park

This region is the site of the proposed

South Okanagan—Similkameen National Park Reserve South Okanagan—Similkameen National Park Reserve is a proposed national park reserve located in the Regional District of Okanagan-Similkameen of British Columbia. The goal of the park is to work with the local First Nations to protect a large p ...

Media

The region was the subject of a 1999

National Film Board of Canada The National Film Board of Canada (NFB; french: Office national du film du Canada (ONF)) is Canada's public film and digital media producer and distributor. An agency of the Government of Canada, the NFB produces and distributes documentary f ...

documentary ''Pocket Desert – Confessions of a Snake Killer''.

References

{{reflist

External links

Nk'mip Desert Cultural CentreOsoyoos Desert SocietyOsoyoos Lake Water Quality Society
Tourist attractions in the Okanagan Geography of British Columbia