0
Your cart

Your cart is empty

Browse All Departments
  • All Departments
Price
Status
Brand

Showing 1 - 11 of 11 matches in All Departments

Our Clearing System and Clearing Houses (Hardcover): W. Howarth Our Clearing System and Clearing Houses (Hardcover)
W. Howarth
R864 Discovery Miles 8 640 Ships in 12 - 19 working days
The Nitrogen Cycle at Regional to Global Scales (Hardcover, 2002 ed.): Elizabeth W. Boyer, Robert W. Howarth The Nitrogen Cycle at Regional to Global Scales (Hardcover, 2002 ed.)
Elizabeth W. Boyer, Robert W. Howarth
R5,694 Discovery Miles 56 940 Ships in 10 - 15 working days

Human activity has more than doubled the rate of creation of reactive nitrogen on the land surface of the earth over natural levels, with much of this change occurring in recent decades. Major drivers behind this increase are population growth, agricultural intensification, and emissions of nitrogen pollutants to the atmosphere from the combustion of fossil fuels. As a result, nitrogen is accumulating in the landscape and in water at unprecedented levels, and is connected to a host of environmental problems including effects on natural ecosystems and on human health. For example, eutrophication caused by excessive inputs of N from landscapes to the oceans is one of the greatest factors altering water quality in coastal ecosystems worldwide.

This synthesis is the final report from the International SCOPE Project on Nitrogen Transport and Transformations: A Regional and Global Analysis. SCOPE (the Scientific Committee on Problems of the Environment) authorized the Nitrogen Project because of the need to better understand how humans have altered nitrogen cycling globally and at the scale of large regions. The project has synthesized information through a series of workshops over the past 8 years, involving over 250 scientists from over 20 different nations. Papers in this volume explore the extent to which human activity has affected the nitrogen cycle in terrestrial regions and in the world's oceans, and discuss the implications of accelerated nitrogen cycling for nature and society.

Essentials of Ecology (Paperback, 4th Edition): Michael Begon, Robert W. Howarth, Colin R. Townsend Essentials of Ecology (Paperback, 4th Edition)
Michael Begon, Robert W. Howarth, Colin R. Townsend
R4,269 Discovery Miles 42 690 Ships in 9 - 17 working days

Essentials of Ecology, 4th Edition presents introductory ecology in an accessible, state-of-the-art format designed to cultivate the novice student's understanding of, and fascination with, the natural world. This new edition has been updated throughout, with new, full-color illustrations, and comes with an accompanying website with downloadable illustrations, multiple-choice questions, and interactive models.

Methods in Ecosystem Science (Hardcover, 2000 ed.): Osvaldo E. Sala Methods in Ecosystem Science (Hardcover, 2000 ed.)
Osvaldo E. Sala; Foreword by E.P. Odum; Edited by Robert B. Jackson, Harold A. Mooney, Robert W. Howarth
R4,484 Discovery Miles 44 840 Ships in 10 - 15 working days

Ecology at the ecosystem level has both necessitated and benefited from new methods and technologies as well as those adapted from other disciplines. With the ascendancy of ecosystem science and management, the need has arisen for a comprehensive treatment of techniques used in this rapidly-growing field. Methods in Ecosystem Science answers that need by synthesizing the advantages, disadvantages and tradeoffs associated with the most commonly used techniques in both aquatic and terrestrial research.The book is divided into sections addressing carbon and energy dynamics, nutrient and water dynamics, manipulative ecosystem experiements and tools to synthesize our understanding of ecosystems. Detailed information about various methods will help researchers choose the most appropriate methods for their particular studies. Prominent scientists discuss how tools from a variety of disciplines can be used in ecosystem science at different scales.

Nitrogen Cycling in the North Atlantic Ocean and its Watersheds - Report of the International SCOPE Nitrogen Project... Nitrogen Cycling in the North Atlantic Ocean and its Watersheds - Report of the International SCOPE Nitrogen Project (Paperback, Softcover reprint of the original 1st ed. 1996)
Robert W. Howarth
R2,884 Discovery Miles 28 840 Ships in 10 - 15 working days

Human activity has dramatically altered the global nitrogen cycle in recent decades. These changes are not evenly distributed around the world; rather, they are greatest in regions of significant industrial and agricultural activity, as the synthesis and use of inorganic fertilizers, cultivation of legumes, burning of fossil fuels, and the simple act of concentrating humans and animals in dense populations all lead to the release of excess, reactive forms of nitrogen into the environment. In part because reactive nitrogen is frequently a limiting nutrient in many terrestrial and aquatic systems, an excess can lead to a variety of adverse effects on both environmental and human health. The North Atlantic Ocean and its contributing watersheds constitute a region which has seen perhaps the greatest increase in anthropogenically-derived nitrogen. In May of 1994, the International Scope Nitrogen Project, with funding from the Andrew Mellon Foundation, the United Nations Environment Program, and the World Meteorological Organization, sponsored a workshop held on Block Island, RI, USA, entitled Nitrogen Dynamics of the North Atlantic Basin'. More than 50 scientists from 12 different countries convened with a unique set of goals: an integrated and comprehensive estimate of the current nitrogen cycle of the ocean, coastal systems, and contributing watersheds of the North Atlantic region; an analysis of human-induced changes to those cycles; and an assessment of the current and future effects of human-induced changes to nitrogen cycling throughout the globe.

Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls (Paperback, Softcover reprint of hardcover... Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls (Paperback, Softcover reprint of hardcover 1st ed. 2006)
Luiz A. Martinelli, Robert W. Howarth
R2,873 Discovery Miles 28 730 Ships in 10 - 15 working days

Advances in our understanding of the nitrogen cycle and the impact of anthropogenic activities on regional to global scales depend on the expansion of scientific studies to these fast-developing regions. This book presents a series of studies from across the Americas whose aim is to highlight key natural processes that control nitrogen cycling as well as discuss the main anthropogenic influences on the nitrogen cycle in both the tropical and temperate regions of the Americas.

Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls (Hardcover, 2006 ed.): Luiz A. Martinelli,... Nitrogen Cycling in the Americas: Natural and Anthropogenic Influences and Controls (Hardcover, 2006 ed.)
Luiz A. Martinelli, Robert W. Howarth
R2,911 Discovery Miles 29 110 Ships in 10 - 15 working days

Advances in our understanding of the nitrogen cycle and the impact of anthropogenic activities on regional to global scales depend on the expansion of scientific studies to these fast-developing regions. This book presents a series of studies from across the Americas whose aim is to highlight key natural processes that control nitrogen cycling as well as discuss the main anthropogenic influences on the nitrogen cycle in both the tropical and temperate regions of the Americas.

Modern Biogeochemistry (Paperback, 2002 ed.): Robert W. Howarth Modern Biogeochemistry (Paperback, 2002 ed.)
Robert W. Howarth; V. N Bashkin
R1,778 Discovery Miles 17 780 Ships in 10 - 15 working days

Modern Biogeochemistry is aimed to generalize modern ideas of biogeochemical developments during the last decades. It is designed to support a general course in biogeochemistry, and as such, is likely to have a broad market among the many universities and colleges that are adding such courses to their curricula. This book aims to supplement the existing textbooks by providing modern understanding of biogeochemistry, from evolutionary biogeochemistry to practical applications of biogeochemical ideas such as human biogeochemistry, biogeochemical standards and biogeochemical technologies.
To a certain extent this textbook is a summary of both scientific results of various authors and classes in biogeochemistry, that have been given to students by authors during the last 5 to 10 years at different universities throughout the world such as Cornell, Moscow, Seoul and Bangkok. Biogeochemistry is becoming an increasingly popular subject for graduate and postgraduate education. Courses in ecology, geography, biology, chemistry, environmental science, public health and environmental engineering all tend to have a biogeochemical component in their syllabuses to a greater or lesser extent.

Methods in Ecosystem Science (Paperback, Softcover reprint of the original 1st ed. 2000): Osvaldo E. Sala Methods in Ecosystem Science (Paperback, Softcover reprint of the original 1st ed. 2000)
Osvaldo E. Sala; Foreword by E.P. Odum; Edited by Robert B. Jackson, Harold A. Mooney, Robert W. Howarth
R3,215 Discovery Miles 32 150 Ships in 10 - 15 working days

Ecology at the ecosystem level has both necessitated and benefited from new methods and technologies as well as those adapted from other disciplines. With the ascendancy of ecosystem science and management, the need has arisen for a comprehensive treatment of techniques used in this rapidly-growing field. Methods in Ecosystem Science answers that need by synthesizing the advantages, disadvantages and tradeoffs associated with the most commonly used techniques in both aquatic and terrestrial research.The book is divided into sections addressing carbon and energy dynamics, nutrient and water dynamics, manipulative ecosystem experiements and tools to synthesize our understanding of ecosystems. Detailed information about various methods will help researchers choose the most appropriate methods for their particular studies. Prominent scientists discuss how tools from a variety of disciplines can be used in ecosystem science at different scales.

Our Clearing System and Clearing Houses (Paperback): W. Howarth Our Clearing System and Clearing Houses (Paperback)
W. Howarth
R548 Discovery Miles 5 480 Ships in 10 - 15 working days
Our Clearing System and Clearing Houses (Hardcover): W. Howarth Our Clearing System and Clearing Houses (Hardcover)
W. Howarth
R867 Discovery Miles 8 670 Out of stock
Free Delivery
Pinterest Twitter Facebook Google+
You may like...
Hi-net 8x10/100/1000 Poe +1 Gigabit Rj45…
R1,936 Discovery Miles 19 360
Apartheid's Stalingrad - How The…
Rory Riordan Paperback R420 R388 Discovery Miles 3 880
First Russian Reader for Beginners…
Vadim Zubakhin Hardcover R863 Discovery Miles 8 630
Preserving Privilege - California…
Jewelle Taylor Gibbs, Teiahsha Bankhead Hardcover R2,779 Discovery Miles 27 790
An Introduction to Jungian Coaching
Avi Goren-Bar Paperback R959 Discovery Miles 9 590
Cudy PE10 Gigabit PCI Express Network…
R167 R153 Discovery Miles 1 530
Ecological and Climate-Conscious…
Alison Whybrow, Eve Turner, … Paperback R1,070 Discovery Miles 10 700
Dahua 16-Port Unmanaged Gigabit Switch…
R1,099 R1,036 Discovery Miles 10 360
Parrot A2 Standing Poster Frame - Steel…
R5,345 R3,866 Discovery Miles 38 660
Discover Dorset Fossils
Richard Edmonds Paperback R231 Discovery Miles 2 310

 

Partners