Adaptation of epiphytic bryophytes in the understorey attributing to the correlations and trade-offs between functional traits
| 论文编号: | |||||||||
| 作者: | Chen X | ||||||||
| 刊物名称: | Journal of Bryology | ||||||||
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| 论文题目英文: | Adaptation of epiphytic bryophytes in the understorey attributing to the correlations and trade-offs between functional traits | ||||||||
| 年: | May 2016 | ||||||||
| 卷: | online | ||||||||
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| 联系作者: | Liu WY | ||||||||
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| 影响因子: | 1.647 | ||||||||
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| 摘要: | This study explores adaptive strategies of epiphytic bryophytes in the understorey by investigating the photosynthetic characteristics, pigment concentrations and nutrient stoichiometry, as well as other functional traits of three trunk-dwelling bryophytes in a subtropical montane cloud forest in SW China. The results showed that their light-saturated net photosynthetic rate (Anmax−L), light saturation point (Isat), light compensation point (Ic) and dark respiration rate (Rd) were ca 0.55, 106.72, 4.17 and 0.25 μmol m−2 s−1, respectively. Furthermore, the samples demonstrated photosynthetic down-regulation under high irradiance. These photosynthetic characteristics can be explained by higher total chlorophyll concentrations, specific leaf area, chlorophyll per unit leaf N (Chl/N), lower ratio of chlorophyll a to chlorophyll b (Chl a/b) and photosynthetic nitrogen-use efficiency. We suggest that the bryophytes adapted to the shaded understorey microhabitats through a series of correlations and trade-offs between functional traits. | ||||||||
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