Author: United States. Forest ServicePublisher:
ISBN:
Category : Paper birch
Languages : en
Pages : 8
Book Description
Paper Birch
Author: United States. Forest ServicePublisher:
ISBN:
Category : Paper birch
Languages : en
Pages : 8
Book Description
Paper Birch - Betula Papyrifera Marsh
Author: United States. Forest ServicePublisher:
ISBN:
Category :
Languages : en
Pages : 7
Book Description
A Comparison of the Severity of Paper Birch (Betula Papyrifera Marsh.: Betulaceae) Stand Diebacks on Two Bedrock Formations Acadia National Park, Maine
Author: Kelly A. OmandPublisher:
ISBN:
Category : Trees
Languages : en
Pages : 196
Book Description
Genecology of 20 Paper Birch (Betula Papyrifera Marsh.) Provenances from British Columbia and Northern Idaho
Author: Nicole BallietPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Paper birch is an ecologically valuable species with a broad geographic distribution and increasingly valuable commercial attributes. Its diversity, versatility and enduring nature make it an ideal candidate for a selective breeding program. However, an understanding of the genecology of the species and an understanding of the potential impacts of climate change will be fundamental to its success. The objectives of the trail were to determine if the phenotypic variability observed in paper birch for certain traits was due to genetics, the growing environment or an interaction between the two. Traits examined were bud flush (phenological) and height growth (morphological). Whether or not nursery practices were a factor was also examined. Twenty provenances of paper birch were collected from five regions in British Columbia (BC) and northern Idaho. Seedlings were grown at three nurseries in BC and Idaho and planted in a randomized single tree interlocking block design in three common gardens in BC and Idaho. Geographic variation in the timing of bud burst in paper birch is under genetic and environmental control. It follows climatic clines based on latitude, longitude and elevation. The signal for the onset of spring bud flush is determined by an interaction between air and soil temperature and photoperiod. Long distance displacement of provenances from their site of origin can lead to detrimental abiotic and biotic effects such as frost or pest damage. Differences in stock handling among nurseries and nursery displacement effects also influenced the growth and survival of some provenances. This information will be useful when developing seed zones and seed transfer guidelines for paper birch in BC. It will also help mitigate the potential impacts of climate change and will be beneficial if a selective breeding program is established.
Effects of Overstory Paper Birch (Betula Papyrifera March) on Physiology, Growth, and Biomass Responses of Under-planted Conifer Seedlings
Author: Tracy Lynn ShermanPublisher:
ISBN:
Category : Paper birch
Languages : en
Pages : 0
Book Description
"This thesis tested whether two- and three-year old under-planted Abies /asiocarpa (Hook.) Nutt., Thuja plicata Donn ex. D. Don, Pseudotsuga menziesii var. glauca (Beissn.) Franco, and Picea glauca x P. engelmannii (Moench) Voss seedlings responded to changes in light quantity and spectral quality (measured by red to far-red ratios) under five densities of overstory paper birch (Betula papyrifera Marsh.) on a site in the interior cedar hemlock (ICHmk2) subzone, about 80 km east of Williams Lake, British Columbia. The five B. papyrifera densities were 0 (clearcut), 400, 800, 1200 stems ha-1 , and unthinned (> 10,000 stems ha-1 ). Generally, light quantity and red to far-red ratio increased three-fold in the clear-cut compared to the unthinned paper birch treatment. Conifer photosynthesis and percent foliar nitrogen was greater on the clear-cut compared to other paper birch densities. Total biomass was three-fold greater in the clear-cut grown seedlings of A. lasiocarpa, P. menziesii, and P. glauca x P. engelmannii, while for the most shade tolerant species, T plicata, the difference was two-fold. Similarly, relative growth rate increased for all species as birch density decreased. Results showed that A. lasiocarpa, P. menziesii, and P. glauca x P. engelmannii were more plastic in their photosynthetic and growth responses to increasing light compared to T plicata. Growth response to variation in light may be an important factor when deciding on appropriate densities of overstory paper birch for different under-planted conifer species."--Page iii.
The Effect of Elevated Atmospheric Carbon Dioxide on Paper Birch (Betula Papyrifera Marsh.) Seedlings
Author: Karen Lee JacksonPublisher:
ISBN:
Category : Paper birch
Languages : en
Pages : 74
Book Description
The Separate and Combined Effects of Ozone and Acidic Precipitation on Paper Birch Seedlings (Betula Papyrifera Marsh.) and Their Mycorrhizal Associations
Author: Kevin D. KeanePublisher:
ISBN:
Category : Birch
Languages : en
Pages : 158
Book Description
Genetic Variance Estimation with Seedlings of Paper Birch (Betula Papyrifera Marsh.).
Author: Jerome KleinPublisher:
ISBN:
Category : Plants
Languages : en
Pages : 102
Book Description
Phenological and Morphological Variation Among Some Paper Birch Seed Sources (Betula Papyrifera Marsh.).
Author: Jonathan Collieson TetherlyPublisher:
ISBN:
Category : Birch
Languages : en
Pages : 246
Book Description
Seasonal Fungal Biomass Dynamics in an Interior Alaskan Paper Birch (Betula Papyrifera Marsh) and Quaking Aspen (Populus Tremuloides Michx.) Stand and Effects of Long-term Fertilization
Author: Terry A. MoorePublisher:
ISBN:
Category : Soil fungi
Languages : en
Pages : 460
Book Description
