Ecosystem classifications based on summer and winter conditions.
Margaret E.; Andrew, M.E.; Nelson, T.A.; Wulder, M.A.; Hobart, G.W.; Coops, N.C. & Farmer, C.J.Q. (2013). Ecosystem classifications based on summer and winter conditions. Environ Monit Assess (2013) 185:3057–3079.
DOI 10.1007/s10661-012-2773-z.