Author: T. ANDERSENPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Carbon, nitrogen and phosphorus content of freshwater zooplankton
Author: T. ANDERSENNitrogen in the Marine Environment
Author: Douglas G. CaponePublisher: Elsevier
ISBN: 0080558925
Category : Science
Languages : en
Pages : 1759
Book Description
Since the first edition of Nitrogen in the Environment published in 1983, it has been recognized as the standard in the field. In the time since the book first appeared, there has been tremendous growth in the field with unprecedented discoveries over the past decade that have fundamentally changed the view of the marine nitrogen cycle. As a result, this Second Edition contains twice the amount of information as contained in the first edition. This updated edition is now available online, offering searchability and instant, multi-user access to this important information. *The classic text, fully updated to reflect the rapid pace of discovery*Provides researchers and students in oceanography, chemistry, and marine ecology an understanding of the marine nitrogen cycle*Available online with easy access and search - the information you need, when you need it
Stoichiometry and Research
Author: Alessio InnocentiPublisher: BoD – Books on Demand
ISBN: 9535101986
Category : Medical
Languages : en
Pages : 392
Book Description
The aim of this book is to provide an overview of the importance of stoichiometry in the biomedical field. It proposes a collection of selected research articles and reviews which provide up-to-date information related to stoichiometry at various levels. The first section deals with host-guest chemistry, focusing on selected calixarenes, cyclodextrins and crown ethers derivatives. In the second and third sections the book presents some issues concerning stoichiometry of metal complexes and lipids and polymers architecture. The fourth section aims to clarify the role of stoichiometry in the determination of protein interactions, while in the fifth section some selected experimental techniques applied to specific systems are introduced. The last section of the book is an attempt at showing some interesting connections between biomedicine and the environment, introducing the concept of biological stoichiometry. On this basis, the present volume would definitely be an ideal source of scientific information to researchers and scientists involved in biomedicine, biochemistry and other areas involving stoichiometry evaluation.
Carbon, nitrogen and phosphorus stoichiometry of crustacean zooplankton in the Baltic Sea
Author: J. WALVEClean Coastal Waters
Author: National Research CouncilPublisher: National Academies Press
ISBN: 0309069483
Category : Science
Languages : en
Pages : 422
Book Description
Environmental problems in coastal ecosystems can sometimes be attributed to excess nutrients flowing from upstream watersheds into estuarine settings. This nutrient over-enrichment can result in toxic algal blooms, shellfish poisoning, coral reef destruction, and other harmful outcomes. All U.S. coasts show signs of nutrient over-enrichment, and scientists predict worsening problems in the years ahead. Clean Coastal Waters explains technical aspects of nutrient over-enrichment and proposes both immediate local action by coastal managers and a longer-term national strategy incorporating policy design, classification of affected sites, law and regulation, coordination, and communication. Highlighting the Gulf of Mexico's "Dead Zone," the Pfiesteria outbreak in a tributary of Chesapeake Bay, and other cases, the book explains how nutrients work in the environment, why nitrogen is important, how enrichment turns into over-enrichment, and why some environments are especially susceptible. Economic as well as ecological impacts are examined. In addressing abatement strategies, the committee discusses the importance of monitoring sites, developing useful models of over-enrichment, and setting water quality goals. The book also reviews voluntary programs, mandatory controls, tax incentives, and other policy options for reducing the flow of nutrients from agricultural operations and other sources.
