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Auteur Bill Shipley (1960-) |
Documents disponibles écrits par cet auteur (4)
Affiner la rechercheDry matter content as a measure of dry matter concentration in plants and their parts / Bill Shipley in New Phytologist, 153 (2002)
Titre : Dry matter content as a measure of dry matter concentration in plants and their parts Type de document : Imprimé Auteurs : Bill Shipley (1960-) ; Thi-Tham Vu Année de publication : 2002 Article en page(s) : 359-364 Langues : Anglais (eng) Résumé : This study compared the predictive ability of dry matter content (DMC, dry mass per fresh mass) of leaves, stems, roots and entire plants in relation to dry matter concentration (D, dry mass per volume of plant organ). Data came from 28 species of field-collected plants (woody and herbaceous) and 17 species of herbaceous plants grown in hydroponic sand culture. Specific leaf areas were also measured. Dry matter content of the herbaceous plants grown in sand culture varied more between tissue types than did dry matter concentration but the correlation among plant parts was stronger when using DMC. Means and standard errors for DMC (g g−1) were 0.212 ± 0.009 (leaves), 0.176 ± 0.012 (support tissues) and 0.170 ± 0.021 (roots); for D (g cm−3) the values were 0.158 ± 0.010 (leaves), 0.168 ± 0.017 (support tissues) and 0.153 ± 0.013 (roots). Leaf DMC provided approximate estimates of leaf D (r = 0.76) for the field-collected plants but sclerophyllous leaves from shrubs restricted to acidic bogs proved to be outliers. The relationship between these two variables was stronger in the herbaceous species grown in sand culture, especially so for whole plant estimates (r = 0.91).
Dry matter content and dry matter concentration were equally good predictors of specific leaf area.
Lien pérenne : DOI : 10.1046/j.0028-646X.2001.00320.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150722
in New Phytologist > 153 (2002) . - 359-364Shipley, Bill (1960-), Vu, Thi-Tham 2002 Dry matter content as a measure of dry matter concentration in plants and their parts. New Phytologist, 153: 359-364.Documents numériques
Consultable
Article (2002)URLFrom plant traits to plant communities : a statistical mechanistic approach to biodiversity / Bill Shipley (2006)
Titre : From plant traits to plant communities : a statistical mechanistic approach to biodiversity Type de document : Tiré à part de revue Auteurs : Bill Shipley (1960-) ; Denis Vile (1977-) ; Eric Garnier (1959-) Année de publication : 2006 Importance : 812-814 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Biodiversité
[CBNPMP-Thématique] Biodiversité, niveau de perception
[CBNPMP-Thématique] Groupements végétaux, phytosociologie
[CBNPMP-Thématique] Méthode d'analyse en écologie (échantillonnage, méthode de calcul)Lien pérenne : DOI : 10.1126/science.1131344 Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=133128 Shipley, Bill (1960-), Vile, Denis (1977-), Garnier, Eric (1959-) 2006 From plant traits to plant communities : a statistical mechanistic approach to biodiversity. Science, 314 : 812-814.Exemplaires (1)
Code-barres Cote Support Localisation Section Disponibilité 18448 S Tiré à part Centre de documentation Tirés à part Consultable
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
Titre : A standardized protocol for the determination of specific leaf area and leaf dry matter content Type de document : Imprimé Auteurs : Eric Garnier (1959-) ; Bill Shipley (1960-) ; Catherine Roumet ; Gérard Laurent Année de publication : 2001 Article en page(s) : 688-695 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : The impact of sample preparation, rehydration procedure and time of collection on the determination of specific leaf area (SLA, the ratio of leaf area to leaf dry mass) and leaf dry matter content (LDMC, the ratio of leaf dry mass to fresh mass) of mature leaves was studied in three wild species growing in the field, chosen for their contrasting SLA and LDMC. Complete rehydration was achieved 6 h after samples were placed into water, but neither of the procedures tested – preparation of samples before rehydration or temperature applied during rehydration – had a significant effect on the final values of SLA or LDMC. As expected, water-saturated leaves had a lower LDMC than non-rehydrated leaves; more surprisingly, their SLA was also higher. The impact of rehydration on SLA was especially important when the SLA of the species was high. There was no significant effect of time of sampling on either trait in any species over the time period covered (09·00–16·30 h). These results suggest that SLA and LDMC obtained on water-saturated leaves (SLASAT and LDMCSAT) can be used for species comparisons. We propose a standardized protocol for the measurement of these traits. This would allow for better consistency in data collection, a prerequisite for the constitution of large databases of functional traits.
Lien pérenne : DOI : 10.1046/j.0269-8463.2001.00563.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150724
in Functional Ecology > 15 (5) (2001) . - 688-695Garnier, Eric (1959-), Shipley, Bill (1960-), Roumet, Catherine, Laurent, Gérard 2001 A standardized protocol for the determination of specific leaf area and leaf dry matter content. Functional Ecology, 15(5): 688-695.Documents numériques
Article (2001)URL
