Greenhouse- and Field-Measured Plant-Soil Feedbacks Are Not Correlated

Frontiers in Environmental Science

卷:7

Johannes Heinze¹  Conrad Schittko¹  Josephine Grenzer³  Andrew Kulmatiski³  Leslie E. Forero³ 

[1] Berlin-Brandenburg Institute of Advanced Biodiversity Research, Berlin, Germany;

[2] Biodiversity Research/Systematic Botany, University of Potsdam, Potsdam, Germany;

[3] Department of Wildland Resources and the Ecology Center, Utah State University, Logan, UT, United States;

关键词: plant-soil feedback;    environmental factors;    above-belowground interactions;    experimental environment;    field experiment;    greenhouse experiment;   

DOI  :  10.3389/fenvs.2019.00184

来源: DOAJ

【 摘 要 】

Plant-soil feedbacks (PSFs) have become a commonly invoked mechanism of plant coexistence and abundance. Yet, most PSF experiments have been performed in greenhouse conditions. To test whether or not greenhouse-measured PSF values are of similar magnitude and positively correlated with field-measured PSFs, we compared PSF values from five different studies that measured PSF values in both greenhouse and field conditions. For 36 plant species, greenhouse-measured PSF values were larger than and not positively correlated with field-measured PSF values. Similarly, these 36 species produced 269 soil-specific PSF values, and for each site there was no positive correlation between these greenhouse- and field-measured PSF values. While PSFs were observed in both greenhouse and field conditions, results provided no support at the soil, site or species level that a positive correlation exists between greenhouse- and field-measured PSF. Further, greenhouse-measured PSF appear to overestimate field-measured PSF. Although from five studies, results strongly suggest that field experiments are needed to understand the role of PSFs in plant communities in natural settings.

【 授权许可】

Unknown