tree seedling responses to environmental factors at alpine and arctic treeline

Includes data collected from studies on tree seedling survival, growth and germination at alpine and Arctic treelines. Includes means, standards and sample size for control and treatment of various field manipulations as well as various moderators. Also includes data from a wider range of papers that can be used to evaluate if tree seedlings and seed germination responds positively, negatively or neutrally to a range of environmental factors.