Results 31 to 40 of about 111,585 (317)

Dauciform roots affect the position of the neighboring plants on the economic spectrum in degraded alpine meadows

open access: yesFrontiers in Plant Science, 2023
Background and aimsSpecial root structures that can dissolve insoluble phosphorus locked in soil are supposed to contribute not only to the growing status of themselves but also to the neighbouring plants. However, whether dauciform roots have any effect
Rong Fan   +4 more
doaj   +1 more source

A phytosociological survey of the boreal forest (Vaccinio-Piceetea) in North America [PDF]

open access: yes, 1998
A survey of syntaxa of vegetation of North American boreal forests (class Vaccinio-Piceetea) is presented. This phytosociological survey, carried out combining the Braun-Blanquet method with numerical syntaxonomical analyses (cluster and correspondence
Aguirre, J.L.   +2 more
core   +2 more sources

Characterisation of Holocene plant macrofossils from North Spanish ombrotrophic mires: vascular plants [PDF]

open access: yesMires and Peat, 2016
Methods and criteria that were used to identify plant macrofossils from four ombrotrophic mires in northern Spain are presented. Twelve monocotyledon and ten dicotyledon species were recorded.
M. Souto   +4 more
doaj   +1 more source

Tres nuevos registros del genero Carex (Cyperaceae) para el Perú y adiciones a la flora andina del departamento de Huánuco

open access: yesRevista Peruana de Biología, 2008
Tres nuevos registros para el Perú (Carex humahuacaensis G.A. Wheeler, Carex peucophila T. Holm y Carex pygmaea Boeck.) y 75 nuevos registros para la flora del departamento de Huánuco son dados a conocer.
Flor De María Salvador   +2 more
doaj   +1 more source

The "Carex" fen vegetation of northern New South Wales [PDF]

open access: yes, 2009
The floristic composition and extent of Carex-dominated fens in the New South Wales New England Tablelands Bioregion and Barrington Tops area (lat 28° 41’ S–31° 55’ S; long 151° 23’ E–152° 05’ E) together with outliers from the central west ...
Bell, Dorothy, Hunter, John T.
core  

Temperature and the evolution of flower color: A review

open access: yesAmerican Journal of Botany, EarlyView.
Abstract Flower colors brighten our natural world. How and why have they evolved? How might ongoing global warming alter their evolutionary trajectories? In this review, I examine the influence of ambient temperature on the evolution of flower color.
Elizabeth P. Lacey
wiley   +1 more source

On subset least squares estimation and prediction in vector autoregressive models with exogenous variables

open access: yesCanadian Journal of Statistics, EarlyView.
Abstract We establish the consistency and the asymptotic distribution of the least squares estimators of the coefficients of a subset vector autoregressive process with exogenous variables (VARX). Using a martingale central limit theorem, we derive the asymptotic normal distribution of the estimators. Diagnostic checking is discussed using kernel‐based
Pierre Duchesne   +2 more
wiley   +1 more source

Canadians’ knowledge of cancer risk factors and belief in cancer myths

open access: yesBMC Public Health
Background Many untrue statements about cancer prevention and risks are circulating. The objective of this study was to assess Canadians’ awareness of known cancer risk factors and cancer myths (untruths or statements that are not completely true), and ...
E Rydz   +6 more
doaj   +1 more source

Typification of Carex helodes Link, Carex laevigata Sm. and Carex patula Link ex Schkuhr (Cyperaceae) [PDF]

open access: yes, 2009
The name of Carex helodes Link is neotypified. This species has been erroneously considered as a synonym of Carex laevigata Sm. and Carex patula Schkuhr, which the names are also lectotypified.
Escudero Lirio, Marcial   +2 more
core  

Home - About - Disclaimer - Privacy