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Predicting the allometry of leaf surface area and dry mass
Author(s) -
Niklas Karl J.,
Cobb Edward D.,
Spatz HannsChristof
Publication year - 2009
Publication title -
american journal of botany
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.218
H-Index - 151
eISSN - 1537-2197
pISSN - 0002-9122
DOI - 10.3732/ajb.0800250
Subject(s) - allometry , biology , scaling , exponent , dry weight , scale (ratio) , botany , ecology , mathematics , geometry , physics , linguistics , philosophy , quantum mechanics
The manner in which increases in leaf surface area S scale with respect to increases in leaf dry mass M t within and across species has important implications to understanding the ability of plants to harvest sunlight, grow, and ultimately reproduce. Thus far, no mechanistic explanation has been advanced to explain why prior work shows that the scaling exponent governing the S to M t relationship is generally significantly less than one (i.e., S ∝ M t α < 1.0 ) such that increases in M t yield diminishing returns with respect to increases in S across most species. Here, we show analytically why this phenomenon occurs and present equations that predict trends observed in the numerical values of scaling exponents for the S vs. M t relationships observed across dicot tree species and two aquatic vascular plant species.