Leaf wax n-alkanes and δ13C values of CAM plants from arid southwest Africa - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Organic Geochemistry Année : 2014

Leaf wax n-alkanes and δ13C values of CAM plants from arid southwest Africa

(1) , (1) , (2, 3) , (1) , (4)
1
2
3
4

Résumé

We analysed leaves from 42 plants from the South African Succulent Karoo. Whole leaf d 13 C values clearly differentiated 3 different populations, consisting of plants operating under obligate CAM (crassulacean acid metabolism), facultative CAM and C 3 modes. In contrast, the leaf wax n-alkane d 13 C data from these metabolic groups showed a broader overlapping distribution. CAM plants operating under full CAM mode produced a wide range of apparent 13 C fractionation. Succulent/CAM plant wax yield was considerable (up to 23 mg/g in our plants), so its contribution to soil composition and sedimentary leaf wax composition should not be dismissed. The presence of CAM plant wax n-alkanes in sedimentary n-alkanes could therefore be a problem for accessing ecosystem scale C 3 –C 4 proportion.
Fichier non déposé

Dates et versions

hal-01817591 , version 1 (20-06-2018)

Licence

Copyright (Tous droits réservés)

Identifiants

Citer

A. Boom, A.S. Carr, Brian Chase, H.L. Grimes, M.E. Meadows. Leaf wax n-alkanes and δ13C values of CAM plants from arid southwest Africa. Organic Geochemistry, 2014, 67, pp.99 - 102. ⟨10.1016/j.orggeochem.2013.12.005⟩. ⟨hal-01817591⟩
71 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook Twitter LinkedIn More