348 
Field, C.B., J.A. Gamon, and J. Pefiuelas. 1993. Remote Sensing of Terrestrial Photosynthesis. 
Ecophysiology of Photosynthesis. Ecological Studies; vol.100 (Ed by Schulze, E.D., and M.M. 
Caldwell). 
Filella, I., and J. Pefiuelas. 1994. The red edge position and shape as indicators of plant chlorophyll 
content, biomass and hydric status. International Journal of Remote Sensing. In press. 
Hardwick, K., and N.R. Baker. 1973. In vivo measurements of chlorophyll content in leaves. New 
Phytologyst 72:51-54. 
Jacquemoud, S. and F. Baret. 1990. PROSPECT: A model of leaf optical properties spectra. Remote 
Sensing of Environment 34:75-91. 
Lichtenthaler, H.K. 1987. Chlorophylls and carotenoids: pigments of Photosynthesis. Methods of 
Enzymology 148:350-352. 
Maas, S.J., and J.R. Dunlap. 1989. Reflectance, transmittance, and absorptance of light by normal, 
etiolated, and albino com leaves. Agronomy Journal 81: 105-110. 
Macnicol, P.K., M.L. Dudzinski, and B.N. Condon. 1976. Estimation of chlorophyll in tobacco 
leaves by direct photometry, Annals of Botany 40:143-152. 
Margalef, R. 1974. Ecologia. Ed. Omega, Barcelona. 
Malthus, T.J. 1989. Anglo-French collaborative reflectance experiment. Experiment I, Brooms Bam, 
July 1990. INRA bioclimatologie, BP 91, 84143 Montfavet, France. 
Nelder, J.A. and R. Mead. 1952. A simplex method for function minimization. Computer Journal 
7:308-313. 
Pefiuelas, J. 1984a. Pigment and morphological response to emersion and immersion of some aquatic 
and terrestrial mosses in N.E. Spain. Journal of Bryology 13:115-128. 
Pefiuelas, J. 1984b. Pigments of aquatic mosses of the river Muga, NE Spain, and their response to 
water pollution. Lindbergia 10:127- 132. 
Pefiuelas J., C. Field , K. Griffin, and J. Gamon. 1993a. Assessing Community type, plant biomass, 
pigment composition and photosynthetic efficiency of aquatic vegetation from spectral reflectance. 
Remote Sensing of Environment 46:1-25. 
Pefiuelas, J., J. Gamon, A. Freeden, J. Merino, and C. Field. 1993b. Indices associated with diurnal 
and seasonnal changes in the spectral reflectance of nitrogen and water limited sunflower leaves. 
Remote Sensing of Environment, in press. 
Sanger, J. E. 1972. Quantitative investigations of leaf pigments from their inception in buds through 
autumn coloration to decomposition in falling leaves. Ecology 52 (6): 1075-1089. 
Thomas, J.R. and H.W. Gaussman. 1977. Leaf reflectance vs. leaf chlorophyll and carotenoid 
concentration for eight crops. Agronomy Journal 69:799-802. 
Wallihan, E.F. 1973. Portable reflectance meter for estimating chlorophyll concentrations in leaves. 
Agronomy Journal 65:659-652. 
Young, A., and G. Britton. 1990. Carotenoids and stress. Stress Responses in Plants:Adaptation and 
Acclimation Mechanisms. Alscher, R.G. & Cumming, J.R. (eds.). Wiley-Liss, pp. 87-112. 
Vanderbilt V.C., G. Rondeaux, and F. Baret. 1993. Polarization of light by vegetation. In C. Varlet- 
Grancher, R. Bonhomme, & H. Sinoquet (Eds.), Crop structure and microclimate: characterizations and 
applications. Paris (France): INRA edition.