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title: Physiological Responses of Two Epiphytic Bryophytes to Nitrogen, Phosphorus and Sulfur Addition in a Subtropical Montane Cloud Forest
author: Chen, Xi;  Liu, Wen-yao;  Song, Liang;  Li, Su;  Wu, Yi;  Shi, Xian-meng;  Huang, Jun-biao;  Wu, Chuan-sheng
Issued Date: 2016
Abstract: Atmospheric depositions pose significant threats to biodiversity and ecosystem function. However, the underlying physiological mechanisms are not well understood, and few studies have considered the combined effects and interactions of multiple pollutants. This in situ study explored the physiological responses of two epiphytic bryophytes to combined addition of nitrogen, phosphorus and sulfur. We investigated the electrical conductivity (EC), total chlorophyll concentration (Chl), nutrient stoichiometry and chlorophyll fluorescence signals in a subtropical montane cloud forest in south-west China. The results showed that enhanced fertilizer additions imposed detrimental effects on bryophytes, and the combined enrichment of simulated fertilization exerted limited synergistic effects in their natural environments. On the whole, EC, Chl, the effective quantum yield of photosystem II (FPSII) and photochemical quenching (qP) were the more reliable indicators of increased artificial fertilization. However, conclusions on nutrient stoichiometry should be drawn cautiously concerning the saturation uptake and nutrient interactions in bryophytes. Finally, we discuss the limitations of prevailing fertilization experiments and emphasize the importance of long-term data available for future investigations.
Source: PLOS ONE
Related URLs: 10.1371/journal.pone.0161492
Appears in Collections:恢复生态学组_期刊论文

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Recommended Citation:
Chen, Xi,Liu, Wen-yao,Song, Liang,et al. Physiological Responses Of Two Epiphytic Bryophytes To Nitrogen, Phosphorus And Sulfur Addition In A Subtropical Montane Cloud Forest[J]. Plos One,2016,11(8):-.

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