Garcia, FC

Garcia-Martin, EE

López-Urrutia-Lorente, Á. (Ángel)

Serret, P

Zubkov, MV

English

García, F.C.

López-Urrutia-Lorente, Ángel

Zubkov, M.V.

Digital.CSIC

Superlinear Scaling of Microbial Metabolic Rates with cell size in the Atlantic Ocean

Repositorio Institucional Digital del IEO

SUPERLINEAR SCALING OF MICROBIAL METABOLIC RATES WITH CELL SIZE IN THE ATLANTIC OCEANSuperlinear scaling of   microbial metabolic rates with cell size in the Atlantic Ocean(solo una sugerencia, al final me molo lo de superman..)Francisca C. Garcia1,*,Ángel López-Urrutia1,, E.Elena García-Martín2,, Pablo Serret2, , Mikhail V. Zubkov3,        1Centro Oceanográfico de Gijón,Instituto Español de Oceanografía, Avenida Príncipe de Asturias, 70 bis,E-33213, Gijón, Spain    2Universidad de Vigo, Departamento de Ecología y Biología Animal, Carretera Colegio Universitario s/n, 36310, Vigo, Pontevedra, Spain3National Oceanography Centre, Southampton SO14 3ZH, United Kingdom      *Corresponding author: paqui.garcia@gi.ieo.es (​mailto:paqui.garcia@gi.ieo.es​)Several studies have shown that metabolic rate scales with body size following a power law, with a scaling exponent of approximately ¾¾. This ¾ rule has been subject to strong debate and recent studies have shown that the ¾- power scaling is not universal. Scaling exponents can reach values close to 1 for protists and even greater than 1 for prokaryotes. In order to clarify this controversy,  we carried out in vivo electron transport system (ETS) activity measurements of size-fractionated (no sé porque pero yo lo pondria de menor a mayor.. 0.2, 0.4, 0.6, 0.8, 0.6, 0.4, 0.2  µm) natural marine microbial planktonic communities during Atlantic Meridional Transect AMT-21  cruise (50ºN to 45ºS).   Additionally, flow cytometry samples were taken at the same sampling points to estimate microbial community cell size. We parameterized a mixed-effect model to analyse the relationship between respiration per cell and cell size for bacterioplankton along the Atlantic Ocean. The allometric scaling exponent   was significantly higher than 1 and ,stations, the superlinearity was ubiquitous   across the latitudinal transect. Several studies have shown that metabolic rate scales with body size following a power law, with a scaling exponent of approximately &#190;. This &#190; rule has been subject to strong debate and recent studies have shown that the &#190;- power scaling is not universal. Scaling exponents can reach values close to 1 for protists and even greater than 1 for prokaryotes. In order to clarify this controversy, we carried out <em>in vivo</em> electron transport system (ETS) activity measurements of size-fractionated (0.2, 0.4, 0.6, 0.8 &#181;m) natural marine microbial planktonic communities during Atlantic Meridional Transect AMT-21 cruise (50&#186;N to 45&#186;S). Additionally, flow cytometry samples were taken at the same sampling points to estimate microbial community cell size. We parameterized a mixed-effect model to analyse the relationship between respiration per cell and cell size for bacterioplankton along the Atlantic Ocean. The allometric scaling exponent was significantly higher than 1 and  the superlinearity was ubiquitous across the latitudinal transect. 

http://www.repositorio.ieo.es/e-ieo/bitstream/10508/2606/1/AbstractAslo2014_Def.doc

Superlinear Scaling of Microbial Metabolic Rates with cell size in the Atlantic Ocean

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Repositorio Institucional Digital del IEO