Climate Change Data Portal
DOI | 10.1016/j.jaridenv.2019.04.019 |
Is the length of the drying period critical for photosynthesis reactivation in lichen and moss components of biological soil crusts? | |
Munzi, Silvana1; Varela, Zulema1,2; Paoli, Luca3,4 | |
发表日期 | 2019 |
ISSN | 0140-1963 |
EISSN | 1095-922X |
卷号 | 166页码:86-90 |
英文摘要 | Lichens and mosses represent the macroscopic components of biological soil crusts (biocrusts). Their ability to exploit short periods of water availability and reversibly deactivate metabolism is crucial for their growth and survival. In this work we investigated photosynthesis reactivation, respectively after long (65-66 days) and short (15 days) dry periods, in lichen and moss species widespread in two Mediterranean environments (Portugal and Italy). Chlorophyll alpha fluorescence emission of the samples was investigated and the parameter Fv/Fm, an indicator of vitality of photosynthetic organisms, was used as a proxy for photosynthesis reactivation. The fruticose lichens Cladonia convoluta and C. rangiformis, and the moss Pleurochaete squarrosa, typical of Mediterranean environments, showed a significantly slower reactivation of photosynthetic activity when subjected to a longer period of drought. Conversely, the alien invasive moss Campylopus introfiexus was not affected by prolonged dry conditions. The study showed that drought duration influences the reactivation of photosynthetic activity in terricolous lichens and mosses forming biocrusts in re-hydration cycles. These results indicate the likelihood of a reduction in biocrust productivity as a consequence of climate change in Mediterranean drylands. |
WOS研究方向 | Environmental Sciences & Ecology |
来源期刊 | JOURNAL OF ARID ENVIRONMENTS
![]() |
文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/100050 |
作者单位 | 1.Univ Lisbon, Fac Ciencias, CE3c, Bloco C2,6 Piso,Sala 2-6-13, P-1749016 Lisbon, Portugal; 2.Univ Santiago de Compostela, Dept Funct Biol, Ecol Unit, Fac Biol, Lope Gomez de Marzoa S-N, La Coruna 15702, Spain; 3.Univ Pisa, Dept Biol, Via Luca Ghini,13, I-56126 Pisa, Italy; 4.Univ Pisa, Ctr Climat Change Impact, CIRSEC, Via Borghetto 80, I-56124 Pisa, Italy |
推荐引用方式 GB/T 7714 | Munzi, Silvana,Varela, Zulema,Paoli, Luca. Is the length of the drying period critical for photosynthesis reactivation in lichen and moss components of biological soil crusts?[J],2019,166:86-90. |
APA | Munzi, Silvana,Varela, Zulema,&Paoli, Luca.(2019).Is the length of the drying period critical for photosynthesis reactivation in lichen and moss components of biological soil crusts?.JOURNAL OF ARID ENVIRONMENTS,166,86-90. |
MLA | Munzi, Silvana,et al."Is the length of the drying period critical for photosynthesis reactivation in lichen and moss components of biological soil crusts?".JOURNAL OF ARID ENVIRONMENTS 166(2019):86-90. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。