 |
|
|
||||
| NAS - Nonindigenous Aquatic Species |
Translate this page with 
Common Name: Japanese brown algae
Synonyms and Other Names: Japanese weed, Japanese algae, Wireweed
Taxonomy: available through 
Identification: The main axes, anchored by a discoid holdfast, branches repeatedly and alternately to form a wiry thallus that is golden brown in color and up to 2 m tall. Each branch bears small (up to 4 cm) elongated blades and spherical floats that can occur singly or in small clusters (Mondragon 2003).
Size: 1 - 3 meters (3 - 10 feet).
Native Range:
Japan and China (Mondragon 2003).
| ||
 Alaska |
Hawaii |
Caribbean |
Interactive maps: Continental US, Alaska, Hawaii, Caribbean
Nonindigenous Occurrences: Prince of Wales Island, Alaska, to Baja California (Mondragon 2003).
Ecology: Common to locally abundant, on rocks and mud, in low intertidal and upper subtidal; found in sheltered to moderately exposed habitats (Mondragon 2003). Most common in wave-sheltered areas (Druehl 2000).
Means of Introduction: Introduced from Japan along with oysters as early as 1902 (Druehl 2000).
Status: Established
Impact of Introduction: Causes displacement of native algal species through over-growing and shading (Mondragon 2003).
Remarks:
References
Druehl, Louis D. (2000) Pacific Seaweeds; A guide to common seaweeds of the West Coast. pp. 190. Madeira Park, British Columbia: Harbour Publishing.
Mondragon, J. & Mondragon, J. (2003). Seaweeds of the Pacific Coast. Common marine algae from Alaska to Baja California. pp. iv, 5-97. Monterey, California: Sea Challengers.
Other Resources:
Gulf of Maine Potential Invaders - Sargassum muticum
Irish Seaweed Site - Sargassum muticum fact sheet
Monterey Bay Aquarium Research Institute - S. muticum
Author: Nancy Elder
Revision Date: 3/5/2009 Citation for this information:
Nancy Elder. 2009. Sargassum muticum. USGS Nonindigenous Aquatic Species Database, Gainesville, FL.
<http://nas.er.usgs.gov/queries/FactSheet.asp?speciesID=1685> Revision Date: 3/5/2009
| AccessibilityFOIAPrivacyPolicies and Notices | |
  |
|