Person: Gavilán García, Rosario Gloria
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First Name
Rosario Gloria
Last Name
Gavilán García
Affiliation
Universidad Complutense de Madrid
Faculty / Institute
Farmacia
Department
Farmacología, Farmacognosia y Botánica
Area
Botánica
Identifiers
5 results
Search Results
Now showing 1 - 5 of 5
- PublicationChanges in Foliar Functional Traits of S. pyrenaicus subsp. carpetanus under the Ongoing Climate Change: A Retrospective Survey(MDPI, 2020-03-23) Magaña Ugarte, Rosina; Escudero, Adrián; Sánchez Mata, Daniel; Gavilán García, Rosario GloriaThe sensitivity of stomatal behavior and patterning (i.e., distribution, density, size) to environmental stimuli, renders them crucial for defining the physiological performance of leaves. Thus, assessing long-term modifications in stomatal traits in conserved specimens arises as a valuable eco-physiological approach to predict how the rising trend of warmer, drier summers could a_ect plant fitness; particularly in mountain areas already experiencing climate aggravation and lacking the related monitoring schemes like Mediterranean high-mountains. Variations in foliar and stomatal traits were studied in conserved specimens of Senecio pyrenaicus subsp. carpetanus from Sierra de Guadarrama over the past 71 years. Our findings revealed decreasing trends in leaf width, stomatal size, and increasing tendency in stomatal density, all correlated with the recent 30-year climate exacerbation in these mountains. This evidenced a positive selection favoring traits that allow safeguarding plant performance under drier, hotter weather conditions. The significant relation between stomatal traits and climatic variables upholds the role of stomatal patterning in sensing environmental cues in this species, feasibly optimizing physiological responses involved in the growth–water loss trade-o_. The transition to smaller, densely packed stomata observed in recent decades could indicate local-adaptive plasticity in this species, enhancing stomatal response, as coarser environmental conditions take place in Sierra de Guadarrama.
- PublicationPhotoprotective Strategies in Mediterranean High-Mountain Grasslands(MDPI, 2021-03-22) Magaña Ugarte, Rosina; Gómez-Serranillos Cuadrado, María Pilar; Escudero, Adrián; Gavilán García, Rosario GloriaAlbeit the remarkably high Ultraviolet B loads, high temperatures, and drought stress substantiate the need for efficient photoprotective strategies in Mediterranean high-mountain plants, these remain understudied. Considering the sensitivity of photosystems to extreme conditions, we evaluated an environmental gradient’s weight on the photoprotection of five high-mountain specialists from Central Spain. Diurnal and seasonal variations in chlorophyll, chlorophyll fluorescence, carotenoids, and xanthophylls in consecutive and climatically contrasting years were taken to evaluate the effect of the impending climate coarsening at the photosystem level. Our results revealed significant differences among species in the xanthophyll cycle functioning, acting either as a continuous photoprotective strategy enhancing photochemistry-steadiness; or prompted only to counteract the cumulative effects of atypically adverse conditions. The lutein cycle’s involvement is inferred from the high lutein content found in all species and elevations, acting as a sustained photoprotective strategy. These findings added to high de-epoxidation state (DEPS) and minor seasonal changes in the chlorophyll a/b ratio, infer the xanthophyll and Lutein cycles are crucial for upkeeping the photosystems’ optimal functioning in these plants heightening their photoprotective capacity during periods of more unfavorable conditions. Nevertheless, an atypically dry growing season’s detrimental effect infers the feasible surpassing of stress-thresholds and the precariousness of the communities’ functional diversity under climate change.
- PublicationEstudio de las relaciones entre la vegetación y el clima en el Sistema Central Español(Universidad Complutense de Madrid, Servicio de Publicaciones, 2002) Gavilán García, Rosario Gloria; Fernández González, FedericoSe ha realizado un estudio fitoclimático en el sistema central español que incluye, de una parte, el estudio de la vegetación leñosa: bosques, orlas arbustivas y matorrales. De las dos ultimas se ha realizado un estudio sintaxonómico por medio de análisis multivariables. La caracterización climática del territorio también fue desarrollada mediante dicho tipo de técnicas, con objeto de obtener una regionalización del mismo. El uso de índices bioclimáticos en este estudio impuso su estudio previo para conocer su funcionamiento en el territorio, comparándolos frente a una variable biótica: vegetación arbórea. La correlación de las variables bióticas (vegetación) y las abióticas (variables climáticas) se realizó de dos maneras. Primero por sobreimpresión de las primeras en los resultados obtenidos de la clasificación y ordenación numéricas. En este sentido, las comunidades vegetales caracterizadas por parametros climáticos muy determinados fueron las que mejor se separaron. El analisis discriminante, se reveló como una tecnica de gran utilidad debido a su poder selectivo de variables climáticas (elementales e índices) y a su poder discriminador de comunidades vegetales
- PublicationBaViBo: Banco Virtual de Botánica: retos online para estudiar y repasar prácticas(2023-07-28) Pala Paul, Jesús; Arias García, Concepción; De Soto Suárez, Lucía; Gavilán García, Rosario Gloria; Prada Moral, María Carmen; Puelles Gallo, María; Usano Alemany, Jaime; García Álvarez, Lorena; Martínez Atienza, Félix; Varela Sánchez, David; Abad Calderón, Rubén; Alonso Flores, Hugo; Belichenko, Mikhail; Bravo Castaño, Manuela; Lázaro Lobo, Adrián; Pérez Pérez, Yolanda
- PublicationFlipped Learning y Web App de Plantas Medicinales Nuevas estrategias educativas aplicadas al ámbito de la enseñanza en la asignatura de Farmacognosia y Fitoterapia(2017-06-26) Gómez-Serranillos Cuadrado, María Pilar; González Burgos, Elena; Fernández Moriano, Carlos; Iglesias Peinado, Irene; Gavilán García, Rosario Gloria; Garcia Broncano, Rosario