1992
DOI: 10.1071/pp9920019
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Photosynthetic Response to Light and Nutrients in Sun-Tolerant and Shade-Tolerant Rainforest Trees. II. Leaf Gas Exchange and Component Processes of Photosynthesis

Abstract: Species with contrasting shade tolerance were grown under three light by two nutrient treatments. Gas exchange by intact leaves, leaf disk O2 evolution and chlorophyll fluorescence were measured. In shade-tolerant evergreen species (Argyrodendron sp., A. trifoliolatum and Flindersia brayleyana) photosynthetic activity of seedlings in air at light saturation (A) was lower under weak (30 pmol quanta m-2 day-1 ), compared with medium (130) or strong light (535). In Toona australis, a shade-intolerant and deciduou… Show more

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Cited by 109 publications
(79 citation statements)
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“…Apparent quantum yield and F v /F m ratio at midday of both plants studied were very low when compared to rainforest climax species and did not show a complete recover at pre-dawn (Thompson et al 1992, Langenheim et al 1984, Lovelock et al 1994, Zipperlen & Press 1996, Barker et al 1997, Scholes et al 1997. However, with the exception of similar light levels in the studies of Langenheim et al (1984) and Ishida et al (1999), daily and maximum PFD under HL in our experiment were much higher than the high light treatments of those studies.…”
Section: Speciescontrasting
confidence: 51%
See 1 more Smart Citation
“…Apparent quantum yield and F v /F m ratio at midday of both plants studied were very low when compared to rainforest climax species and did not show a complete recover at pre-dawn (Thompson et al 1992, Langenheim et al 1984, Lovelock et al 1994, Zipperlen & Press 1996, Barker et al 1997, Scholes et al 1997. However, with the exception of similar light levels in the studies of Langenheim et al (1984) and Ishida et al (1999), daily and maximum PFD under HL in our experiment were much higher than the high light treatments of those studies.…”
Section: Speciescontrasting
confidence: 51%
“…stilbocarpa under LL was very high when compared with other semideciduous (Kitajima 1994) and rainforest climax species grown under both high and low light levels (Langenheim et al 1984;Ramos & Grace 1990, StraussDebenedetti & Bazzaz 1991, Turnbull 1991, Thompson et al 1992, Tinoco-Ojanguren & Pearcy 1995, Zipperlen & Press 1996, Barker et al 1997, Sholes et al 1997. It is also interesting to compare the results of H. courbaril var.…”
Section: Discussionmentioning
confidence: 99%
“…Plantas a pleno sol alocaram maiores percentuais de matéria seca para o sistema radicular, sendo este tipo de comportamento observado por vários outros autores (SOUZA-SILVA et al, 1999;PAEZ et al, 2000). Esta menor distribuição de matéria seca para raízes sob baixas condições de luminosidade é bem conhecida e provavelmente reflete uma resposta a atributos que melhoram o ganho de carbono sobre irradiância reduzida como aumento na área foliar, ou que reflita uma estratégia buscando luminosidade como o aumento na altura (THOMPSON et al, 1992;WALTERS et al, 1993).…”
Section: Resultsunclassified
“…As espécies arbóreas variam grandemente na sua capacidade de responder à alteração na disponibilidade de luz (Thompson et al 1992). As respostas apresentadas pelas plantas à variação na disponibilidade de luz costumam envolver alterações nas características das folhas relacionadas à fotossíntese, como a razão clorofila a/b, espessura foliar, teor de nitrogênio, densidade estomática, e/ou alterações na proporção de tecidos fotossintetizantes em relação aos não fotossintetizantes, levando à modificação na distribuição de biomassa (Popma & Bongers 1991, Osunkoya et al 1994.…”
Section: Introductionunclassified