Physiology of the Cladocera
Author: Nikolai N. SmirnovPublisher: Academic Press
ISBN: 0123972345
Category : Technology & Engineering
Languages : en
Pages : 351
Book Description
The Physiology of Cladocera is a much-needed summary of foundational information on these increasingly important model organisms. This unique and valuable summary is based on the world's literature, including Russian research not widely available until now. It offers systematically arranged data on the physiology of Cladocera, assisting with explanation of their life and distribution, as well as discussion on directions of future research. Special expert contributions in genetics, immunology, and cytology round out the physiological chapters and provide comprehensive insight into the state of knowledge of Cladocera and its underlying mechanisms. Cladocera crustaceans make up a significant part of the natural communities and biological productivity of fresh waters. In recent decades, they have become globally studied for many purposes, including systematics, genetic, molecular, ecological and evolutionary biology studies. They are also used as "sentinel" organisms for assessing water quality and the environment. In addition, the genome of Daphnia (a genus within Cladocera) was recently sequenced and published, giving this system a much wider exposure. It has also led to a rapidly growing awareness of the importance of understanding physiological processes as they relate to evolutionary and ecological genomics and ecogenomic toxicology. Despite the increasing use of Cladocera in research and study, physiological background information on these creatures is fragmentary. Hundreds of unconnected publications have been accumulated on their physiology, and a synthesis and general representation of the literature has been much needed for the many researchers working with this organism. The Physiology of Cladocera stands alone as a valuable and comprehensive offering in this area for many researchers and students. Collects and synthesizes from the worldwide literature the state of knowledge of cladoceran physiology Forward-looking perspective incorporates information from the emerging technological worlds of genomics, cytology, chemical communication, and immunology Provides foundational information on Cladocera physiology for researchers in various fields, including conservation and evolutionary biology, genomics, ecology, ecotoxicology, and comparative physiology
The Interrelation of Carbon & Phosphorus in Regulating Heterotrophic and Autotrophic Populations in Aquatic Ecosystems
Author: Pat C. KerrPelagic Nutrient Cycles
Author: Tom AndersenPublisher: Springer Science & Business Media
ISBN: 3662034182
Category : Science
Languages : en
Pages : 291
Book Description
An analysis of the interactions between pelagic food web processes and element cycling in lakes. While some findings are examined in terms of classical concepts from the ecological theory of predator-prey systems, special emphasis is placed on exploring how stoichiometric relationships between primary producers and herbivores influence the stability and persistence of planktonic food webs. The author develops simple dynamic models of the cycling of mineral nutrients through plankton algae and grazers, and then goes on to explore them both analytically and numerically. The results thus obtained are of great interest to both theoretical and experimental ecologists. Moreover, the models themselves are of immense practical use in the area of lake management.
Ecological Research in the Lake Kinneret and Hula Valley (Israel) Ecosystems
Author: Prof. Moshe GophenPublisher: Scientific Research Publishing, Inc. USA
ISBN: 1618965409
Category : Nature
Languages : en
Pages : 341
Book Description
Recent studies are proposed to be included to present the actual role together with practical implementation of the ecosystems aimed at water supply, agricultural development, ecological services, lake fishery management, tourism. recreation and nature protection.
Progress in Ecological Stoichiometry
Author: Dedmer B. Van de WaalPublisher: Frontiers Media SA
ISBN: 2889456218
Category :
Languages : en
Pages : 382
Book Description
Ecological stoichiometry concerns the way that the elemental composition of organisms shapes their ecology. It deals with the balance or imbalance of elemental ratios and how that affects organism growth, nutrient cycling, and the interactions with the biotic and abiotic worlds. The elemental composition of organisms is a set of constraints through which all the Earth’s biogeochemical cycles must pass. All organisms consume nutrients and acquire compounds from the environment proportional to their needs. Organismal elemental needs are determined in turn by the energy required to live and grow, the physical and chemical constraints of their environment, and their requirements for relatively large polymeric biomolecules such as RNA, DNA, lipids, and proteins, as well as for structural needs including stems, bones, shells, etc. These materials together constitute most of the biomass of living organisms. Although there may be little variability in elemental ratios of many of these biomolecules, changing the proportions of different biomolecules can have important effects on organismal elemental composition. Consequently, the variation in elemental composition both within and across organisms can be tremendous, which has important implications for Earth’s biogeochemical cycles. It has been over a decade since the publication of Sterner and Elser’s book, Ecological Stoichiometry (2002). In the intervening years, hundreds of papers on stoichiometric topics ranging from evolution and regulation of nutrient content in organisms, to the role of stoichiometry in populations, communities, ecosystems and global biogeochemical dynamics have been published. Here, we present a collection of contributions from the broad scientific community to highlight recent insights in the field of Ecological Stoichiometry.