Warming had contrasting effects on the importance of facilitative interactions with a cushion nurse species on native and non-native species in the high-Andes of central Chile

Alpine habitats are regarded as particularly vulnerable to the effects of climate change. On one hand, global warming is supposed to contributes to alpine environments becoming less stressful. On the other hand, altered snowpack due to warmer temperatures can intensify the stress in these habitats. The presence of non-native plants on some of these habitats is due to the facilitative effects exerted by native nurse plants, becoming an additional threat. According to the stress gradient hypothesis the importance of facilitative interactions with nurse species is expected to diminish as environmental harshness decreases due to climate change, yet remains important if climate change heightens the stress in alpine habitats. However, the responses also depend on climate change's impact on the nurse species. We conducted an experimental warming experiment in the Andes of the central Chile to assess the effects of warmer temperatures on the growth, reproduction and photochemical efficiency of ..., , , # Warming had contrasting effects on the importance of facilitative interactions with a cushion nurse species on native and non-native species in the high-Andes of central Chile

## Description of the data and file structure

This data set contains two excel files. The first entitled \"warming effects on cushions contains (on separate worksheets) all the variables measured on cushions with and without OTC. This file contains the following variables per worksheet:

\- Biomass: warming (OTC/sin OTC), replicate, Rosette biomass (mg), New leaves biomass (mg), Brachyblast biomass (mg)\
\- Fruits: replicate, warming (OTC/sin OTC), number of fruits per 10 x 10 cm quadrant\
\- Fluorescence: replicate, warming (OTC/sin OTC), maximum photochemical efficiency, Electron transport rate (ETR) and non-photochemical quenching (NPQ) measured as indicated in the paper.\
n/a means data not available\
\- Photosynthesis: replicate, warming (OTC/sin OTC), respiration (Rd) and Photosynthesis (Pn) measured as...