Results 41 to 50 of about 242,539 (214)
La contribución del daño por fuego en restringir los bosques montanos de Polylepis australis a las quebradas: aportes de una comparación sin réplicas [PDF]
Con frecuencia los bosques de altura están restringidos a quebradas y existe controversia sobre los motivos de esta distribución, con un rango de argumentos que van desde los que afirman que en las quebradas existen mejores condiciones abióticas, hay ...
Alinari, María Julieta+2 more
core
Characterization of melliferous species in the tropical dry forest oriented to their conservation
In the Quimis area of the Jipijapa Canton, an investigation was carried out related to the characterization of plant species that provide sustenance to bees in the production of honey that is used by local residents involved in the Aroma y Miel ...
Alfredo Jiménez González+3 more
doaj
Chemical ecology of symbioses in cycads, an ancient plant lineage
Summary Cycads are an ancient lineage of gymnosperms that maintain a plethora of symbiotic associations from across the tree of life. They have myriad morphological, structural, physiological, chemical, and behavioral adaptations that position them as a unique system to study the evolution, ecology, and mechanism of symbiosis.
Shayla Salzman+6 more
wiley +1 more source
Las estructuras de los árboles [PDF]
Los árboles se autodiseñan y modifican su forma de tal modo que todas sus células estén sometidas a la misma tensión. Hacerlo así incrementa su seguridad y reduce la posibilidad de caer y morir.
Cabrero-Ballarín, J.M. (José Manuel)
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Las variables diámetro y altura son factores indispensables en inventarios forestales para determinar el volumen que se almacena en el bosque. El objetivo de esta investigación fue generar una ecuación para ocho entidades federativas que permita estimar ...
Juan Carlos Guzmán Santiago+3 more
doaj +1 more source
Abstract Citizen science data are increasingly used for ecological research, biodiversity conservation and monitoring. However, these data often present significant analytical challenges due to uneven recording efforts by citizen scientists. Biases caused by intra‐annual differences in levels of recording activity can be particularly severe, hindering ...
Inês T. Rosário+3 more
wiley +1 more source
Efecto de distintos niveles de carga frutal sobre el calibre, calidad de la fruta y desarrollo vegetativo del arbol, en manzanos cv. ultra red gala, sobre portainjerto MM 111. [PDF]
48 p.Durante la temporada 2006/07 se realizó un ensayo para determinar el efecto de la carga frutal sobre la distribución de calibre, calidad de manzanas, y el desarrollo vegetativo de los árboles de un huerto comercial, perteneciente a Agropacal S.A ...
Vasquez Araya, Luis Marcelo+1 more
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Abstract Rural communities in Amazonia rely on harvesting Mauritia flexuosa fruit, a dominant peatland palm, for their subsistence and income. However, these palms are felled to harvest the fruits, which has led to reduced resource availability due to the pressure exerted by the increasing fruit demand.
Eurídice N. Honorio Coronado+24 more
wiley +1 more source
WOODPECKER CAVITY‐TREE SELECTION IN THE ECUADOREAN AMAZON REGION [PDF]
∙ Tree cavities are important as sites for nesting and roosting, but their availability or use has been little studied in the Neotropics. We studied woodpecker (Picidae) cavity‐tree selection in disturbed and undisturbed landscapes in the Amazonian ...
Martin, Kathy, van der Hoek, Yntze
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We provide the first surveillance map for emerald ash borer incursions in GB with potential for deployment by government agencies and stakeholders concerned with biosecurity. Our framework establishes optimal surveillance locations depending on factors, including detection within different timeframes, knowledge certainty of entry pathways and ...
Vasthi Alonso Chávez+11 more
wiley +1 more source