Plant Physiological Ecology

Plant Physiological Ecology

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Box 9E. 1 Continued FIGURE 2. The Ca€“Sa€“R triangle model (Grime 1979). The strategies at the three corners are C, competiti- winning species; S, stress-tolerating s- cies; R, ruderalspecies. Particular species can engage in any mixture of these three primary strategies, and the m- ture is described by their position within the triangle. comment briefly on some other dimensions that Grimea€™s (1977) triangle (Fig. 2) (see also Sects. 6. 1 are not yet so well understood. and 6. 3 of Chapter 7 on growth and allocation) is a two-dimensional scheme. A Ca€”S axis (Com- tition-winning species to Stress-tolerating spe- Leaf Economics Spectrum cies) reflects adaptation to favorable vs. unfavorable sites for plant growth, and an R- Five traits that are coordinated across species are axis (Ruderal species) reflects adaptation to leaf mass per area (LMA), leaf life-span, leaf N disturbance. concentration, and potential photosynthesis and dark respiration on a mass basis. In the five-trait Trait-Dimensions space, 79%ofallvariation worldwideliesalonga single main axis (Fig. 33 of Chapter 2A on photo- A recent trend in plant strategy thinking has synthesis; Wright et al. 2004). Species with low been trait-dimensions, that is, spectra of varia- LMA tend to have short leaf life-spans, high leaf tion with respect to measurable traits. Compared nutrient concentrations, and high potential rates of mass-based photosynthesis. These species with category schemes, such as Raunkiaera€™s, trait occur at the a€˜a€˜quick-returna€™a€™ end of the leaf e- dimensions have the merit of capturing cont- nomics spectrum.Leaf respiration of snow gum in the light and dark. interactions between temperature and irradiance. Plant Physiol. 122: 915a€”924. Atkin, O.K., Scheurwater, I., aamp; Pons, T.L. 2007. ... Ana- lysis of root respiration of Solanum tuberosum as related to growth, ion uptake and maintenance of biomass: a comparison of different ... The costs of tundra plant structures: Evaluation of concepts and currencies. Am. Natanbsp;...

Title:Plant Physiological Ecology
Author:Hans Lambers, F. Stuart Chapin III, Thijs L. Pons
Publisher:Springer Science & Business Media - 2008-10-08


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