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Author : Jerzy Rzedowski
Publisher :
ISBN 13 :
Total Pages : 16 pages
Book Rating : 4.:/5 (799 download)
Download or read book Nota sobre el bosque mesófilo de montana en el Valle de México written by Jerzy Rzedowski and published by . This book was released on 1969 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lawrence S. Hamilton
Publisher : Springer Science & Business Media
ISBN 13 : 1461225000
Total Pages : 425 pages
Book Rating : 4.4/5 (612 download)
Download or read book Tropical Montane Cloud Forests written by Lawrence S. Hamilton and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 425 pages. Available in PDF, EPUB and Kindle. Book excerpt: Until relatively recently the valuable tropical montane cloud forests (hereaf ter usually referred to as TMCFs) of the world had scarcely come under the assaults experienced by the downslope montane and lowland forests. TMCFs are not hospitable environments for human occupation, and their remoteness (except in places near Andean high mountain settlements and in the Ethiopian Highlands) and difficult terrain have given them de facto protection. The ad jacent upper montane rain forests have indeed been under assault for timber, fuelwood, and for conversion to grazing and agriculture for many decades, even centuries in the Andes, but true cloud forest has only come under ex ploitation as these lower elevational resources have disappeared. They have also been "nibbled" at from above where there have been alpine grasslands under grazing pressure. Increasingly now, however, these cloud forest eco systems are being fragmented, reduced, and disturbed at an alarming rate. It is now becoming recognized that steps must be taken rapidly to increase our understanding of TMCF and to achieve their conservation, because: their water-capture function is extremely important to society; • their species endemism is high; they serve as refugia for endangered species being marginalized in these environments by increasingly transformed lower elevation ecosystems; they are relatively little studied; yet, their value to science is extremely high; they have low resilience to disturbance; vii viii Preface and many other reasons, which will be discussed subsequently in this publi cation.
Author : G.W. Heil
Publisher : Springer Science & Business Media
ISBN 13 : 9400709692
Total Pages : 226 pages
Book Rating : 4.4/5 (7 download)
Download or read book Ecology and Man in Mexico’s Central Volcanoes Area written by G.W. Heil and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 226 pages. Available in PDF, EPUB and Kindle. Book excerpt: The main activities of the economically active population around The Iztaccíhuatl and Popocatépetl volcanoes region lie in the primary sector (65- 90%). Of the people working in this sector, those dependent on agricultural or pastoral activities generally have an income significantly lower than the minimum wage in Mexico. Of the activities in the area, these agricultural, pastoral, and forestry activities probably have the most direct effect on the ecology of the volcanoes and its immediate surroundings. Traditional farmers, producing crops such as beans, pumpkins and cucumbers, generally work on small fields using traditional methods and animal traction. Modern farming, geared towards intensive production develops on larger sites making use of modern machinery, fertilizers, and pesticides. As the area under agriculture continues to increase every year, the attendant opening of large forested areas, soil modification, and ensuing erosion make it almost impossible for forest recovery. Extensive forestry in the region mainly concerns cutting and collecting wood, cutting Pinus-branches for torches or for utensils for open-fire cooking, collection of mushrooms, and hunting. Although these (often clandestine) activities seem to be small-scale, their adverse effects on the forest have been substantial. Weekend visitors from Mexico City heavily dominate recreation, with tourism concentrated near the roads leading to and inside the park. Lacking organization and facilities, most recreational activities have had significant environmental impact on the area In many countries, the decline of nature has occurred because of changes in land use.
Author : Tarin Toledo Aceves
Publisher :
ISBN 13 : 9786077607359
Total Pages : 196 pages
Book Rating : 4.6/5 (73 download)
Download or read book El bosque mesófilo de montaña en México written by Tarin Toledo Aceves and published by . This book was released on 2010 with total page 196 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : José Antonio Vázquez García
Publisher :
ISBN 13 :
Total Pages : 394 pages
Book Rating : 4.:/5 (89 download)
Download or read book Gradient Analysis of Neotropical Montane Forests written by José Antonio Vázquez García and published by . This book was released on 1995 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Mark E. Fenn
Publisher : Springer Science & Business Media
ISBN 13 : 038722520X
Total Pages : 412 pages
Book Rating : 4.3/5 (872 download)
Download or read book Urban Air Pollution and Forests written by Mark E. Fenn and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 412 pages. Available in PDF, EPUB and Kindle. Book excerpt: At present, roughly half of the world's population lives in urban centers. There are now more than 20 cities with a population of over 10 million inhabitants, compared to less than 5 about 50 years ago. This tendency toward urbanization is expected to continue, particularly in the developing world. A consequence of this growing trend is that millions of people are being exposed to harmful levels of urban air pollutants caused mainly by emissions from motor vehicles and from industrial and domestic activities involving the combustion of fossil fuels. The driving force for the design and implementation of emission control strate gies aimed at improving air quality has been the protection of the health of the population in urban centers. There are, however, other consequences of the pres ence of air pollutants besides the direct effect on human health. Reduced visibil ity, damage to monuments and buildings, and many other such consequences indirectly affect our quality of life. Another set of consequences involves damage to ecological systems. In fact, the nature of "photochemical smog" was first uncovered in the 1950s in connection with observations of its harmful effects on crops and plants in the vicinity of Los Angeles.
