Results 61 to 70 of about 344,543 (254)

Generalized height-diameter models for five pine species at Southern Mexico

open access: yesForest Science and Technology, 2020
Generalized height-diameter at breast height (D) models are essential for the estimation of the timber stocks of a forest stand, as well as in the generation of base information to develop forest growth models, and as basic inputs in the development of ...
Wenceslao Santiago-García   +6 more
doaj   +1 more source

Drought influence over radial growth of Mexican conifers inhabiting mesic and xeric sites [PDF]

open access: yes, 2017
Drought is a major constraint of forest productivity and tree growth across diverse habitat types. In this study, we investigated the drought responses of four conifer species growing within two locations of differing elevation and climatic conditions in
Acosta Hernández, Andrea C.   +4 more
core   +2 more sources

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

Lignin engineering in forest trees [PDF]

open access: yes, 2019
Wood is a renewable resource that is mainly composed of lignin and cell wall polysaccharides. The polysaccharide fraction is valuable as it can be converted into pulp and paper, or into fermentable sugars.
Alvarenga Chanoca, Alexandra   +2 more
core   +1 more source

Effect of thermal rectification on colors of Eucalyptus Saligna and Pinus caribaea Woods

open access: yesMaderas: Ciencia y Tecnología, 2012
Eucalyptus saligna and Pinus caribaea var. hondurensis woods underwent a variety of thermal rectification treatments (from 120ºC to 180ºC) to evaluate the effect of heating on their colorimetric properties.
Ana Lúcia Piedade Sodero Martins Pincelli   +2 more
doaj  

Caracterización y control de la caída foliar en pinos de Puebla

open access: yesRevista Mexicana de Ciencias Forestales, 2019
A partir de 2014, diferentes especies de pinos de la Sierra Norte de Puebla han presentado defoliaciones importantes. En el presente estudio se caracterizaron los agentes causales y se evaluó la efectividad de productos químicos y biológicos para el ...
Sheyla Nallely Muñoz Belmont   +4 more
doaj   +1 more source

Phylogeny and taxonomy of the Ophiostoma piceae complex and the Dutch elm disease fungi [PDF]

open access: yes, 2001
The Ophiostoma piceae complex forms a monophyletic group of insect-dispersed pyrenomycetes with synnemata (Pesotum) and micronematous (Sporothrix) synanamorphs. Other species of Ophios-toma outside of the O.
Farrell, Roberta L.   +4 more
core   +2 more sources

Phylogenomics of palynophagous pine cone weevils (Coleoptera: Cimberididae) recovers the monophyly of Cimberidini and Doydirhynchini and reveals the paraphyly of Cimberis

open access: yesEuropean Journal of Entomology
The beetle family Cimberididae (pine cone weevils) consists of one extant subfamily, Cimberidinae, and two tribes, Cimberidini and Doydirhynchini, both limited in distribution to the Northern Hemisphere. Cimberidini comprise the genera Acromacer Kuschel,
Duane D. MCKENNA   +4 more
doaj   +1 more source

MAPA DOS PRODUTORES BRASILEIROS DE BIOCOMBUSTÍVEIS PELLETS

open access: yesRevista Brasileira de Engenharia de Biossistemas, 2018
Os pellets são biocombustíveis que podem ser produzidos a partir de resíduos lignocelulósicos como o bagaço da cana-de-açúcar, serragem ou maravalha de madeira.
D. P. Garcia   +6 more
doaj   +1 more source

Further Eastern Range Extension and Host Records for \u3ci\u3eLeptoglossus Occidentalis\u3c/i\u3e (Heteroptera: Coreidae): Well-Documented Dispersal of a Household Nuisance [PDF]

open access: yes, 2017
Leptoglossus occidentalis is reported for the first time from Connecticut, New York, Ontario, Pennsylvania, and Wyoming, representing an eastern range extension from Indiana and Michigan.
Gall, Wayne K
core   +2 more sources

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