Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration
| ISSN: |
1432-1939
|
|---|---|
| Keywords: |
Key words Tropical rainforest ; 13C ; Interspecific diversity ; Functional grouping ; Canopy carbon isotope discrimination
|
| Source: |
Springer Online Journal Archives 1860-2000
|
| Topics: |
Biology
|
| Notes: |
Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands.
|
| Type of Medium: |
Electronic Resource
|
| URL: |
| _version_ | 1798295858306875394 |
|---|---|
| autor | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| autorsonst | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| book_url | http://dx.doi.org/10.1007/PL00008871 |
| datenlieferant | nat_lic_papers |
| hauptsatz | hsatz_simple |
| identnr | NLM205853048 |
| issn | 1432-1939 |
| journal_name | Oecologia |
| materialart | 1 |
| notes | Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands. |
| package_name | Springer |
| publikationsjahr_anzeige | 2000 |
| publikationsjahr_facette | 2000 |
| publikationsjahr_intervall | 7999:2000-2004 |
| publikationsjahr_sort | 2000 |
| publisher | Springer |
| reference | 124 (2000), S. 454-468 |
| schlagwort | Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination |
| search_space | articles |
| shingle_author_1 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| shingle_author_2 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| shingle_author_3 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| shingle_author_4 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. |
| shingle_catch_all_1 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands. 1432-1939 14321939 Springer |
| shingle_catch_all_2 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands. 1432-1939 14321939 Springer |
| shingle_catch_all_3 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands. 1432-1939 14321939 Springer |
| shingle_catch_all_4 | Bonal, D. Sabatier, D. Montpied, P. Tremeaux, D. Guehl, J. M. Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Key words Tropical rainforest 13C Interspecific diversity Functional grouping Canopy carbon isotope discrimination Abstract The interspecific variability of sunlit leaf carbon isotope composition (δ13C), an indicator of leaf intrinsic water-use efficiency (WUE, CO2 assimilation rate/leaf conductance for water vapour), was investigated in canopy trees of three lowland rainforest stands in French Guiana, differing in floristic composition and in soil drainage characteristics, but subjected to similar climatic conditions. We sampled leaves with a rifle from 406 trees in total, representing 102 species. Eighteen species were common to the three stands. Mean species δ13C varied over a 6.0‰ range within each stand, corresponding to WUE varying over about a threefold range. Species occurring in at least two stands displayed remarkably stable δ13C values, suggesting a close genetic control of species δ13C. Marked differences in species δ13C values were found with respect to: (1) the leaf phenology pattern (average δ13C=–29.7‰ and –31.0‰ in deciduous-leaved and evergreen-leaved species, respectively), and (2) different types of shade tolerance defined by features reflecting the plasticity of growth dynamics with respect to contrasting light conditions. Heliophilic species exhibited more negative δ13C values (average δ13C=–30.5‰) (i.e. lower WUE) than hemitolerant species (–29.3‰). However, tolerant species (–31.4‰) displayed even more negative δ13C values than heliophilic ones. We could not provide a straightforward ecophysiological interpretation of this result. The negative relationship found between species δ13C and midday leaf water potential (Ψwm) suggests that low δ13C is associated with high whole tree leaf specific hydraulic conductance. Canopy carbon isotope discrimination (Δ A ) calculated from the basal area-weighed integral of the species δ13C values was similar in the three stands (average Δ A =23.1‰), despite differences in stand species composition and soil drainage type, reflecting the similar proportions of the three different shade-tolerance types among stands. 1432-1939 14321939 Springer |
| shingle_title_1 | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| shingle_title_2 | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| shingle_title_3 | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| shingle_title_4 | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| sigel_instance_filter | dkfz geomar wilbert ipn albert fhp |
| source_archive | Springer Online Journal Archives 1860-2000 |
| timestamp | 2024-05-06T09:42:52.533Z |
| titel | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| titel_suche | Interspecific variability of δ13C among trees in rainforests of French Guiana: functional groups and canopy integration |
| topic | W |
| uid | nat_lic_papers_NLM205853048 |