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Black Bears - use pine forests for their dens. Timber harvesting, as well as land cleared for agriculture and urban expansion, has severely decreased the available black bear habitat.  In some areas of Minnesota, for example, white pines are being replanted to help increase the diminishing population of black bears.
	White Pine weevil - a parasite that feeds on the white pine, and other evergreens.  The weevil sticks its long mouth into the tree, and eats the softer inner tissues.  They lay their eggs in the tree and larvae tunnel into the tree cutting off much of the trees water supply, causing it to wilt and often die.
Kirtland Warbler -- a small bird who uses the jack pine for its nest.  Jack pines are dependent on fires for their survival, but humans have dramatically decreased the number of fires -- and subsequently decreased Kirtland warbler habitat.  The white pine is moving into regions once covered with jack pine and further reducing Kirtland warbler nesting sites.