Boreal forest dynamics have been long characterized as being controlled by large-scale fire regimes. When fire cycles are short, trees are killed and recruited primarily due to these events. However, where fire cycles exceed the longevity of the trees, gap dynamics will shape the composition and/or structure of these forests. Current evidence suggests that many regions of the boreal forest currently experience long periods without fire (especially in Maritime regions and Eurasia) and that climate changes are also increasing this period. The high latitudes and generalist nature of these forests results in gap dynamics in boreal forests having effects unique to forests in other parts of the world. Gap dynamics have however been observed to occur and effect stand development processes in both shade intolerant and mono-specific stands as well as leading to species replacement in mixedwood forests.