Mussel Community Studies [Year One].

Straughan, Dale and Kanter, Robert (1978) Mussel Community Studies [Year One]. Los Angeles, CA, Allan Hancock Foundation, University of Southern California, (Southern California Baseline Study and Analysis 1975/1976,3-2.2)

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Mytilus californianus communities (mussel beds) were examined from six geographic localities in Southern California. These included two mainland sites, Coal Oil Point and San Diego; and four island sites, San Miguel, Santa Cruz, San Nicholas, and Santa Barbara Islands. Optimal sample sizes were determined for each locality. In general, a sample, size of 1500 cm2 (five cores) was optimal for the "typical" mussel bed. However, structurally unique mussel beds required individual consideration. Community biomass, diversity, species richness, and species evenness were calculated quarterly for the island localities and biannually for mainland locations. The molluscs, primarily the mussels, accounted for 90% of the total biomass while all other groups combined accounted for 10% or less of the total biomass. The mussel communities from all localities contributed to the master species list which conservatively contained 346 species. The most diverse localities were Coal Oil Point and Santa Cruz Island with an average number of 73 and 74 species/O.lS m respectively. No overall seasonal patterns existed in community composition. The community similarity analyses showed the mainland localities biotically dissimilar from the islands and both groups were characterized by distinct faunal assemblages. In addition, San Miguel Island biota were unique among the island sites. The most important mussel bed structural attributes provided habitats for the associated community and included sediment and coarse fraction features. Food-related resources provided by the mussel bed were secondarily important. Community diversity generally increased with the quantity of habitat and food resources. (PDF contains 138 pages)

Item Type: Monograph or Serial Issue
Title: Mussel Community Studies [Year One].
Alternative Title: [Southern California Baseline Study, Year One: Intertidal study of the Southern California Bight.] Volume III, Report 2.2, Mussel Community Study.
Personal Creator/Author:
Straughan, Dale
Kanter, Robert
Series Name: Southern California Baseline Study and Analysis 1975/1976
Volume: 3
Number: 2.2
Date: 1978
Publisher: Allan Hancock Foundation, University of Southern California
Place of Publication: Los Angeles, CA
Projects: Contract AA550-CT6-40 to Science Applications, Inc.
Funders: Bureau of Land Mangement, Department of Interior
Uncontrolled Keywords: California Channel Islands; BLM
Subjects: Ecology
Item ID: 2449
Depositing User: Joe Wible
Date Deposited: 16 Jul 2009 22:48
Last Modified: 29 Sep 2011 19:04

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