Southeast, for example, foresters are using fire to bring back longleaf pine stands, which have suffered from clear-cutting
and a lack of controlled burning.
To assess whether the three silvicultural techniques (clear-cutting
, group-selection and single-tree selection harvest) have changed the composition of plant communities associated with mesic and dry-mesic slopes, canonical correspondence analysis (CCA; ter Braak, 1987) was used to evaluate environmental and disturbance gradient structure and the distribution of silvicultural openings (clear-cuts, group-selection openings, single-tree selection openings) and reference stands.
However, many are concerned that MB has turned to variable retention harvesting to escape the strict clear-cutting
regulations that have been put on clear-cutting
Past logging had rendered the river inhospitable to the fish because clear-cutting
of the area's steep slopes led to erosion and river-choking sediment, but a habitat restoration plan was in the works and the Forest Services forest management plans had pledged not to worsen the problem in the meantime.
It was easy for environmentalists to mobilize public opinion against clear-cutting
. And, when the public got angry the politicians took notice.
All my life I have heard of the evils of clear-cutting
forests: nice things like erosion, destruction of wildlife habitat, etc.
The environmental groups, in their lawsuit, had asked the court to halt the Second Show harvest, alleging that the BLM failed to analyze "the effects of clear-cutting
in conjunction with ongoing commercial logging and road construction in the same area."
However, the introduction of mechanized clear-cutting
techniques in the early 1970s has provoked controversy and confrontations with wildlife users and outdoor recreationists.
Environmentalists say the beef industry is the most important cause of deforestation from Mexico to Panama; mining, oil exploration and seasonal burning and grazing wreak havoc in Andean nations from Colombia to Chile; and clear-cutting
for crops and cattle in Brazil's rainforests and central plateau regions have seriously degraded fragile ecosystems.
Faced with the threat of clear-cutting
, the E-Team set a goal to protect the forest.
Eastern chipmunks are well-adapted to mature eastern deciduous forests (Elliott, 1978; Snyder, 1982) but occupy a variety of habitats, including forested landscapes modified by an even-aged system of clear-cutting
. Krull (1970) found no significant difference in densities of chipmunks between 20-yr-old clear-cut and mature ([greater than]100 yr old) uncut forest stands in central New York.
in large blocks or without due consideration for erosion, wildlife and stream quality, is uncalled for anywhere."
In the late 1980s, concern for the little nocturnal predator moved radical environmentalists to spike trees to protest timber clear-cutting
that destroyed the owl's habitat.
"We're talking about destruction of marine habitat that is, if not equivalent, at least in the ballpark with clear-cutting
forests on land." Not everyone concurs.
However, the minister admitted that the image of Canadian forestry has suffered in recent months from stories in the media of killer mud slides in British Columbia linked to clear-cutting
and of concerns about large clear-cuts affecting the climate.