Interactive effect of tree canopy cover and defoliation on growth of Festuca pallescens in mediterranean sylvopastoral systems in NW Patagonia, Argentina

info:eu-repo/semantics/publishedVersio

Stand density management diagrams of Eucalyptus viminalis: predicting stem volume, biomass and canopy cover for different production purposes

Stand density management diagrams (SDMD) provide a guide for forest density management taking into account stands attributes such as trees´ diameter or volume. One of the most common species planted in Pampean plains of Argentina is Eucalyptus viminalis for multiple objectives: solid wood use or firewood in local markets, pulp for cellulose industry and to provide services for agriculture and cattle raising (windbreaks or cattle refuge). The objective of this study was to gather the available production information /inventory dataand to develop a first SDMD for estimating standing volume, biomass and canopy cover of E. viminalis as a tool for forest managers aiming at different plantation purposes. Data to develop the SDMD were obtained from 161 plots, distributed along a climate and soil gradient. We also generated two predictive equations capable of estimating dominant height from the diameter of the trees as well as canopy cover from stand basal area. As an example of application, the SDMD was used to estimate the wood production of three alternative systems: a) an unmanaged plantation (simulating a common practice in the region), b) a mixed production system such as an agroforestry system, and c) a plantation that maximizes wood biomass or volume production.Fil: Gyenge, Javier Enrique. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; ArgentinaFil: Lupi, A.. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Ferrere, P.. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Milione, Germán Marcelo. Universidad Nacional del Centro de la Provincia de Buenos Aires. Rectorado. Instituto de Hidrología de Llanuras - Sede Azul. Provincia de Buenos Aires. Gobernación. Comisión de Investigaciones Científicas. Instituto de Hidrología de Llanuras - Sede Azul; ArgentinaFil: Martinez Meier, Alejandro Gabriel. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Caballé, G.. Instituto Nacional de Tecnología Agropecuaria; ArgentinaFil: Dominguez Daguer, Diego Rafael. No especifíca;Fil: Fernandez, Maria Elena. Instituto Nacional de Tecnología Agropecuaria. Centro Regional Buenos Aires Sur. Estación Experimental Agropecuaria Balcarce. Agencia de Extensión Rural Balcarce; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata; Argentin

Faja milonítica El Cortijo: puesta en valor de su patrimonio geominero y propuesta de un nuevo sitio de interés geológico en Tandil, Buenos Aires

El basamento del Sistema de Tandilia reúne a las rocas más antiguas de la Argentina, las cuales guardan una valiosa información de los procesos geológicos ocurridos hace aproximadamente 2.200 Ma. Entre estas rocas ígneo-metamórficas (Complejo Buenos Aires) se encuentran las que integran la Formación El Cortijo, que contrastan notoriamente con el resto por sus características mineralógicas, metamórficas y estructurales. Esta Formación está constituida por rocas típicas de una cuenca oceánica desarrollada durante el lapso Neoarqueano - Paleoproterozoico, fuertemente milonitizadas. Aflora en las cercanías de la ciudad de Tandil, a lo largo de una faja de 3 kilómetros con rumbo este-oeste (aquí denominada Faja milonítica El Cortijo), a la que se accede por la Ruta Nacional 226. Tandil es una ciudad reconocida por su origen minero, actualmente con una fuerte impronta turística y una infraestructura óptima para ofrecer diversos circuitos geomineros. Esta contribución tiene como objetivo presentar un nuevo sitio de interés geológico en Tandil, que junto con los otros circuitos geoturísticos urbanos, manifieste el valor geológico de la región. Esto conduciría a su protección y podría impulsar la creación de un futuro Parque Geológico, producto de la integración de todos los geositios conocidos además del aquí propuesto. El trabajo realizado incluyó un relevamiento del área mediante imágenes satelitales y actividades de campo que permitieron seleccionar un conjunto de canteras labradas en la faja milonítica que constituye el geositio propuesto. Este sector de la provincia de Buenos Aires reúne todos los atributos necesarios para establecer un sitio de interés geológico como el sugerido, considerando sus riquezas paisajísticas y geológicas relacionadas con la evolución geológica y tectónica del basamento de Tandilia

