Here at SFASU, research on the wildlife impacts of clearcutting
has generated some interesting initial findings.
Following a 5-year pre-treatment period of baseline data collection, three sites received even-age management in which clearcutting
occurred on ~10-15% of the site in 7-9 tracts ranging from 1-14 ha in size (Kabrick et al.
And studies show that clearcutting
releases more greenhouse gases into the atmosphere than any other forestry disturbance, including fire.
The resulting increase in industrial scale clearcutting
is adversely affecting many species of plants, animals, and birds that depend on mature forested landscapes.
xix) The author notes that this amounts to a history of clearcutting
from 1880 to 1965 because that was the primary method of harvesting following the mechanization of logging.
For example, in the Boreal Forest Region of Ontario, these guidelines recommend: (1) clearcutting
in blocks of 80-130 ha, leaving buffer zones between cuts; (2) where clearcuts exceed 100 ha and moose utilising portions of the cutover would be more than 200 m from suitable cover, conifer shelter patches of at least 3-5 ha should be provided; (3) shelter patches should be spaced 300-400 m apart; (4) cuts should not exceed 400 m in width in late winter concentration areas for moose; and (5) a 120 m reserve should be left around aquatic feeding areas, mineral licks, and calving sites.
, like malaria and the subjugation of Indians, is not a thing of the past--it's globally pervasive, rapacious, and rapidly spreading in the 1990s.
by the massive logging company MacMillan/Bloedel
Diversity generally peaked the third year following clearcutting
and then subsided.
Probably the single most controversial and divisive issue that the Forest Service has had to deal with is the forest management practice of clearcutting
Small-scale, rotation clearcutting
may be a favorable management technique for Golden-winged Warblers when suitable regeneration (i.
The impacts of old-growth clearcutting
, forest conversion, and the introduction of invader species as well as the status of endangered species, roadless areas, and river and stream health are reviewed with blunt clarity.