Results 21 to 30 of about 1,412 (171)

A phytosociological survey of the boreal forest (Vaccinio-Piceetea) in North America [PDF]

, 1998
A survey of syntaxa of vegetation of North American boreal forests (class Vaccinio-Piceetea) is presented. This phytosociological survey, carried out combining the Braun-Blanquet method with numerical syntaxonomical analyses (cluster and correspondence
Aguirre, J.L., Cruz Rot, Marcelino de la, Peinado, M.   +2 more
core   +2 more sources

Reproductive Compatibility Within and Among Spruce Budworm (Lepidoptera: Tortricidae) Populations [PDF]

, 2017
Spruce bud worm moths collected as larvae from two species of host trees in four populations were mated in single pairs in two years. In 1980 but not 1981, more of the intra-population matings than the inter-population matings were fertile.
Bauer, Leah S, Lorimer, Nancy
core   +3 more sources

Propagation of Abies fraseri by Semidormant Hardwood Stem Cuttings

HortScience, 1985
Abstract Dormant hardwood stem cuttings of Fraser Fir [Abies fraseri (Pursh) Poir.] were severed from upper and lower tree crowns and artificially chilled at 4°C for 0, 4, or 8 weeks to achieve a partial break in rest. Following chilling, the resulting semi-dormant cuttings were treated with 0, 1500, 3000, or 4500 ppm IBA, and rooted for 135 days using
Farrell C. Wise, Frank A. Blazich, L. Eric Hinesley   +2 more
openaire   +1 more source

First findings of an invasive tandem bark beetle – phytopathogenic fungus in the Middle Ural megalopolis [PDF]

Сибирский лесной журнал
The four-eyed fir bark beetle (Polygraphus proximus Blandford) and the fungus (Grosmannia aoshimae (Ohtaka, Masuya & Yamaoka) Masuya & Yamaoka) form an extremely aggressive invasive tandem affecting Siberian fir (Abies sibirica Ledeb.) throughout almost ...
Yu. N. Baranchikov, V. I. Ponomarev, N. V. Pashenova, A. A. Efremenko, D. Yu. Golikov, G. I. Klobukov, B. V. Krasutskiy, N. I. Kirichenko   +7 more
doaj   +1 more source

Isolation and characterization of microsatellite markers in Fraser fir (Abies fraseri) [PDF]

Molecular Ecology Notes, 2005
AbstractWe describe the isolation and characterization of 14 microsatellite loci from Fraser fir (Abies fraseri). These markers originated from cloned inserts enriched for DNA sequences containing tandem di‐ and tri‐nucleotide repeats. In total, 36 clones were selected, sequenced and evaluated.
Josserand, S.A., Potter, K.M., Johnson, G., Bowen, J.A., Frampton, J., Nelson, C.D.   +5 more
openaire   +1 more source

Refugial forests of the southern Appalachians: photosynthesis and survival in current-year Abies fraseri seedlings [PDF]

Tree Physiology, 2005
Fraser fir (Abies fraseri (Pursh) Poiret) is an endemic, high-elevation conifer confined to six relict mountaintop communities in the southern Appalachian Mountains, USA. High adult mortality has occurred over the past 50 years, possibly the result of an introduced insect (Adelges piceae Ratzeburg), air pollution, or both.
Daniel M, Johnson, William K, Smith
openaire   +2 more sources

Thyronectria balsamea on Abies fraseri in Pennsylvania and North Carolina

Plant Disease, 1997
In August 1996, several 4- to 6-m-tall Abies fraseri (Pursh) Poir. in Adams County, PA, were found bearing numerous dead branches and/or dead tops. The trees had been severely stressed by being ball-and-burlapped and replanted in 1993. Distinct cankers occurred between the living and dead portions of stems and branches.
N G, Wenner, W, Merrill, J T, Moody
openaire   +2 more sources

Grafting Fraser Fir (Abies fraseri): Effect of Scion Origin (Crown Position and Branch Order) [PDF]

HortScience, 2011
Success and subsequent growth of fraser fir [Abies fraseri (Pursh) Poir.] cleft grafts were studied in relation to origin and type of scion material in the tree crown. First- and second-order shoots (current-year) were collected from five zones in the crown, ranging from top to bottom, and grafted to 5-year-old fraser fir transplants in April.
Haley Hibbert-Frey, John Frampton, Frank A. Blazich, Doug Hundley, L. Eric Hinesley   +4 more
openaire   +1 more source

Is There Synchronicity in Nitrogen Input and Output Fluxes at the Noland Divide Watershed, a Small N-Saturated Forested Catchment in the Great Smoky Mountains National Park?

The Scientific World Journal, 2001
High-elevation red spruce [Picea rubens Sarg.]-Fraser fir [Abies fraseri (Pursh.) Poir] forests in the Southern Appalachians currently receive large nitrogen (N) inputs via atmospheric deposition (30 kg N ha 1 year 1) but have limited N retention ...
H. Van Miegroet, I.F. Creed, N.S. Nicholas, D.G. Tarboton, K.L. Webster, J. Shubzda, B. Robinson, J. Smoot, D. W. Johnson, S. E. Lindberg, G. Lovett, S. Nodvin, S. Moore   +12 more
doaj   +1 more source

Sesquiterpene Induction by the Balsam Woolly Adelgid (Adelges piceae) in Putatively Resistant Fraser Fir (Abies fraseri)

Forests, 2022
Fraser fir, Abies fraseri (Pursh) Poir., is a tree endemic to the Southern Appalachians and is found only in a few isolated populations at high elevations. Fraser firs are also cultivated on a commercial scale as Christmas trees. The species is imperiled by an introduced insect, the balsam woolly adelgid, Adelges piceae Ratzeburg (BWA).
Austin Thomas, David C. Tilotta, John Frampton, Robert M. Jetton   +3 more
openaire   +1 more source