Download or read book Studies on the Enchytraeidae of North America written by Paul Smith Welch and published by . This book was released on 1913 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Studies on the Enchytr id of North America written by Paul Smith Welch and published by . This book was released on 1914 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Soil Biology written by A Burgers and published by Elsevier. This book was released on 2012-12-02 with total page 543 pages. Available in PDF, EPUB and Kindle. Book excerpt: Soil Biology brings together the microbiological, botanical, and zoological aspects of soil biology. Leading specialists provide critical reviews and assessments of their particular branches of soil biology, paying particular attention to functional aspects and biotic interrelationships whenever possible. This volume is organized into 17 chapters and begins with an overview of the soil system, emphasizing the system components including the mineral fraction, organic matter, soil moisture, and soil atmosphere. The next chapters focus on microorganisms present in the soil, along with their effects on plant roots. The book also discusses the soil algae, including how algae are affected by physical and chemical environments and their interrelations with other organisms. The remaining chapters look at other organisms that inhabit the soil, including Arthropoda, Collembola, and Mollusca, as well as the probable effects of inhibiting substances upon the biology of soil microorganisms. The final chapters explain the decomposition of organic matter in the soil and the effects of synthetic chemicals on soil microorganisms. This book is a valuable resource for soil biologists and research workers in fields such as botany, agriculture, zoology, and microbiology.
Download or read book Aquatic Oligochaetes written by Brenda M. Healy and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 288 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book contains papers on the biology of aquatic oligochaetes and some related groups. They cover a wide range of topics including phylogeny, taxonomy, geographic distribution, freshwater and marine ecology, population dynamics, histology and ultrastructure, physiology and behaviour. The wide scope is in line with recent trends in annelid research with less emphasis on pollution studies and faunistics and a renewed interest in experimental biology using new techniques.
Download or read book The Pollution Biology of Aquatic Oligochaetes written by Pilar Rodriguez and published by Springer Science & Business Media. This book was released on 2011-08-30 with total page 271 pages. Available in PDF, EPUB and Kindle. Book excerpt: In aquatic ecosystems, the oligochaetes are often a major component of the community. Their relevance in sediment quality assessment is largely related to their benthic and detritivorous life habit. In this book, we aim to present the state of the art of Pollution Biology using oligochaete worms in laboratory and field studies. Future research will require the combination of a variety of methodological approaches and the integration of the resulting information, avoiding fragmented and often conflicting visions of the relationships of the species with their environment. Current approaches to ecotoxicology and bioaccumulation using ecological risk assessment provide the opportunity to relate community studies with probability of effects. This book addresses three main themes: Ecological and Field Studies using the composition and structure of oligochaete communities, Toxicology and Laboratory Studies, and Bioaccumulation and Trophic Transfer Studies. Two appendices list values of toxicological parameters (LC50, EC50) and several bioaccumulation variables (bioaccumulation factors, biological half-life, toxicokinetic coefficients, and critical body residues) for different oligochaete species. Additional information is provided on Methodological Issues and on the Taxonomy of several oligochaete families, with information on the most recent taxonomic debates. Each chapter includes a critical view, based on the authors’ experience, of a number of current issues which have been raised in the literature.
Download or read book Handbook of Soil Science written by Malcolm E. Sumner and published by CRC Press. This book was released on 1999-08-31 with total page 2240 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Handbook of Soil Science provides a resource rich in data that gives professional soil scientists, agronomists, engineers, ecologists, biologists, naturalists, and their students a handy reference about the discipline of soil science. This handbook serves professionals seeking specific, factual reference information. Each subsection includes a description of concepts and theories; definitions; approaches; methodologies and procedures; tabular data; figures; and extensive references.
Download or read book Handbook of Soil Sciences Two Volume Set written by Pan Ming Huang and published by CRC Press. This book was released on 2018-10-03 with total page 2249 pages. Available in PDF, EPUB and Kindle. Book excerpt: An evolving, living organic/inorganic covering, soil is in dynamic equilibrium with the atmosphere above, the biosphere within, and the geology below. It acts as an anchor for roots, a purveyor of water and nutrients, a residence for a vast community of microorganisms and animals, a sanitizer of the environment, and a source of raw materials for co
Download or read book Fennoscandian Tundra Ecosystems written by Frans Emil Wielgolaski and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 349 pages. Available in PDF, EPUB and Kindle. Book excerpt: Animals are important components of any ecosystem and it is impossible to describe structure and funCtioning of the Fennoscandian tundra ecosystems without including this part of the system. However, the strong diversity between functionally highly different fauna groups makes it impossible to study all groups in great detail with the funds and expertise available in Fennoscandia. Relatively few productivity studies were carried out on animals in Fenno scandian tundra regions before the IBP projects started in 1969-1970. Within IBP, more fauna groups have been investigated in the Norwegian tundra project than in the other countries, due to better financial support. Even in Norway, however, only a limited number of invertebrate and vertebrate taxons is studied. General lack of information on the same animals in various parts of the Fennoscandian tundra makes it more difficult to present structural and functional comparisons of fauna for the whole region than in plants and microorganisms (see Part 1 of Fennoscandian Tundra Ecosystems). Brief surveys on faunal problems within the area are given in the introduction to the animal section, and general aspects are also discussed in the four first papers of the volume.
