Results 41 to 50 of about 54,574 (273)

Structural stability of plant–pollinator interactions despite seasonal abundance of long‐tongued hawkmoths

open access: yesOikos, EarlyView.
Seasonal environmental cycles affect plant–pollinator interactions by altering plant phenology. Periods of low resource availability can filter pollinators and reduce the complexity of interaction networks, but the extent to which the functional morphology of pollinators influences such filtering remains unclear.
Ugo M. Diniz   +3 more
wiley   +1 more source

HIDROFOBICIDAD EN ANDISOLES BAJO ROBLEDAL (Quercus humboldtii) Y PLANTACIONES FORESTALES (Pinus patula y Cupressus lusitanica) EN LA CUENCA DE LA QUEBRADA PIEDRAS BLANCAS (MEDELLÍN, COLOMBIA) HYDROPHOBICITY OF ANDISOLS OF OAK GROVES (Quercus humboldtii) AND TREE PLANTATIONS (Pinus patula and Cupressus lusitanica) IN THE PIEDRAS BLANCAS WATERSHED ( MEDELLÍN, COLOMBIA )

open access: yesRevista Facultad Nacional de Agronomía Medellín, 2004
En la cuenca de la quebrada Piedras Blancas se evaluó la persistencia de la repelencia al agua en el horizonte A de Andisoles bajo tres coberturas vegetales: Pinus patula, Cupressus lusitanica y Quercus humboldtii y en tres posiciones topográficas ...
Juan Raúl Duque Zapata   +3 more
doaj  

Speciation with gene flow

open access: yesPLANTS, PEOPLE, PLANET, EarlyView.
Biodiversity is threatened by human activities, with extinction debt accumulating rapidly. Many of these activities change the connectivity of populations, fragmenting existing population systems or bringing previously isolated populations or species into contact.
Zhiqin Long   +7 more
wiley   +1 more source

Cuantificación de Sustancias Marcadoras de Envejecimiento en Quercus humboldtii por Cromatografía Líquida de Alta Eficiencia

open access: yesTemas Agrarios, 2008
En la etapa de maduración de las bebidas alcohólicas se utilizan barriles de roble Americanos y Franceses, que al contacto con el aguardiente liberan sustancias que finalmente contribuyen con las características sensoriales del mismo. El siringaldehido y
Rafael E. González   +2 more
doaj  

An event study to provide validation of TING and CMIT geomagnetic middle-latitude electron densities at the F2 peak [PDF]

open access: yes, 2008
[1] The coupled thermosphere-ionosphere magnetosphere (CMIT) model and the Thermosphere Ionosphere Nested Grid (TING) model have been run to simulate the 15 May 1997 interplanetary coronal mass ejection\u27s (ICME) effects on the Earth\u27s ionosphere ...
Burns, A. G.   +7 more
core   +2 more sources

ECOSTRESS‐derived semi‐arid forest temperature and evapotranspiration estimates demonstrate drought and thinning impacts

open access: yesRemote Sensing in Ecology and Conservation, EarlyView.
This study demonstrates that ECOSTRESS lands surface temperature (LST) data are sensitive to forest thinning, regional drought, and their interaction. Consistent with high‐resolution UAV images, ECOSTRESS LST data indicate thinned forest had significantly greater temperature across years.
Temuulen Tsagaan Sankey   +9 more
wiley   +1 more source

Estudio cariológico de Quercus humboldtti Bonpl Caryological study of Quercus humboldtii Bonpl

open access: yesAgronomía Colombiana, 1989
Se comprobó que la especie del roble Ouercus humboldtii Bonpl. tiene 2 n= 24 cromosomas, al igual que la mayoría de las especies estudiadas de Quercus.
Alvarado de Coral Cecilia   +1 more
doaj  

Contrastive Self‐Categorization as a Resource for Defending Cultural Stereotypes

open access: yesSymbolic Interaction, EarlyView.
This study explores how speakers defend morally sanctionable cultural stereotypes from challenges in adult second language classrooms. Within the conversation analysis and membership categorization analysis frameworks, I examine two extended video‐recorded class discussions in which students maintain face‐threatening, stereotypical portrayals of ...
Nadja Tadic
wiley   +1 more source

C. Arnold Anderson y otros. Modernización

open access: yesRevista Mexicana de Ciencias Políticas y Sociales, 2022
C. Arnold Anderson y otros. Modernización, compilado por Myron Weiner. Trad. Juan Bruner. México. Editorial Roble, 1969, 433 pp.
Luis Haza Remus
doaj  

Temporal dynamics in functional fruit traits of native and invasive fleshy fruited plants in subtropical Andean forests

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Fruits encompass the energetic and material flow between both interacting parties in frugivore‐mediated seed dispersal. Since fruit traits matter in frugivores' foraging decisions, the temporal dynamics of fruit traits might influence interaction outcomes.
Irene M. A. Bender   +3 more
wiley   +1 more source

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