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Ajouter le résultat dans votre panierA comparison of specific leaf area, chemical composition and leaf construction costs of field plants from 15 habitats differing in productivity / Hendrik Poorter in New Phytologist, 143 (1999)
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
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Titre : Specific leaf area and leaf dry matter content as alternative predictors of plant strategies Type de document : Imprimé Auteurs : Peter J. Wilson ; Ken Thompson (1954-) ; John Gavin Hodgson (1945-) Année de publication : 1999 Article en page(s) : 155-162 Langues : Anglais (eng) Catégories : [CBNPMP-Thématique] Revégétalisation Résumé : A key element of most recently proposed plant strategy schemes is an axis of resource capture, usage and availability. In the search for a simple, robust plant trait (or traits) that will allow plants to be located on this axis, specific leaf area is one of the leading contenders. Using a large new unpublished database, we examine the variability of specific leaf area and other leaf traits, the relationships between them, and their ability to predict position on the resource use axis. Specific leaf area is found to suffer from a number of drawbacks; it is both very variable between replicates and much influenced by leaf thickness. Leaf dry-matter content (sometimes referred to as tissue density) is much less variable, largely independent of leaf thickness and a better predictor of location on an axis of resource capture, usage and availability. However, it is not clear how useful dry matter content will be outside northwest Europe, and in particular in dry climates with many succulents. Lien pérenne : DOI : 10.1046/j.1469-8137.1999.00427.x Permalink : https://biblio.cbnpmp.fr/index.php?lvl=notice_display&id=150731
in New Phytologist > 143 (1999) . - 155-162Wilson, Peter J., Thompson, Ken (1954-), Hodgson, John Gavin (1945-) 1999 Specific leaf area and leaf dry matter content as alternative predictors of plant strategies. New Phytologist, 143: 155-162.Documents numériques
Article (1999)URL
