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effects of the cyanobacterium Lyngbya majuscula and artificial shading on the seagrass Halodule wrightii

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Date Issued:
2007
Summary:
Extensive blooms of the marine cyanobacterium Lyngbya majuscula occurred during 2006 in Halodule wrightii seagrass beds. We examined the effects of L. majuscula blooms on seagrass by removal treatments and assessed if this was primarily an effect of shading by conducting artificial shade treatments. We tested the effects of L. majuscula removal and artificial shading on fifty individual 0.25 m2 experimental seagrass plots infested with L. majuscula in a fully crossed, two-way experiment. Measurements included blade elongation, biomass, and stem density. Blade lengths of H. wrightii were significantly increased by the presence of artificial shading and L. majuscula. L. majuscula removal resulted in increased below ground biomass in shaded plots, suggesting an increase in stores, when possible, for accelerated recovery following a shading event. Adverse L. majuscula effects occurred after declines in bloom biomass indicating that L. majuscula can have a prolonged negative effect on H. wrightii production.
Title: The effects of the cyanobacterium Lyngbya majuscula and artificial shading on the seagrass Halodule wrightii.
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Name(s): Tiling, Kathryn A.
Harriet L. Wilkes Honors College
Type of Resource: text
Genre: Thesis
Issuance: multipart monograph
Date Issued: 2007
Publisher: Florida Atlantic University
Physical Form: electronic
electronic resource
Extent: v, 41 leaves : ill.
Language(s): English
Summary: Extensive blooms of the marine cyanobacterium Lyngbya majuscula occurred during 2006 in Halodule wrightii seagrass beds. We examined the effects of L. majuscula blooms on seagrass by removal treatments and assessed if this was primarily an effect of shading by conducting artificial shade treatments. We tested the effects of L. majuscula removal and artificial shading on fifty individual 0.25 m2 experimental seagrass plots infested with L. majuscula in a fully crossed, two-way experiment. Measurements included blade elongation, biomass, and stem density. Blade lengths of H. wrightii were significantly increased by the presence of artificial shading and L. majuscula. L. majuscula removal resulted in increased below ground biomass in shaded plots, suggesting an increase in stores, when possible, for accelerated recovery following a shading event. Adverse L. majuscula effects occurred after declines in bloom biomass indicating that L. majuscula can have a prolonged negative effect on H. wrightii production.
Identifier: 314763484 (oclc), 11597 (digitool), FADT11597 (IID), fau:1329 (fedora)
Note(s): by Kathryn A. Tiling.
Thesis (B.A.)--Florida Atlantic University, Honors College, 2007.
Bibliography: leaves 40-41.
Electronic reproduction. Boca Raton, Fla., 2007. Mode of access: World Wide Web.
Subject(s): Cyanobacteria -- Biological control
Seagrasses -- Physiology
Seagrasses -- Effect of salt on
Restoration ecology
Halodule wrightii -- Morphology
Held by: FBoU FAUER
Persistent Link to This Record: http://purl.flvc.org/FAU/11597
Use and Reproduction: Copyright © is held by the author, with permission granted to Florida Atlantic University to digitize, archive and distribute this item for non-profit research and educational purposes. Any reuse of this item in excess of fair use or other copyright exemptions requires permission of the copyright holder.
Host Institution: FAU

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