SongHuangGeEtAl2020

Référence

Song, H., Huang, J., Ge, L., Peng, C., Zhao, P., Guo, X., Li, T., Shen, X., Zhu, Q., Liu, W., Wei, H., Wang, M. (2020) Interspecific difference in N:P stoichiometric homeostasis drives nutrient release and soil microbial community composition during decomposition. Plant and Soil, 452(1-2):29-42. (Scopus )

Résumé

Background and aims: Tree species can produce litter with large variation in nitrogen to phosphorus (N:P) ratios. Here we examined how litter N:P ratios affected decomposer community composition and nutrient release for two contrasting tree species in the Qinling Mountains, China. Methods: Two-year-old Quercus aliena var. acuteserrata and Pinus tabulaeformis seedlings were fertilized using nutrient solutions with varying N:P ratios for four months. The obtained litters with contrasting N:P stoichiometry were left to decompose on nutrient-free quartz sand for 12 weeks with microbial inoculum. Then, the post-decomposition microbial community composition was determined using a phospholipid fatty acid (PLFA) analysis. Results: The Q. aliena litter stoichiometry was more homeostatic than P. tabulaeformis litter. Litter N:P ratio was significantly related to litter nutrient loss and mass loss for P. tabulaeformis but not always for Q. aliena. The soil microbial community compositions showed larger fungal to bacterial (F:B) ratios with increasing litter N:P ratios for Q. aliena but not P. tabulaeformis. Conclusion: Litter N:P ratio, as determined by species-specific homeostasis, showed an interspecific difference to affect the patterns of litter decomposition dynamics, as well as related soil microbial community composition. The less variation in the soil microbial community composition than plant litter stoichiometric characteristics during decomposition is likely an important mechanism that regulates the balance of biogeochemical cycles in the Qinling Mountains. © 2020, Springer Nature Switzerland AG.

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@ARTICLE { SongHuangGeEtAl2020,
    AUTHOR = { Song, H. and Huang, J. and Ge, L. and Peng, C. and Zhao, P. and Guo, X. and Li, T. and Shen, X. and Zhu, Q. and Liu, W. and Wei, H. and Wang, M. },
    JOURNAL = { Plant and Soil },
    TITLE = { Interspecific difference in N:P stoichiometric homeostasis drives nutrient release and soil microbial community composition during decomposition },
    YEAR = { 2020 },
    NOTE = { cited By 0 },
    NUMBER = { 1-2 },
    PAGES = { 29-42 },
    VOLUME = { 452 },
    ABSTRACT = { Background and aims: Tree species can produce litter with large variation in nitrogen to phosphorus (N:P) ratios. Here we examined how litter N:P ratios affected decomposer community composition and nutrient release for two contrasting tree species in the Qinling Mountains, China. Methods: Two-year-old Quercus aliena var. acuteserrata and Pinus tabulaeformis seedlings were fertilized using nutrient solutions with varying N:P ratios for four months. The obtained litters with contrasting N:P stoichiometry were left to decompose on nutrient-free quartz sand for 12 weeks with microbial inoculum. Then, the post-decomposition microbial community composition was determined using a phospholipid fatty acid (PLFA) analysis. Results: The Q. aliena litter stoichiometry was more homeostatic than P. tabulaeformis litter. Litter N:P ratio was significantly related to litter nutrient loss and mass loss for P. tabulaeformis but not always for Q. aliena. The soil microbial community compositions showed larger fungal to bacterial (F:B) ratios with increasing litter N:P ratios for Q. aliena but not P. tabulaeformis. Conclusion: Litter N:P ratio, as determined by species-specific homeostasis, showed an interspecific difference to affect the patterns of litter decomposition dynamics, as well as related soil microbial community composition. The less variation in the soil microbial community composition than plant litter stoichiometric characteristics during decomposition is likely an important mechanism that regulates the balance of biogeochemical cycles in the Qinling Mountains. © 2020, Springer Nature Switzerland AG. },
    AFFILIATION = { Center for Ecological Forecasting and Global Change, College of Forestry, Northwest A&F University, Yangling, Shannxi, China; Départment des Sciences Biologiques, Institut des Sciences de l’Environnement, Université du Québec à Montréal, Montréal, QC, Canada; College of Hydrology and Water Resources, Hohai University, Nanjing, Jiangsu, China; Medical College, Baoji Vocational Technology College, Baoji, Shannxi, China; Key Laboratory of Geographical Processes and Ecological Security in Changbai Mountains, Ministry of Education, School of Geographical Sciences, Northeast Normal University, Changchun, Jilin, China; State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, Institute for Peat and Mire Research, Northeast Normal University, Changchun, Jilin, China; Jilin Provincial Key Laboratory for Wetland Ecological Processes and Environmental Change in the Changbai Mountains, Changchun, Jilin, China },
    AUTHOR_KEYWORDS = { Ecological stoichiometry; Litter decomposition; Litter N:P ratio; PLFA; Soil microbial community composition },
    DOCUMENT_TYPE = { Article },
    DOI = { 10.1007/s11104-020-04513-4 },
    SOURCE = { Scopus },
    URL = { https://www.scopus.com/inward/record.uri?eid=2-s2.0-85085303097&doi=10.1007%2fs11104-020-04513-4&partnerID=40&md5=eceb4af60fe1eed13621944ecec685b8 },
}

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