Zobrazeno 1 - 10
of 132
pro vyhledávání: '"Caroline M. Preston"'
Publikováno v:
Frontiers in Earth Science, Vol 5 (2017)
Wildfires are a major driver of carbon stocks and ecosystem development in Canadian boreal forests, but there is little information on amounts and properties of the charcoal produced. Using data and samples available from a previous study, we determi
Externí odkaz:
https://doaj.org/article/98be758bf33146bdaa6879e7386dd988
Publikováno v:
Frontiers in Plant Science, Vol 8 (2017)
Environmental stresses not only influence production of plant metabolites but could also modify their resorption during leaf senescence. The production-resorption dynamics of polyphenolic tannins, a class of defense compound whose ecological role ext
Externí odkaz:
https://doaj.org/article/1f11e419700c403c8527cd111a45d970
Publikováno v:
PLoS ONE, Vol 13, Iss 6, p e0198860 (2018)
Kalmia angustifolia is a boreal ericaceous shrub that can rapidly spread on black spruce forest cutovers in eastern Canada, where CPRS (i.e. Cutting with Protection of Regeneration and Soils") is practiced. The proliferation of Kalmia often coincides
Externí odkaz:
https://doaj.org/article/218c57c1c1b54e0f958130d3c8178121
Autor:
Caroline M. Preston
The development of high-field superconducting magnets and of Fourier transform techniques has made possible the application of solution Nuclear magnetic resonance (NMR) to humic materials from soils, composts, aquatic environments, sediments and coal
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::9b021c40bed34b93d2f52d3c47a5d348
https://doi.org/10.1201/9781003069805-2
https://doi.org/10.1201/9781003069805-2
Autor:
Brian D. Titus, Caroline M. Preston, Carolyn Smyth, Cindy E. Prescott, Tim R. Moore, John A. Trofymow
Publikováno v:
Plant and Soil. 409:459-477
We measured changes in mass and in carbon (C), nitrogen (N) and phosphorus (P) concentrations and content of surface-placed and buried wood blocks decomposing over 12 years at 21 sites across Canada to evaluate the influence of the environment on C,
Autor:
John A. Trofymow, Caroline M. Preston
Publikováno v:
Biogeochemistry. 126:197-209
Proximate analysis (PA) is widely used to assess foliar, litter, and wood quality. The acid-unhydrolyzable residue (AUR) of PA, originally known as Klason lignin from wood analysis, is often assumed to be entirely lignin-derived, but the AUR of much
Publikováno v:
Frontiers in Earth Science, Vol 5 (2017)
Wildfires are a major driver of carbon stocks and ecosystem development in Canadian boreal forests, but there is little information on amounts and properties of the charcoal produced. Using data and samples available from a previous study, we determi
Publikováno v:
Biogeochemistry. 124:113-129
Factors regulating the persistence of lignin in terrestrial ecosystems are highly debated, and recently lignin has been proposed to have a low residence time in soils. The catalytic efficiency and activation energy of the oxidoreductase enzymes regul
Autor:
Caroline M. Preston
Publikováno v:
Magnetic Resonance in Chemistry. 53:635-647
Publikováno v:
Global Change Biology
Wildfires release substantial quantities of carbon (C) into the atmosphere but they also convert part of the burnt biomass into pyrogenic organic matter (PyOM). This is richer in C and, overall, more resistant to environmental degradation than the or