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Auteur Hendrik Poorter |
Documents disponibles écrits par cet auteur (4)
Affiner la rechercheCauses and consequences of variation in leaf mass per area (LMA): a meta-analysis / Hendrik Poorter in New Phytologist, 182 (2009)
Titre : Causes and consequences of variation in leaf mass per area (LMA): a meta-analysis Type de document : Imprimé Auteurs : Hendrik Poorter ; Ülo Niinemets ; Lourens Poorter ; Ian J. Wright ; Rafael Villar Année de publication : 2009 Article en page(s) : 565-588 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Type biologique
[CBNPMP-Thématique] Anatomie végétaleRésumé : Here, we analysed a wide range of literature data on the leaf dry mass per unit area (LMA). In nature, LMA varies more than 100-fold among species. Part of this variation (c. 35%) can be ascribed to differences between functional groups, with evergreen species having the highest LMA, but most of the variation is within groups or biomes. When grown in the same controlled environment, leaf succulents and woody evergreen, perennial or slow-growing species have inherently high LMA. Within most of the functional groups studied, high-LMA species show higher leaf tissue densities. However, differences between evergreen and deciduous species result from larger volumes per area (thickness). Response curves constructed from experiments under controlled conditions showed that LMA varied strongly with light, temperature and submergence, moderately with CO2 concentration and nutrient and water stress, and marginally under most other conditions. Functional groups differed in the plasticity of LMA to these gradients. The physiological regulation is still unclear, but the consequences of variation in LMA and the suite of traits interconnected with it are strong. This trait complex is an important factor determining the fitness of species in their environment and affects various ecosystem processes. Lien pérenne : DOI : 10.1111/j.1469-8137.2009.02830.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150718
in New Phytologist > 182 (2009) . - 565-588Poorter, Hendrik, Niinemets, Ülo, Poorter, Lourens, Wright, Ian J., Villar, Rafael 2009 Causes and consequences of variation in leaf mass per area (LMA): a meta-analysis. New Phytologist, 182: 565-588.Documents numériques
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Article (2009)URL
Titre : A comparison of specific leaf area, chemical composition and leaf construction costs of field plants from 15 habitats differing in productivity Type de document : Imprimé Auteurs : Hendrik Poorter ; Rob de Jong Année de publication : 1999 Article en page(s) : 163-176 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : Laboratory experiments have shown a large difference in specific leaf area (SLA, leaf area: leaf mass) between species from nutrient-poor and nutrient-rich habitats, but no systematic difference in the construction costs (the amount of glucose required to construct 1 g biomass). We examined how far these patterns are congruent with those from field-grown plants. An analysis was made of the vegetation in a range of grasslands and heathlands differing in productivity. The SLA of the dominant species in 15 different habitats was determined, as well as chemical composition and construction costs of bulk samples of leaves. SLA in the field was generally lower than in the laboratory, but showed consistency in that the ranking across species remained the same. Species from highly productive habitats had higher SLA than those from sites of low productivity, although individual species sometimes deviated substantially from the general trend. Construction costs were similar for plants from different habitats. This was mainly due to the positive correlation between an expensive class of compounds (proteins) and a cheap one (minerals). Lien pérenne : DOI : 10.1046/j.1469-8137.1999.00428.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150730
in New Phytologist > 143 (1999) . - 163-176Poorter, Hendrik, Jong, Rob de 1999 A comparison of specific leaf area, chemical composition and leaf construction costs of field plants from 15 habitats differing in productivity. New Phytologist, 143: 163-176.Documents numériques
Article (1999)URL
