| 词条 | Uniola paniculata |
| 释义 |
| name = Sea oats | image = Uniola paniculata (plume).jpg | regnum = Plantae | unranked_divisio = Angiosperms | unranked_classis = Monocots | unranked_ordo = Commelinids | ordo = Poales | familia = Poaceae | genus = Uniola | species = U. paniculata | binomial = Uniola paniculata | binomial_authority = L. }}Uniola paniculata or sea oats, also known as seaside oats, araña, and arroz de costa,[1] is a tall subtropical grass that is an important component of coastal sand dune and beach plant communities in the southeastern United States, eastern Mexico and some Caribbean islands. Its large seed heads that turn golden brown in late summer give the plant its common name. Its tall leaves trap wind-blown sand and promote sand dune growth, while its deep roots and extensive rhizomes act to stabilize them, so the plant helps protect beaches and property from damage due to high winds, storm surges and tides. It also provides food and habitat for birds, small animals and insects.[1] DescriptionUniola paniculata is a tall, erect perennial grass that can grow to {{convert|1|to|2|m|ft|abbr=on}} in height. Its long, thin leaves reach lengths of {{convert|20|to|40|cm|in|round=0.5|abbr=on}} and are about {{convert|0.6|cm|in|abbr=on}} in width, tapering to a pointed apex. The plant produces inflorescences of flat spikelets, each of which contains 10 to 12 wind-pollinated florets.[1] These ripen to golden brown infructescences or seed heads in late summer. The seeds are dispersed by wind and can be carried long distances by storms and ocean currents, but reproduction commonly occurs vegetatively by forming buds around stem bases.[2]The plant forms dense surface roots and penetrating deep roots that are colonized by beneficial organisms such as micorrhizal fungi. Rhizomes are elongate and produce extensive lateral growth. They root readily when buried in sand.[2] Uniola paniculata uses a C4 pathway for carbon fixation.[3]Distribution and habitatUniola paniculata is found on beach fronts and barrier islands along the Atlantic Coast from New Jersey[4][5][6] to Florida, and the Gulf Coast from Florida to Tabasco, Mexico. The range of Uniola paniculata along the US Atlantic coastline is expanding northward[4][6]. It also occurs in the Bahamas and northwestern Cuba. It grows primarily on foredunes and dune crests. It is uncommon in swales between dunes where salt spray is limited, and it is rarely found inland.[1][2]. Growing conditionsDue to the harsh conditions in which it grows, U. paniculata has little competition from other plants. It is heat tolerant and highly resistant to drought, salinity and brief inundation by sea water. It grows in loose sand rather than finer-grained silty or clay-rich soils and does not tolerate water-logging.[7] The plants tend to trap blowing sand, and burial of the plant base by sand stimulates growth and helps the plant spread by tacking down the rhizomes.[8] U. paniculata is adversely affected by urban encroachment. Treated and untreated sewage, urban runoff and pollution from marinas all impact the plant. Off-road vehicles and foot traffic damage the plants, disrupt their roots and compact the sand. Loss of the plants leads to erosion and loss of protective dunes.[2]UsesSea oats are well suited to saline environments, and as such, are important to barrier island ecology and are often used in sand stabilization projects because their long root structure firmly holds loose sand. For example, in Fort Lauderdale, Florida, colonies of sea oats have been planted at several beaches. The oats are a crucial component of the area's hurricane defense strategy and have helped to stave off damage from tropical storms. The sea oat colonies and nascent dune structure they support are expected to flourish.[9] Legal protectionSea oats are a protected grass in several states along the southeastern Atlantic coast. Picking or disturbing sea oats is punishable by fine in Georgia{{citation needed|date=October 2017}}, South Carolina,[10] and North Carolina.