Results 51 to 60 of about 24,376 (249)

Decoupling climate and human impacts on the nitrogen cycle during the Irish Bronze Age

open access: yesJournal of Quaternary Science, EarlyView.
ABSTRACT Disentangling climate variability and human activity in past nitrogen cycling is key to understanding ecosystems. Previous studies in Ireland observed a widespread, permanent shift in terrestrial nitrogen cycling during Later Prehistory, potentially linked to intensifying land‐use.
Sarah Ferrandin   +2 more
wiley   +1 more source

Type designations for three names applicable to Mexican species of Dysphania (Chenopodiaceae s. str. / Amaranthaceae s. l.), and a new combination

open access: yesUkrainian Botanical Journal
The names Ambrina dissecta, Chenopodium incisum, and Chenopodium stellatum are taxonomically assessed and their lectotypes are designated, the specimens preserved at P and GH.
Sandoval-Ortega M.H.   +1 more
doaj   +1 more source

Atriplex mollis desf. Aerial parts: extraction procedures, secondary metabolites and color analysis [PDF]

open access: yes, 2018
A method using high-performance liquid chromatography coupled with a photodiode array detector was proposed for the rapid characterization of different phenolic constituents from the extracts of Atriplex mollis aerial parts.
Benayache, Fadila   +11 more
core   +1 more source

Rolling and Burning to Transform Woody Species Thickets and Restore Abandoned Farmland

open access: yesEcological Management &Restoration, Volume 27, Issue 2, May 2026.
ABSTRACT Woody plant encroachment is a key issue that needs to be addressed when restoring abandoned farmland previously used for livestock grazing. In a conservation context, woody shrubs can be problematic if they prevent the establishment of a desired vegetation composition and structure by outcompeting other species for light, nutrients and water ...
H. Neilly, P. Cale
wiley   +1 more source

Dynamics of Vegetation and Soil in Long‐Term Artificial Sand Control Projects in the Ulan Buh Desert

open access: yesEcology and Evolution, Volume 16, Issue 3, March 2026.
This study investigates the long‐term synergistic evolution of vegetation and soil in artificial sand‐control projects (using straw checkerboard barriers) in China's Ulan Buh Desert. By analyzing areas with different restoration times (0–15 years), it identifies ~10 years as a critical inflection point where plant communities mature into stable, near ...
Benmo Li   +4 more
wiley   +1 more source

Replicability of data collected for empirical estimation of relative pollen productivity [PDF]

open access: yes, 2016
The effects of repeated survey and fieldwork timing on data derived from a recently proposed standard field methodology for empirical estimation of relative pollen productivity (RPP) have been tested.
Bunting, M. Jane   +2 more
core   +2 more sources

Climate Change, Air Quality, and Pollen Allergies—State of the Art and Recommendations for Research and Public Health

open access: yesAllergy, Volume 81, Issue 3, Page 663-683, March 2026.
ABSTRACT Allergies are one of the major health challenges of our time, associated with a high individual burden of disease and high costs for the healthcare system. Given their prevalence, allergies are also highly relevant from a public health perspective. The development of allergic diseases is multifactorial. In addition to individual factors (e.g.,
Jobst Augustin   +13 more
wiley   +1 more source

EVALUACIÓN DEL CICLO FENOLÓGICO Y CARACTERIZACIÓN MORFOLÓGICA DE GENOTIPOS DE QUINUA (Chenopodium quinua Willd.)

open access: yesTropical and Subtropical Agroecosystems
Antecedentes: Los estudios de caracterización morfológica y determinación del ciclo fenológico de quinua en Colombia son escasos, los cuales son necesarios para la identificación de nuevos materiales de siembra.
Miguel Adolfo Pizo Ossa   +5 more
doaj   +1 more source

Chenopodiaceae endémicas del Perú

open access: yesRevista Peruana de Biología, 2013
La familia Chenopodiaceae es reconocida en el Perú con cuatro géneros y 20 especies (Brako & Zarucchi, 1993; Ulloa Ulloa et al., 2004), todas hierbas y arbustos. En este trabajo reconocemos un endemismo en el género Atriplex.
Blanca León, Christhian Monsalve
doaj   +1 more source

Effect of salinity on seed germination, growth and ion content in dimorphic seeds of Salicornia europaea L. (Chenopodiaceae)

open access: yesPlant Diversity, 2016
The halophyte Salicornia europaea L. is a widely distributed salt-tolerant plant species that produces numerous dimorphic seeds. We studied germination and recovery in dimorphic seeds of Central Asian S. europaea under various salinity conditions.
N. Orlovsky   +3 more
semanticscholar   +1 more source

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