Results 41 to 50 of about 211,717 (209)

Intraspecific variability rivals interspecific differences in root traits of temperate tree seedlings

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract Global change and associated disturbances are increasing the risk of regeneration failure for tree species in temperate forests. Seedlings are particularly vulnerable to water stress due to their shallow root systems, making below‐ground plasticity a potentially key ...
Morgane Dendoncker   +11 more
wiley   +1 more source

Innovación educativa mediante digitalización y categorización de casos de histopatología veterinaria en un atlas virtual

open access: yesIngenierías USBMed
Las herramientas virtuales son un apoyo para el aprendizaje, sobre todo en áreas del conocimiento en las que el componente visual y la interpretación de imágenes son básicos para su entendimiento, como es la histología y la histopatología.
Jeyson Simbaqueva Peña   +3 more
doaj   +1 more source

Good days, bad days: Weather patterns driving bryophyte carbon‐exchange dynamics in tropical rainforest canopies

open access: yesFunctional Ecology, EarlyView.
Read the free Plain Language Summary for this article on the Journal blog. Abstract The physiology of tropical mosses, liverworts and lichens may be challenged by the daily weather patterns in lowland rainforests. Since these poikilohydric organisms can only photosynthesize and respire when hydrated, unfavourable timing of light and water availability (
Monica B. Berdugo   +7 more
wiley   +1 more source

Una nueva especie de Liolaemus del grupo alticolor (Iguania: Liolaemidae) de la puna salteña, Argentina. [PDF]

open access: yes, 2002
En este trabajo se describe una nueva especie de Liolaemus del grupo alticolor. Liolaemus yanalcu n. sp. se encuentra distribuido en los alrededores del Nevado del Acay en un área aproximada de 400 km2, entre los 3730 y los 4305 m de elevación.
Martinez Oliver, Inés   +1 more
core   +1 more source

Bromelias de Colombia: una especie nueva de Pitcairnia [PDF]

open access: yes, 1995
A new species of Pitcairnia (Bromeliaceae) is described, ilustrated and discussed. This species is found in the Cordillera Central of Colombia, departamento de Antioquia, in a relictual humid mountain forestSe describe, ilustra y discute una nueva ...
Betancur Betancur, Julio Cesar   +1 more
core  

Recent progress in studies of the last million years of human physical and behavioural evolution Avancées récentes dans l’étude du dernier million d'années d’évolution physique et éthologique de l'espèce humaine

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
This article presents a synthesis of recent developments in the study of human evolution over the past five years. It begins with an overview of hominin species nomenclature and diversity, followed by an examination of the proposed population bottleneck ∼900,000 years ago.
James Cole   +3 more
wiley   +1 more source

The emergence and complexification of symbolic practices in the Homo lineage: an archaeological and cognitive perspective Émergence et complexification des pratiques symboliques dans la lignée Homo : une approche archéologique et cognitive

open access: yesJournal of the Royal Anthropological Institute, EarlyView.
Recent archaeological discoveries, reviewed in this essay, challenge traditional views on the emergence of human symbolic cognition. Once believed to have originated in Europe around 40,000 years ago, new evidence shows it emerged much earlier across diverse regions.
Francesco d'Errico   +3 more
wiley   +1 more source

El jardín botánico como recurso didáctico

open access: yesRevista Eureka sobre Enseñanza y Divulgación de las Ciencias, 2005
El presente artículo tiene como objetivo mostrar una experiencia realizada por un centro escolar dentro de la actividad Educación Ambiental en la Red Jardines Botánicos (Programa ALDEA), que viene llevándose a cabo en los últimos tres cursos ...
Antonio Salvador García-Márquez
doaj  

Una nueva especie de Aragoa [PDF]

open access: yes, 1958
Especie bien caracterizada, fácilmente distinguible de las hasta ahora conocidas, por sus hojas verticiladas de a tres, espatuladas y el tallo completamente glabro lo mismo que las ramas.
Romero Castañeda, Rafael   +1 more
core  

geohabnet: An R package for mapping habitat connectivity for biosecurity and conservation

open access: yesMethods in Ecology and Evolution, EarlyView.
Abstract Habitat connectivity is critical for the conservation of endangered and endemic species, and conversely, it can hinder efforts to contain the spread of harmful biological agents. Here, we introduce geohabnet: a general, spatially explicit, network‐based R package for evaluating, estimating and mapping landscape connectivity from continuous ...
Aaron I. Plex Sulá   +6 more
wiley   +1 more source

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