Acer circinatum

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Acer circinatum, or vine maple, is a species of maple native to western North America. Vine maple typically grows as a low-elevation costal tree in temperate areas of high precipitation such as the west coast of Oregon and northern California, as well as the rain forests of Washington State and British Columbia. [1] Vine maples play an important role in conserving the biodiversity of lowland ecosystems by enriching upper soil layers and providing habitat for other organisms. [2] [3] [4]

Contents

Vine maple
Vine Maple leaves and flowers.jpg
Vine maple leaves and flowers
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Sapindales
Family: Sapindaceae
Genus: Acer
Section: Acer sect. Palmata
Series: Acer ser. Palmata
Species:
A. circinatum
Binomial name
Acer circinatum
Acer circinatum range map.png
Natural range
Synonyms [6]
  • Acer macouniiGreene
  • Acer modocenseGreene
  • Acer virgatumRaf.
An example of a vine maple with many stems growing from the root ball. Vine maples are epiphyte hotspots, as demonstrated by the moss-covered branches of this specimen. Moss Covered Vine Maple - Flickr - brewbooks (2).jpg
An example of a vine maple with many stems growing from the root ball. Vine maples are epiphyte hotspots, as demonstrated by the moss-covered branches of this specimen.

Description

Acer circinatum grows as a many-stemmed shrub-like tree. It most commonly reaches a height between 5 and 8 meters (16–26 feet), but can occasionally reach 18 meters (59 feet). [7] It commonly grows as a spray of slender stems from 3–10 cm (1–4 in), but in more tree-like specimens the trunk can reach 25 cm (10 in). [7] Shoots are slender with smooth, hairless bark. [8] [9]

Vine maple leaves are coarsely toothed and 3 to 14 cm (1 1/4 to 5 1/2 in) in length. They are palmately lobed with 7-11 lobes, the lobe-points forming a nearly circular pattern. In the autumn, the leaves turn bright yellow to orange red. Vine maples produce single flowers (a single flower is a flower that produces one fruit) that are 6–9 mm (1/4-3/8 in) in diameter, with dark red sepals and 5 yellow petals. The fruit, a two-seeded winged samara, is adapted for wind-dispersal. Each wing is 2–4 cm in length, and holds a seed approximately 9 mm (3/8 in) in diameter. [9]

Vine maple trees can grow by cloning, which happens when a new shoot develops from a root or branch of the tree. Occasionally, flexible vine maple branches will bend over and grow into the ground to form natural arch. [10] This cloning characteristic, known as layering, [10] [11] [12] [13] allows vine maple stands to grow quickly, and makes vine maple a good contender for secondary succession after a woodland overstory disturbance. [12]

Taxonomy

Acer circinatum is part of the Palmatum group of maple native to East Asia and North America with its closest relatives being Acer japonicum (fullmoon maple) [14] and Acer pseudosieboldianum (Korean maple). [15]

Distribution and habitat

Acer circinatum can be found from southwest British Columbia to northern California, usually within 300 km (186 mi) of the Pacific Ocean, specifically along the Columbia Gorge and throughout coastal forests. [8] [9] It is found no further inland than the east side of the Cascade Range. [7] Acer circinatum is most often found growing interspersed within conifer forests of Douglas fir ( Pseudotsuga menziesii ), Hemlock ( Tsuga heterophylla ), and Cedar ( Thuja plicata ). [8] [9] Vine maples are also known to occasionally establish small colonial gaps within conifer forests, where they proliferate after an overstory disturbance (such as the death of a large tree), and are able to maintain the gap by preventing the re-establishment of larger trees. [16] [17]

Ecology

Various birds, such as nuthatches, chickadees, grosbeaks, warblers, waxwings, vireos, and woodpeckers eat the seeds of this species, [3] [2] as well as mammals such as squirrels and chipmunks. [16] Deer and elk also browse the foliage, and beavers will eat the bark of young specimens. [16] Vine maples also host a variety of epiphytes (non parasitic organisms that grow on other organisms) such as mosses and lichens. [4] Though small compared to the conifer forests they inhabit, vine maples are a good contender for forest resources. Due to the speed at which they grow and spread, vine maples are able to establish and maintain dominance in natural forest clearings and quickly colonize new openings in the canopy caused by tree mortality. [17] Vine maples are an important member of the forest ecosystems of the Pacific Northwest because they cycle nutrients more quickly than conifers do, and therefore create thinner, more nutrient-rich forest floor layers that promote biodiversity. [17] Vine maples drop more leaf litter than conifers, and their leaves decompose faster, leading to higher concentrations of N, P Ca, Mg, K, Fe, and Zn near the surface of the forest floor. [17]

