 |
|
|
||||
| NAS - Nonindigenous Aquatic Species |
Translate this page with 
Common Name: dense-flowered cordgrass
Synonyms and Other Names: denseflower cordgrass
Taxonomy: available through 
Native Range:
South America (Brazil, Argentina, Uruguay, Chile)
| ||
 Alaska |
Hawaii |
Caribbean |
Interactive maps: Continental US, Alaska, Hawaii, Caribbean
Nonindigenous Occurrences:
Established in Humboldt Bay, California where it is the predominant marsh species, occupying approximately 90% of the remaining salt marsh habitat. Also known in the tidal marshes of the nearby Mad and the Eel Rivers, which are immediately north and south of Humboldt Bay (A. Pickart and H. Falenski pers. comm.). In the San Francisco Bay, populations are concentrated largely in the north bay at Creekside Park, along two miles of Corte Madera Creek, Richardson Bay, Brickyard Cove in San Rafael, and at Point Pinole on the east side of the Bay. Outlying populations of S. densiflora have been found in the south bay at Sanchez Marsh in Burlingame Lagoon and also in Tomales Bay. Populations were found in 2001 in Washington's Grays Harbor and near Coupeville on Whidbey Island.
Also known on Vancouver Island, British Columbia and along the SW Iberian Peninsula of Spain.
Means of Introduction: S. densiflora was likely introduced into Humboldt Bay, California with solid ballast used on ships transporting lumber to Chile in the mid-1800’s (Spicher and Josselyn 1985). Ocean currents area also a likely means of dispersal.
Status:
Impact of Introduction:
Remarks:
References
Castillo, J.M., L. Fernandez-Baco, E. M. Castellanos, C. J. Luque; M. E. Figueroa, A. J. Davy. 2000. Lower Limits of Spartina densiflora and S. maritima in a Mediterranean Salt Marsh Determined by Different Ecophysiological Tolerances. The Journal of Ecology 88(5): 801-812.
Clifford, P.M. 2002 “Dense-flowered cordgrass (Spartina densiflora) in Humboldt Bay Summary and Literature Review.” California State Coastal Commission. <http://www.Spartina.org/project_documents/humboldt_s_densiflora_2002.pdf> (accessed on 6/24/06).
Kittelson, P. M. and M. J. Boyd. 1997. Mechanisms of expansion for an introduced species of cordgrass, Spartina densiflora, in Humboldt Bay, California. Estuaries 20(4): 770-778.
Spicher, D. and M. Josselyn 1985. Spartina (Gramineae) in northern California: distribution and taxonomic notes. Madrono 32(3): 158-167.
Other Resources:
Author: V. Howard
Revision Date: 3/7/2008 Citation for this information:
V. Howard. 2010. Spartina densiflora. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=1127> Revision Date: 3/7/2008
| AccessibilityFOIAPrivacyPolicies and Notices | |
  |
|