The Role of Denitrification in the Nitrogen Cycle of New England Salt Marshes
The Role of Denitrification in the Nitrogen Cycle of New England Salt Marshes

Author: Michael Robert Hamersley

Publisher:

Published: 2002

Total Pages: 188

ISBN-13:

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(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.

Advanced Green Technology for Environmental Sustainability and Circular Economy
Advanced Green Technology for Environmental Sustainability and Circular Economy

Author: Maulin P. Shah

Publisher: CRC Press

Published: 2024-10-14

Total Pages: 279

ISBN-13: 1040132162

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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.

Coastal Wetlands
Coastal Wetlands

Author: Gerardo Perillo

Publisher: Elsevier

Published: 2018-11-02

Total Pages: 1130

ISBN-13: 0444638946

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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

Estuarine Ecology
Estuarine Ecology

Author: John W. Day, Jr.

Publisher: John Wiley & Sons

Published: 1989-05-09

Total Pages: 578

ISBN-13: 9780471062639

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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.

Nitrogen in the Marine Environment
Nitrogen in the Marine Environment

Author: Edward J. Carpenter

Publisher: Elsevier

Published: 2013-10-22

Total Pages: 919

ISBN-13: 1483288293

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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.

Ecology of Dunes, Salt Marsh and Shingle
Ecology of Dunes, Salt Marsh and Shingle

Author: J.R. Packham

Publisher: Springer Science & Business Media

Published: 1997-09-30

Total Pages: 356

ISBN-13: 9780412579806

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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.

Ecology of Marine Bivalves
Ecology of Marine Bivalves

Author: Richard F. Dame

Publisher: CRC Press

Published: 2016-04-19

Total Pages: 284

ISBN-13: 1439839123

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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.