Apropiarse del desierto : Agricultura globalizada y dinámicas socioambientales en las costa peruana. El caso de los oasis de Virú e Ica-Villacuri / Anaïs Marshall

• Record Nr.: UNINA9910510400303321
• Autore: Marshall Anaïs
• Pubbl/distr/stampa: Lima, : Institut français d’études andines, 2021
• ISBN: 979-1-03-656276-1
• Descrizione fisica: 1 online resource (417 p.)
• Soggetti: Geography; agriculture; Pérou; environnement; mondialisation; géographie; sol; commerce extérieur; Libéralisme; politique gouvernementale; agro-industrie; siècle 20; siècle 21; agricultura; Perú; medio ambiente; globalización; geografía; comercio exterior; liberalismo; política gubernamental; agroindustria; siglo 20; siglo 21
• Lingua di pubblicazione: Spagnolo
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Sommario/riassunto: Desde los años 1990, la agricultura peruana se caracteriza por una política de liberalización de mercados económicos y liberalización del mercado de tierra. Uno de los más importantes efectos es la implantación de empresas agro-industriales en el territorio nacional. Así, en el desierto costero, se observa la constante extensión de los perímetros regados en zonas de intervalles y una profunda transformación del espacio rural ¿En qué condiciones las empresas agro-industriales se han instalado? ¿Qué tipo de relaciones instauran con los otros actores del medio rural local? ¿Cuáles son los efectos sociales y ambientales de estas instalaciones? Con el caso de Virú e Ica-Villacuri, la autora evoca los desafíos que enfrenta la agricultura globalizada en un Perú en constantes mutaciones y más ampliamente en un país «del Sur».

The evolution and emergence of RNA viruses / / Edward C. Holmes

• Record Nr.: UNINA9910814101303321
• Autore: Holmes Edward C.
• Pubbl/distr/stampa: Oxford, England : , : Oxford University Press, , 2009; 2009
• ISBN: 0-19-154941-X
• Descrizione fisica: 1 online resource (267 p.)
• Collana: Oxford Series in Ecology and Evolution
• Disciplina: 579.25
• Soggetti: RNA viruses; Viruses - Evolution; Viral genetics; Virus diseases
• Lingua di pubblicazione: Inglese
• Formato: Materiale a stampa
• Livello bibliografico: Monografia
• Note generali: Description based upon print version of record.
• Nota di bibliografia: Includes bibliographical references and index.
• Nota di contenuto: Contents; 1 Introduction; 1.1 Why study RNA virus evolution?; 1.1.1 Ways to study viral evolution; 1.1.2 The scope of this book; 1.2 RNA viruses and evolutionary biology; 1.2.1 The RNA virus world; 1.3 The ; basics of viral biology; 1.3.1 A cursory history of virology; 1.3.2 Virology 101; 1.3.3 Exploring the virosphere; 2 The origins of RNA viruses; 2.1 Introduction; 2.1.1 The perils of deep viral phylogeny; 2.2 Theories for the origin of RNA viruses; 2.2.1 The regressive origin theory; 2.2.2 RNA viruses as escaped genes; 2.2.3 RNA viruses and the RNA world; 2.2.4 Eigen's paradox; 2.2.5 The taxonomic distribution of RNA viruses2.2.6 Conserved protein structures; 2.3 Deep phylogenetic relationships among RNA viruses; 2.3.1 The 'higher-order' relationships of RNA viruses; 2.3.2 Phylogenies based on genome organization; 2.3.3 Phylogenies based on protein structure; 2.4 RNA viruses and the evolution of the genetic code; 3 The mechanisms of RNA virus evolution; 3.1 The evolutionary dynamics of RNA viruses; 3.1.1 Mutation rates in RNA viruses and their determinants; 3.1.2 A comparison of substitution rates in viruses; 3.1.3 Differences in viral generation time; 3.1.4 Slowly evolving RNA viruses?3.1.5 Rapidly evolving ssDNA viruses; 3.1.6 What sets the rate of RNA virus evolution?; 3.1.7 Trade-offs and the evolution of mutation rates; 3.1.8 Mutation rates and mutational loads; 3.1.9 Are RNA viruses trapped by high mutation rates?; 3.2 Recombination and reassortment in RNA virus evolution; 3.2.1 Recombination frequency in RNA viruses; 3.2.2 Detecting recombination in RNA viruses; 3.2.3 What determines the rate of recombination in RNA viruses?; 3.2.4 Recombination and deleterious mutation; 3.3 Natural selection, genetic drift, and the genetics of adaptation3.3.1 Effective population sizes in viral evolution; 3.3.2 Transmission bottlenecks; 3.3.3 The dynamics of allele fixation: estimating selection coefficients; 3.3.4 The importance of hitch-hiking; 3.3.5 Patterns of synonymous and nonsynonymous evolution; 3.3.6 Natural selection and transmission mode; 3.3.7 Escape from intrinsic immunity; 3.3.8 Strictly neutral evolution in RNA viruses?; 3.3.9 Determinants of codon bias (and nucleotide composition) in RNA viruses; 3.4 Deleterious mutation and RNA virus evolution; 3.4.1 Deleterious mutation and intra-host genetic diversity3.4.2 The importance of defective interfering particles and complementation; 3.4.3 Complementation may be commonplace in RNA viruses; 3.5 Epistasis in RNA virus evolution; 3.5.1 Epistasis and robustness; 3.5.2 The importance of RNA secondary structure; 3.5.3 Convergence and pleiotropy; 3.6 The importance of intra-host viral diversity; 4 The RNA virus quasispecies; 4.1 What is a quasispecies?; 4.2 The great quasispecies debate; 4.2.1 What's in a name: quasispecies or polymorphism?; 4.2.2 Is quasispecies theory different from 'classical' population genetics?
• Sommario/riassunto: While the study of viral evolution has developed rapidly in the last 30 years, little attention has been directed toward linking the mechanisms of viral evolution to the epidemiological outcomes of these processes. This book intends to fill this gap by considering the patterns and processes of viral evolution at all its spatial and temporal scales.