Producción de semillas en el año forestal 1951-52 y consumo durante 1952 /. PDF Download
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Author:
Publisher:
ISBN:
Category :
Languages : es
Pages : 100
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Book Description
Author:
Publisher:
ISBN:
Category :
Languages : es
Pages : 100
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Book Description
Author: Servicio de Semillas Forestales
Publisher:
ISBN:
Category :
Languages : es
Pages : 0
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Author: Manuel Prats Zapirain
Publisher:
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Category :
Languages : es
Pages : 0
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Author: Instituto Forestal de Investigaciones y Experiencias Servicio de Semillas
Publisher:
ISBN:
Category :
Languages : es
Pages : 141
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Author: Instituto Forestal de Investigaciones y Experiencias
Publisher:
ISBN:
Category :
Languages : es
Pages : 110
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Author: Commission for Environmental Cooperation (Montréal, Québec). Secretariat
Publisher:
ISBN:
Category : Agriculture
Languages : en
Pages : 240
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Book Description
The North American Mosaic has four overarching features. First, it is, to the extent feasible, based on comparable information on the status and trends of major indicators of the state of the environment in Canada,Mexico, and the United States. Second, the report confirms that these three countries together make up an incredibly complex, dynamic, and interconnected ecosystem in which humans play a dominant and decisive role. Third, the report raises important and sometimes disquieting questions concerning the sustainability of some current trends. Finally, the report is a reminder that our economic, social, and physical well-being are utterly dependent on the life-sustaining services provided by nature. This report emphasizes the importance of developing mutually compatible economic, social, and environmental goals and policies across the three-country region.
Author: J. Esteban Hernández Bermejo
Publisher: Food & Agriculture Org.
ISBN: 9789251032176
Category : Business & Economics
Languages : en
Pages : 372
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Book Description
About neglected crops of the American continent. Published in collaboration with the Botanical Garden of Cord�ba (Spain) as part of the Etnobot�nica92 Programme (Andalusia, 1992)
Author: Thammineni Pullaiah
Publisher: John Wiley & Sons
ISBN: 1119607035
Category : Technology & Engineering
Languages : de
Pages : 1488
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Book Description
INVASIVE ALIEN SPECIES Invasive Alien Species: Observations and Issues from Around the World Volume 1: Issues and Invasions in Africa Invasive alien species are spreading into new ecosystems each year. The impacts caused by these invaders can be swift and devastating. The topic of invasive alien species is large, complex, and globally significant at various scales, exacerbated by the globalization of world economies and increased trade and commerce that has overcome natural barriers to species movement. Invasive alien species threaten global food supplies, water quality and availability, and energy production and delivery. With the added risks associated with global climate change, the global homogenization of plants, animals, and microbes is a major factor in the decline in ecosystem health and ecosystem services worldwide. To counter this trend, there is a critical need to unify governments, cultures, and programs to improve cross-boundary coordination to effectively address the wide range of invasive alien species threats to the environment, economies, and to plant and animal health; particularly human health. This 4-volume work is the first to compile a set of useful material for key topics, to provide a better understanding of the overall global threat of invasive alien species and the diverse array of problems faced around the world, and assemble material that includes potential replicable solutions to overcome these threats. The books also highlight the threat posed by invasive alien species in terms of a global ‘call to action’. Since invasive species know no boundaries, it is our hope that by compiling material from different scientific and social perspectives around the world, and sharing knowledge and examples of a diverse array of associated topics, we can advance global awareness and improve unified national responses to the threat posed by invasive alien species.
Author: Guillermo Floris Margadant S.
Publisher:
ISBN:
Category : Law
Languages : en
Pages : 408
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Author: Rafael Lira
Publisher: Springer
ISBN: 1461466695
Category : Science
Languages : en
Pages : 562
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Book Description
This book reviews the history, current state of knowledge, and different research approaches and techniques of studies on interactions between humans and plants in an important area of agriculture and ongoing plant domestication: Mesoamerica. Leading scholars and key research groups in Mexico discuss essential topics as well as contributions from international research groups that have conducted studies on ethnobotany and domestication of plants in the region. Such a convocation will produce an interesting discussion about future investigation and conservation of regional human cultures, genetic resources, and cultural and ecological processes that are critical for global sustainability.
