1,721,372 research outputs found
[Carta] 1905 ago. 6, Ciudad de México [para] Enrique Olavarría : [nota de agradecimiento]
No full textLoreto F. Núñez agradece a Ernique de Olavarría un favor no especificado. Agradece favor
Distribution of isoprenoid emitters in the Quercus genus around the world: chemo-taxonomical implications and evolutionary considerations based on the ecological function of the trait
No full textEmission of isoprenoids by plants: their role in atmospheric chemistry, response to the environment, and biochemical pathways
No full text[Carta] 1903 mayo 8, Ciudad de México [para] Enrique Olavarría : [nota de pésame]
No full textLoreto F. Núñez expresa sus condolencias por la muerte de la madre de Enrique de Olavarría; Documento escrito en papel esquela. Pésame por la muerte de Adelaida Ferrari de Olavarría
[Carta] 1914 oct. 28, Ciudad de México [para] Enrique Olavarría : [nota de pésame]
No full textLoreto F. Núñez ofrece sus condolencias a Enrique de Olavarría con motivo de la muerte de su esposa, Matilde Landázuri de Olavarría. Lamenta el fallecimiento de la esposa de Enrique de Olavarría. En español
A Survey of Multiple Interactions Between Plants and the Urban Environment
No full textIt is well-acknowledged that plants in urban areas provide multiple ecosystem services. They contribute improving ambient quality and mitigating negative impacts of human presence, beautifying the anthropic environment, and promoting place identity and cultural heritage. However, the existence of plants in general, and trees in particular, cannot be considered independent on urban activities and infrastructures. Release of plant volatile compounds is profoundly affected in urban environments, in turn modifying plant relationships with other living organisms, both plants and animals, and affecting air chemistry and quality. Plants also interfere with stone artifacts, cultural and historical heritage. Plant-human coexistence requires precise and adequate managing measures, which have often been ignored in cities' government and planning. Plants and humans (and human infrastructures) are frequently considered as independent from each other and plant requirements are often disregarded, thus causing difficult or erroneous management and/or environmental damage. We review some of the most important ecosystem services provided by plants in urban environment, and also focus on possible negative effects of plants that may become relevant if urban vegetation is improperly managed and unintegrated in proper city planning, both of historical centers and of new towns or suburbs
Leaf volatile isoprenoids: an important defensive armament in forest tree species
No full textCurrent knowledge on the ecological impact of the emission of volatile isoprenoids by plants is reviewed. This trait is common to many terrestrial species but is scattered across different taxonomic groups; it appears to be related to other ecological traits rather than to phylogenetic relationships. Plants invest high resources to produce volatile isoprenoids, which are likely to play multiple roles in the defence against biotic and abiotic stressors. We describe how constitutive and induced volatile isoprenoids may directly or indirectly defend plants, and briefly address how indirect defence may involve communication with other trophic levels beyond the simple plant-herbivory interaction. It is discussed that, as metabolically costly defensive mechanisms are only activated after attacks, induced volatile isoprenoids may also prime other biochemical pathways that are involved in stress resistance responses. It is also surmised that attacked plants may also use volatiles as an airborne communication to signal the attack to other leaves or other plant organs, or even other plants, eliciting defence responses
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