[11] Florida by law also prohibits interfering with sea oats and protects nurserymen that grow sea oats.[12] Wildlife habitatSeeds of U. paniculata provide food for red-winged blackbirds, sparrows and other songbirds, as well as marsh rabbits and mice.[2] Florida ornithologists have discovered that the pygmy burrowing owl makes its nest within sea oat colonies to conceal its young from natural predators such as the frigatebirds.{{citation needed|date=December 2012}} References1. ^1 2 3 {{Cite web|url=http://lee.ifas.ufl.edu/Hort/GardenPubsAZ/Sea_Oats_Uniola_paniculata2.pdf|title=Uniola paniculata.|author=Hazell, J., Brown, S.H. and Cooprider, K., Univ. of Florida, IFAS Extension, Lee County, Southwest Florida|accessdate=2014-11-28 |archive-url=https://web.archive.org/web/20170630072108/http://lee.ifas.ufl.edu/Hort/GardenPubsAZ/Sea_Oats_Uniola_paniculata2.pdf|archive-date=2017-06-30}} {{Taxonbar|from=Q3549978}}2. ^1 2 3 4 {{Cite web|url=http://www.sms.si.edu/irlspec/Uniola_panicu.htm|title=Uniola paniculata|author=K. Hill, Smithsonian Marine Station at Fort Pierce|year=2001|accessdate=2014-11-28}} 3. ^{{Cite journal|last=Lonard|first=Robert|date=2011|title=Biological Flora of Coastal Dunes and wetlands: Uniola paniculata L|journal=Journal of Coastal Research|volume=27|pages=984–993|doi=10.2112/JCOASTRES-D-10-00167.1}} 4. ^1 {{Cite journal|last=Goldstein|first=Evan B.|last2=Mullins|first2=Elsemarie V.|last3=Moore|first3=Laura J.|last4=Biel|first4=Reuben G.|last5=Brown|first5=Joseph K.|last6=Hacker|first6=Sally D.|last7=Jay|first7=Katya R.|last8=Mostow|first8=Rebecca S.|last9=Ruggiero|first9=Peter|date=2018-06-08|title=Literature-based latitudinal distribution and possible range shifts of two US east coast dune grass species (Uniola paniculata and Ammophila breviligulata)|journal=PeerJ|language=en|volume=6|pages=e4932|doi=10.7717/peerj.4932|pmid=29900075|pmc=5996817|issn=2167-8359}} 5. ^{{Cite web|url=https://ebgoldstein.github.io/ECplantmap.html|title=US East Coast Dune Grass Literature Map|website=ebgoldstein.github.io|language=en|access-date=2018-06-08}} 6. ^1 {{Cite journal|title=Data Portal - Data Package Summary {{!}} Long Term Ecological Research Network (LTER)|language=en|doi=10.6073/pasta/bdbe9a609e0508fdb7e39bc41f75bf6f|year=2018|last1=Goldstein|first1=Evan|last2=Mullins|first2=Elsemarie|last3=Moore|first3=Laura|last4=Biel|first4=Reuben|last5=Brown|first5=Joseph|last6=Hacker|first6=Sally|last7=Jay|first7=Katya|last8=Mostow|first8=Rebecca|last9=Ruggiero|first9=Peter|last10=Zinnert|first10=Julie|type=Data Set|publisher=Environmental Data Initiative}} 7. ^{{Cite journal|last=Hester|first=Mark W.|last2=Mendelssohn|first2=Irving A.|date=1989-03-01|title=Water relations and growth responses of Uniola paniculata (sea oats) to soil moisture and water-table depth|journal=Oecologia|language=en|volume=78|issue=3|pages=289–296|doi=10.1007/BF00379100|pmid=28312572|issn=0029-8549}} 8. ^{{Cite web|url=http://plants.usda.gov/factsheet/pdf/fs_unpa.pdf|title=Plant Fact Sheet for Sea Oats (Uniola paniculata L).|author=R.A. Shadow, USDA Natural Resources Conservation Service, East Texas Plant Materials Center, Nacogdoches, TX|accessdate=2014-11-28}} 9. ^{{Cite web|url=http://articles.sun-sentinel.com/keyword/sea-oats|title=Sea Oats|author=South Florida Sun Sentinel|accessdate=2014-11-30}} 10. ^{{cite web|url=http://law.justia.com/codes/south-carolina/2013/title-16/chapter-11/section-16-11-590|title=SC Code § 16-11-590 (2013)|accessdate=27 September 2014}} 11. ^{{cite web|url=http://www.ncleg.net/gascripts/statutes/statutelookup.pl?statute=14-129.2|title=NCGS § 14-129.2|accessdate=4 April 2013}} 12. ^{{cite web|url=https://www.flsenate.gov/Laws/Statutes/2011/161.242|title=Chapter 161 Section 242 - 2011 Florida Statutes|accessdate=30 October 2017}} 12 : Uniola|Grasses of the United States|Grasses of Mexico|Flora of the Eastern United States|Flora of the Southeastern United States|Flora of Northeastern Mexico|Flora of the Caribbean|Grasses of Alabama|Flora of Florida|Halophytes|Plants described in 1753|Taxa named by Carl Linnaeus |
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