70 Works

Humor para aprender Matemática: Tareas matemáticas para reír y aprender

Luís Menezes, Pablo Flores, Floriano Viseu, Helena Gomes, António Ribeiro, Ana P. Martins & Mónica Guitart

Humor no ensino da Matemática: tarefas para a sala de aula

Luís Menezes, Helena Gomes, António Ribeiro, Ana Patrícia Martins, Pablo Flores, Floriano Viseu, Ana Maria Oliveira, Isabel Aires Matos, João Paulo Balula & Véronique Delplancq

Humor in mathematics teaching: tasks for the classroom

Luís Menezes, Helena Gomes, António Ribeiro, Ana Patrícia Martins, Pablo Flores, Floriano Viseu, Ana Maria Oliveira, João Paulo Balula & Verónique Delplancq

Cultural Tourism's Impacts on Rural Landscapes: The Opportunities and Challenges and how these can be addressed in the 1999 Cultural Tourism Charter Review

Fergus Tyler Maclaren, Cecilia Martinez Yang & Ivan Henares

Humor para aprender Matemática: Tarefas matemáticas para rir e aprender

Luís Menezes, Pablo Flores, Floriano Viseu, Helena Gomes, António Ribeiro, Ana Patrícia Martins & Mónica Guitart

Data from: Mutualism with plants drives primate diversification

José María Gómez & Miguel Verdú
Understanding the origin of diversity is a fundamental problem in biology. Evolutionary diversification has been intensely explored during the last years due to the development of molecular tools and the comparative method. However, most studies are conducted using only information from extant species. This approach probably leads to misleading conclusions, especially because of inaccuracy in the estimation of extinction rates. It is critical to integrate the information generated by extant organisms with the information obtained...

Data from: The role of pollinators in floral diversification in a clade of generalist flowers

José María Gómez, Francisco Perfectti & Juan Lorite
Pollinator-mediated evolutionary divergence has seldom been explored in generalist clades because it is assumed that pollinators in those clades exert weak and conflicting selection. We investigate whether pollinators shape floral diversification in a pollination generalist plant genus, Erysimum. Species from this genus have flowers that appeal to broad assemblages of pollinators. Nevertheless, we recently reported that it is possible to sort plant species into pollination niches varying in the quantitative composition of pollinators. We test...

Data from: The temporal dimension in individual-based plant pollination networks

Javier Valverde, Jose Maria Gomez-Reyes & Francisco Perfectti
The pollination success of animal-pollinated plants depends on the temporal coupling between flowering schedules and pollinator availability. Within a population, individual plants exhibiting disparate flowering schedules will be exposed to different pollinators when the latter exhibit temporal turnover. The temporal overlap between individual plants and pollinators will result in a turnover of interactions, which can be analyzed through a network approach. We have explored the temporal dynamics of individual-based plant networks resulting from pairwise similarities...

Data from: Isotopic evidence for oligotrophication of terrestrial ecosystems

Joseph M. Craine, Andrew J. Elmore, Lixin Wang, Julieta Aranibar, Marijn Bauters, Pascal Boeckx, Brooke E. Crowley, Melissa A. Dawes, Sylvain Delzon, Alex Fajardo, Yunting Fang, Lei Fujiyoshi, Alan Gray, Rossella Guerrieri, Michael J. Gundale, David J. Hawke, Peter Hietz, Mathieu Jonard, Elizabeth Kearsley, Tanaka Kenzo, Mikhail Makarov, Sara Marañón-Jiménez, Terrence P. McGlynn, Brenden E. McNeil, Stella G. Mosher … & Katarzyna Zmudczyńska-Skarbek
Human societies depend on an Earth System that operates within a constrained range of nutrient availability, yet the recent trajectory of terrestrial nitrogen (N) availability is uncertain. Examining patterns of foliar N concentrations ([N]) and isotope ratios (15N) from more than 42,000 samples acquired over 37 years, here we show that foliar [N] declined by 8% and foliar 15N declined by 0.8 – 1.9 ‰. Examining patterns across different climate spaces, foliar 15N declined across...

Thermal tolerance in Drosophila: repercussions for distribution, community coexistence and responses to climate change

José M. Alruiz, Ignacio Peralta-Maraver, Francisco Bozinovic, Mauro Santos & Enrico L. Rezende
Here we combined controlled experiments and field surveys to determine if estimates of heat tolerance predict distributional ranges and phenology of different Drosophila species in southern South America. We contrasted thermal death time curves, which consider both magnitude and duration of the challenge to estimate heat tolerance, against the thermal range where populations are viable based on field surveys in an 8-yr longitudinal study. We observed a strong correspondence of the physiological limits, the thermal...

Male incubation feeding and fleas

Juan Manuel Peralta-Sánchez & Jan-Åke Nilsson
Parasites exert a strong selection pressure on their hosts as manifested in behavioural antiparasite traits to reduce negative impacts on fitness. The numerous nest-dwelling ecto-parasites residing in avian nests make altricial birds excellent model-systems for investigating the relationship between parasites and their hosts. Here, we experimentally increased natural levels of hen fleas (Ceratophyllus gallinae) in blue tit (Cyanistes caeruleus) nests during incubation, and tested their effects on parental incubation behaviours and reproductive performance. Our experimental...

