Results 41 to 50 of about 669,937 (225)

Baja movilidad social en Bolivia: Causas y consecuencias para el desarrollo [PDF]

open access: yes, 2002
El presente documento investiga la movilidad social en Bolivia y discute sus implicancias para la reducción de la pobreza y el crecimiento económico de largo plazo.
Andersen, Lykke E.
core  

Early detection strategies for invading tree pests: Targeted surveillance and stakeholder perspectives

open access: yesJournal of Applied Ecology, Volume 62, Issue 4, Page 857-871, April 2025.
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

El crecimiento económico en América Latina y sus perspectivas mas allá del sexenio perdido

open access: yesProblemas del Desarrollo, 2004
La volatilidad que caracterizó a la coyuntura regional e internacional en los últimos quince años dificulta pronosticar el crecimiento de América Latina en el mediano plazo.
Hubert Escaith
doaj  

Assessing disturbances in surviving primary forests of Europe

open access: yesConservation Biology, Volume 39, Issue 2, April 2025.
Abstract Primary forests are of paramount importance for biodiversity conservation and the provision of ecosystem services. In Europe, these forests are scarce and threatened by human activities. However, a comprehensive assessment of the magnitude of disturbances in these forests is lacking, due in part to their incomplete mapping.
José I. Barredo   +2 more
wiley   +1 more source

Esfuerzo reproductivo en moluscos: una revisión

open access: yesIntropica, 2013
Se llevó a cabo un análisis de cada uno de los índices que se han propuesto para estimar el esfuerzo reproductivo de moluscos con el fin de aclarar su pertinencia y determinación tanto conceptual como operativa.
Luz Adriana Velasco
doaj  

Validation of daily growth increments and estimation of growth rates of larval and early juvenile black skipjack, Euthynnus lineatus, using otoliths [PDF]

open access: yes, 1993
ENGLISH: Increments in otoliths (sagittae) were examined, using light and scanning electron microscopy, to determine ages and estimate growth rates of larval and early-juvenile black skipjack, Euthynnus lineatus.
Wexler, Jeanne B.
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The Unstable Relationship Between Drought Status and Leaf Water Content Complicates the Remote Sensing of Tree Drought Stress

open access: yesGlobal Change Biology, Volume 31, Issue 4, April 2025.
Remote sensing can monitor plant drought stress across ecosystems but is limited by uncertain links between physiological stress and measurements of water content. We examined how water potential and water content, measured in the field, laboratory, and via airborne imaging, vary over time and space in two oak species.
Indra Boving   +5 more
wiley   +1 more source

Resolución del Consejo de 9 de diciembre de 2004, sobre las perspectivas futuras de las tecnologías de la información y de las comunicaciones (TIC) [PDF]

open access: yes, 2004
El sector de las TIC, que abarca las tecnologías de información, comunicaciones electrónicas e industrias audiovisuales, es en sí mismo un sector económico de gran importancia con un potencial considerable de crecimiento futuro y con repercusiones en la ...
Consejo de la Unión Europea
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Sample coverage affects diversity measures of bird communities along a natural recovery gradient of abandoned agriculture in tropical lowland forests

open access: yesJournal of Applied Ecology, Volume 62, Issue 3, Page 480-491, March 2025.
Our results highlight the importance of standardizing biodiversity measures and incorporating beta diversity in biodiversity monitoring. We demonstrate that taxonomic, phylogenetic and functional bird diversity can be high in secondary forests within smallholder agricultural landscapes.
Mareike Kortmann   +19 more
wiley   +1 more source

Oral cancer risk and molecular markers [PDF]

open access: yes, 2017
El aspecto clínico y en especial el grado de displasia que pueden presentar las lesiones precancerosas de la cavidad oral sugieren su capacidad potencial de malignización.
Chimenos Küstner, Eduardo   +2 more
core  

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