Species Regional Summary
Bonnemaisonia hamifera
Bay of Fundy to Cape Cod ( NA-ET2 )

Invasion History Vectors Impacts References

Invasion

Invasion Description

1st record: Nova Scotia/Atlantic Ocean (Taylor 1957)

Geographic Extent

Nova Scotia/Bay of Fundy apporaches, Gulf of Maine (1987, Novaczek and McLachlan 1989); Nova Scotia/inner Bay of Fundy (1987, Novaczek and McLachlan 1989); ; Nova Scotia/Bay of Fundy;Reversing Falls Park, opposite Falls Island, Pembroke/Cobscook Bay (1994, Mathieson et al. 2009); Wilbur Neck, Dennys Bay, Pembroke/ME/Cobscook Bay (1996, Mathieson et al. 2009); Boon Island/ME/Gulf of Maine (Matheison et al. 1996); Harpswell, Bailey I., Giant’s Staircase/ME/Casco Bay (20 Feb 1995, Mathieson & Hehre (NHA # 54321, Mathieson et al. 2008); Cape Elizabeth/ME/Dyers Cove, Casco Bay (2010, Massachusetts Office of Coastal Zone Management 2013); Wells/ME/Wells Harbor (2013, 43 19 12N, 70 33 47 W (2013, Mathieson et al. 2016); Odiorne Point/NH/Gulf of Maine (2010, MacIntyre et al. 2010; Massachusetts Office of Coastal Zone Management 2013); Smuttynose Island, Isles of Shoals/ME/Gulf of Maine (Hehre 1968; Hehre and Mathieson 1970, cited by Mathieson 2008, gametophytes) Star Island (Isles of Shoals)/NH/Gulf of Maine (Matheison et al. 1996); Bald Head Cliff, York/ME/Gulf of Maine (Femino and Mathieson 1980); Ipswich/MA/Gulf of Maine (Webber 1968; Webber and Wilce 1971); Winter Island, Salem/MA/Massachusetts Bay (2010, Massachusetts Office of Coastal Zone Management 2013); Boston Harbor Islands/MA/Boston Harbor(Bell et al. 2005); Sandwich Jetty/MA/Cape Cod Bay (Sears 1971; Sears and Wilce 1975, cited by Mathieson 2008)

Vectors

Level Vector
Alternate Hull Fouling
Alternate Ballast Water

Regional Impacts

Ecological ImpactCompetition
Displaces native algae ( Harris and Tyrell 2001)
 
Ecological ImpactHabitat Change
Around the Isles of Shoals, NH-ME, from the 1979 to 2015, there has been a trend of replacement of kelps and other larger brown seaweeds, by smaller, bushier red seaweeds (Bonnemaisonia hamifera, Dasysiphonia japonica, and Neosiphonia spp.) and Codium fragile, increasing the structural complexity of the environment, and the abundance and diversity of meso-sized invertebrates (Dijkstra et al. 2017).
 

References

Full Reference List for Bonnemaisonia hamifera

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