Xem 1-20 trên 80 kết quả Plant ecology
  • Forests play a major role in global carbon (C) cycle, and the carbon density (CD) could reflect its ecological function of C sequestration. Study on the CD of different forest types on a community scale is crucial to characterize in depth the capacity of forest C sequestration.

    pdf358p phoebe75 01-02-2013 30 12   Download

  • Diversity of plant form and life history and their distribution onto different habitats suggest that plant functions should underlie this diversity, providing tools to successfully and differentially thrive in every habitat. The knowledge of these functions is then the key to understand community and ecosystem structure and functioning, something that attracted the interest and effort of many plant ecologists trying to establish patterns of adaptive specialization in plants.

    pdf748p phoebe75 01-02-2013 41 16   Download

  • This textbook covers Plant Ecology from the molecular to the global level.

    pdf0p phoebe75 01-02-2013 34 14   Download

  • The science of ecology and the practice of management are critical to our understanding of the Earth’s ecosystems and our efforts to conserve them. This book attempts to bridge the gap between ecology and natural resource management and, in particular, focuses on the discipline of plant ecology as a foundation for vegetation and wildlife management. It describes how concepts and approaches used by ecologists to study communities and ecosystems can be applied to their management. Guy R.

    pdf181p huetay_1 28-02-2013 29 12   Download

  • convenience. He for his part is then prepared to adapt to the needs of the biogas plant. Biogas plants are appropriate to the technical abilities and economic capacity of Third World farmers. Biogas technology is extremely appropriate to the ecological and economic demands of the future. Biogas technology is progressive. However, a biogas plant seldom meets the owner's need for status and recognition. Biogas technology has a poor image ("Biogas plants are built by dreamers for poor people". If you do not want to seem one of the poor, you do not buy a biogas plant.

    pdf66p lulanphuong 22-03-2012 88 44   Download

  • Drawing on the collective expertise of world authorities, Ecological Basis of Agroforestry employs extensive use of tables and figures to demonstrate how ecologically sustainable agroecosystems can meet the challenges of enhancing crop productivity, soil fertility, and environmental sustainability. Divided into four sections, this comprehensive volume begins with a study of tree-crop interaction in tropical and temperate climates.

    pdf400p daungocduc 11-04-2012 93 40   Download

  • In contrast to other animals, humans sense their world chiefly by vision, sound, and touch. We have, in general, a remarkably undeveloped sense of smell, and so it is not surprising that we fail to appreciate how important chemical signals are in the lives of other organisms. Chemical signals and cues serve insects in numerous ways, including sexual advertisement, social organization, defense, and finding and recognizing resources.

    pdf353p khanhbvtv 10-07-2012 81 38   Download

  • Whereas the mechanical performance of plant organs has often been discussed in evolutionary biology [1,2], tree biomechanics has rarely been considered in the context of functional ecology. Functional ecology aims at understanding the functions of organisms that result in fluxes of biomass or energy within an ecosystem, e.g., a forest. This discipline studies the processes controlling these fluxes, at either the scale of an individual, community, or ecosystem, with their response to natural or anthropic environmental variations....

    pdf313p 951628473 07-05-2012 56 22   Download

  • First and foremost, it is a book geared towards fish aquarists. And it is a heavy read with alot of chemistry and biology. To sum up the book: the author wrote the book to bring it to the reader's attention that an aquarium is a sort of (semi)closed ecosystem, and it needs to be thought of as this in order to be successful in raising the plants and animals inside the aquarium. she then describes the biological principles behind her methods of setting up and maintaining "low-tech" planted aquariums (as opposed to hi-tech, like those of takashi amano). She uses...

    pdf205p phoebe75 01-02-2013 28 17   Download

  • When I was asked by Timber Press to write a new book on resins, including amber—Howes’s 1949 Vegetable Gums and Resins was the most recent such effort—the breadth of interdisciplinary coverage seemed too ambitious for an individual person. There have been so many advances in resin research in the past half century, including the development of new fields of research such as chemical ecology, and the exploration of other interesting facets about resins made possible by new chemical, molecular, and microscopic techniques.

    pdf586p phoebe75 01-02-2013 24 17   Download

  • Bacteria that associate with plants are diverse in their ability to affect plant health, their genotypic and phenotypic characteristics, and their phylogeny. These bacteria are typically members of complex microbial communities, with only a few establishing pure clonal populations within a plant.

