TY  - GEN
A1  - Perkins, Daniel M.
A1  - Perna, Andrea
A1  - Adrian, Rita
A1  - Cermeño, Pedro
A1  - Gaedke, Ursula
A1  - Huete-Ortega, Maria
A1  - White, Ethan P.
A1  - Yvon-Durocher, Gabriel
T1  - Energetic equivalence underpins the size structure of tree and phytoplankton communities
T2  - Postprints der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe
N2  - The size structure of autotroph communities – the relative abundance of small vs. large individuals – shapes the functioning of ecosystems. Whether common mechanisms underpin the size structure of unicellular and multicellular autotrophs is, however, unknown. Using a global data compilation, we show that individual body masses in tree and phytoplankton communities follow power-law distributions and that the average exponents of these individual size distributions (ISD) differ. Phytoplankton communities are characterized by an average ISD exponent consistent with three-quarter-power scaling of metabolism with body
mass and equivalence in energy use among mass classes. Tree communities deviate from this pattern in a manner consistent with equivalence in energy use among diameter size classes. Our findings suggest that whilst universal metabolic constraints ultimately underlie the emergent size structure of autotroph communities, divergent aspects of body size (volumetric vs. linear dimensions) shape the ecological outcome of metabolic scaling in forest vs. pelagic ecosystems.
T3  - Zweitveröffentlichungen der Universität Potsdam : Mathematisch-Naturwissenschaftliche Reihe - 684 
KW  - general quantitative theory
KW  - cell-size
KW  - forest structure
KW  - scaling relationships
KW  - marine-phytoplankton
KW  - metabolic ecology
KW  - distributions
KW  - abundance
KW  - biomass
KW  - allometry
Y1  - 2019
U6  - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:517-opus4-425695
SN  - 1866-8372
IS  - 684
ER  -