History

Acer circinatum likely entered western North America in the mid Pliocene (5.3-2.6 mya). [18] Despite its isolation from many of the Asian species with which it shares a common ancestor, Acer circinatum has not diverged significantly from its Asian relatives in either appearance or genetics. [14]

Cultivation

It is occasionally cultivated outside its native range as an ornamental tree, from Juneau, Alaska, [19] and Ottawa, Ontario, [20] to Huntsville, Alabama, [21] and also in northwestern Europe. [22]

Uses

The Quinault people used the shoots to weave baskets. [7]

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References

  1. ↑ "USDA Plants Database". plants.sc.egov.usda.gov. Retrieved December 2, 2023.
  2. 1 2 "Western Washington: Plants for Birds Vine Maple Acer circinatum" (PDF). Eastside Audubon. Retrieved November 19, 2023.
  3. 1 2 Whitney, Stephen (1985). Western Forests (The Audubon Society Nature Guides). New York: Knopf. p.  392. ISBN   0-394-73127-1.
  4. 1 2 Ruchty, Andrea; Rosso, Abbey L.; McCune, Bruce (June 2001). "Changes in Epiphyte Communities as the Shrub, Acer circinatum, Develops and Ages". The Bryologist. 104 (2): 274–281. doi:10.1639/0007-2745(2001)104[0274:CIECAT]2.0.CO;2. ISSN   0007-2745.
  5. ↑ Barstow, M.; Crowley, D.; Rivers, M.C. (2017). "Acer circinatum". IUCN Red List of Threatened Species . 2017: e.T193533A2242484. doi: 10.2305/IUCN.UK.2017-3.RLTS.T193533A2242484.en . Retrieved November 12, 2021.
  6. ↑ "Acer circinatum Pursh — The Plant List". www.theplantlist.org.
  7. 1 2 3 4 Arno, Stephen F.; Hammerly, Ramona P. (2020) [1977]. Northwest Trees: Identifying & Understanding the Region's Native Trees (field guide ed.). Seattle: Mountaineers Books. pp. 258–260. ISBN   978-1-68051-329-5. OCLC   1141235469.
  8. 1 2 3 Plants of British Columbia: Acer circinatum Archived 2011-06-12 at the Wayback Machine
  9. 1 2 3 4 Jepson Flora: Acer circinatum
  10. 1 2 "Acer circinatum". www.scientificlib.com. Retrieved November 16, 2023.
  11. ↑ Anderson, H. G. (January 1969). "Growth Form and Distribution of Vine Maple (Acer Cirinatum) on Marys Peak, Western Oregon". Ecology. 50 (1): 127–130. Bibcode:1969Ecol...50..127A. doi:10.2307/1934671. JSTOR   1934671.
  12. 1 2 O'Dea, Mary E. "The clonal development of vine maple during Douglas-fir stand development in the Coast Range of Oregon". ir.library.oregonstate.edu. Retrieved November 16, 2023.
  13. ↑ Ashley, A. & Ashley, P. (1990). The Canadian Plant Sourcebook. Cheriton Graphics, Ottawa, Ontario, Canada.
  14. 1 2 Li, Jianhua; Stukel, Mark; Bussies, Parker; Skinner, Kaleb; Lemmon, Alan R.; Lemmon, Emily Moriarty; Brown, Kenneth; Bekmetjev, Airat; Swenson, Nathan G. (November 2019). "Maple phylogeny and biogeography inferred from phylogenomic data". Journal of Systematics and Evolution. 57 (6): 594–606. doi: 10.1111/jse.12535 .
  15. ↑ Chang, C. S. (1991). A morphometric analyses of genus Acer L., section Palmata Pax, series Palmata. Korean Journal of Plant Taxonomy, Online PDF 21(3), 165-186. (accessed 12/2/2023)
  16. 1 2 3 "Vine Maple". www.sfu.ca. Retrieved November 20, 2023.
  17. 1 2 3 4 Ogden, A. E. (1996). Soil characteristics of persistent canopy openings occupied by vine maple in a coastal western hemlock forest.
  18. ↑ Chang, C. S. (1994). A systematic study of Acer, section Palmata, series Palmata and its implications of paleobotanical history in eastern Asia. Korean Journal of Plant Taxonomy, 24(3), 173-193.
  19. ↑ "Downtown Juneau Tree Guide" (PDF). Archived from the original (PDF) on August 18, 2007.
  20. ↑ Buckley, A. R. (1980). Trees and Shrubs of the Dominion Arboretum. Research Branch, Agriculture Canada, Ottawa.
  21. ↑ University of Alabama, Huntsville: Oregon Vine Maple at UAH Arboretum Archived February 24, 2007, at the Wayback Machine
  22. ↑ Rushforth, K. (1999). Trees of Britain and Europe. Collins ISBN   0-00-220013-9.
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