Use of Sediment Bioassays to Verify Efficacy of Caulerpa taxifolia Eradication Treatments

Anderson, Lars W. J. and Tan, Wailuun and Woodfield, Rachael and Mooney, Robert and Merkel, Keith (2005) Use of Sediment Bioassays to Verify Efficacy of Caulerpa taxifolia Eradication Treatments. Journal of Aquatic Plant Management, 43, pp. 1-9.

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Official URL: http://www.apms.org/japm/vol43/v43p1.pdf

Abstract

Infestations of the marine macrophytic alga Caulerpa taxifolia were discovered in Agua Hedionda Lagoon, California in 2000. Rapid response actions included containment under pvc tarps coupled with injection of liquid sodium hypochlorite. To assess the efficacy of these treatments, replicated sediment cores were removed from representative treated sites and transferred to grow-out facilities. Similar cores from uninfested (control) sediments were removed, inoculated with viable explants of C. taxifolia and placed in grow-out facilities. Results from two sampling periods (1 year, 2 years post-treatment) showed that no viable C. taxifolia emerged in cores, and that inoculated “control” sediments supported normal growth. Eelgrass ( Zostera marina L.) seedlings emerged from native seed-banks in “treated” cores, which also supported growth of some invertebrates (annelid worms and hydroids). This study provided essential verification of C. taxifolia eradication efforts, and demonstrates the feasibility of incorporating quality control/quality assurance components in rapid response actions. Results of this study also suggest that seeds of eelgrass are viable for at least two years. (PDF has 9 pages.)

Item Type: Article
Title: Use of Sediment Bioassays to Verify Efficacy of Caulerpa taxifolia Eradication Treatments
Personal Creator/Author:
CreatorsEmail
Anderson, Lars W. J.
Tan, Wailuun
Woodfield, Rachael
Mooney, Robert
Merkel, Keith
Refereed: Yes
Journal or Publication Title: Journal of Aquatic Plant Management
Volume: 43
Page Range: pp. 1-9
Date: 2005
Issuing Agency: Aquatic Plant Management Society, Inc.
Uncontrolled Keywords: Zostera marina; rapid response; invasive species; chlorine; Agua Hedionda Lagoon; California
Subjects: Management
Biology
Environment
Item ID: 1545
Depositing User: Stephanie Haas
Date Deposited: 04 Nov 2008 22:58
Last Modified: 29 Sep 2011 20:21
URI: http://aquaticcommons.org/id/eprint/1545

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