Data from: Within- and trans-generational effects of herbivores and detritivores on plant performance and reproduction

Adela González Megias
1. Mutualistic and antagonistic aboveground and belowground species have the potential to be involved in strong interactions that can either weaken or strengthen their individual impacts on plants. Their impacts can also have delayed effects on a plant's progeny by altering offspring traits and survival. Few studies have explored the effect of herbivore and detritivore interactions with parent plants on offspring vital life-cycle processes, such as seedling emergence rate, seedling establishment, and offspring survival. 2....

Data from: The effect of bioturbation by polychaetes (Opheliidae) on benthic foraminiferal assemblages and test preservation

José N. Pérez-Asensio, Julio Aguirre & Francisco J. Rodríguez-Tovar
Biological activity such as burrowing can alter benthic foraminiferal shell preservation and may also modify benthic foraminiferal assemblages by vertical mixing, inducing sediment homogenization. Here, we analyse benthic foraminiferal assemblages and taphonomy of upper Miocene marine deposits from Conil de la Frontera (Cádiz, south-western Spain). The deposits consist of marls displaying a pervasive alternation of intensively bioturbated beds dominated by Macaronichnus segregatis traces (ichnofabric index 4–5) and non-bioturbated beds. Benthic foraminiferal assemblages are dominated by...

Data from: Females know better: sex-biased habitat selection by the European wildcat

Teresa Oliveira, Fermin Urra, José María Lopez-Martín, Elena Balleteros-Duperón, José Miguel Barea-Azcón, Marcos Moleón, José Maria Gil-Sánchez, Paulo Celio Alves, Francisco Díaz-Ruíz, Pablo Ferreras & Pedro Monterroso
The interactions between animals and their environment vary across species, regions, but also with gender. Sex‐specific relations between individuals and the ecosystem may entail different behavioral choices and be expressed through different patterns of habitat use. Regardless, only rarely sex‐specific traits are addressed in ecological modeling approaches. The European wildcat (Felis silvestris silvestris) is a species of conservation concern in Europe, with a highly fragmented and declining distribution across most of its range. We assessed...

Data from: Sexual differences in head form and diet in a population of Mexican Lance-headed Rattlesnakes, Crotalus polystictus

Jesse M. Meik, Kirk Setser, Estrella Mociño-Deloya & Anna Michelle Lawing
Sexual dimorphism of phenotypic traits associated with resource use is common in animals, and may result from niche divergence between sexes. Snakes have become widely used in studies of the ecological basis of sexual dimorphism because they are gape-limited predators and their head morphology is likely to be a direct indicator of the size and shape of prey consumed. We examined sexual dimorphism of body size and head morphology, and sexual differences in diet in...

Mt. Etna Revised and Concise Seismic Catalog from 1999 (EtnaRCSC)

Salvatore Claudio Alparone, Graziella Barberi, Salvatore D'Amico, Giuseppe Di Grazia, Ferruccio Ferrari, Elisabetta Giampiccolo, Vincenza Maiolino, Antonino Mostaccio, Carla Musumeci, Antonio Scaltrito, Luciano Scarfì, Mariangela Sciotto, Salvatore Spampinato, Giuseppina Tusa, Tiziana Tuvè, Andrea Ursino & Luciano Zuccarello
The Etnean instrumental catalogue collects all the recorded earthquakes by the Permanent Seismic Network of the INGV-OE since Agoust 19, 1999. Earthquakes reported into the catalogue are localized by the analyst staff, that is, a group of people working in the seismological division, belonging to the INGV-OE. In order to produce a reliable product for the scientific community, localizations are carried out according to uniform scientific criteria shared among all analysts. Hypocentres and magnitudes of...

The accessibility to doctoral theses in Spain: A political change and a reconsidering of its nature

Isabel de Torres Ramírez & Dolores Ayuso-García
The term Grey Literature was cained in the XIX century in USA, thanks to the literature reports [Ramos de Carvalho, 2001]. In 1978, after the attempt to define Grey Literature (from now GL) identifying it with the non conventional one, the attending ones to the York Seminary –not without reticence- were forced to make an index of the documents that could be integrated in it. However, nowadays we have to take into account that communication...

Data from: Transcriptional profiling at whole population and single cell levels reveals somatosensory neuron molecular diversity

Isaac M. Chiu, Lee B. Barrett, Erika Williams, David E. Strochlic, Seungkyu Lee, Andy D. Weyer, Shan Lou, Gregory Bryman, David P. Roberson, Nader Ghasemlou, Cara Piccoli, Ezgi Ahat, Victor Wang, Enrique J. Cobos, Cheryl L. Stucky, Qiufu Ma, Stephen D. Liberles, Clifford J. Woolf & Gregory S Bryman
The somatosensory nervous system is critical for the organism’s ability to respond to mechanical, thermal, and nociceptive stimuli. Somatosensory neurons are functionally and anatomically diverse but their molecular profiles are not well-defined. Here, we used transcriptional profiling to analyze the detailed molecular signatures of dorsal root ganglion (DRG) sensory neurons. We used two mouse reporter lines and surface IB4 labeling to purify three major non-overlapping classes of neurons: 1)IB4+SNS-Cre/TdTomato+, 2)IB4-SNS-Cre/TdTomato+, and 3)Parv-Cre/TdTomato+ cells, encompassing the...

