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- W2330482078 abstract "MEPS Marine Ecology Progress Series Contact the journal Facebook Twitter RSS Mailing List Subscribe to our mailing list via Mailchimp HomeLatest VolumeAbout the JournalEditorsTheme Sections MEPS 439:1-17 (2011) - DOI: https://doi.org/10.3354/meps09344 FEATURE ARTICLERafting on abiotic substrata: properties of floating items and their influence on community succession Macarena Bravo1, Juan Carlos Astudillo1, Domingo Lancellotti1, Guillermo Luna-Jorquera1,2, Nelson Valdivia2,3, Martin Thiel1,2,* 1Facultad de Ciencias de Mar, Universidad Católica del Norte, Larrondo 1281, Coquimbo, Chile 2Centro de Estudios Avanzados en Zonas Aridas (CEAZA), Coquimbo, Chile 3Instituto de Ciencias Marinas y Limnológicas, Facultad de Ciencias, Universidad Austral de Chile, Campus Isla Teja s/n, Valdivia, Chile *Email: thiel@ucn.cl ABSTRACT: A wide diversity of organisms is dispersed on abiotic floating substrata, but little is known about the succession of fouling communities on these items. The main abiotic floating items found in the oceans (volcanic pumice, plastics, and Styrofoam) differ in 3 principal characteristics, namely surface rugosity, buoyancy, and floating behaviour, confirmed herein by light and electron microscopy (SEM), measurements of buoyancy, and laboratory tests to determine floating stability. In order to examine how these properties affect colonization and community succession on these substrata, 3 experiments were conducted in the field for 14 wk: (1) substrata were permanently submerged to determine if colonization depends on substratum surface (‘Rings’ experiment); (2) substrata were tethered at the sea surface to examine the importance of buoyancy (‘Lines’ experiment); and (3) substrata were caged to test the role of their floating behaviour (‘Cages’ experiment). The most common colonizers in all 3 experiments were diatoms, Ulvales, and clonal ascidians from the genus Diplosoma. Surface rugosity of the substrata had only minor effects on the taxonomic richness of the developing communities. Buoyancy caused some differences in taxon cover, but taxon richness was similar on all 3 substrata. Finally, the floating behaviour at the sea surface had a strong influence on the communities developing on the floating substrata. Plastics (fewest changes in position) presented a higher richness and cover of taxa, while Styrofoam (most positional changes) harboured very few taxa. We conclude that colonization and succession on floating substrata is strongly influenced by positional changes, while surface rugosity and buoyancy appear important only during initial stages of community succession. KEY WORDS: Rafting · Abiotic substrata · Surface rugosity · Buoyancy · Floating behaviour · Fouling Full text in pdf format Information about this Feature Article Supplementary material NextCite this article as: Bravo M, Astudillo JC, Lancellotti D, Luna-Jorquera G, Valdivia N, Thiel M (2011) Rafting on abiotic substrata: properties of floating items and their influence on community succession. Mar Ecol Prog Ser 439:1-17. https://doi.org/10.3354/meps09344Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 439. Online publication date: October 20, 2011 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2011 Inter-Research." @default.
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- W2330482078 title "Rafting on abiotic substrata: properties of floating items and their influence on community succession" @default.
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