Download or read book Bibliography of Agriculture written by and published by . This book was released on 1993 with total page 1688 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Bibliography of Agriculture with Subject Index written by and published by . This book was released on 1984 with total page 1492 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Riparian Areas written by National Research Council and published by National Academies Press. This book was released on 2002-10-10 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Clean Water Act (CWA) requires that wetlands be protected from degradation because of their important ecological functions including maintenance of high water quality and provision of fish and wildlife habitat. However, this protection generally does not encompass riparian areasâ€"the lands bordering rivers and lakesâ€"even though they often provide the same functions as wetlands. Growing recognition of the similarities in wetland and riparian area functioning and the differences in their legal protection led the NRC in 1999 to undertake a study of riparian areas, which has culminated in Riparian Areas: Functioning and Strategies for Management. The report is intended to heighten awareness of riparian areas commensurate with their ecological and societal values. The primary conclusion is that, because riparian areas perform a disproportionate number of biological and physical functions on a unit area basis, restoration of riparian functions along America's waterbodies should be a national goal.

Download or read book Historic Heritage of High country Pastoralism written by Roberta McIntyre and published by . This book was released on 2007-01-01 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The New Zealand Official Year book written by New Zealand. Department of Statistics and published by . This book was released on 1923 with total page 820 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Guide to the Economic Evaluation of Irrigation Projects written by Hellmuth Bergmann and published by Organisation for Economic Co-operation and Development ; [Washington, D.C. : sold by OECD Publications Center]. This book was released on 1976 with total page 276 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Pallid Sturgeon written by and published by . This book was released on 1994 with total page 2 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Australian and New Zealand Guidelines for Fresh and Marine Water Quality written by and published by . This book was released on 2000 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Assessment of Environmental Flow Requirements of Indian River Basins written by V. Y. Smakhtin and published by IWMI. This book was released on 2006-01-01 with total page 46 pages. Available in PDF, EPUB and Kindle. Book excerpt: "CGIAR Challenge Program on Water & Food; Future Harvest"--Cover.

Download or read book Cage Aquaculture written by Food and Agriculture Organization of the United Nations and published by Food & Agriculture Org.. This book was released on 2007 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt: This document contains nine FAO commissioned papers on cage aquaculture including a global overview, one country review for China, and seven regional reviews for Asia (excluding China), northern Europe, the Mediterranean, sub-Saharan Africa, Latin America and the Caribbean, northern America and Oceania. The content of the papers is based on the broad experience and sound knowledge of the authors with advice and help received from many experts and reviewers around the globe. The papers were presented to a distinguished audience of some 300 participants from over 25 countries during the FAO Special Session on Cage Aquaculture - Regional Reviews and Global Overview at the Asian Fisheries Society (AFS) Second International Symposium on Cage Aquaculture in Asia (CAA2), held in Hangzhou, China, from 3 to 8 July 2006.

Download or read book Braided River Ecology written by Duncan Peter Gray and published by Science & Technical Publishing Department of Conservation. This book was released on 2007 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: A braided river is one that, over some part of its length, flows in multiple, mobile channels across a gravel floodplain. In New Zealand, many braided rivers remain in a relatively unmodified condition, but increasing demands for hydro-electricity generation, irrigation, gravel extraction and flood protection works are placing pressure on these systems. However, apart from a limited number of studies on the ecology of individual species or reaches, there has been little coordinated ecological research to assess the overall values and function of braided river ecosystems in New Zealand. This review summarises the international and New Zealand literature on braided rivers, with particular emphasis on benthic invertebrate ecology. Braided rivers typically experience short-term channel migration within the active bed and greater lateral channel migration across the entire floodplain in the longer term. Channel migration occurs because steep headwater tributaries supply highly variable discharges and mobile erodable substrates to the mainstem. Braided rivers typically possess extended floodplains, which may contain a mosaic of floodplain habitats ranging from highly unstable main-stem channels to stable spring complexes. Main channel aquatic invertebrate communities are frequently low in diversity and dominated by the leptophlebiid mayfly Deleatidium spp., but also chironomids and elmid beetles. In contrast, floodplain springs can have highly diverse communities rich in amphipods, mayflies, caddis, snails and chironomids. Groundwater and floodplain pond habitats also occur frequently and can contain several specialist taxa. Braided rivers and their floodplains are spatially complex, temporally dynamic habitats with high landscape- and reach-scale biodiversity values. The challenge facing managers is to protect this biodiversity within the context of increasing human demands on the rivers. This report highlights the particular threats and management issues associated with braided rivers in New Zealand and identifies areas where future research is required.

Download or read book New Zealand Yearbook written by New Zealand. Statistics New Zealand and published by . This book was released on 1893 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Groundwaters of New Zealand written by Michael R. Rosen and published by . This book was released on 2001 with total page 520 pages. Available in PDF, EPUB and Kindle. Book excerpt: Groundwaters of New Zealand is the definitive new source for information on the groundwater resources of New Zealand. Written by many of New Zealand's leading experts, the book covers varied aspects of groundwater research, assessment, use, and management in New Zealand. This book is divided into two parts. The first part documents the history of groundwater development in New Zealand, and current research on interactions between groundwater systems and other components of the hydrological cycle such as health, processes (recharge and groundwater-surface water interaction) and techniques (isotopic methods). The second part of the book provides up-to-date regional summaries of groundwater resources and quality in every region of the country. Groundwater quality is explored in chapters on groundwater chemistry and microbiology, and the health aspects of groundwater. The book also contains detailed regional summaries, covering the location, use, quality, and management of groundwater resources, for the entire country.This book will be the essential reference text for all environmental, engineering, and resource management professionals working with groundwater, and students of the many scientific and engineering disciplines that contribute to groundwater investigations. Many groundwater users, both practicing and in school will find this book a valuable reference that adds significantly to their understanding of groundwater resources.-back cover.

Download or read book Encyclopedia of Geomorphology written by Andrew Goudie and published by . This book was released on 2004 with total page 1156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first such reference work in thirty-five years, this is a comprehensive guide to both specific landforms and the major types of processes that create them. This two-volume set provides a historical overview of the field, while exploring recent key discoveries about tectonic and climatic changes as well as the use of new techniques such as modeling, remote sensing, and process measurement. Written by a team of expert contributors from over thirty countries, the nearly 700 alphabetically arranged entries are cross-referenced, indexed, and include up-to-date suggestions for further reading. Fully illustrated with over 360 tables and illustrations, this will be the definitive reference source for students, researchers, and practitioners in geomorphology as well as geography, earth science, sedimentology, and environmental science.

Download or read book The Instream Flow Incremental Methodology written by Clair B. Stalnaker and published by . This book was released on 1995 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Desert Dust in the Global System written by Andrew S. Goudie and published by Springer Science & Business Media. This book was released on 2006-09-05 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dust storms are a vital component of the environment. This book explores and summarises recent research on where dust storms originate, why dust storms are generated, where dust is transported and deposited, the nature of dust deposits and the changing frequency of dust storms over a range of time-scales. It is the first global study of causes and effects of dust storms, which are one of the increasing nature catastrophes.

Download or read book The New Zealand Biodiversity Strategy written by New Zealand. Department of Conservation and published by . This book was released on 2000 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: " ... The purpose of the Strategy is to establish a strategic framework for action, to conserve and sustainably use and manage New Zealand's biodiversity. The primary focus is on New Zealand's indigenous biodiversity. However, because of the value and economic importance of much of our introduced biodiversity, the conservation of the genetic resources of our important introduced species is also addressed."--Executive summary.