Dinámica Geomorfológica de Humedales, Diversidad Ambiental PDF Download

Author: Miguel Angel Giraut
Publisher: Ewe Editorial Acad MIA Espa Ola
ISBN: 9783659026683
Category :
Languages : es
Pages : 300

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Book Description
El termino humedal es una palabra de uso reciente en el mundo de la ciencia y de la conservacion. Los trabajos publicados por ecologos y biogeografos demuestran que estos paisajes naturales poseen mayor diversidad ambiental y genetica de lo que se pensaba. La geomorfologia de los humedales, constituye un desafio por corresponder a parajes de dificil acceso, con cubierta vegetal de importancia y de escasa expresion topografica, aspectos que dificultan su interpretacion y cuyos antecedentes brindan caracteristicas del ambiente acuatico, la preservacion y legislacion. El aporte de las ciencias geologicas, sumados al analisis digital de imagenes de satelite e integracion de informacion en un Sistema de Informacion Geografica, ha permitido enriquecer, el conocimiento y funcionamiento de estas areas practicamente virgenes. La presentacion se estructura en diez capitulos y un Anexo fotografico. Complementariamente, se incluye al inicio de los capitulos, frases, comentarios y pensamientos que de alguna forma, ayudan - cuando no interpretan -, las ideas desarrolladas y que desde la simpleza o grandeza, descubren los aspectos que a continuacion se mencionan."

Author: Beltrán Vargas, Julio Eduardo
Publisher: Editorial Universidad Distrital Francisco José de Caldas. Editorial UD
ISBN: 9587875702
Category : Science
Languages : es
Pages : 209

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Book Description
Los humedales proveen variados hábitats a numerosas especies de flora y fauna, previenen la inundación, protegen las costas, recargan acuíferos subterráneos y tienen importancia económica en cuanto a producción alimentaria y energética. Son eslabones de los sistemas migratorios de aves, acogen una gran variedad de especies vegetales y animales, preservan el capital genético, purifican el agua y absorben carbono. Actúan como reguladores del ciclo ecológico entre los cursos fluviales y los acuíferos; el humedal es como una esponja que retiene el exceso de agua durante periodos lluviosos amortiguando el efecto de la erosión (Chaparro, 2003; Rangel, 2003). Desafortunadamente muchos humedales han sido convertidos en campos de cultivo, alterados por construcción de puertos, o rellenados para construir zonas residenciales, industriales o comerciales (Prescott y Tsanis, 1997). Como los ríos y los lagos, los humedales reciben agua y minerales de la lluvia, del agua subterránea y de la escorrentía superficial (Johnston, 1993; Mann y Wetzel, 2000). Los humedales reciben flujos considerables desde el exterior y tienden a retener lo que entra más que a exportar, debido a su morfometría, por esto se dice que su función ecológica es actuar como sumideros de materiales orgánicos e inorgánicos que llegan con las corrientes y que tienden a sedimentarse. Así, la materia orgánica se acumula y produce un incremento en la producción neta que genera un exceso de material vegetal que no es consumido por herbívoros y por lo tanto se convierte en detritus en el fondo del humedal. Aunque la eutrofización es algo natural, los aportes de materia orgánica de las actividades humanas hacen que este proceso se acelere convirtiéndola en uno de los problemas ambientales más generalizados (Reinhardt et al., 2005; Gurkan et al., 2006).

Author: Martin R. Perrow
Publisher: Cambridge University Press
ISBN: 9780521791281
Category : Nature
Languages : en
Pages : 460

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Book Description
This two-volume handbook is a comprehensive account of the rapidly emerging and vibrant science of the ecological restoration of habitats and species. Ecological restoration aims to achieve complete structural, functional, self-maintaining biological integrity following disturbance. In practice, any theoretical model is modified by a number of economic, social, and ecological constraints. Consequently, material that might be considered as rehabilitation, enhancement, re-construction, or re-creation is also included. Principles of Restoration defines the underlying principles of restoration ecology in relation to manipulations and management of the biological, geophysical, and chemical framework.

Author: William R. Jordan
Publisher: Cambridge University Press
ISBN: 9780521337281
Category : Nature
Languages : en
Pages : 360

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Book Description
Although interest in ecological restoration has grown rapidly in recent years, restoration efforts have been highly empirical and have therefore been of only marginal interest to theoretical ecologists concerned with the structure and dynamics of communities. The ability to reassemble a community or ecosystem and to make it function properly actually represents a critical test of ecological understanding in the most fundamental sense. It is this idea of restoration as a technique - and even a paradigm - for ecological studies, leading in turn to improved restoration methods, that is the subject of this book.