Data from: Ecological consequences of parasite host shifts under changing environments: more than a change of partner

Ana Mellado
(1) Parasitic plants, among many other parasitic organisms, are shifting in their geographic distribution in response to global change, establishing novel interactions with susceptible but previously unexposed host plants. Projections of future species assemblages in increasingly changing environments frequently overlook the strong capacity of these parasites to transform ecological systems, and host switching is considered a mere change of partner with no subsequent impact on ecosystem properties. (2) We explore the ecological consequences of parasite...

Data from: Independent evolution of ancestral and novel defenses in a genus of toxic plants (Erysimum, Brassicaceae)

Tobias Züst, Susan Strickler, Adrian Powell, Makenzie Mabry, Hong An, Mahdieh Mirzaei, Thomas York, Cynthia Holland, Pavan Kumar, Matthias Erb, Georg Petschenka, José-María Gomez, Francisco Perfectti, Caroline Mueller, Chris Pires, Lukas Mueller & Georg Jander
Phytochemical diversity is thought to result from coevolutionary cycles as specialization in herbivores imposes diversifying selection on plant chemical defenses. Plants in the speciose genus Erysimum (Brassicaceae) produce both ancestral glucosinolates and evolutionarily novel cardenolides as defenses. Here we test macroevolutionary hypotheses on co-expression, co-regulation, and diversification of these potentially redundant defenses across this genus. We sequenced and assembled the genome of E. cheiranthoides and foliar transcriptomes of 47 additional Erysimum species to construct a...

Brood parasitism, provisioning rates and breeding phenology of male and female magpie hosts

Marta Precioso, Mercedes Molina-Morales, Alfredo Sánchez-Tójar, Jesús M. Avilés & Juan G. Martínez
Parental care is a costly behaviour that raises the prospects of offspring survival. In species with biparental care these costs are shared by both parents, although there may be a conflict regarding the relative investment of each sex. Avian brood parasites leave all the costs of rearing offspring to their hosts. The magnitude of these costs and their consequences on the relative role of both sexes in parental care and future reproduction remain mostly unknown....

Humour in mathematics teaching: tasks for the classroom

Luís Menezes, Helena Gomes, António Ribeiro, Ana P. Martins, Pablo Flores, Floriano Viseu, Ana M. Oliveira, Isabel A. Matos, João P. Balula & Véronique Delplancq

Magnesium and calcium isotope fractionation during microbial dolomite formation

Michael Tatzel , Adina Paytan , Samantha Carter , Daniel A. Frick , Francisca Martinez-Ruiz , Zach A. DiLoreto , Maria Dittrich , Tomaso R. R. Bontognali & Mónica Sanchez-Román
Microbial mediation is considered an important process for the formation of primary dolomite at ambient temperature. Yet, no structural, mineralogical, chemical or isotopic means exist to discern this mode of dolomite formation from secondary dolomite. To explore the utility of metal isotopes in allowing this distinction we characterize magnesium and calcium stable isotope ratios in primary (proto)dolomites from a modern hypersaline environment. Samples from the Khor Al-Adaid sabkhas in Qatar show consistent isotopic differences of...

Pollen records of Miocene thermal maximum

Jean-Pierre Suc, Gonzalo Jiménez-Moreno & Mostefa Bessedik
In order to identify the northern latitudinal limit between mangroves composed of Avicennia only and diversified mangroves during the Cenozoic thermal maxima, a special attention was paid to the Middle Miocene Climatic Optimum (MMCO: 17–14 Ma) in the Mediterranean s.l. region, including the Mediterranean Basin s.s. and its former brackish appendix, the Paratethys (Popescu et al., accepted, Journ. Biogeogr.). Pollen data come from forty-five biostratigraphically well-dated marine samples from 8 locations belonging to the MMCO....

Data from: De novo active sites for resurrected Precambrian enzymes

Valeria A. Risso, Sergio Martinez Rodriguez, Adela M. Candel, Dennis M. Krüger, David Pantoja-Uceda, Mariano Ortega-Munoz, Francisco Santoyo-Gonzalez, Eric A. Gaucher, Shina Caroline Lynn Kamerlin, Marta Bruix, Jose A. Gavira & Jose M. Sanchez-Ruiz
Protein engineering studies often suggest the emergence of completely new enzyme functionalities to be highly improbable. However, enzymes likely catalysed many different reactions already in the last universal common ancestor. Mechanisms for the emergence of completely new active sites must therefore either plausibly exist or at least have existed at the primordial protein stage. Here, we use resurrected Precambrian proteins as scaffolds for protein engineering and demonstrate that a new active site can be generated...

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