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Interference between the macroalga Caulerpa prolifera and the seagrass Halodule wrightii
Taplin, K.A.; Irlandi, E.A.; Raves, R. (2005). Interference between the macroalga Caulerpa prolifera and the seagrass Halodule wrightii. Aquat. Bot. 83(3): 175-186
In: Aquatic Botany. Elsevier Science: Tokyo; Oxford; New York; London; Amsterdam. ISSN 0304-3770, more
Peer reviewed article  

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Keywords
    Aquatic plants; Competition; Interactions; Submergence; Caulerpa prolifera (Forsskål) J.V.Lamouroux, 1809 [WoRMS]; Halodule wrightii Ascherson, 1868 [WoRMS]; Marine

Authors  Top 
  • Taplin, K.A.
  • Irlandi, E.A., correspondent
  • Raves, R.

Abstract
    A field experiment was conducted to examine interactions between the seagrass Halodule wrightii and the macroalga Caulerpa prolifera in the Indian River Lagoon, FL, USA, and further if the outcome of the interactions between the two species was influenced by water depth. The experiment involved the manipulation of neighbor presence in plots established at the shallowest (50 cm) and deepest (80 cm) depths at which the two species co-existed at adequate densities to perform removal experiments. Shoot and frond densities were measured at the beginning (April), middle (July) and end (October) of the 6-month growing season, and above- and below-ground biomass values were determined at the end of the experiment (October). In the middle of the growing season H. wrightii had higher shoot densities and greater biomass in plots where C. prolifera had been removed at both water depths. This same pattern in shoot density and biomass for H. wrightii also occurred at the end of the growing season at the 80 cm depth. C. prolifera occurred at higher densities and greater biomass in the 80 cm depth range, but was generally unaffected by the presence of H. wrightii at either depth.

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