Oecologia

, Volume 53, Issue 3, pp 418–420

Convective heat transfer characteristics of toothed leaves

  • Douglas E. Gottschlich
  • Alan P. Smith
Article

DOI: 10.1007/BF00389024

Cite this article as:
Gottschlich, D.E. & Smith, A.P. Oecologia (1982) 53: 418. doi:10.1007/BF00389024

Summary

Model leaves were used to test the hypothesis that serrate leaves have more convective heat loss than entire leaves of the same average size. Convection coefficients were positively correlated with size of teeth, supporting the hypothesis. Experimental results were in close agreement with theoretical predictions, which assumed an inverse correlation between depth of serration and effective leaf dimension.

Abbreviations

A

total surface area of model (cm2)

D

characteristic dimension of model (cm)

h

convection coefficient (cal cm-2 min-1oK-1)

I

radiant energy flux (cal cm-2 min-1)

Q

radiant energy absorbed by leaf (cal min-1)

qc

convective heat transfer (cal min-1)

qe

evaporative heat loss (cal min-1)

qk

conductive heat loss (cal min-1)

qr

radiative heat loss (cal min-1)

Ta

air temperature (oK)

T1

model temperature (oK)

V

wind speed (m s-1)

ε

emissivity

σ

Stefan-Boltzmann constant (8.130x10-11 cal min-1 cm-2oK-4)

Copyright information

© Springer-Verlag 1982

Authors and Affiliations

  • Douglas E. Gottschlich
    • 1
  • Alan P. Smith
    • 2
    • 3
  1. 1.Department of BiologyUniversity of PennsylvaniaPhiladelphiaUSA
  2. 2.Department of BiologyUniversity of MiamiCoral GablesUSA
  3. 3.Smithsonian Tropical Research Institute, APOMiamiUSA
  4. 4.PhiladelphiaUSA