Results 31 to 40 of about 1,412 (171)

Evaluation of Three Trap Types and Five Lures for Monitoring \u3ci\u3eHylurgus Ligniperda\u3c/i\u3e (Coleoptera: Scolytidae) and Other Local Scolytids in New York [PDF]

open access: yes, 2018
Hylurgus ligniperda (Coleoptera: Scolytidae) is a pine (Pinus spp.) pest native to Eurasia and northern Africa. In December 2000, an established population of H. ligniperda was discovered in Monroe County, New York.
Haack, Robert A   +2 more
core   +2 more sources

Viabilidad y germinación de las semillas de "Abies pinsapo Boiss" [PDF]

open access: yes, 1992
Se estudió la viabilidad y germinación de las semillas de Abies pinsapo Boiss. sobre una muestra de 2000 piñones procedentes de dos árboles de la Serranía de Grazalema.
Arista, Monserrat   +2 more
core   +5 more sources

Aging and longevity in decades‐old genebanked seeds from U.S. endangered plant species: Assessments using survival and RNA integrity assays

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Premise Seed longevity is critical for successful genebanking, but it is hard to detect or predict. We examined survival of genebanked seeds from species native to the United States to estimate longevity. We tested whether RNA integrity (RIN) can be used to detect aging and predict mortality. Methods Dry seeds from >100 species were stored for
Christina Walters   +7 more
wiley   +1 more source

Recovery trends and predictions of Fraser fir (Abies fraseri) dynamics in the Southern Appalachian Mountains [PDF]

open access: yesCanadian Journal of Forest Research, 2017
The endemic Fraser fir (Abies fraseri (Pursh) Poir.) is found in only seven montane regions in the southern Appalachians above ca. 1500 m elevation. Due to widespread insect-caused mortality from the invasive balsam woolly adelgid (Adelges piceae Ratzeburg), as well as possible impacts from climate change and atmospheric pollution, the future of ...
Kaylor, S Douglas   +2 more
openaire   +1 more source

International Biological Flora: Tsuga canadensis*

open access: yesJournal of Ecology, Volume 113, Issue 10, Page 3037-3080, October 2025.
Eastern Hemlock is a long‐lived forest tree of eastern North America known for its deep shade and home given to many organisms. Despite surviving large‐scale clearing for agriculture when Europeans arrived, it returned to dominate when the land was abandoned in the mid 1800s.
Peter A. Thomas, David A. Orwig
wiley   +1 more source

Induksi Embrio Somatik Shorea Pinanga Scheff. Pada Kondisi Fisik Media Berbeda [PDF]

open access: yes, 2013
Shorea pinanga (Scheff.) is a member of Dipterocarpaceae which has an important role both as a forest timber and also non forest timber product (tengkawang).
Yelnititis, Y. (Yelnititis)
core   +1 more source

Outbreak of Phytophthora abietivora in a Québec Forest Nursery: Emergence of a New Phytophthora Tree Pathogen?

open access: yesForest Pathology, Volume 55, Issue 5, October 2025.
ABSTRACT Tree nurseries play a key role in the Canadian economy and reforestation efforts, producing over 600 million seedlings annually. Despite rigorous management practices, nurseries are not exempt from pathogen outbreaks, which can be devastating on many levels.
Guillaume Charron   +3 more
wiley   +1 more source

Certain floristic affinities of the trees and shrubs of the Great Smoky mountains and vicinity [PDF]

open access: yes, 1930
It is widely admitted that the forests of eastern United States reach their culmination in the southern Appalachians, particularly in the Unaka range of North Carolina and Tennessee.
Cain, Stanley A.
core   +1 more source

Determinants of the Southern Range Limit of an Infamous North American Forest Defoliator

open access: yesJournal of Biogeography, Volume 52, Issue 7, July 2025.
ABSTRACT Aim Predicting climate driven species range shifts requires knowledge of mechanisms limiting species fitness under various climatic conditions. The traditional approach of modelling ranges of herbivorous insects by fitting environmental niche models to occurrence records is generally incapable of differentiating direct effects of climate on ...
Andrew M. Liebhold   +2 more
wiley   +1 more source

Gibberellic acid inhibitors control height growth and cone production in Abies fraseri

open access: yesScandinavian Journal of Forest Research, 2016
Precocious cone production in Fraser fir (Abies fraseri) results in substantial economic losses for Christmas tree growers in the United States. Cone removal often represents the second highest labor expense, after shearing. Gibberellins (GAs) regulate both reproductive development and shoot elongation, and are used to enhance cone production in ...
Crain, Brent A., Cregg, Bert M.
openaire   +1 more source

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