Libros de Ecología y Medio ambiente, página 32 de 277

Invasion ecology is the study of the causes and consequences of the introduction of organisms to areas outside their native range. Interest in this field has exploded in the past few decades. Explaining why and how organisms are moved around the world, how and why some become established and invade, and how best to manage invasive species in the face of global change are all crucial issues that interest biogeographers, ecologists and environmental managers in all parts of the world. This book brings together the insights of more than 50 authors to examine the origins, foundations, current dimensions and potential trajectories of invasion ecology. It revisits key tenets of the foundations of invasion ecology, including contributions of pioneering naturalists of the 19th century, including Charles Darwin and British ecologist Charles Elton, whose 1958 monograph on invasive species is widely acknowledged as having focussed scientific attention on biological invasions.

Muchas personas perciben la ciencia como algo inaccesible o ajeno. Sin embargo, vivimos en un mundo modelado de forma creciente por la ciencia y la tecnología, rodeados de objetos y productos que son fruto de la indagación científica. En nuestro día a día, necesitamos tomar decisiones que implican conocimientos que abarcan campos que van desde la interpretación del entorno y de los fenómenos naturales, hasta nociones elementales sobre nuestros cuerpos y la salud. Es por esto que una formación científica básica es fundamental.Conocer las teorías y leyes científicas, más allá de la satisfacción intelectual y de ofrecernos una visión más interesante del mundo y de nosotros mismos, es parte de un bagaje cultural imprescindible.La institución escolar no puede asumir toda la responsabilidad de la alfabetización científica, pero es innegable el carácter crucial e imprescindible de su intervención. De este modo, la obra Conocimiento del medio natural aspira a ser una herramienta que permita a los futuros maestros desarrollar un conocimiento teórico bien estructurado sobre los distintos temas relativos a las ciencias naturales. Así, en la unidad didáctica 1 se tratan los aspectos relacionados con la compresión de la actividad científica y los procesos de construcción del conocimiento científico. Las restantes unidades se estructuran en grandes bloques temáticos en los que se presta especial atención a los conceptos, principios, teorías, métodos y técnicas de investigación de la geología, la biología, la química y la física.En el recorrido de este manual a lo largo de las distintas disciplinas de las ciencias naturales no faltan las referencias a la historia de la ciencia. Estas reseñas históricas ayudarán a mostrar que la ciencia no es algo estático, sino que es un hecho cultural dinámico que evoluciona inmerso en la sociedad

Describe al detalle el vulnerable sistema ecológico de la Tierra; ¿Cómo se ha originado, como funciona, cuáles son las zonas más expuestas al deterioro, que puede hacer el hombre y, sobre todo, qué debería dejar de hacer? Útil, ameno e imprescindible.

Des de mitjan dècada del 2000 fins al 2013 Catalunya va viure un procés d’implantació d’energia eòlica que, en molts casos, va despertar l’oposició de part de la població dels territoris implicats pe

This book is unique in its treatment of biodiversity, which has come to be an emblem of what is worthy of protection and fostering in the natural world. It undertakes a comprehensive, detailed, and careful philosophical analysis of the many reasons that scientists, economists, philosophers, and others offer for why biodiversity is supposed to be such a central good of nature. Its conclusion is both surprising and disturbing: No reason for biodiversity''s good can be found that is not ill-conceived, logically indefensible, internally contradictory, or self-undermining.The profound failure to find the good of nature in its biodiversity is a springboard for rethinking what, exactly, makes the natural world so uniquely and robustly valuable. This leads to a novel suggestion that nature''s value might be located in a particular human-nature relationship, which anchors the appropriate fit of people in the world at large. Understanding nature''s value in this way has far-reaching consequences, which call into question common orthodoxies of conservation, restoration, and environmentalism generally.

This book constitutes a key reference on the use of algae in the biopharmaceuticals production field; providing an updated outlook on the achievements accomplished thus far and transmitting a prospective view for this biotechnological application. This book provides a detailed description of the technology as well as an updated outlook of the strides achieved thus far in the field of algae-based biopharmaceuticals. Algae constitute attractive expression hosts for the production of recombinant proteins with medical applications. Among the features that make them attractive candidates are: low cost, fast growth, wide biosynthetic capacity, and absence of human pathogens; which constitute substantial advantages with respect to bacterial and mammalian systems. First, the features of algae as convenient hosts for the production of BFs are analyzed in terms of production costs, biosynthetic capacity, and safety (Chapter 1). Second, the genetic engineering tools for algae-species are described. Nuclear and chloroplast-based expression approaches are analyzed and compared in terms of biosynthetic advantages, gene expression complexity, and DNA transfer approaches (Chapter 2). In the following sections, chapters 3 to 7, the state of the art on producing distinct types of BFs in algae species is presented. Although this book is mainly focused on BFs, considering that the production of compounds with health-promoting properties are achieved using genetically-engineered algae strains, chapter 8 deals with nutraceuticals. In the ninth chapter, the developments reported thus far are placed in perspective and challenges for the field are discussed. Critical future prospects comprise the following: optimizing large-scale production in bioreactors, implementing glycoengineering approaches, optimizing nuclear expression, exploring new approaches for oral delivery, and implementing regulatory frameworks to accomplish technology transfer and regulatory approval of algae-made BFs.

The genetic improvement of fish for aquaculture and related fisheries is a field of research that has seen immense advances in recent years. Yet there has been no book which provides an accessible overview of the subject until now. The book fills this gap in the literature. The contents include polyploidy, sex-reversal and breeding, gene mapping and commercial applications.

Vivir naturalmente

In surprising stories that take us into the worlds of hitmen insurance frauds and modern day slaves Jenny Kleeman explores the value of human life

Réalisé par des milliers d’experts de toutes nationalités et adopté par les gouvernements à l’ONU, le rapport du Giec fait consensus. Sylvestre Huet, journaliste spécialiste des questions climatiques