Titre : A handbook of protocols for standardised and easy measurement of plant functional traits worldwide Type de document : Imprimé Auteurs : Johannes H. C. Cornelissen ; Sandra Lavorel (1965-) ; Eric Garnier (1959-) ; Sandra Díaz ; N. Buchmann ; D. E. Gurvich ; Peter B. Reich ; H. ter Steege ; H. D. Morgan ; M. G. A. van der Heijden ; Juli G. Pausas ; Hendrik Poorter Année de publication : 2003 Article en page(s) : 335-380 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : There is growing recognition that classifying terrestrial plant species on the basis of their function (into ‘functional types’) rather than their higher taxonomic identity, is a promising way forward for tackling important ecological questions at the scale of ecosystems, landscapes or biomes. These questions include those on vegetation responses to and vegetation effects on, environmental changes (e.g. changes in climate, atmospheric chemistry, land use or other disturbances). There is also growing consensus about a shortlist of plant traits that should underlie such functional plant classifications, because they have strong predictive power of important ecosystem responses to environmental change and/or they themselves have strong impacts on ecosystem processes. The most favoured traits are those that are also relatively easy and inexpensive to measure for large numbers of plant species. Large international research efforts, promoted by the IGBP–GCTE Programme, are underway to screen predominant plant species in various ecosystems and biomes worldwide for such traits. This paper provides an international methodological protocol aimed at standardising this research effort, based on consensus among a broad group of scientists in this field. It features a practical handbook with step-by-step recipes, with relatively brief information about the ecological context, for 28 functional traits recognised as critical for tackling large-scale ecological questions. Lien pérenne : DOI : 10.1071/BT02124 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150716
in Australian Journal of Botany > 51 (2003) . - 335-380Cornelissen, Johannes H. C., Lavorel, Sandra (1965-), Garnier, Eric (1959-), Díaz, Sandra, Buchmann, N., Gurvich, D. E., Reich, Peter B., Steege, H. ter, Morgan, H. D., Heijden, M. G. A. van der, Pausas, Juli G., Poorter, Hendrik 2003 A handbook of protocols for standardised and easy measurement of plant functional traits worldwide. Australian Journal of Botany, 51: 335-380.Documents numériques
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Article (2003)URL
Titre : Specific leaf area and dry matter content estimate thickness in laminar leaves Type de document : Imprimé Auteurs : Denis Vile (1977-) ; Eric Garnier (1959-) ; Bill Shipley (1960-) ; Gérard Laurent ; Marie-Laure Navas ; Catherine Roumet ; Sandra Lavorel (1965-) ; Sandra Díaz ; John Gavin Hodgson (1945-) ; Francisco Lloret ; Guy F. Midgley ; Hendrik Poorter ; Mike C. Rutherford ; Peter J. Wilson ; Ian J. Wright Année de publication : 2005 Article en page(s) : 1129-1136 Langues : Français (fre) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : Background and Aims Leaf thickness plays an important role in leaf and plant functioning, and relates to a species' strategy of resource acquisition and use. As such, it has been widely used for screening purposes in crop science and community ecology. However, since its measurement is not straightforward, a number of estimates have been proposed. Here, the validity of the (SLA × LDMC)−1 product is tested to estimate leaf thickness, where SLA is the specific leaf area (leaf area/dry mass) and LDMC is the leaf dry matter content (leaf dry mass/fresh mass). SLA and LDMC are two leaf traits that are both more easily measurable and often reported in the literature. Methods The relationship between leaf thickness (LT) and (SLA × LDMC)−1 was tested in two analyses of covariance using 11 datasets (three original and eight published) for a total number of 1039 data points, corresponding to a wide range of growth forms growing in contrasted environments in four continents. Key Results and Conclusions The overall slope and intercept of the relationship were not significantly different from one and zero, respectively, and the residual standard error was 0·11. Only two of the eight datasets displayed a significant difference in the intercepts, and the only significant difference among the most represented growth forms was for trees. LT can therefore be estimated by (SLA × LDMC)−1, allowing leaf thickness to be derived from easily and widely measured leaf traits. Lien pérenne : DOI : 10.1093/aob/mci264 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150726
in Annals of Botany > 96 (2005) . - 1129-1136Vile, Denis (1977-), Garnier, Eric (1959-), Shipley, Bill (1960-), Laurent, Gérard, Navas, Marie-Laure, Roumet, Catherine, Lavorel, Sandra (1965-), Díaz, Sandra, Hodgson, John Gavin (1945-), Lloret, Francisco, Midgley, Guy F., Poorter, Hendrik, Rutherford, Mike C., Wilson, Peter J., Wright, Ian J. 2005 Specific leaf area and dry matter content estimate thickness in laminar leaves. Annals of Botany, 96: 1129-1136.Documents numériques
Article (2005)URL
