Self-replacement in old-growth white pine forests of Temagami, Ontario

摘要: Abstract Surveys of both live and dead vegetation were conducted to examine long-term successional trends in old-growth white pine forest. The forest trend, for a period possibly up seven centuries, shows that has been the dominant species over this time indicating these forests have self-replacing. Size-class analysis was used as an indicator age-class structure. Results show stands are at least partially uneven-aged. uneven-aged condition, resulting from continuous recruitment, most likely facilitated by local disturbances such small surface fires, windthrown trees death large individual through biological or other agents. These findings cast some doubt on silvicultural theory catastrophic fire is only primary facilitator natural regeneration. Selection logging may make better use various non-catastrophic mechanisms It unlikely, however, condition can be maintained enhanced under any cutting regime. In addition production fibre, valuable components landscape functional ecological perspective scientific perspective.