Results 11 to 20 of about 35,511 (296)

Classifying Large Wildfires in the United States by Land Cover

open access: yesRemote Sensing, 2020
Fire is an ecological process that also has socio-economic effects. To learn more about fire occurrence, I examined relationships between land classes and about 12,000 spatially delineated large wildfires (defined here as uncontrolled fires ≥200 ha ...
Brice B. Hanberry
doaj   +1 more source

Functional Relationships Between Branch and Stem Wood Density for Temperate Tree Species in North America

open access: yesFrontiers in Forests and Global Change, 2020
Wood density is strongly related to key aspects of tree physiological performance. While many studies have examined wood density in different parts of trees, for a variety of reasons, there are very few studies that have compared within-tree density ...
David W. MacFarlane
doaj   +1 more source

UHPLC-Q-Orbitrap-MS-Based Metabolomics Reveals Chemical Variations of Two Types of Rhizomes of Polygonatum sibiricum

open access: yesMolecules, 2022
The rhizomes of Polygonatum sibiricum are commonly consumed as food and also used as medicine. However, the metabolic profile of P. sibiricum has not been fully revealed yet. Recently, we developed a novel evergreen species of P. sibiricum.
Gelian Luo   +5 more
doaj   +1 more source

Cellulose in Foliage and Changes during Seasonal Leaf Development of Broadleaf and Conifer Species

open access: yesPlants, 2022
Stable isotope approaches are widely applied in plant science and many improvements made in the field focus on the analysis of specific components of plant tissues.
Zoltan Kern   +4 more
doaj   +1 more source

Functional Phenology of a Texas Post Oak Savanna from a CHRIS PROBA Time Series

open access: yesRemote Sensing, 2019
Remnant midwestern oak savannas in the USA have been altered by fire suppression and the encroachment of woody evergreen trees and shrubs. The Gus Engeling Wildlife Management Area (GEWMA) near Palestine, Texas represents a relatively intact southern ...
Michael J. Hill   +3 more
doaj   +1 more source

A sticky thicket of glue cells: A comparative morphometric analysis of colloblasts in 20 species of comb jelly (phylum Ctenophora)

open access: yesCiencias Marinas, 2020
Ctenophores in the class Tentaculata are distinct from Cnidarians in that they use sticky, not stinging, tentacles to capture and subdue their prey.
Nicholas D Leonardi   +2 more
doaj   +1 more source

Evergreen Production System for Southern Highbush Blueberries in Florida

open access: yesEDIS, 2020
In central and south-central Florida, many southern highbush blueberries (SHB) are grown in an evergreen system, in which the plants do not go dormant, and are managed to retain their leaves from the previous year through harvest the following spring to
Doug Phillips   +2 more
doaj   +5 more sources

Support for a Photoprotective Function of Winter Leaf Reddening in Nitrogen-Deficient Individuals of Lonicera japonica

open access: yesMolecules, 2014
Plants growing in high-light environments during winter often exhibit leaf reddening due to synthesis of anthocyanin pigments, which are thought to alleviate photooxidative stress associated with low-temperature photoinhibition through light attenuation ...
Kaylyn L. Carpenter   +3 more
doaj   +1 more source

The association of serum choline concentrations with the risk of cancers: a community-based nested case–control study

open access: yesScientific Reports, 2023
Few studies have been designed to investigate the effect of serum choline on the risk of incident cancer. This study aims to explore the association between serum choline and the risk of new-onset cancer.
Wenqiang Li   +7 more
doaj   +1 more source

Vegetation of Doi Tung, Chiang Rai Province, Northern [PDF]

open access: yesMaejo International Journal of Science and Technology, 2007
The climate of Doi Tung, Chiang Rai Province, is monsoonal with three distinctseasons, viz. cool-dry, hot-dry, and rainy. The elevation ranges from c. 350-1525m and mostof the bedrock is limestone and granite. Vegetation below c.
J. F. Maxwell
doaj  

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