MAF amplification licenses ERα through epigenetic remodelling to drive breast cancer metastasis

MAF amplification increases the risk of breast cancer (BCa) metastasis through mechanisms that are still poorly understood yet have important clinical implications. Oestrogen-receptor-positive (ER+) BCa requires oestrogen for both growth and metastasis, albeit by ill-known mechanisms. Here we integrate proteomics, transcriptomics, epigenomics, chromatin accessibility and functional assays from human and syngeneic mouse BCa models to show that MAF directly interacts with oestrogen receptor alpha (ERα), thereby promoting a unique chromatin landscape that favours metastatic spread. We identify metastasis-promoting genes that are de novo licensed following oestrogen exposure in a MAF-dependent manner. The histone demethylase KDM1A is key to the epigenomic remodelling that facilitates the expression of the pro-metastatic MAF/oestrogen-driven gene expression program, and loss of KDM1A activity prevents this metastasis. We have thus determined that the molecular basis underlying MAF/oestrogen-mediated metastasis requires genetic, epigenetic and hormone signals from the systemic environment, which influence the ability of BCa cells to metastasize

Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea neutrino telescope

[EN] Despite dedicated research has been carried out to adequately map the distribution of the sperm whale in the Mediterranean Sea, unlike other regions of the world, the species population status is still presently uncertain. The analysis of two years of continuous acoustic data provided by the ANTARES neutrino telescope revealed the year-round presence of sperm whales in the Ligurian Sea, probably associated with the availability of cephalopods in the region. The presence of the Ligurian Sea sperm whales was demonstrated through the real-time analysis of audio data streamed from a cabled-to- shore deep-sea observatory that allowed the hourly tracking of their long-range echolocation behaviour on the Internet. Interestingly, the same acoustic analysis indicated that the occurrence of surface shipping noise would apparently not condition the foraging behaviour of the sperm whale in the area, since shipping noise was almost always present when sperm whales were acoustically detected. The continuous presence of the sperm whale in the region confirms the ecological value of the Ligurian sea and the importance of ANTARES to help monitoring its ecosystemsThe authors acknowledge the financial support of the funding agencies: Centre National de la Recherche Scientifique (CNRS), Commissariat a lenergie atomique et aux energies alternatives (CEA), la Commission Europeenne (FEDER fund and Marie Curie Program), Institut Universitaire de France (IUF), IdEx program and UnivEarthS Labex program at Sorbonne Paris Cite (ANR-10-LABX-0023 and ANR-11-IDEX-0005-02), Region Ile-de-France (DIM-ACAV), Region Alsace (contrat CPER), Region Provence-Alpes-Cote d'Azur, Departement du Var and Ville de La Seyne-sur-Mer, France; Bundesministerium fur Bildung und Forschung (BMBF), Germany; Istituto Nazionale di Fisica Nucleare (INFN), Italy; Stichting voor Fundamenteel Onderzoek der Materie (FOM), Nederlandse organisatie voor Wetenschappelijk Onderzoek (NWO), the Netherlands; Council of the President of the Russian Federation for young scientists and leading scientific schools supporting grants, Russia; National Authority for Scientific Research (ANCS), Romania; Ministerio de Economia y Competitividad (MINECO), Prometeo and Grisolia programs of Generalitat Valenciana and MultiDark, Spain; Agence de l'Oriental and CNRST, Morocco. We also acknowledge the technical support of Ifremer, AIM and Foselev Marine for the sea operation and the CC-IN2P3 for the computing facilitiesAndre, M.; Caballé, A.; Van Der Schaar, M.; Solsona, A.; Houégnigan, L.; Zaugg, S.; Sanchez, AM.... (2017). Sperm whale long-range echolocation sounds revealed by ANTARES, a deep-sea neutrino telescope. Scientific Reports. 7:1-12. https://doi.org/10.1038/srep45517S1127Aguilar, J. A. et al. ANTARES: the first undersea neutrino telescope. Nucl Inst and Met Phys Res A. 656, 11–38 (2011a).Aguilar, J. A. et al. AMADEUS - The Acoustic Neutrino Detection Test System of the ANTARES Deep-Sea Neutrino Telescope -. Nucl Inst and Met Phys Res A. 626–627, 128–143 (2011b).Ruhl, H. et al. Societal need for improved understanding of climate change, anthropogenic impacts, and geo-hazard warning drive development of ocean observatories in European Seas. Prog Oceanog. 