Results 261 to 270 of about 2,359,096 (327)

Sistemas políticos y estructura del Estado [PDF]

, 1993
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core  

The frequency and importance of polyploidy in tropical rainforest tree radiations

New Phytologist, Volume 249, Issue 4, Page 2103-2114, February 2026.
Summary The presence of more than two copies of the genome in an organism, termed ‘polyploidy’, is a crucial force in plant evolution, generating genetic, phenotypic and ecological diversity. [Correction added on 22 January 2026, after first online publication: the preceding sentence has been corrected.] The Amazonian tree flora is the most species ...
Rowan J. Schley, Rosalía Piñeiro, James A. Nicholls, Michelle L. Gaynor, Gwilym P. Lewis, Flávia Fonseca Pezzini, Kyle G. Dexter, Catherine Kidner, R. Toby Pennington, Alex D. Twyford   +9 more
wiley   +1 more source

Between continuities and innovations: what CSP has in store for 2026. [PDF]

Cad Saude Publica
Alves LC, Carvalho MS, Lima LD.
europepmc   +1 more source

Nitrogen fertilization reduces the standing biomass, abundance, and size of Cenococcum sclerotia: a ubiquitous but rarely quantified ectomycorrhizal soil carbon pool

New Phytologist, Volume 249, Issue 4, Page 1709-1715, February 2026.
Summary Unlike most ectomycorrhizal (EM) fungi, Cenococcum geophilum is a prolific producer of sclerotia, which represent a large and persistent, yet rarely quantified pool of EM fungal biomass and carbon in soils. How biomass of these asexual propagules is impacted by global change factors, such as anthropogenic nitrogen (N) deposition, remains ...
Christopher W. Fernandez, Peter G. Kennedy   +1 more
wiley   +1 more source

On the Nature of Fluorescence Modification Induced by Deformation in Regenerated Silk Fibroin. [PDF]

ACS Appl Bio Mater
Santoro G, Toledano Ó, Horcajo Peribáñez I, Rebollar E, Ezquerra TA, Sena-Fernández J, Solano E, García-Gutiérrez MC.   +7 more
europepmc   +1 more source

Aphid parasitism alters induced plant responses allowing a hyperparasitoid to locate its hidden parasitoid host

New Phytologist, Volume 249, Issue 4, Page 2055-2070, February 2026.
Summary Plants typically host insect communities composed of multiple trophic levels that are intricately linked through interactions mediated by the shared food plant. Hyperparasitoids are top‐level carnivores in such systems, preying on parasitoid larvae developing inside herbivores. These hyperparasitoids can dramatically reduce the effectiveness of
Mitchel E. Bourne, Alessia Vitiello, Gabriel A. Charvalakis, Leandra Meerkerk, Berhane T. Weldegergis, Karen J. Kloth, Erik H. Poelman   +6 more
wiley   +1 more source

Psychometric evidence of the Ambivalent Sexism Inventory in undergraduate nursing students at a public institution. [PDF]

Rev Lat Am Enfermagem
Vasconcelos S, Penna LHG, Formiga NS, Damasceno RO, Ribeiro LV, Leira BCA.   +5 more
europepmc   +1 more source

Community‐driven variations in snow algae color modulate snow albedo reduction

New Phytologist, Volume 249, Issue 4, Page 1739-1752, February 2026.
Summary Snow algae blooms visibly alter snow color and surface energy balance, yet the biological basis of this variability remains unclear. We investigated how pigment composition and community structure shape the optical properties of snow algae blooms of distinct colors – red, orange, and green – co‐occurring within the same snowfield in Glacier ...
Pablo Almela, James J. Elser, Anthony Zmuda, Thomas Niehaus, Trinity L. Hamilton   +4 more
wiley   +1 more source

[Pulmonary Hypertension Centers]. [PDF]

Rev Med Inst Mex Seguro Soc
Santos-Martínez LE.
europepmc   +1 more source

[DASS-9: Toward a more efficient measure of emotional symptoms]. [PDF]

Rev Salud Publica (Bogota)
Orellana CI, Orellana LM.
europepmc   +1 more source