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Contrasting photosynthetic characteristics of forest vs. savanna species (Far North Queensland, Australia)

Bloomfield, K.J.; Domingues, T.F.; Saiz, G.; Bird, M.I.; Crayn, D.M.; Ford, A.; Metcalfe, D.J.; Farquhar, G.D.; Lloyd, J.

Forest and savanna are the two dominant vegetation types of the tropical regions with very few tree species common to both. At a broad scale, it has long been recognised that the distributions of these two biomes are principally governed by precipitation and its seasonality, but with soil physical and chemical properties also potentially important. For tree species drawn from a range of forest and savanna sites in tropical Far North Queensland, Australia, we compared leaf traits of photosynthetic capacity, structure and nutrient concentrations. Area-based photosynthetic capacity was higher for the savanna species with a steeper slope to the photosynthesis ↔ nitrogen (N) relationship compared with the forest group. Higher leaf mass per unit leaf area for the savanna trees derived from denser rather than thicker leaves and did not appear to restrict rates of light-saturated photosynthesis when expressed on either an area or mass basis. Median ratios of foliar N to phosphorus (P) were relatively high (>20) at all sites, but we found no evidence for a dominant P limitation of photosynthesis for either forest or savanna trees. A parsi ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000049253
Veröffentlicht am 13.04.2018
DOI: 10.5194/bg-11-7331-2014
Zitationen: 9
Web of Science
Zitationen: 9
Zugehörige Institution(en) am KIT Fakultät für Physik (PHYSIK)
Institut für Meteorologie und Klimaforschung - Atmosphärische Umweltforschung (IMK-IFU)
Publikationstyp Zeitschriftenaufsatz
Jahr 2014
Sprache Englisch
Identifikator ISSN: 1726-4170, 1726-4189
KITopen-ID: 1000049253
HGF-Programm 12.02.01 (POF II, LK 01)
Erschienen in Biogeosciences
Band 11
Heft 24
Seiten 7331-7347
Nachgewiesen in Scopus
Web of Science
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