. Breeding-bird populations in the jack pine and mixed jack pine/deciduous stands in central Ontario. Forest birds; Birds; Jack pine; Birds; Bird populations; Forest management. 9'- Fig. 2. New growth of pines (P-1); trees were about seven years old when the area was censused in 1985. and/or aerially seeded and subsequently thinned to remove almost all trees but pines. A small number of trembling aspens persisted in a few tiny groves. One sec- tion of pines about 100 m wide was very dense because it was never thinned. A few white spruce, from seedlings to nearly the same height as the pines, p
. Breeding-bird populations in the jack pine and mixed jack pine/deciduous stands in central Ontario. Forest birds; Birds; Jack pine; Birds; Bird populations; Forest management. 9'- Fig. 2. New growth of pines (P-1); trees were about seven years old when the area was censused in 1985. and/or aerially seeded and subsequently thinned to remove almost all trees but pines. A small number of trembling aspens persisted in a few tiny groves. One sec- tion of pines about 100 m wide was very dense because it was never thinned. A few white spruce, from seedlings to nearly the same height as the pines, persisted. No stand- ing dead trees were present in this area. Tall shrubs (alder, willow, and pincherry) were thinly distributed throughout the area. The ground had a nearly complete cover of blueberry and sheep laurel as well as smaller herbaceous plants and moss. Sedges and some Labrador tea were found in a few places. The ground was very level almost throughout. Censuses were conducted yearly from 1985 to 1991. The pines were about 20 years old in the first year of census- ing. A number of nest boxes were placed in this habitat. These were readily accepted by Boreal Chickadee and no doubt contributed to the population. P-3. Medium-aged Pine (Fig. 4) A plantation of medium-aged pines on the south side of Hwy 560, about 25 km east of Hwy 144 and 27 to 28 km southeast of Gogama (UTM squares 17MC6057 and 6157; map 41 P/5, Garvey Twp.). This area was almost pure jack pine, although a few white spruce trees were found. There were almost no dead trees standing in the entire area. Trees were relative- ly evenly spaced and provided nearly complete canopy cover. Tall deciduous shrubs (alder and pincherry) were few to absent except for an occasional patch where they were numerous. The ground was covered almost com- pletely with sheep laurel and blueberry bushes amongst which a variety of low herbaceous plants, lichens, and mosses could be found. This area was nearly level. Censuses wer
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Keywords: ., bookcentury1900, booksubjectbirds, booksubjectforestmanagement
