Welcome to our book review site go-pdf.online!
You may have to Search all our reviewed books and magazines, click the sign up button below to create a free account.
The role of physical and biological soil crusts on the water balance in semiarid ecosystems
In arid and semiarid areas, the interplant spaces are usually covered by physical and biological soil crusts. These crusts, though representing an almost negligible portion of the soil profile, have a number of crucial roles. Soil crusts form the boundary between soil and atmosphere and therefore control gas, water and nutrient exchange into and through soils. Concretely, in the last decade, the study of biological soil crusts (BSCs) (complex communities of cyanobacteria, algae, fungi, lichens, mosses and other microorganisms in intimate association with soil particles) has drawn the attention of a growing number of researchers due to the key role they play in numerous processes in the ecosy...
Biological Soil Crusts: Spatio-temporal Development and Ecological Functions of Soil Surface Microbial Communities across Different Scales
Biological soil crusts (biocrusts) are widely distributed throughout the world, and cover approximately 12% of the terrestrial surface. Biocrusts are composed of cyanobacteria, algae, lichens, mosses, and a great diversity of other microorganisms, which bind soil particles together to form a layer of biological-soil matrix on the soil surface typically of several millimetres thickness. They are important sites of regional and global microbial diversity and perform multiple ecological functions (multifunctionality). During the evolution of terrestrial life on earth, biocrusts are regarded as the main colonising photosynthetic organisms before the advent of vascular vegetation. They not only r...
Identificación de cianobacterias y optimización de su cultivo para restaurar la biocostra en suelos semiáridos degradados
Los descubrimientos de esta tesis implican un avance en nuestro conocimiento de las comunidades de cianobacterias del sudeste español y un uso óptimo de cepas clave para restaurar suelos degradados mediante su inoculación. En primer lugar, se han identificado las especies de cianobacterias que colonizan las biocostras de la región más árida de Europa, aportando información valiosa con relación a su morfología y distribución. Esto es de interés para ampliar nuestra comprensión de las dinámicas de sucesión de las biocostras de estas zonas y sus efectos en las funciones del suelo. Además, se ha secuenciado el gen 16S del rRNA de las cepas aisladas, aumentando así la información...
XI Simposio de Investigación en Ciencias Experimentales
El Simposio de Investigación en Ciencias Experimentales, en su decimoprimera edición, es un evento ya consolidado en nuestra institución, la Facultad de Ciencias Experimentales. Nuestros estudiantes de máster, doctorado y posdoctorales, junto con investigadores externos a la UAL, lo consideran un evento idóneo en donde presentan sus más recientes investigaciones. En este libro aparecen los resúmenes de las 137 comunicaciones en modalidad póster presentadas por los participantes del Simposio y agrupadas de acuerdo a los cuatro doctorados de Ciencias de la Universidad de Almería, Biotecnología y Bioprocesos industriales, Ciencias Aplicadas y Medioambientales, Matemáticas y Química....
Luces y sombras
Otra novela de la autora de ¿Solo amigos? y Miscelánea. No te puedes perder la romántica e inesperada historia de Lucía y Álvaro. Lucía es enfermera, y empujada por su amiga íntima acepta un trabajo temporal en un centro de deportes de riesgo en la Sierra de Gredos. El lugar está gestionado por la familia Navas y cada uno de los cuatro hijos lleva una parte de las actividades. Nada más llegar allí, Lucía se topa con Álvaro, el mayor de los hermanos; un hombre desagradable, hosco y con un pasado turbulento que profesa una intensa animadversión contra las mujeres desde su separación matrimonial. Solo la hija de este, la pequeña Berta, logrará un acercamiento entre ambos, lo que...
Biological Soil Crusts: An Organizing Principle in Drylands
This volume summarizes our current understanding of biological soil crusts (biocrusts), which are omnipresent in dryland regions. Since they cover the soil surface, they influence, or even control, all surface exchange processes. Being one of the oldest terrestrial communities, biocrusts comprise a high diversity of cyanobacteria, algae, lichens and bryophytes together with uncounted bacteria, and fungi. The authors show that biocrusts are an integral part of dryland ecosystems, stabilizing soils, influencing plant germination and growth, and playing a key role in carbon, nitrogen and water cycling. Initial attempts have been made to use biocrusts as models in ecological theory. On the other hand, biocrusts are endangered by local disruptions and global change, highlighting the need for enhanced recovery methods. This book offers a comprehensive overview of the fascinating field of biocrust research, making it indispensable not only for scientists in this area, but also for land managers, policy makers, and anyone interested in the environment.
Historical Biogeography
Though biogeography may be simply defined--the study of the geographic distributions of organisms--the subject itself is extraordinarily complex, involving a range of scientific disciplines and a bewildering diversity of approaches. For convenience, biogeographers have recognized two research traditions: ecological biogeography and historical biogeography. This book makes sense of the profound revolution that historical biogeography has undergone in the last two decades, and of the resulting confusion over its foundations, basic concepts, methods, and relationships to other disciplines of comparative biology. Using case studies, the authors explain and illustrate the fundamentals and the most frequently used methods of this discipline. They show the reader how to tell when a historical biogeographic approach is called for, how to decide what kind of data to collect, how to choose the best method for the problem at hand, how to perform the necessary calculations, how to choose and apply a computer program, and how to interpret results.
