Understanding how communities of living organisms assemble has been a central question
in ecology since the early days of the discipline. Disentangling the different processes …

Alpine ecosystems (alpine tundra) occur at a range of air density, water availability and
seasonality worldwide on the treeless high terrain of mountains. They vary along geographic …

Summary 1 The stress‐gradient hypothesis (SGH) predicts that the frequency of facilitative
and competitive interactions will vary inversely across abiotic stress gradients, with …

High mountain ecosystems and their biota are governed by low‐temperature conditions and
thus can be used as indicators for climate warming impacts on natural ecosystems, provided …

Studies of facilitative interactions as drivers of plant richness along environmental gradients
often assume the existence of an overarching stress gradient that equally affects the …

Aim Metacommunity theories attribute different relative degrees of importance to dispersal,
environmental filtering, biotic interactions and stochastic processes in community assembly …

While the upward shift of plant species has been observed on many alpine and nival
summits, the reaction of the subalpine and lower alpine plant communities to the current …

Climate change will exacerbate the degree of abiotic stress experienced by semi-arid
ecosystems. While abiotic stress profoundly affects biotic interactions, their potential role as …

The study of species coexistence and community assembly has been a hot topic in ecology
for decades. Disentangling the hierarchical role of abiotic and biotic filters is crucial to …

The stress‐gradient hypothesis (SGH) predicts that the frequency of facilitative and
competitive interactions will vary inversely across abiotic stress gradients, with facilitation …