Open Access. Powered by Scholars. Published by Universities.®

Life Sciences Commons

Open Access. Powered by Scholars. Published by Universities.®

2019

USDA National Wildlife Research Center - Staff Publications

Black bear

Articles 1 - 1 of 1

Full-Text Articles in Life Sciences

Estimating Economic Impact Of Black Bear Damage To Western Conifers At A Landscape Scale, Jimmy D. Taylor, Kristina N. Kline, Anita T. Morzillo Jan 2019

Estimating Economic Impact Of Black Bear Damage To Western Conifers At A Landscape Scale, Jimmy D. Taylor, Kristina N. Kline, Anita T. Morzillo

USDA National Wildlife Research Center - Staff Publications

Black bear (Ursus americanus) damage to trees in the Pacific Northwest is common, although volume and economic losses are unknown. Common measures to quantify bear damage to conifers at large scales rely solely on aerial estimates of red tree crowns (caused by complete girdling) and broad assumptions about stand characteristics. We surveyed 122 vulnerable stands in the Coast Range and western Cascades of Oregon using both aerial surveys and ground surveys. Then, we modeled 4 damage scenarios (Salvage; Total Loss; Root Disease; and Combined Damage) with the Forest Vegetation Simulator (FVS) growth and yield model and the Fuel Reduction Cost ...