Author: Maarten Kappelle
Publisher: University of Chicago Press
ISBN: 022627893X
Category : History
Languages : en
Pages : 798

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Book Description
In 1502, Christopher Columbus named Costa Rica, and while gold and silver never materialized to justify the moniker of rich coast in purely economic terms, scientists and ecotravelers alike have long appreciated its incredible wealth. Wealth in Costa Rica is best measured by its biodiversityhome to a dizzying number of plants and animals, many endemic, it s a country that has long encouraged and welcomed researchers from the world over, and is exemplary in the creation and commitment to indigenous conservation and management programs. Costa Rica is considered to have the best preserved natural resources in Latin America. Approximately nine percent (about 1,000,000 acres) of Costa Rica has been protected in 15 national parks, and a comparable amount of land is protected as wildlife refuges, forest reserves or Indian reservations. This long-awaited synthesis of Costa Rican ecosystems is an authoritative presentation of the paleoecology, biogeography, structure, conservation, and sustainable use of Costa Rica s ecosystems. It systematically covers the entire range of Costa Rica s natural and managed, terrestrial, freshwater and marine ecosystems, including its island systems (Cocos Islands), the Atlantic and Pacific oceans and shores (coasts, coral reefs, mangrove forests), its lowlands (dry, season and wet forests), its highlands (the northern volcanoes and southern Talamanca s), and its estuaries, rivers, lakes, swamps and bogs. The volume s integrated, comprehensive format will be welcomed by tropical and temperate biologists alike, by biogeographers, plant and animal ecologists, marine biologists, conservation biologists, foresters, policy-makers and all scientists, natural history specialists and all with an interest in Costa Rica s ecosystems."

Author: Ralph W. Tiner
Publisher: CRC Press
ISBN: 9781420048612
Category : Technology & Engineering
Languages : en
Pages : 426

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Book Description
Understand the current concept of wetland and methods for identifying, describing, classifying, and delineating wetlands in the United States with Wetland Indicators - capturing the current state of science's role in wetland recognition and mapping. Environmental scientists and others involved with wetland regulations can strengthen their knowledge about wetlands, and the use of various indicators, to support their decisions on difficult wetland determinations. Professor Tiner primarily focuses on plants, soils, and other signs of wetland hydrology in the soil, or on the surface of wetlands in his discussion of Wetland Indicators. Practicing - and aspiring - wetland delineators alike will appreciate Wetland Indicators' critical insight into the development and significance of hydrophytic vegetation, hydric soils, and other factors. Features Shows 55 color plates, documenting wetland indicators throughout the nation - with more than 34 soil plates and aerial photos Illustrates other wetland properties with more than 50 figures Provides over 60 tables, including extensive tables of U.S. wetland plant communities and examples for determining hydrophytic vegetation Contents Wetland Definitions Wetland Concepts for Identification and Delineation Plant Indicators of Wetlands and Their Characteristics Vegetation Sampling and Analysis for Wetlands Soil Indicators of Wetlands Wetland Identification and Boundary Delineation Methods Problem Wetlands and Field Situations for Delineation Wetland Classification Wetlands of the United States: An Introduction, With Emphasis on Their Plant Communities Wetland Mapping and Photointerpretation

Author: Wolfgang J. Junk
Publisher: Springer Science & Business Media
ISBN: 3662034166
Category : Science
Languages : en
Pages : 531

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Book Description
Floodplains are ecosystems which are driven by periodic inundation and oscillation between terrestrial and aquatic phases. An understanding of such pulsing systems is only possible by studying both phases and linking the results into an integrated overview. This book presents the results of a 15-year study of the structure and function of one of the largest tropical floodplains, the Amazon River floodplain. It covers qualitative aspects, e.g., adaptations of aquatic and terrestrial organisms to the flood pulse as well as quantitative aspects, e.g., studies of biomass, primary production, decomposition, and nutrient cycles. The authors interpret their findings and the most important data from other studies under an integrating scientific concept, the Flood Pulse Concept.

Author: Food and Agriculture Organization of the United Nations. Forest Resources Development Branch
Publisher: Food & Agriculture Org.
ISBN: 9789251034453
Category : Business & Economics
Languages : en
Pages : 352

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Book Description

Author: Francisco A. Comín
Publisher: Cambridge University Press
ISBN: 0521877113
Category : Nature
Languages : en
Pages : 335

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Book Description
This book combines theory and practice plus ideas and case studies on ecological restoration from local to global scales. Includes why and how to restore coastal zones, forests and wetlands and their economic and social interests. Practitioners, professionals, researchers and students will find useful ideas and tools for their everyday work in this book.

Author: Elizabeth Mazzoni
Publisher:
ISBN: 9783319719221
Category : Electronic books
Languages : en
Pages :

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Book Description
This book presents the most relevant basaltic plateau exposures in the provinces of Neuquén (northern Patagonia) and Santa Cruz (southern Patagonia), and analyzes their geomorphological and morphometric characteristics. The existence of wetland ecosystems near the volcanic plateaus is quantified, thus providing indexes that describe the quantitative relationships between these landscape features. These indexes also make it possible to estimate the development of these wetlands in non-surveyed areas, opening the door for studying remote, isolated areas by means of remote sensing images. In turn, the book proposes a numerical classification system for this type of landscape that summarizes the main geomorphological and hydrological characteristics.