Santiago Andrés-Sánchez

Santiago Andrés-Sánchez
Universidad de Salamanca · Department of Botany

PhD

About

65
Publications
7,516
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280
Citations
Additional affiliations
September 2014 - August 2022
Universidad de Salamanca
Position
  • Lecturer
May 2013 - August 2014
University of Cape Town
Position
  • PostDoc Position
September 2006 - September 2012
Universidad de Salamanca
Position
  • PhD

Publications

Publications (65)
Chapter
Full-text available
La integración de las tecnologías de la información y la comunicación en las aulas es uno de los objetivos prioritarios de las políticas educativas debido a que fomentan el aprendizaje activo y favorecen la motivación de los alumnos, lo que contribuye a la adquisición de aprendizajes significativos. En este trabajo se utiliza un cuestionario para e...
Chapter
Full-text available
Analizaremos el papel de la Universidad como formador de docentes, sus herramientas educativas y su papel como motor de cambio en un tema de urgencia social, en el que no puede mantenerse al margen. El Cambio Climático es actualmente el mayor desafío para la humanidad y la Educación se va a convertir en clave para enfrentarse a este problema. Con e...
Article
Full-text available
Implications of the differences in leaf life span are still subject to debate in the field of ecophysiology. Since leaf traits associated with these differences may be decisive for determining the distribution of tree species, this topic is particularly relevant in the context of climate change. This study analyzes the effects of the differences in...
Article
Full-text available
Resumen: Este estudio se centra en analizar las creencias que tienen profesores de España y Latinoamérica sobre el cambio climático, prestando especial atención a la percepción general que tienen del fenómeno, la concienciación, las preocupaciones y al conocimiento de determinados fundamentos científicos. Para recoger la información, se utilizó un...
Article
Full-text available
In order to increase scientific competence within the general population, it is important that teachers and educators have a realistic image of science and scientists, leaving aside superstitions and pseudoscientific claims that could be transmitted to their students. A starting point in this strategy is to make a good diagnosis of the future teach...
Book
Full-text available
Monsagro (Salamanca) es un lugar privilegiado donde enseñar Ciencias Naturales (Geología y Biología). Su peculiar paisaje de montaña junto a la Peña de Francia, la Georuta urbana, el Centro de Interpretación de los Mares Antiguos de Monsagro (CIMAM), el Parque Botánico y el Museo Cinegético-Etnográfico, proporcionan una amplia gama de actividades e...
Article
Full-text available
Climate Change is the most important threat to our planet. The Paris Agreement of 2015 provides a strategy to reduce its impacts through decarbonization, but this pathway requires a deep change in the society. Education has been identified as a major tool for adaptation and mitigation in many international treaties, but a general framework or strat...
Article
Full-text available
Climate Change is the most important threat to our planet. The Paris Agreement of 2015 provides a strategy to reduce its impacts through decarbonization, but this pathway requires a deep change in the society. Education has been identified as a major tool for adaptation and mitigation in many international treaties, but a general framework or strat...
Article
Full-text available
Climate Change is the most important threat to our society and all species on Earth. Large alterations in the climate are affecting every aspect of our society and in order to limit this impact we must decarbonize the economy before 2050. Although science presents solid evidence on the magnitude of the problem and outlines precisely the consequence...
Conference Paper
Full-text available
Climate Change is the most important challenge that humanity faces today. The rapid increase in global temperatures during the last century due to an exponential increase of greenhouse gas concentrations is altering the climate beyond our capacity of adaptation. In order to mobilize the society towards bold, informed, coherent responses, public ins...
Article
Full-text available
Filago ramosissima Lange (Asteraceae), new record for the Western Andalusia flora (Spain).Palabras clave: Filago, Asteraceae, flora, novedad, Andalucía Occidental, EspañaKey words: Filago, Asteraceae, flora, new record, Western Andalusia, Spain
Article
The basal grade of the large, widely‐distributed Helichrysum‐Anaphalis‐Pseudognaphalium (HAP) clade (Asteraceae, Gnaphalieae) comprises exclusively southern African taxa. These species possess unusual trait combinations relative to the remaining species (a high proportion of annuals, unusual capitulum arrangement, and low base chromosome numbers)....
Conference Paper
Full-text available
Climate Change is one of the most challenging problems that humanity faces today. To understand the magnitude and significance of the problem, society should use education as a way to create a fair, coherent and coordinated response. In this paper we describe the motivations, the design principles and the contents of a course that has been created...
Article
Full-text available
