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Showing 1 to 12 of 12 for “"Red Spruce (Picea rubens)"”.
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Analysis of red spruce (Picea rubens) regeneration in Pocahontas, Randolph, and Tucker counties, West Virginia
Three red spruce communities in the Central Appalachians of West Virginia were accessed temporally over a period of 10 to 11 years and by forest zones (i.e. hardwood, ecotone, red spruce zones). These communities experienced an increasing density of red spruce over time across all forest zones. Red …
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Restoration of Red Spruce (Picea rubens) and Virginia Northern Flying Squirrel (Glaucomys sabrinus fuscus) Habitat in West Virginia
… a rare subspecies that relies on high-elevation red spruce (Picea rubens) forests in the central Appalachian Mountains of West Virginia and Virginia. Existing habitat suitability models emphasize the composition of the red spruce canopy but lack insights into the structural characteristics of the …
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Competitive status of red spruce (Picea rubens) and Fraser fir (Abies fraseri) at ecotonal transitions in southern Appalachian sky islands
Southern Appalachian spruce-fir sky islands are globally threatened, boreal relict forests where red spruce (Picea rubens) and Fraser fir (Abies fraseri) are dominant. Fraser fir dominates at the highest elevations with spruce-fir and spruce-dominated stands at middle elevations and hardwoods …
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Purification and characterization of glutathione reductase isozymes specific for the state of cold hardiness of red spruce (Picea rubens sarg.)
Isozymes of glutathione reductase (GR) have been purified from red spruce. A major isozyme is present throughout the year, while one isozyme is present only during summer in non-hardened needles. A third isozyme is present only during winter in hardened needles. The isozymes present in non-hardened …
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Modeling Stem Taper of Southern Appalachian Red Spruce
Red spruce (Picea rubens Sarg.) is a commercially and ecologically important conifer species that primarily exists at northern latitudes of eastern North America. During the last glaciation, its range extended down the Appalachian Mountain chain into North Carolina and Tennessee. Since the planet …
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Red spruce physiology and growth in response to elevated CO₂, water stress and nutrient limitations
Spruce-fir ecosystems of the eastern United States interest scientists because of reported changes in population growth. Whether red spruce (Picea rubens Sarg.) populations are declining because of disease, pollution or environmental stress or experiencing natural changes in stand development is …
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Factors associated with Atlantic white -cedar seedling recruitment on microtopographic and landscape scales, Brown Mill Pond, Rye, New Hampshire
… identified cedar communities were measured for differences in water table level and soil moisture in order to determine associations between stand dynamics and hydrology.</p><p>A field survey showed that cedar seedlings were (1) absent from hummocks with tussock sedge substrate and …
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Biotic and Abiotic Factors of Picea rubens (Red Spruce) Seedling Regeneration in Disturbed Heathland Barrens of the Central Appalachians
… 19th and early 20th centuries, extensive logging reduced the forests of red spruce (Picea rubens) by nearly 99% through portions of West Virginia. In the wake of this disturbance, red spruce has begun regenerating on the ridge and mountaintop areas of Canaan Valley, West Virginia, where heath and …
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Laboratory and field ecophysiological studies on the impact of air pollution on red spruce and Fraser fir
… the impact of air pollution on high-elevation red spruce-Fraser fir forests in the Southern Appalachians. In the first study, red spruce (Picea rubens Sarg.) and Fraser fir (Abies fraseri (Pursh.) Poir.) seedlings were submitted to long-term (2.5 yrs), multiple growing cycle (4 and 5, …
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Determining Habitat Associations of Virginia and Carolina Northern Flying Squirrels in the Appalachian Mountains from Bioacoustic and Telemetry Surveys
… Both subspecies were listed under the Endangered Species Act in 1985 as endangered, and accordingly, the Virginia northern flying squirrel and the Carolina northern flying squirrel are considered high conservation priorities by state and federal agencies. Although the listing prompted work to …
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The Physiological Ecology of Fraser FIr in Southern Appalachian Cloud Forests
… and eastern Tennessee. Usually associated with red spruce, Picea rubens Sarg., these forests are receive greater than 1500 mm yr-1 precipitation, with as much as 50% of their annual precipitation due to cloud water deposition. Furthermore, these forests are immersed in clouds 30-40% of the time …
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Stand structure, growth, and mortality in southern Appalachian spruce-fir
… m) permanent plots at three southern Appalachian spruce-fir sites (Mt. Rogers National Recreation Area (NRA) of Virginia, the Black Mountains of North Carolina, and the Great Smoky Mountains of Tennessee and North Carolina). Baseline conditions were documented to accommodate future efforts to …