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Plant Physiological Ecology (2nd ed. 2008)

By: Chapin, F. Stuart, III Lambers, Hans Pons, Thijs L.

0387783407 / 9780387783406
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United States
178 x 254 mm, 1840 grams 605 pages, 106 Tables, black and white; XXIX, 605 p.
Professional & Vocational  Learn More Postgraduate, Research & Scholarly Undergraduate

Box 9E. 1 Continued FIGURE 2. The C-S-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 Grime'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 C-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 Raunkiaer's, trait occur at the ``quick-return'' end of the leaf e- dimensions have the merit of capturing cont- nomics spectrum.


PSTD Plant physiology, PSTS Plant ecology

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