The Role of Denitrification in the Nitrogen Cycle of New England Salt Marshes PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download The Role of Denitrification in the Nitrogen Cycle of New England Salt Marshes PDF full book. Access full book title The Role of Denitrification in the Nitrogen Cycle of New England Salt Marshes by Michael Robert Hamersley. Download full books in PDF and EPUB format.
Author: Michael Robert Hamersley
Publisher:
ISBN:
Category : Denitrification
Languages : en
Pages : 188
Get Book Here
Book Description
(Cont.) Allochthonous denitrification accounted for 39% of total sediment denitrification (2.7 mol N m−2 yr−1). 46% of remineralized ammonium was denitrified, while the contribution of autochthonous denitrification to 02 and C02 fluxes was 18% and 10%, respectively. A 15N-ammonium tracer was used to study competition between plants and nitrifying bacteria for remineralized ammonium. In undisturbed sediments of Spartina alterniflora, plant uptake out-competed nitrification-denitrification, with plant uptake accounting for 66% of remineralized ammonium during the growing season. Under N fertilization (15.5 mol m−2 yr−1), both plant N uptake and denitrification increased, but denitrification dominated, accounting for 72% of the available N. When plant uptake was hydrologically suppressed, nitrification-denitrification was stimulated by the excess N, shifting the competitive balance toward denitrification.
Author: Michael Robert Hamersley
Publisher:
ISBN:
Category : Denitrification
Languages : en
Pages : 188
Get Book Here
Book Description
(Cont.) Allochthonous denitrification accounted for 39% of total sediment denitrification (2.7 mol N m−2 yr−1). 46% of remineralized ammonium was denitrified, while the contribution of autochthonous denitrification to 02 and C02 fluxes was 18% and 10%, respectively. A 15N-ammonium tracer was used to study competition between plants and nitrifying bacteria for remineralized ammonium. In undisturbed sediments of Spartina alterniflora, plant uptake out-competed nitrification-denitrification, with plant uptake accounting for 66% of remineralized ammonium during the growing season. Under N fertilization (15.5 mol m−2 yr−1), both plant N uptake and denitrification increased, but denitrification dominated, accounting for 72% of the available N. When plant uptake was hydrologically suppressed, nitrification-denitrification was stimulated by the excess N, shifting the competitive balance toward denitrification.
Author: Maulin P. Shah
Publisher: CRC Press
ISBN: 1040132162
Category : Technology & Engineering
Languages : en
Pages : 279
Get Book Here
Book Description
This book elucidates the growing application of greener technology with a circular economic approach and examines the connection among environment, economy, and ecology for an emerging and supportable human society. It focuses on numerous features of environmental sustainability and, more responsibly, labels the technologies and methods essential to overcome growing environmental challenges, including biotechnological methods, cutting-edge research, applications, and procedures. Features: Proposes the latest advances in waste treatment, pollution reduction, and circular economy development based on green technology. Considers the relationship between green technological progress and various forms of circular economy. Describes resource recycling and recovery. Covers advanced technology in bioremediation. Includes reports and case studies highlighting the "how-to" on waste-to-energy generation. This book is aimed at professionals and graduate students in environmental engineering, project management, bioremediation, sustainable development, and waste management.
Author: Xianbiao Lin
Publisher: Frontiers Media SA
ISBN: 2832515215
Category : Science
Languages : en
Pages : 238
Get Book Here
Book Description
Author: Gerardo Perillo
Publisher: Elsevier
ISBN: 0444638946
Category : Science
Languages : en
Pages : 1130
Get Book Here
Book Description
Coastal Wetlands, Second Edition: An Integrated and Ecosystem Approach provides an understanding of the functioning of coastal ecosystems and the ecological services that they provide. As coastal wetlands are under a great deal of pressure from the dual forces of rising sea levels and the intervention of human populations, both along the estuary and in the river catchment, this book covers important issues, such as the destruction or degradation of wetlands from land reclamation and infrastructures, impacts from the discharge of pollutants, changes in river flows and sediment supplies, land clearing, and dam operations. - Covers climate change and its influence on coastal wetland form and function - Provides a fully updated and expanded resource, including new chapters on modeling, management and the impact of climate change - Contains full-color figures of wetlands and estuaries in different parts of the world
Author: John W. Day, Jr.
Publisher: John Wiley & Sons
ISBN: 9780471062639
Category : Nature
Languages : en
Pages : 578
Get Book Here
Book Description
This textbook covers the physical and chemical aspects of estuaries, the biology and ecology of key organisms, the flow of organic matter through estuaries, and human interactions, such as the environmental impact of fisheries on estuaries and the effects of global climate change on these important ecosystems. Each chapter will begin with basic concepts and then move on to describing applications and current practice. This new edition is being authored by a team of world experts from the estuarine science community.
Author: Edward J. Carpenter
Publisher: Elsevier
ISBN: 1483288293
Category : Science
Languages : en
Pages : 919
Get Book Here
Book Description
Nitrogen in the Marine Environment provides information pertinent to the many aspects of the nitrogen cycle. This book presents the advances in ocean productivity research, with emphasis on the role of microbes in nitrogen transformations with excursions to higher trophic levels. Organized into 24 chapters, this book begins with an overview of the abundance and distribution of the various forms of nitrogen in a number of estuaries. This text then provides a comparison of the nitrogen cycling of various ecosystems within the marine environment. Other chapters consider chemical distributions and methodology as an aid to those entering the field. This book discusses as well the enzymology of the initial steps of inorganic nitrogen assimilation. The final chapter deals with the philosophy and application of modeling as an investigative method in basic research on nitrogen dynamics in coastal and open-ocean marine environments. This book is a valuable resource for plant biochemists, microbiologists, aquatic ecologists, and bacteriologists.
Author:
Publisher:
ISBN:
Category : Dissertations, Academic
Languages : en
Pages : 652
Get Book Here
Book Description
Author: Michael J. Kennish
Publisher: CRC Press
ISBN: 1351080040
Category : Science
Languages : en
Pages : 404
Get Book Here
Book Description
The objective of this book is to review the physical and chemical characteristics of estuaries. The volume has been designed principally as a reference for scientists, but administers, managers, decision makers, and other professionals involved in some way with estuarine research can find value in the text.
Author: Richard F. Dame
Publisher: CRC Press
ISBN: 1439839123
Category : Nature
Languages : en
Pages : 284
Get Book Here
Book Description
Exploring the potential use of bivalves as indicators and monitors of ecosystem health, this book describes live and computer simulated experiments, mesocosm studies, and field manipulation experiments. This second edition discusses major new developments, including phase shifts in many coastal and estuarine ecosystems dominated by suspension-feeding bivalves, the invasion or introduction of alien bivalve species, the rapid growth of environmental restoration focused on bivalves, and the examination of geological history with regard to global climate change and its impact on bivalve-dominated systems.
Author: J.R. Packham
Publisher: Springer Science & Business Media
ISBN: 9780412579806
Category : Nature
Languages : en
Pages : 356
Get Book Here
Book Description
Summary: Discusses coastal sand dune, shingle beach, and salt marsh ecosystems, communities based upon relatively unconsolidated granular deposits which frequently rest upon solid rock or, much more rarely, on peat.
