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- Title
Evidence of the ‘plant economics spectrum’ in a subarctic flora.
- Authors
Freschet, Grégoire T.; Cornelissen, Johannes H. C.; van Logtestijn, Richard S. P.; Aerts, Rien
- Abstract
1. A fundamental trade-off among vascular plants between traits inferring rapid resource acquisition and those leading to conservation of resources has now been accepted broadly, but is based on empirical data with a strong bias towards leaf traits. Here, we test whether interspecific variation in traits of different plant organs obeys this same trade-off and whether within-plant trade-offs are consistent between organs. 2. Thereto, we measured suites of the same chemical and structural traits from the main vegetative organs for a species set representing aquatic, riparian and terrestrial environments including the main vascular higher taxa and growth forms of a subarctic flora. The traits were chosen to have consistent relevance for plant defence and growth across organs and environments: carbon, nitrogen, phosphorus, lignin, dry matter content, pH. 3. Our analysis shows several new trait correlations across leaves, stems and roots and a striking pattern of whole-plant integrative resource economy, leading to tight correspondence between the local leaf economics spectrum and the root ( r = 0.64), stem ( r = 0.78) and whole-plant ( r = 0.93) economics spectra. 4. Synthesis. Our findings strongly suggest that plant resource economics is consistent across species’ organs in a subarctic flora. We provide thus the first evidence for a ‘plant economics spectrum’ closely related to the local subarctic ‘leaf economics spectrum’. Extending that concept to other biomes is, however, necessary before any generalization might be made. In a world facing rapid vegetation change, these results nevertheless bear considerable prospects of predicting below-ground plant functions from the above-ground components alone.
- Subjects
SUBARCTIC region; BOTANY; BIOLOGICAL variation; PLANT growth; PLANT ecology
- Publication
Journal of Ecology, 2010, Vol 98, Issue 2, p362
- ISSN
0022-0477
- Publication type
Article
- DOI
10.1111/j.1365-2745.2009.01615.x