Premise of the Study Microsatellite primers were developed for the first time in the genus Filago (Gnaphalieae: Asteraceae). These markers will facilitate low‐scale phylogenetic, phylogeographic, and population genetic studies within the genus Filago. Methods and Results Ten pairs of polymorphic microsatellite primers (as well as five pairs of mon...
Data
The dataset includes 209 populations belonging to 20 of the 23 species and subspecies comprising Veronica subsection Pentasepalae. The measurements were taken from a leaf situated in the central segment of the stem (medium leaf) and from one on the apical shoot.
Article
Full-text available
This study exhaustively explores leaf features seeking diagnostic characters to aid the classification (assigning cases to groups, i.e. populations to taxa) in a polyploid plant-species complex. A challenging case study was selected: Veronica subsection Pentasepalae, a taxonomically intricate group. The “divide and conquer” approach was implemented...
Data
Example of the architecture of an artificial neural network. (I) input layers = 15; (H) hidden layers = 1; number of neurons = 8; (O) output layers = 8. Output layers correspond to taxa (see Table 1 for abbreviations), input layers correspond to variables (see Table 2 for abbreviations). Positive and negative connections are represented by black an...
Data
Box-plots corresponding to terminal groups (I to VIII) established through guided DAs. The black line in each box-plot indicates the threshold applied to perform the division. (DOCX)
Data
Voucher information. Voucher information for the Veronica samples used in this study. (DOCX)
Data
Systematic DA information. Discriminant functions, standard coefficients and structure matrix tables for the systematic unsupervised discriminant analysis. (XLSX)
Data
MCR vs. number of species. Misclassification rate in relation to the number of output layers (i.e., number of species and subspecies). Each point represents a different combination of randomly chosen OTUs. (TIF)
Data
Box-plots showing the divisions performed with the most discriminant characters found through unsupervised DAs. The black line in each box-plot indicates the threshold that minimizes the misclassification rate. (DOCX)
Data
Guided DA information. Discriminant functions, standard coefficients and structure matrix tables for the sequential guided discriminant analysis. (XLSX)
Article
Forty‐five populations of Pentanema corresponding to seven species included in the Pentanema conyzae clade have been studied using AFLP fingerprinting. The results show that allopolyploidization could have been involved in the diversification of this group, specifically in species P. langeanum and P. maletii. Molecular data confirm the presence of...
Article
Filago longilanata was collected only once until now by Maire and Wilczek in 1934. On its side, Filago prolifera is a rare plant endemic to North Africa, and most of the available herbarium materials corresponding to this species were collected in the late 19th or early 20th centuries. In this work, respectively two and three new populations of Fil...
Conference Paper
Full-text available
Studies in biogeography and botany have been revolutionized by the appearance of molecular systematics. These new tools provide a much more detailed and profound study of plant species, shedding light in the evolution of plant communities. The Mediterranean basin is an exceptionally interesting spot, being one of the most diverse regions in the nor...
Article
Full-text available
Se aportan cuatro nuevas localidades españolas para dos especies del género Filago L. (Gnaphaliaea: Asteraceae) poco frecuentes en la mitad septentrional de la Península Ibérica: Filago crocidion (Pomel) Chrtek & Holub y F. congesta Guss. ex DC. Tres de estas localidades corresponden a las primeras citas de F. crocidion en las comunidades autónomas...
Poster
Filago longilanata (Maire & Wilczek) Greuter is a species distributed in the semidesertic regions of Morocco. It is characterized by an annual life cycle, capitula in subglobose clusters, receptacular paleae 15-20 arranged helicoidally, aristate, achenes homomorphic with short- clavate twin hairs. This species was described by Maire and Wilczek in...
Conference Paper
The generic boundaries among Filago L. and related genera (e.g. Evax Gaertn. or Logfia Cass.) are difficult to establish due to the general scarcity of morphological characters traditionally considered relevant for classifying the group and the presence of some degree of homoplasy. In this situation Filago has been recircumscribed recently on the b...
Article
This paper is focused on the typification of 36 names provided for Filago species in order to fix their correct usage. Eight of them are accepted names, basionyms or replaced synonyms of accepted names at the specific rank ―i.e. Filago abyssinica, Filago argentea, Filago carpetana, Filago contracta, Filago eriocephala, Filago lutescens, Filago lusi...
Article
Full-text available
Four new Iberian localities for two species of the genus Filago L. (Gnaphaliaea: Asteraceae) are provided in this work: Filago crocidion (Pomel) Chrtek & Holub and F. congesta Guss. ex DC. Three of these new localities are first citations of F. crocidion at the regions of Castilla y León (So) and Aragón (Te). In addition, we provide with the first...
Article
