Catchments on the cusp? Structural and functional change in northern ecohydrology. Issue 5 (6th February 2013) - Tetzlaff, D.; Soulsby, C.; Buttle, J.; Capell, R.; Carey, S. K.; Laudon, H.; McDonnell, J.; McGuire, K.; Seibert, S.; Shanley, J.; Tetzlaff, Doerthe; Carey, Sean; et al.