. The Canadian field-naturalist. 558 The Canadian Field-Naturalist Vol. 112. Hugh Raup relaxing at his home in May 1979 (photo by George Argus). from fems, fungi and lichens to conifers, characterizing vegetation patterns, and analyzing the soils, environment, and geomorphology that control ecosystems at high latitudes. "As Hugh was immersed in his northern studies, ecologists became embattled in arguments con- cerning the stability of the environment and vegatation, the organization of biotic communities, and the relative importance of disturbance in regulating ecosystem process. One est
. The Canadian field-naturalist. 558 The Canadian Field-Naturalist Vol. 112. Hugh Raup relaxing at his home in May 1979 (photo by George Argus). from fems, fungi and lichens to conifers, characterizing vegetation patterns, and analyzing the soils, environment, and geomorphology that control ecosystems at high latitudes. "As Hugh was immersed in his northern studies, ecologists became embattled in arguments con- cerning the stability of the environment and vegatation, the organization of biotic communities, and the relative importance of disturbance in regulating ecosystem process. One established view held that equilibrium conditions were the norm, that vegetation developed progressively through a process of "succession" towards relatively stable communities, and that disturbances were rare. This view pro- vided a simple framework for interpreting past changes, predicting future ones, and relating spatial patterns of vegetation to temporal sequences. However, based on his familiarity with the importance of processes in natural ecosystems disturbance and an evolutionary understanding of biological species, Hugh developed alternative notions that shaped his fumre work and comprised one of his major contributions to ecological science. "Through the course of his career, Hugh's interests broadened beyond plant biology to embrace such topics as Indian archaeology, the role of frost action, lake-level change and winter injury in northern ecosystems, and the influence of natural disturbance and historical land use on forests in Cuba, Honduras, and New England. At the Harvard Forest his tenure as Director, and the studies of his students and colleagues, provided a natural transition between the early research in silviculture and ecological forestry by Richard Fisher and the broad-scale ecosystem work that figures promi- nently into the current Long Term Ecological Research Program. "Hugh Raup revelled in his role as contrarian and outspoken critic o
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