Results 41 to 50 of about 116,302 (260)

Exportação de nutrientes em povoamentos de Pinus taeda L. baseada em volume estimado pelo sistema sispinus. [PDF]

open access: yes, 2019
Os plantios de Pinus ocorrem preferencialmente em regiões com menores preços de terras, localizados em áreas com solos de baixa fertilidade natural e conseqüentemente baixa produtividade. Essa condição, associada ao fato da não-fertilização dos plantios,
FERREIRA, C. A.   +3 more
core   +1 more source

Neutral effects of low‐intensity dog training on northern bobwhite vital rates

open access: yesWildlife Biology, EarlyView.
Indirect effects of hunting can lead to changes in population dynamics, which can be caused by trait‐mediated effects such as, but not limited to, changes in behavior, reproduction, and physiological responses. Our understanding of the effects of activities associated with hunting such as dog training may incur trait‐mediated effects, and ultimately ...
Kyle N. Magdziuk   +3 more
wiley   +1 more source

Fusiform Rust Trends in East Texas [PDF]

open access: yes, 1986
Four surveys of pine plantations in East Texas between 1969 and 1984 indicate that fusiform rust (Cronartium quercuum (Berk.) Miyabe ex Shirai f. sp. fusiforme) infection rates are increasing on slash pine (Pinus elliottii Engelm. var.
Hunt, Ellis V., Jr., Lenhart, J. David
core   +1 more source

Influence of wood’s anatomical and resin traits on the radial permeability of the hybrid pine (Pinus elliottii × Pinus caribaea) wood in Australia

open access: yes, 2020
Wood permeability has a major effect on industrial wood processing and utilization. Wood anatomy and resin influence the permeability of wood. Understanding and manipulating these influences is important to optimize the manufacture and use of forest ...
W. Leggate   +6 more
semanticscholar   +1 more source

Integrated X‐Ray, Gamma Radiation, and Micro‐CT Techniques for Quantitative Wood Characterization

open access: yesX-Ray Spectrometry, EarlyView.
ABSTRACT The present research integrates microcomputed tomography (micro‐CT), x‐ray fluorescence, and gamma‐ray transmission to quantitatively characterize wood species. A total of 22 samples from seven species were analyzed for density (ρ), linear attenuation coefficient (μ), Compton scattering, micro‐CT gray values (GV), porosity, mass attenuation ...
Roberta M. S. P. Borges   +7 more
wiley   +1 more source

Nutrição de pinus no Sul do Brasil: diagnóstico e prioridades de pesquisa. [PDF]

open access: yes, 2014
Restrições à produtividade; Exportação de nutrientes pela colheita florestal; Ciclagem e acúmulo de nutrientes na serapilheirabitstream/item/17070/1/doc60 ...
BELLOTE, A. F. J.   +4 more
core   +1 more source

Brown rotting fungus closely related to Pseudomerulius curtisii (Boletales) recorded for the first time in South America. [PDF]

open access: yes, 2012
In the region of Santa Maria, Southern Brazil, we have analyzed morphologically and molecularly some interesting brown-rotting mushroom specimens closely related to Pseudomerulius curtisii.
Antoniolli, Zaida Ines   +5 more
core   +1 more source

Burrow Persistence and Spatial Distribution of Federally and State‐Protected Gopher Tortoise (Gopherus polyphemus) Populations in Southwest Alabama

open access: yesAnimal Conservation, EarlyView.
The gopher tortoise (Gopherus polyphemus), a keystone species and ecosystem engineer, has declined by ~80% over the past century due to primarily habitat loss. In a 28‐year resurvey of federally protected Mobile County and state‐protected Baldwin County, we found tortoise populations persisted at ~59% and ~31% of sites, respectively, with significant ...
Robin B. Lloyd Jr.   +4 more
wiley   +1 more source

ESTUDO DA CONTAMINAÇÃO BIOLÓGICA POR Pinus spp. EM TRÊS DIFERENTES ÁREAS NA ESTAÇÃO ECOLÓGICA DE ITIRAPINA (SP, BRASIL)

open access: yesRevista do Instituto Florestal, 2006
Constituída por cerrado em suas diversas expressões fisionômicas, a Estação Ecológica de Itirapina sofre com a disseminação de espécies de Pinus provenientes da Estação Experimental de Itirapina, com a qual faz divisa.
Denise Zanchetta, Fábio Vicentin Diniz
doaj   +1 more source

Second-generation bioethanol from industrial wood waste of South American species [PDF]

open access: yes, 2017
There is a global interest in replacing fossil fuels with renewable sources of energy. The present review evaluates the significance of South-American wood industrial wastes for bioethanol production. Four countries have been chosen for this review, i.e.,
Area, Maria Cristina   +2 more
core   +2 more sources

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