Download or read book Records of the Indian Museum written by and published by . This book was released on 1912 with total page 732 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Fundamentals of Soil Ecology written by David C. Coleman and published by Academic Press. This book was released on 2017-11-20 with total page 379 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fundamentals of Soil Ecology, 3rd Edition, offers a holistic approach to soil biology and ecosystem function, providing students and ecosystem researchers with a greater understanding of the central roles that soils play in ecosystem development and function. The text emphasizes the increasing importance of soils as the organizing center for all terrestrial ecosystems and provides an overview of theory and practice in soil ecology, both from an ecosystem and evolutionary biology point of view. This new edition is fully updated, including an expanded treatment of microbial ecology and new sections on advances in molecular techniques and climate change research. These updates make this edition an essential resource for researchers and students in soil ecology and microbiology. Includes extensive tables and diagrams in full color to enhance concepts Combines theoretical and practical approaches to understanding and applying soil ecology Outlines suggested laboratory and field methods
Download or read book Records of the Indian Museum written by Indian Museum and published by . This book was released on 1912 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt: A journal of Indian zoology.
Download or read book The Enchytraeidae written by C. Overgaard Nielsen and published by . This book was released on 1959 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Monograph of the Order of Oligochaeta written by Frank Evers Beddard and published by . This book was released on 1895 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On Melanenchytraeus Solifugus written by Carlo Emery and published by . This book was released on 1900 with total page 16 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Agricultural Ecology and Environment written by B.R. Stinner and published by Elsevier. This book was released on 2012-12-02 with total page 645 pages. Available in PDF, EPUB and Kindle. Book excerpt: The increased use of chemical fertilizers and pesticides in crop production has adversely affected both the environment and the agricultural economy. Not only has it led to environmental pollution, but also the increasing costs of chemical inputs and the low prices received for agricultural products have contributed to economic unprofitability and instability.The International Symposium on Agricultural Ecology and Environment was organised in order to discuss ways of achieving the goals of economically and environmentally sustainable agriculture. It is apparent that a truly multidisciplinary effort is required and for this reason the meeting was attended by authors from many different disciplines and geographical locations. Although their papers reflect a wide diversity of agroecosystem types and examples, several common themes emerge: the increased importance of biotic control of ecosystem processes in lower input systems; the key role of soil organic matter in stabilizing nutrient cycling; the importance of agricultural landscape diversity and complexity; the importance of studying ecological processes in natural and agricultural ecosystems; the critical need to integrate socio-economic and ecological approaches.
Download or read book Aquatic Oligochaete Biology written by Ralph O. Brinkhurst and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 522 pages. Available in PDF, EPUB and Kindle. Book excerpt: After some conversations with Professor Dr. H. Caspers and other participants at the triennial congress of the International Association of Theoretical and Applied Limnology (S. I. L. ) held in Copenhagen, Denmark (1977), the senior editor approached the international delegates at the business meeting for approval of the concept of holding the First International Symposium on Aquatic Oligochaete Biology at Sidney (near Victoria) British Columbia on May 1-4, 1979. The S. I. L. agreed to sponsor such a meeting, and this sponsorship in turn led to the provision of space and technical facilities at the Institute of Ocean Sciences Patricia Bay, the Pacific Regional headquarters of the Ocean and Aquatic Sciences component of the federal Fisheri~s and Oceans Department. The National Research Council of Canada provided travel support for a number of non-Canadian participants. Invitations were sent to as many active workers in the field as the senior editor could name, and in addition two representatives of closely allied fields were invited - Dr. V. Standen who works with closely related but terrestrial species, and Dr. J. Grassle who works with polychaetes but especially with Capitella capitata which is much like an oligochaete in some aspects of its biolog- so much so that the senior editor in his salad days succumbed to some ill-founded advice and described Capitella as a new marine tubificid! The addition of these "outside" influences prevented the group from making a number of unfounded assumptions during discussions, and provided valuable cross-linkages.
Download or read book Aquatic Oligochaete Biology written by J.L. Kaster and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 247 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of the 4th International Symposium on Aquatic Oligochaete Biology
