Results 11 to 20 of about 999,023 (188)

Fine-root carbon and nitrogen concentration of European beech (Fagus sylvatica L.) in Italy Prealps: possible implications of coppice conversion to high forest [PDF]

open access: yesFrontiers in Plant Science, 2013
Fine-root systems represent a very sensitive plant compartment to environmental changes. Gaining further knowledge about their dynamics would improve soil carbon input understanding.
Mattia eTerzaghi   +4 more
doaj   +3 more sources

Sampling date, leaf age and root size: implications for the study of plant C:N:p stoichiometry. [PDF]

open access: yesPLoS ONE, 2013
Plant carbon : nitrogen : phosphorus (C:N:P) ratios are powerful indicators of diverse ecological processes. During plant development and growth, plant C:N:P stoichiometry responds to environmental conditions and physiological constraints.
Haiyang Zhang   +8 more
doaj   +1 more source

Exchangeable and sampling-consistent distributions on rooted binary trees [PDF]

open access: yesJournal of Applied Probability, 2022
AbstractWe introduce a notion of finite sampling consistency for phylogenetic trees and show that the set of finitely sampling-consistent and exchangeable distributions on n-leaf phylogenetic trees is a polytope. We use this polytope to show that the set of all exchangeable and sampling-consistent distributions on four-leaf phylogenetic trees is ...
Hollering, Benjamin, Sullivant, Seth
openaire   +3 more sources

Root Handling Affects Carboxylates Exudation and Phosphate Uptake of White Lupin Roots

open access: yesFrontiers in Plant Science, 2020
The reliable quantification of root exudation and nutrient uptake is a very challenging task, especially when considering single root segments. Most methods used necessitate root handling e.g. root dissecting/cutting. However, there is a knowledge gap on
Raphael Tiziani   +5 more
doaj   +1 more source

Relieving efforts in palm‐tree tissue sampling for population genetics analyses

open access: yesEcology and Evolution, 2021
The young leaves are the main source of nucleic acids for population genetic studies in palm‐trees; however, the access to this tissue may be limited by specific features of each species. Using root tissues as an alternative source of nucleic acids could
Sebastian A. Espinoza‐Ulloa
doaj   +1 more source

Unraveling the secrets of plant roots: Simplified method for large scale root exudate sampling and analysis in Arabidopsis thaliana [version 2; peer review: 1 approved, 2 approved with reservations]

open access: yesOpen Research Europe, 2023
Background: Plants exude a plethora of compounds to communicate with their environment. Although much is known about above-ground plant communication, we are only beginning to fathom the complexities of below-ground chemical communication channels ...
Harihar Jaishree Subrahmaniam   +4 more
doaj   +1 more source

Validation and refinement of allometric equations for roots of northern hardwoods [PDF]

open access: yes, 2007
The allometric equations developed by Whittaker et al. (1974. Ecol. Monogr. 44: 233–252), at the Hubbard Brook Experimental Forest have been used to estimate biomass and productivity in northern hardwood forest systems for over three decades.
Hamburg, Steven P.   +2 more
core   +3 more sources

Unraveling the secrets of plant roots: Simplified method for large scale root exudate sampling and analysis in Arabidopsis thaliana [version 3; peer review: 1 approved, 2 approved with reservations]

open access: yesOpen Research Europe, 2023
Background Plants exude a plethora of compounds to communicate with their environment. Although much is known about above-ground plant communication, we are only beginning to fathom the complexities of below-ground chemical communication channels ...
Harihar Jaishree Subrahmaniam   +4 more
doaj   +1 more source

A starting guide to root ecology: strengthening ecological concepts and standardising root classification, sampling, processing and trait measurements [PDF]

open access: yesNew Phytologist, 2021
SummaryIn the context of a recent massive increase in research on plant root functions and their impact on the environment, root ecologists currently face many important challenges to keep on generating cutting‐edge, meaningful and integrated knowledge.
Grégoire T. Freschet   +39 more
openaire   +9 more sources

Optimal sampling strategies for multiscale stochastic processes [PDF]

open access: yes, 2006
In this paper, we determine which non-random sampling of fixed size gives the best linear predictor of the sum of a finite spatial population. We employ different multiscale superpopulation models and use the minimum mean-squared error as our optimality ...
Baraniuk, Richard G.   +5 more
core   +5 more sources

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