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Examines the relationship among forest landscape dynamics, environmental factors and disturbance history in the Bull Run Basin, Oregon. Analysis of environmental factors and windthrow patterns; Disturbance type and forest composition and structure; Climate and landform controls; Use of biotic controls; Climate-disturbance and forest management interactions.

Examines forest response to catastrophic wind in the United States. Relationship of tree damage patterns with mortality and regeneration, vegetation recovery and ecosystem processes; Importance of pre-disturbance forest structure in determining severity of impact; Role of tree resilience and understory vegetation in ecosystem processes.

Investigates the windfall history and landscape patterns in the Andes of Tierra del Fuego in Argentina. Description of the study region; Dynamics of forests and wind; Distance limitations for the effective dispersal of seeds; Factors involved in blowdown susceptibility; Development of landscape patterns; Interactions between the wind and landscape patterns.

Studies the patterns and mechanisms of regeneration of a 400-hectare wind-throw in an old-growth beech-hemlock forest caused by a tornado on May 31, 1995. Percent cover and density of woody stems; Seedling demography; Plant community response to the disturbance.

Describes and quantifies the widespread occurrence of large blowdowns in mature Amazonian forest in Brazil. Related studies; Confirmation of aging of individual blowdowns; Occurrence of blowdowns throughout the Amazon.