91, 1–33 (2011).Tamburini, C. et al. Deep-sea bioluminescence blooms after dense water formation at the ocean surface. PLoS One. 8(7), e67523. doi: 10.1371/journal.pone.0067523 (2013).Van Haren, H. et al. Acoustic and optical variations during rapid downward motion episodes in the deep North Western Mediterranean. Deep Sea Res I. 58, 875–884 (2011).Van der Graaf, A. J. et al. European Marine Strategy Framework Directive - Good Environmental Status (MSFD GES): Report of the Technical Subgroup on Underwater noise and other forms of energy (2012).Hatch, L. T., Clark, C. W., Van Parijs, S. M., Frankel, A. S. & Ponirakis, D. W. Quantifying Loss of Acoustic Communication Space for Right Whales in and around a U.S. National Marine Sanctuary. Conserv Biol. 26, 983–994 (2012).André, M. et al. Low-frequency sounds induce acoustic trauma in cephalopods. Front. Ecol. Environ. 9, 489–493 (2011).Solé, M. et al. Does exposure to noise from human activities compromise sensory information from cephalopod statocysts? Deep Sea Res. II. 95, 160–181 (2013).Solé, M. et al. Ultrastructural damage of Loligo vulgaris and Illex coindetii statocysts after low frequency sound exposure. PLoS One 8(10), e78825. doi: 10.1371/journal.pone.0078825 (2013).André, M. et al. Listening to the Deep: Live monitoring of ocean noise and cetacean acoustic signals. Mar Pollut Bull. 63, 18–26 (2011).Whitehead, H. Sperm whales: social evolution in the ocean(The University of Chicago Press, Chicaho, 2003).Mohl, B., Wahlberg, M., Madsen, P. T., Heerfordt, A. & Lund, A. The monopulsed nature of sperm whale clicks. J Acous Soc Am. 114, 1143–1154 (2003).André, M., Johansson, T., Delory, E. & van der Schaar, M. Foraging on squid: the sperm whale mid-range sonar. Jour Mar Biol Assoc. 87, 59–67 (2007).Madsen, P., Wahlberg, M. & Møhl, B. Male sperm whale (Physeter macrocephalus) acoustics in a high-latitude habitat: implications for echolocation and communication. Behav Ecol Sociobiol. 53, 31, doi: 10.1007/s00265-002-0548-1 (2002).Gannier, A., Drouot, V. & Goold, J. C. Distribution and relative abundance of sperm whales in the Mediterranean Sea . Mar Ecol Prog Ser. 243, 281–293 (2000).Drouot, V., Gannier, A. & Gould, J. C. Summer social distribution of sperm whales in the Mediterranean Sea. J Mar Biol Ass. 84, 675–680 (2004).Pavan, G. et al. G. Short Term and Long Term Bioacoustic Monitoring of the Marine Environment. Results from NEMO ONDE Experiment and Way Ahead in Computational bioacoustics for assessing biodiversity . Proceedings of the International Expert meeting on IT-based detection of bioacoustical patterns(ed. Frommolt, K. H., Rolf Bardeli, R. & Clausen, M. ) 7–14 (Federal Agency for Nature Conservation, Bonn, 2008).Frantzis, A. et al. Sperm whale presence off South-West Crete, Eastern Mediterranean Sea in Proc. 13th Ann. Conf. ECS. 214–217 (Eur Res Cet, Valencia, 1999).Notarbartolo-Di-Sciara, G. Sperm whales, Physeter macrocephalus, in the Mediterranean Sea: a summary of status, threats, and conservation recommendations. Aquatic Conserv. Mar. Freshw. Ecosyst. 24, 4–10. doi: 10.1002/aqc.2409 (2014).Pace, D. S., Mussi, B., Gordon, J. C. D. & Würtz, M. Ecology, Behaviour and Conservation of Sperm Whale in the Mediterranean Sea in Aquatic Conserv . Mar. Freshw. Ecosyst. 24 (ed. Wiley, J. ) 1–118 (Wiley Online library, 2014).Rendell, L. E. & Frantzis, A. Mediterranean sperm whales, Physeter macrocephalus: the precarious state of a lost tribe In Medit. Mar. Mam. Ecol. Cons. 75 (ed. Notarbartolo di Sciara, G., Podestà, M. P. & Curry, B. E. ) 37–74, doi: 10.1016/bs.amb.2016.08.001 (Advances in Marine Biology, Academic Press/Elsevier, 2016).Di Natale, A. & Notarbartolo di Sciara, G. A review of the passive fishing nets and trap fisheries in the Mediterranean Sea and of the cetacean bycatch In Gillnets and cetaceans(ed. Perrin, W. F., Donovan, G. P. & Barlow, J. ) 189–202 (Rep Int Whal Comm, 1994).Jaquet, N., Whitehead, H. & Lewis, M. Relationship between sperm whale distribution and primary productivity over large spatial scale in the Pacific ocean. Eur Res Cet. 9, 188–192 (1995).Millot, C. Circulation in the Western Mediterranean Sea. Oceanol Acta. 10, 143–150 (1987).Morel, A. & André, J. M. Pigment distribution and primary production in the Western Mediterranean as derived from coastal zone color scanner observations. J Geophy Res. 96, 2685–12698 (1991).Crépon, M., Wald, L. & Monget, J. M. Low-frequency waves in the Ligurian Sea during December 1977. J Geophys Res. 87, 595–600 (1982).Prieur, L. & Sathyendranath, S. An optical classification of coastal and oceanic waters based on the specific spectral absorption curves of phytoplankton pigments, dissolved organic matter, and other particulate materials. Limnol Oceanogr. 26, 671–89 (1981).Kawakami, T. A review of sperm whale food. 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Development of a Quantitative Instrument to Measure Mobile Collaborative Learning (MCL) Using WhatsApp: The Conceptual Steps

