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• W2328579851 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 509:103-112 (2014) - DOI: https://doi.org/10.3354/meps10883 Scaling and transport kinetics in aquatic primary producers T. A. V. Rees Leigh Marine Laboratory and Institute of Marine Science, University of Auckland, PO Box 349, Warkworth 0941, New Zealand Corresponding author: ta.rees@auckland.ac.nz ABSTRACT: Geometry, size and shape are fundamentally important features of living organisms. It was hypothesised that in aquatic primary producers differences in geometry, shape and density would affect the relationship between dry mass, surface area and volume and that scaling relationships between rates of nutrient uptake and dry mass would vary depending on transport kinetics and nutrient concentration. Allometric relationships between dry mass (M) and volume (V), surface area (SA), growth rate and rates of nitrate uptake were determined using reduced major axis regressions. Volume scaled as M1.03 and surface area as M0.79 (and V0.76) for aquatic primary producers. However, maximum growth rate, when expressed as g dry weight ind.-1 d-1, scaled as M0.88. Maximum rates of nitrate uptake (expressed as µmol ind.-1 h-1) scaled similarly to growth (M0.86). However, the scaling exponents (M0.79) for rates of nitrate uptake at low concentrations and affinity (maximum uptake rate/the concentration of nutrient that gives half the maximum rate of uptake, Vmax/Km) were the same as the scaling exponent for surface area. Transport systems provide a useful approach to allometric relationships and illustrate that (1) scaling exponents for a given process can vary and (2) observed scaling exponents for transport are explicable through differences in the kinetics of transport systems. The maximum total surface area of the picoplankter Prochlorococcus and the kelp Postelsia per m2 ocean surface are very similar, and the potential of marine ‘leaf area indices’ as a unifying concept is discussed. KEY WORDS: Algae · Allometry · Macroalgae · Microalgae · Nitrate uptake Full text in pdf format Supplementary material PreviousNextCite this article as: Rees TAV (2014) Scaling and transport kinetics in aquatic primary producers. Mar Ecol Prog Ser 509:103-112. https://doi.org/10.3354/meps10883 Export citation RSS - Facebook - Tweet - linkedIn Cited by Published in MEPS Vol. 509. Online publication date: August 27, 2014 Print ISSN: 0171-8630; Online ISSN: 1616-1599 Copyright © 2014 Inter-Research." @default.
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• W2328579851 date "2014-08-27" @default.
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• W2328579851 title "Scaling and transport kinetics in aquatic primary producers" @default.
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• W2328579851 doi "https://doi.org/10.3354/meps10883" @default.
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