Results 11 to 20 of about 37,422 (138)
Applications in Plant Sciences, Volume 11, Issue 5, September-October 2023., 2023 Abstract Premise Imaging technologies that capture three‐dimensional (3D) variation in floral morphology at micro‐ and nano‐resolutions are increasingly accessible. In herkogamous flowers, such as those of Theobroma cacao, structural barriers between anthers and stigmas represent bottlenecks that restrict pollinator size and access to reproductive ...
Katherine A. Wolcott +4 more
wiley +1 more source
Automated identification of diverse Neotropical pollen samples using convolutional neural networks
Methods in Ecology and Evolution, Volume 13, Issue 9, Page 2049-2064, September 2022., 2022 Abstract Pollen is used to investigate a diverse range of ecological problems, from identifying plant–pollinator relationships to tracking flowering phenology. Pollen types are identified according to a set of distinctive morphological characters which are understood to capture taxonomic differences and phylogenetic relationships among taxa.
Surangi W. Punyasena +4 more
wiley +1 more source
Functional Ecology, Volume 36, Issue 8, Page 1858-1872, August 2022., 2022 Read the free Plain Language Summary for this article on the Journal blog. Abstract Variation in leaf functional traits along environmental gradients can reveal how vascular epiphytes respond to broad‐ and small‐scale environmental gradients. Along elevational gradients, both temperature and precipitation likely play an important role as drivers of ...
Valeria Guzmán‐Jacob +8 more
wiley +1 more source
The role of nutritional impairment in carbon‐water balance of silver fir drought‐induced dieback
Global Change Biology, Volume 28, Issue 14, Page 4439-4458, July 2022., 2022 Declining silver fir trees show lower foliar concentrations of essential nutrients such as P, K, Cu and Ni than non‐declining trees. This nutritional impairment exacerbates and amplifies the negative effects of drought on tree functioning and growth, considering the relationship of tree nutritional status with water‐use efficiency and growth resilience
Ester González de Andrés +7 more
wiley +1 more source
Variación morfológica del labelo de Vanilla pompona (Orchidaceae) en Oaxaca, México
Revista Mexicana de Biodiversidad, 2019 En orquídeas, la forma y tamaño de caracteres florales como el labelo, sirve para clasificar variación dentro y entre especies. El objetivo del presente trabajo fue caracterizar la variación morfológica infraespecífica a través del labelo de Vanilla ...
Jesús Hernández-Ruíz +2 more
doaj +1 more source
Seasonal dietary niche contraction in coexisting Neotropical frugivorous bats (Stenodermatinae)
Biotropica, Volume 52, Issue 4, Page 749-757, July 2020., 2020 Abstract Tropical dry forests are characterized by punctuated seasonal precipitation patterns that drive primary production and the availability of fruits, seeds, flowers, and insects throughout the year. In environments in which the quantity and quality of food resources varies seasonally, consumers should adjust their foraging behavior to maximize ...
Jeremy Ryan Shipley, Cornelia W. Twining
wiley +1 more source
Moth assemblages in Costa Rica rain forest mirror small‐scale topographic heterogeneity
Biotropica, Volume 52, Issue 2, Page 288-301, March 2020., 2020 Abstract In many tropical lowland rain forests, topographic variation increases environmental heterogeneity, thus contributing to the extraordinary biodiversity of tropical lowland forests. While a growing number of studies have addressed effects of topographic differences on tropical insect communities at regional scales (e.g., along extensive ...
Dominik Rabl +4 more
wiley +1 more source
La variación en las unidades fraseológicas
Revista Nebrija de Linguistica Aplicada a la Enseñanza de Lenguas, 2022 Se concibe la variación como un cambio en la forma de las unidades que no afecta al significado. El cambio da lugar a variantes de una unidad que, por no modificar el significado, constituye una invariante de contenido.
Inmaculada Penadés Martínez
doaj +3 more sources
Botanical Sciences, 2021 Antecedentes: Con base en caracteres morfológicos de hojas, flores y frutos se han segregado nuevas especies del complejo Magnolia mexicana en México.
Marisol Gutierrez Lozano +5 more
doaj +1 more source
Transformación morfológica y funcional del borde oriental de Bogotá: explicaciones sobre la gentrificación y la segregación residencial de áreas centrales [PDF]
, 2016 El borde oriental de Bogotá ha experimentado transformaciones en su morfología en los últimos 40 años, cuyas consecuencias se relacionan con fenómenos de cambio de uso, segregación, crecimiento en altura, presión sobre la infraestructura, mayor ...
Sepúlveda Corzo, Juan Gabriel
core +1 more source