It has been reported that WhatsApp, a social media application, had approximately 1.6 billion active users globally as of July 2019, almost one-fifth of the total world’s population. Thus, research about WhatsApp’s influence in general and especially its influence in education was relevant and significant. While there was much research involving WhatsApp and learning, it was not conclusive about the effects of WhatsApp on student learning. Specifically, research focusing on collaborative learning using WhatsApp was lacking, including research instruments for measuring collaboration on WhatsApp. Consequently, the paper’s research problem was the lack of research instruments for measuring collaboration on WhatsApp in relation to academic achievement. To address the research problem, the study followed the important initial and conceptual steps of the instrument development process to develop a research instrument to measure collaboration on WhatsApp in relation to academic achievement. The result of the paper was a developed instrument that provides researchers with a basis to measure the explanatory constructs involved in mobile collaborative learning (MCL) processes on WhatsApp and potentially other social media platforms. Therefore, the paper made an appropriately theoretical contribution, which was grounded in the scientific literature. The study facilitated positivistic research and epistemology for acquiring objective and precise scientific knowledge. Such deductive research promotes theory testing and development and presents educators and students with scientific evidence about learning with MCL applications such as WhatsApp from which both curriculum and learning design can be informed and benefited. In the age of connected mobility this is a necessity.School of Computin