Author :
Publisher : UNAM
ISBN 13 : 9789703207015
Total Pages : 42 pages
Book Rating : 4.2/5 (7 download)
Download or read book Bosque mesofilo de montaña en el Molote written by and published by UNAM. This book was released on 2003 with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Exequiel Ezcurra
Publisher :
ISBN 13 :
Total Pages : 244 pages
Book Rating : 4.A/5 ( download)
Download or read book The Basin of Mexico written by Exequiel Ezcurra and published by . This book was released on 1999 with total page 244 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The book examines some of these questions in a historic perspective, arguing that the depletion of natural resources in the Basin of Mexico is not just a recent phenomenon."--BOOK JACKET.
Author : Oscar Sánchez
Publisher : Instituto Nacional de Ecología
ISBN 13 : 9688176109
Total Pages : 317 pages
Book Rating : 4.6/5 (881 download)
Download or read book Conservación de ecosistemas templados de montaña en México written by Oscar Sánchez and published by Instituto Nacional de Ecología. This book was released on 2003 with total page 317 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Silvia Aguilar Rodríguez
Publisher : UNAM
ISBN 13 : 9789683688286
Total Pages : 94 pages
Book Rating : 4.6/5 (882 download)
Download or read book Especies de un bosque mesófilo de montaña written by Silvia Aguilar Rodríguez and published by UNAM. This book was released on 2000 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vicente Valdez Tamez
Publisher :
ISBN 13 :
Total Pages : 8 pages
Book Rating : 4.:/5 (95 download)
Download or read book Distribución relictual del bosque mesófilo de montaña en el noreste de México written by Vicente Valdez Tamez and published by . This book was released on 2006 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Sociedad Mexicana de Historia Natural
Publisher :
ISBN 13 :
Total Pages : 462 pages
Book Rating : 4.3/5 (91 download)
Download or read book Revista de la Sociedad Mexicana de Historia Natural written by Sociedad Mexicana de Historia Natural and published by . This book was released on 1993 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Gerardo Sánchez Ramos
Publisher :
ISBN 13 :
Total Pages : 740 pages
Book Rating : 4.A/5 ( download)
Download or read book Historia natural de la Reserva de la Biosfera El Cielo, Tamaulipas, México written by Gerardo Sánchez Ramos and published by . This book was released on 2005 with total page 740 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Universidad Nacional Autónoma de México. Instituto de Biología
Publisher :
ISBN 13 :
Total Pages : 260 pages
Book Rating : 4.E/5 ( download)
Download or read book Anales del Instituto de Biología, Universidad Nacional Autónoma de México written by Universidad Nacional Autónoma de México. Instituto de Biología and published by . This book was released on 2004 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Rosa A. Pedraza- Pérez
Publisher :
ISBN 13 :
Total Pages : 13 pages
Book Rating : 4.:/5 (95 download)
Download or read book Condiciones de microhabitat para la germinación y establecimiento de dos especies de árboles del bosque mesófilo de montaña en México written by Rosa A. Pedraza- Pérez and published by . This book was released on 2000 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : K. K. Janardhanan
Publisher :
ISBN 13 :
Total Pages : 344 pages
Book Rating : 4.E/5 ( download)
Download or read book Tropical Mycology written by K. K. Janardhanan and published by . This book was released on 1997 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: Focusing on tropical mycology, this text covers topics such as tropical fungal biota, fungal biological diversity in the Tropics and micro-organisms in wasteland development.
Author :
Publisher :
ISBN 13 :
Total Pages : 596 pages
Book Rating : 4.:/5 (319 download)
Download or read book Folia Entomologica Mexicana written by and published by . This book was released on 1988 with total page 596 pages. Available in PDF, EPUB and Kindle. Book excerpt:
