Results 91 to 100 of about 16,518 (216)
Human Brain Mapping, Volume 47, Issue 5, 1 April 2026.ABSTRACT Quantitative imaging biomarkers (QIBs) are objective measures derived from quantitative imaging that can differentiate pathological changes from healthy biological processes. Diffusion MRI parameters derived from Diffusion Tensor Imaging (DTI) and Neurite Orientation Dispersion and Density Imaging (NODDI) could serve as potential QIBs for ...
Agnieszka Sierhej +7 more
wiley +1 more source
Taxonomy and diversity of Marcgraviaceae, north of the São Francisco river, northeast Brazil
Nordic Journal of Botany, Volume 2026, Issue 4, April 2026.This study provides a comprehensive assessment of Marcgraviaceae species diversity north of the São Francisco river in northeastern Brazil, analyzing species richness and distribution patterns across 384 000 km² of phytogeographic domains. Through field collections, herbarium studies (both physical and digital), and detailed morphological analyses, we ...
Thales Carvalho +4 more
wiley +1 more source
, 2017 Associate Professor Joe Wilkins and his family spent the summer and fall of 2015 living in an off-the-grid cabin in the Klamath Mountains above the Rogue River of southwest Oregon.
Wilkins, Joe
core +1 more source
, 2014 Hummingbirds are very distinctive in their form and behavior, the evolution of which is tightly connected to the evolution of their primary source of energy — floral nectar.
Biewener, Andrew Austin +4 more
core +1 more source
Is bee‐avoidance by bird‐pollinated flowers driven by nectar robbing in Erica?
Functional Ecology, Volume 40, Issue 4, Page 1046-1060, April 2026.Read the free Plain Language Summary for this article on the Journal blog. Abstract Nectar robbing (consuming nectar from a perforated flower without pollinating) generally negatively affects plant fecundity, and plants exhibit multiple mechanisms in defence.
Anina Coetzee +4 more
wiley +1 more source
Stable isotope data indicate origins of mislabelled historical bird specimens
Ibis, Volume 168, Issue 2, Page 779-784, April 2026.Natural history specimens provide valuable insights across diverse research fields, but those needing more accurate metadata have limited scientific value. We applied stable isotope analysis to investigate the origin of 19th century Atlantic Forest bird specimens attributed to the northeastern Brazilian state of Pernambuco, which are the only records ...
Rafael Dantas Lima +4 more
wiley +1 more source
Ibis, Volume 168, Issue 2, Page 571-587, April 2026.Mist‐net sampling comprises a key methodological component of assemblage‐wide avifaunal studies, particularly in the understorey of closed‐canopy tropical forests. To investigate mist‐net bird captures and species assemblage structure, we compiled data from 312 sites across the Pan‐Amazon.
Pilar L. Maia‐Braga +14 more
wiley +1 more source
Effect of artificial feeders on pollen loads of the hummingbirds of Cerro de La Muerte, Costa Rica
Revista de Biología Tropical, 2012 Although sugar-water feeders are commonly used by enthusiasts to attract hummingbirds, little is known about how they affect hummingbird behavior and flower use.
Gerardo Avalos +2 more
doaj
Microclimate drives demographic compensation in a narrow endemic tropical species
New Phytologist, Volume 250, Issue 1, Page 166-180, April 2026.Summary Demographic compensation occurs when reductions in some vital rates are offset by increases in others, allowing populations to maintain similar performance across varying environments. This mechanism may help explain species' ecological distributions and range limits, yet its role at microenvironmental scales remains poorly understood.
Talita Zupo +10 more
wiley +1 more source
Zoologia (Curitiba), 2018 Using track analysis and cladistic biogeography, we identified areas of endemism of hummingbirds in the Andean and Neotropical regions. Our results point out that the current areas of endemism of hummingbirds occur in the Andes, Guiana Shield, the Lesser
Daiane Ouvernay +2 more
doaj +1 more source