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A canopy perspective of community dynamics of an old-growth Pseudotsuga-Tsuga forest /Ishii, Hiroaki. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 106-116).
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Sources of variation in ecosystem carbon pools : a comparison of adjacent old- and second-growth forests /Gathany, Mark A. January 2004 (has links)
Thesis (M.S.)--Ohio University, August, 2004. / Includes bibliographical references (p. 35-40).
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Sources of variation in ecosystem carbon pools a comparison of adjacent old- and second-growth forests /Gathany, Mark A. January 2004 (has links)
Thesis (M.S.)--Ohio University, August, 2004. / Title from PDF t.p. Includes bibliographical references (p. 35-40)
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Spatial and Temporal Patterns of Natural Disturbance in Old-Growth Forests of Northern Maine, USAFraver, Shawn January 2004 (has links) (PDF)
No description available.
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Five centuries of structural development in an old-growth Douglas-fir stand in the Pacific Northwest : a reconstruction from tree-ring records /Winter, Linda Ellen. January 2000 (has links)
Thesis (Ph. D.)--University of Washington, 2000. / Vita. Includes bibliographical references (leaves 108-115).
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Stem respiration in old growth forests : An investigation into spatial variation in stem respiration between old growth forests in Sweden / Stamrespiration i naturskogar : En undersökning av rumslig variation i respiration mellan naturskogar i SverigeNordvall, Tim January 2023 (has links)
Stem respiration is an important part of respiration coming from different dead and living stem tissues of trees, which makes an important contribution to the overall forest carbon balance. This report investigated spatial differences regarding radial diffusion of CO2 through the bark on trees across different old growth forests in Sweden. Some key environmental factors such as precipitation, wetness classes, temperature, stem diameter, distance from the coast, and latitude have been analysed to find relationships with stem respiration. Measurements were carried out on the most common tree species in Sweden, Pinus sylvestris, Picea abies and Betula pubescens. This was done by using a portable gas analyser strapped to the trees. The results show statistical differences in stem respiration for each tree species between some of the forests, while no statistical differences were found between wetness classes within or between forests. The only environmental factor that was found to have a significant relationship with stem respiration was stem diameter for P. sylvestris. Overall, these results indicate that stem respiration rate is relatively insensitive to environmental variation, which potentially simplifies the process of extrapolating this flux over space and time. Knowledge about stem respiration is important for understanding of the carbon cycle and prediction of future global change. Therefore, it is crucial to gain extensive information and understanding about the external relationships that could influence stem respiration.
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The Biohydrology of Dysart WoodsBurgess, Macdonald H. 20 December 2006 (has links)
No description available.
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Foraging Habitat Selection by Ohio Bats: An Examination between Eastern Second Growth Forest, Eastern Old Growth Forest, and Pasture LandCarter, Richard T. 25 April 2008 (has links)
No description available.
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Landscape composition around northern spotted owl nests, central Cascade Mountains, OregonSwindle, Keith A. 16 October 1997 (has links)
This study describes the composition of forest landscapes surrounding
northern spotted owl (Strix occidentalis caurina) nests in the central Cascade
Mountains of Oregon. I compared forest composition around 126 owl nests in 70 pair
territories with forest composition around 119 points drawn randomly from all
terrestrial cover-types, and around 104 points drawn randomly from the old-forest
(closed canopy, > 80 yrs) cover type. All nest sites and random points were drawn
from U.S. Forest Service lands and were not drawn from privately owned lands or
Wilderness Areas.
Forest cover was classified on a Landsat Thematic Mapper image. I quantified
the percentage of old-forest within 200 concentric circular plots (0.04-5.0-km radii),
centered on each analyzed point, using a geographic information system. I used
logistic regression to make spatially-explicit inferences.
Owl nests were surrounded by more old-forest when compared to points
drawn randomly from all terrestrial cover types: there was significantly (P<0.05)
more old-forest around the owl nests in plots as large as 1.79 km in radius. When
compared to points drawn randomly from the old-forest cover type, owl nests were
surrounded by significantly (P<0.05) more old-forest in plots with 0.17-0.80-km
radii.
Exploratory analyses suggest that the landscape scales most pertinent to
northern spotted owl nest site positioning in this study area appear to be (in
descending order): the surrounding 10-15 ha (~200-m radius), the surrounding 25-30 ha
(~300-m radius), the surrounding 200 ha (800-m radius), and possibly the surrounding
700 ha (1,500-m radius).
This study supports the assertion that northern spotted owls are strongly
associated with older forests. The results also indicate that owl nests are most
associated with higher proportions of old-forest near the nest implying that the
arrangement of habitat is important for nest-site selection/positioning Since spotted
owls in the central Cascade Mountains of Oregon are known to have home-ranges that
average 1,769 ha, it is important to recognize that these results apply to nest-site
selection/positioning on the landscape and not to the amount of habitat necessary for
pair persistence or successful reproduction. / Graduation date: 1998
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Reconciliation in the forest? : an exploration of the conflict over the logging of native forests in the south-west of Western Australia /Worth, David John. January 2004 (has links)
Thesis (Ph.D.)--Murdoch University, 2004. / Thesis submitted to the Division of Science and Engineering. Bibliography: leaves 360-392.
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