Migration corridors for alpine plants among the 'sky islands' of eastern Africa: do they, or did they exist?

Chala D, Zimmermann NE, Brochmann C & Bakkestuen V
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Chala, D., Zimmermann, N. E., Brochmann, C., & Bakkestuen, V. (2017). Migration corridors for alpine plants among the 'sky islands' of eastern Africa: do they, or did they exist? Alpine Botany, 127(2), 133-144. https://doi.org/10.1007/s00035-017-0184-z