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Factors Affecting the Diversity of Benthic Infauna in Southern California Bays and Harbors
The prevalence of nonindigenous species (NIS) and their effects on benthic macroinvertebrate communities in southern California embayments was assessed by collecting 113 Van Veen Grab samples from nine bays and harbors during the summer and fall of 1998. NIS accounted for only 4% of the 617 taxa encountered but contributed 28% of abundance. NIS abundance was evenly distributed with no systematic differences among ports servicing large ocean-going vessels or small boat marinas. NIS in non-boat mooring areas were about half as frequent. Three species were responsible for 92% of the NIS abundance: a spionid polychaete worm Pseudopolydora paucibranchiata, a mytilid bivalve Musculista senhousia, and a semelid bivalve Theora lubrica. NIS did not appear to have a negative impact of the communities since NIS abundance was positively correlated with both abundance and richness of native species. P. paucibranchiata and M. senhousia create additional physical habitat structures that facilitate the presence of native infauna.
Factors Affecting the Diversity of Benthic Infauna in Southern California Bays and Harbors
The prevalence of nonindigenous species (NIS) and their effects on benthic macroinvertebrate communities in southern California embayments was assessed by collecting 113 Van Veen Grab samples from nine bays and harbors during the summer and fall of 1998. NIS accounted for only 4% of the 617 taxa encountered but contributed 28% of abundance. NIS abundance was evenly distributed with no systematic differences among ports servicing large ocean-going vessels or small boat marinas. NIS in non-boat mooring areas were about half as frequent. Three species were responsible for 92% of the NIS abundance: a spionid polychaete worm Pseudopolydora paucibranchiata, a mytilid bivalve Musculista senhousia, and a semelid bivalve Theora lubrica. NIS did not appear to have a negative impact of the communities since NIS abundance was positively correlated with both abundance and richness of native species. P. paucibranchiata and M. senhousia create additional physical habitat structures that facilitate the presence of native infauna.
Factors Affecting the Diversity of Benthic Infauna in Southern California Bays and Harbors
Mikel, Tim K. (author) / Velarde, Ronald G. (author) / Ranasinghe, Ananda (author) / Weisberg, Stephen B. (author) / Montagne, David E. (author) / Cadien, Donald B. (author) / Smith, Robert W. (author) / Dalkey, Ann (author)
California and the World Ocean 2002 ; 2002 ; Santa Barbara, California, United States
California and the World Ocean '02 ; 1215-1226
2005-03-16
Conference paper
Electronic Resource
English
Factors Affecting the Diversity of Benthic Infauna in Southern California Bays and Harbors
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