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. 2016 Jun 27;6:28542. doi: 10.1038/srep28542

Table 1. List of the candidate variables tested as eligible predictors of presence of Carex foetida in the core area (Piemonte region, Northern Italy) and in the potential site (i.e. peripheral area) for species translocation.

Candidate variable Code Data type Units Used for area (*)
Annual heat:moisture index AHM Continuous °C mm−1 Core and peripheral
Degree-days below 0 °C DD0 Continuous °C Core and peripheral
Frost-free period FFP Continuous unitless Core and peripheral
Mean annual precipitation MAP Continuous mm Core and peripheral
Mean annual temperature MAT Continuous °C Core and peripheral
Precipitation as snow PAS Continuous mm Core and peripheral
Summer heat:moisture index SHM Continuous °C mm−1 Core and peripheral
Summer (Jun.-Aug.) mean T° TAVE_SM Continuous °C Core and peripheral
Soil type SOIL Categorical 2 categories Peripheral
Topographic wetness index TWI Continuous m2 m−1 Peripheral

*Depending on the analysis of variable contributions (only if permutation importance was >1).