A 183-Year History of Fire and Recent Fire Suppression Impacts in Select Pine and Oak Forest Stands of the Menominee Indian Reservation, Wisconsin

TLDR: In this article, the impacts of recent fire suppression in pine and oak stands on the Menominee Indian Reservation in northeast Wisconsin were studied and a total of 93 fire events with a fire-return interval (FRI) of 5.9-17.7 were recorded across all stands before fire suppression activities in 1935.

Abstract: Due to the paucity of long-term fire chronologies in the upper Midwest, we studied basal cross-sections dating back to 1822 and the impacts of recent fire suppression in pine and oak stands on the Menominee Indian Reservation in northeast Wisconsin. A total of 93 fire events with a fire-return interval (FRI) of 5.9–17.7 y were recorded across all stands before fire suppression activities in 1935. After 1935, we recorded 29 fires. Most stands have only burned 0–3 times since 1935, and only four of 16 stands yielded enough fire years to calculate FRIs. Superposed Epoch Analysis (SEA) determined significantly lower Palmer Drought Severity Index (PDSI) values 1 y before individual fire years. Fire wounding occurred primarily in the dormant season and average tree diameter at time of wounding ranged from 7–30 cm. Current forest composition was dominated by white pine (Pinus strobus L.) and red maple (Acer rubrum L.) overstories, whereas seedlings and saplings were predominantly eastern hemlock (Tsuga ...