Filago desertorum, as traditionally circumscribed, is a species that shows high levels of morphological variation. Previous authors have even suggested that this taxon should represent a heterogeneous assembly of true biological species. A taxonomic revision of the species included in the Filago desertorum clade was performed, and amplified fragmen...
Article
The variation and evolutionary dynamics of the twin hairs covering the achenes of the external female florets in Filago and related genera are studied using scanning electron microscope (SEM) and a Bayesian reconstruction of ancestral character states. A molecular phylogenetic hypothesis based on sequences of ITS and ETS (nuclear ribosomal DNA) and...
Article
Full-text available
The first complete taxonomic account of the genus Bombycilaena (DC.) Smoljan. based on the revision of more than 2000 sheets deposited in 28 herbaria is here presented. A detailed description of the genus and a key for the two species therein included are provided, as well as descriptions, habitat preferences, phenology, and geographic distribution...
Article
The first complete taxonomic account of the genus Bombycilaena (DC.) Smoljan. based on the revision of more than 2000 sheets deposited in 28 herbaria is here presented. A detailed description of the genus and a key for the two species therein included are provided, as well as descriptions, habitat preferences, phenology, and geographic distribution...
Poster
Veronica subsect. Pentasepalae Benth. (Plantaginaceae, sensu APG III) is one of the four subsections currently recognized within the monoplyletic subgenus V. subgen. Pentasepalae M.M. Mart. Ort., Albach & M. A. Fischer (Albach et al., 2008). This subsection comprises ca. 15 perennial species (and several infraspecific taxa) and is represented in th...
Article
Full-text available
The genus Logfia Cass. was described by Cassini in 1819 and has always been considered closely related to Filago L. The species of Logfia have been frequently included within Filago but, recently, based on morphological characters and DNA sequence analysis it has been demostrated that Logfia is more closely related to the American representatives o...
Article
Recent studies have proposed a monophyletic circumscription of Filago and a new subgeneric treatment for this genus. The aim of this study was to analyse the nuclear genome size in a phylogenetic framework in order to evaluate the systematic significance of this trait to provide insights into the dynamics of genome size evolution and to assess rela...
Article
La complejidad taxonómica del género Filago ha dado lugar a numerosos errores de determinación a lo largo de los años, lo que ha impedido un conocimiento preciso del área de distribución de las especies incluidas en el género. En este trabajo tratamos de recopilar y revisar críticamente todos los datos disponibles acerca de la distribución de los 2...
Article
The taxonomical complexity of the genus Filago has traditionally led to many determination mistakes which have hampered a precise knowledge of the exact distribution areas of the species included in the genus. We have tried to compile all the available data on the distribution in the Iberian Peninsula and Balearic Islands of 20 taxa from the genus...
Article
Full-text available
A complete nomenclatural treatment of the genera Filago L. and Logfia Cass. is provided, as well as a list of the species included in each genus and subgenus, as they have been newly circumscribed. Nomenclatural types for eleven validly published species names are designated, which correspond to (1) the types of names of widely used and long-establ...
Article
Full-text available
The Filago group (Asteraceae, Gnaphalieae) comprises eleven genera, mainly distributed in Eurasia, northern Africa and northern America: Ancistrocarphus, Bombycilaena, Chamaepus, Cymbolaena, Evacidium, Evax, Filago, Logfia, Micropus, Psilocarphus and Stylocline. The main morphological character that defines the group is that the receptacular paleae...
Article
Full-text available
The Filago group (Asteraceae, Gnaphalieae) comprises eleven genera, mainly distributed in Eurasia, northern Africa and northern America: Ancistrocarphus, Bombycilaena, Chamaepus, Cymbolaena, Evacidium, Evax, Filago, Logfia, Micropus, Psilocarphus and Stylocline. The main morphological character that defines the group is that the receptacular paleae...
Poster
Filago L. es un género de delimitación difícil (Filago en sentido amplio consta de entre 4 y 8 géneros diferentes según los distintos autores, entre ellos Evax Gaertn., por citar el más amplio) y con especies aparentemente muy similares y a menudo simpátricas (ya destacado en 1965 por Wagenitz, el principal monógrafo del género), lo que ha conducid...
Article
Full-text available
The aim of this study was to quantify the phenotypic differences amongst the taxa included in Veronica subgenus Pentasepalae, represented in the western Mediterranean area. In combination with previously obtained data on genotypic differences, this enabled the recognition of eight taxonomic units. The delimitation of the boundaries among species an...

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Projects (3)
Project
The aim of this project is to analize the impact of geitonogamy on the structure of genetic variability of Iberian-North-African endemic species Filago gaditana (Pau) Andrés-Sánchez & Galbany