    pdf716p quang93l 30-03-2014 52 16   Download

  • (BQ) Ebook Biochemistry of Plant Secondary Metabolism is designed for use by advanced students, researchers and profes-sionals in plant biochemistry, physiology, molecular biology, genetics, agricul-ture and pharmacy working in the academic and industrial sectors, including the pesticide and pharmaceutical industries.

    pdf481p ductienthaiha 14-03-2015 14 9   Download

  • Our goal in writing this book was to describe why weeds occur where they do. We have made no attempt to discuss their management and control: there are excellent texts available for that. Rather, we think that students should understand how and why weeds fit into their environment. This text presents ecological principles as they relate to weeds. Ecology is central to our understanding of how and why weeds invade and yet there are few books that make this connection. That is the niche we hope to fill.

    pdf312p phoebe75 01-02-2013 23 7   Download

  • The scope of this book is to demonstrate that we do have an ecosystem theory that can be used to describe ecosystem structure and function. It was previously shown in the book, Integration of Ecosystem Theories: A Pattern (3rd edition, 2002), that the various contributions to systems ecology are consistent and together form a pattern of ecological processes. My book with Yuri Svirezhev, Toward a Thermodynamic Theory of Ecosystems (2004), presented the thermodynamics of this pattern in a mathematical language....

    pdf289p phoebe75 01-02-2013 25 7   Download

  • This book, now in its third edition, began almost 25 years ago when Weed Ecology: Implications for Vegetation Management was published in 1984. That text concentrated on the need for farmers, foresters, rangeland managers, and the researchers who advised them to understand better the biology of weeds and the role people play in creating and maintaining weeds in agriculture and other production systems. We were assisted in that first effort by the writings of many early scientists, such as J. L. Harper, H. G. Baker, and E. J.

    pdf475p camchuong_1 11-12-2012 34 6   Download

  • The timing of the publication of this book couldn’t be better as we celebrate the 50th anniversary of Charles Elton’s seminal book, The Ecology of Invasions by Animals and Plants. Since this influential book was published in 1958, the study of bioinvasions has developed exponentially, alongside the exponential growth in the magnitude of the invasion problem itself. Today, bioinvasion, a highly complex ecological process and environmental concern, has become a specific branch in ecology and environmental studies, with many disciplines developing within it....

    pdf635p phoebe75 01-02-2013 15 6   Download

  • Large lakes are important because of their size and ecological distinctiveness, as well as their economic and cultural value. Optimal management of them requires a proper understanding of anthropogenic impacts, both on the lake ecosystems, as such and on the services they provide for society. The specific structural and functional properties of large lakes, e.g. morphology, hydrography, biogeochemical cycles, and food-web structure, are all directly related to their size.

    pdf0p phoebe75 01-02-2013 19 5   Download

  • There are 4 million miles of roads in the United States. One hundred years ago, roads were primarily unpaved and had half the number of miles of the present U.S. road system. As the system grew, roads became wider and more complex structurally to provide for more and heavier traffic. New construction technology and greater structural stability were needed to improve the road system. All phases of road development—from construction and use by vehicles to maintenance—affect physical and chemical soil conditions, water flow, and air and water quality.

    pdf44p camchuong_1 11-12-2012 15 3   Download

  • Question 1: What is human ecology? Please, draw a diagram showing relationship between Ecosystem and Social system? What are benefits for Economics to study Human Ecology? - Ecology is the science of relationships between living organisms and their environment. - Human ecology is about relationships between people and their environment. In human ecology the environment is perceived as an ecosystem - An ecosystem is everything in a specified area - the air, soil, water, living organisms and physical structures, including everything built by humans.

    doc19p dothuymo0201 03-10-2012 39 2   Download

  • This is a book about the Cerrado Biome, a major Brazilian savanna-like ecosystem for which no such summary exists. Biologists outside Brazil know little about the cerrados, despite the fact that the biome covers approximately 22% of the country’s surface area, or 2 million km2. Even though much of the attention of conservationists has focused on rainforests such as the Amazon and Atlantic forests, the cerrados are currently one the most threatened biomes of South America due to the rapid expansion of agriculture.

    pdf409p camchuong_1 11-12-2012 17 2   Download

Đồng bộ tài khoản