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• W2031293034 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 321:55-66 (2006) - doi:10.3354/meps321055 Dynamics of macrofaunal body size in a deltaic environment Ioanna Akoumianaki1,3,*, Sokratis Papaspyrou2, Artemis Nicolaidou2 1Department of Biology, University of Crete, Vassilika Vouton, 71409 Heraklio, Crete, Greece 2Department of Zoology—Marine Biology, University of Athens, Panepistimiopolis 15784, Athens, Greece 3Present address: Institute of Oceanography, Hellenic Centre for Marine Research, Anavissos 19013, Attiki, Greece *Email: akoumio@ath.hcmr.gr ABSTRACT: Macrofaunal density, biomass, and respiration size spectra, as well as density- and respiration-body size allometries, were investigated in a deltaic environment of the eastern Mediterranean (Maliakos Gulf, Greece). Four stations were sampled along a gradient of increasing depth and decreasing water transparency from the river mouth to the plume area in May, August, and November 2000, and February and May 2001. Density and biomass significantly decreased in winter and spring near the river mouth. The shape and peaks of size spectra were temporally variable, indicating that no single factor determines body size at all times. The slopes of the seasonally averaged normalized biomass size spectra gradually decreased from –0.47 at the river mouth to –1.03 in the plume area, clearly indicating a biomass increase with increasing body size towards the river mouth. A flat lower boundary in density/body size relationships at all stations precluded a strong negative regression slope and indicated that the density of small- and intermediate-sized macrofaunal organisms is constrained by perturbations. Regressions of calculated respiration rates against body size were close to 0.75 only at the river mouth during winter, thus indicating that increases in riverine sediment discharges during that period constrain the macrofaunal community. Overall, there was no evidence of energy supply constraints for macrofaunal body size in Maliakos Gulf. Irrespective of whether size spectra and body size allometries conform to global patterns or not, they proved to be sensitive and straightforward descriptors for understanding the macrofauna’s response to the deltaic environment. KEY WORDS: Macrofauna · Size spectra · Biomass · Allometry · Respiration · Coastal zone Full text in pdf format PreviousNextExport citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 321. Online publication date: September 08, 2006 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2006 Inter-Research." @default.
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• W2031293034 title "Dynamics of macrofaunal body size in a deltaic environment" @default.
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