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Titolo:
Inter-specific variation of the biochemical limitation to photosynthesis and related leaf traits of 30 species from mountain grassland ecosystems under different land use
Autore:
Wohlfahrt, G; Bahn, M; Haubner, E; Horak, I; Michaeler, W; Rottmar, K; Tappeiner, U; Cernusca, A;
Indirizzi:
Innsbruck Univ, Inst Bot, A-6020 Innsbruck, Austria Innsbruck Univ Innsbruck Austria A-6020 t Bot, A-6020 Innsbruck, Austria Ctr Ecol Alpina, I-38040 Trento, Italy Ctr Ecol Alpina Trento Italy I-38040 Ecol Alpina, I-38040 Trento, Italy Europaische Akad Bozen, I-39100 Bozen, Italy Europaische Akad Bozen Bozen Italy I-39100 d Bozen, I-39100 Bozen, Italy
Titolo Testata:
PLANT CELL AND ENVIRONMENT
fascicolo: 10, volume: 22, anno: 1999,
pagine: 1281 - 1296
SICI:
0140-7791(199910)22:10<1281:IVOTBL>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
C-3 PLANTS; NITROGEN RELATIONS; CARBON-DIOXIDE; GAS-EXCHANGE; TERRESTRIAL ECOSYSTEMS; CARBOXYLASE-OXYGENASE; MESOPHYLL CONDUCTANCE; TRANSGENIC TOBACCO; CO2 ASSIMILATION; WATER-VAPOR;
Keywords:
leaf nitrogen; life form; P-ml; specific leaf area; V-cmax;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Life Sciences
Citazioni:
85
Recensione:
Indirizzi per estratti:
Indirizzo: Wohlfahrt, G Innsbruck Univ, Inst Bot, Sternwartestr 15, A-6020 Innsbruck,Austria Innsbruck Univ Sternwartestr 15 Innsbruck Austria A-6020 ria
Citazione:
G. Wohlfahrt et al., "Inter-specific variation of the biochemical limitation to photosynthesis and related leaf traits of 30 species from mountain grassland ecosystems under different land use", PL CELL ENV, 22(10), 1999, pp. 1281-1296

Abstract

The maximum rate of carboxylation (V-cmax) and the potential rate of RuBP regeneration (P-ml, which equals J(max)/4), as well as leaf nitrogen content (N-L) and specific leaf area (SLA), were studied in sun leaves of 30 species from differently managed mountain grassland ecosystems (abandoned areas, pastures and meadows) at three study areas in the Eastern Alps. A significant correlation between V-cmax and P-ml across the investigated species was observed. In comparison to a previous survey on the relationship between P-ml and V-cmax, the investigated species were found to invest a proportionally smaller amount of available resources into P-ml. Despite this close correlation between V-cmax and P-ml, variation in the V-cmax-N-L and P-ml-N-Lrelationships was large, indicating that the investigated species differedwidely in their respective nitrogen use efficiencies. Among the investigated species, dwarf shrubs were characterized by significantly lower values of V-cmax, P-ml and N-L compared to graminoids and forbs, which did not differ significantly from each other. Species from abandoned areas were found to be lower,vith respect to V-cmax, P-ml, N-L and SLA than species from pastures and meadows, which were not significantly different from each other.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 01:06:11