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 136:245-255 (1996) - doi:10.3354/meps136245 Mixed fractals and anisotropy in subantarctic marine macroalgae from South Georgia: implications for epifaunal biomass and abundance Davenport J, Pugh PJA, McKechnie J Fractal dimensions (D) of image perimeters of 4 macroalgae (Macrocystis pyrifera, Desmarestia menziesii, Schizoseris condensata, Palmaria georgica) collected at South Georgia, Southern Ocean were established over a wide scale range. For 3 species (M. pyrifera, S. condensata, P. georgica)cross-frond D was also estimated. At large scale all species showed complex perimeters (D 1.26 to 1.83, depending on species), but showed reduced complexity (low D) at small scale, and so have mixed fractal characteristics. Cross-frond D was low in the 3 species studied, indicating anisotropy, and was markedly low in P. georgica which has extensive, smooth, flat fronds. Epifaunal community analysis demonstrated that epifaunal abundance and biomass were related more to the scale at which complexity occurs than degree of complexity itself. S.condensata and D. menziesii (particularly complex, high D) show high epifaunal abundance and biomass and a predominance of large animals; M. pyrifera and P. georgica (simpler, lower D) have low abundances and biomasses and the epifauna is dominated by small animals. M. pyrifera is fairly complex (D ca 1.3) at scales above 50 mm; its complexity will impinge on fish, birds and mammals, not epifauna. M. pyrifera beds have a perimeter D (ca 1.4) similar to those of convoluted coastlines. Mixed fractals . Anisotropy . Macroalgae . Epifauna Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 136. Publication date: June 06, 1996 Print ISSN:0171-8630; Online ISSN:1616-1599 Copyright © 1996 Inter-Research.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
