Respiration in Aquatic Ecosystems

Author: Paul A. del Giorgio
Publisher: Oxford University Press, USA
ISBN: 9780191523618
Format: PDF, ePub, Docs
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Respiration in aquatic ecosystems is one of the major, and also least understood, components of the global carbon cycle; currently there is no textbook that reviews and analyses the extant information on respiration in natural aquatic systems. This book represents a thorough synthesis and in-depth analysis of the current state of understanding of respiration in aquatic systems, as well as of the main scientific questions and challenges that face this particular field. This work is not intended as an introductory textbook, but rather is aimed at advanced graduate students and researchers actively working in the fields of aquatic ecology, biological oceanography, and biogeochemistry in general. - ;Respiration in aquatic ecosystems is one of the major, and also least understood, components of the global carbon cycle; currently there is no textbook that reviews and analyses the extant information on respiration in natural aquatic systems. This book represents a thorough synthesis and in-depth analysis of the current state of understanding of respiration in aquatic systems, as well as of the main scientific questions and challenges that face this particular field. This work is not intended as an introductory textbook, but rather is aimed at advanced graduate students and researchers actively working in the fields of aquatic ecology, biological oceanography, and biogeochemistry in general. - ;Overall, Respiration in Aquatic Ecosystems is an inspiration for those in the field to expand their own studies, to students to find out more about the specific role of respiration in global carbon fluxes and for scientists, such as myself, who have not previously considered the community and global implications of respiratory measurements. -

Aquatic Ecosystems

Author: Stuart Findlay
Publisher: Academic Press
ISBN: 0122563719
Format: PDF
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Aquatic Ecosystems explains the interplay between various movements of matter and energy through ecosystems mediated by Dissolved Organic Matter. This book provides information on how much DOM there is in a particular aquatic ecosystem and where it originates. It explains whether the DOM composition varies from time to time and place to place. It also details how DOM becomes incorporated into microbial food webs, and gives a better, clarifying, understanding to its significance of DOM. Dissolved Organic Matter (called DOM) is incredibly important in all aquatic ecosystems. Although it might seem that logs and leaves are more important, in fact the DOM is more crucial because the DOM is in a form that is available for use by all the organisms living in the the water. Furthermore, DOM influences complex food webs by mediating the availability of aquatic nutrients, metals, salts and minerals. DOM also affects water clarity, which of course has alters the way animals and plants live and feed in the water. There are many ways to study DOM and this book focuses on several central questions. How much DOM is there in a particular aquatic ecosytem? Where does it come from? Does the composition of the DOM vary from time to time and place to palce? How does DOM become incorporated into microbial food webs, which are the basis of plant, invertebrate and vertebrate food webs? How can the answers to these and other questions about DOM be considered together so that a better understanding of the significance of DOM can emerge?

Drought and Aquatic Ecosystems

Author: P. Sam Lake
Publisher: John Wiley & Sons
ISBN: 1444341790
Format: PDF, ePub, Docs
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Droughts are a major hazard to both natural and human-dominated environments and those, especially of long duration and high intensity, can be highly damaging and leave long-lasting effects. This book describes the climatic conditions that give rise to droughts, and their various forms and chief attributes. Past droughts are described including those that had severe impacts on human societies. As a disturbance, droughts can be thought of as “ramps” in that they usually build slowly and take time to become evident. As precipitation is reduced, flows from catchments into aquatic systems decline. As water declines in water bodies, ecological processes are changed and the biota can be drastically reduced, though species and populations may survive by using refuges. Recovery from drought varies in both rates and in degrees of completeness and may be a function of both refuge availability and connectivity. For the first time, this book reviews the available rather scattered literature on the impacts of drought on the flora, fauna and ecological processes of aquatic ecosystems ranging from small ponds to lakes and from streams to estuaries. The effects of drought on the biota of standing waters and flowing waters and of temporary waters and perennial systems are described and compared. In addition, the ways in which human activity can exacerbate droughts are outlined. In many parts of the world especially in the mid latitudes, global warming may result in increases in the duration and intensity of droughts. Drought and Aquatic Ecosystems is essential reading for freshwater ecologists, water resource managers and advanced students.

Microbial Role in the Carbon Cycle in Tropical Inland Aquatic Ecosystems

Author: André Megali Amado
Publisher: Frontiers Media SA
ISBN: 2889451275
Format: PDF, ePub
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Aquatic microorganisms are tidily related to the carbon cycle in aquatic systems, especially in respect to its accumulation and emission to atmosphere. In one hand, the autotrophs are responsible for the carbon input to the ecosystems and trophic chain. On the other hand, the heterotrophs traditionally play a role in the carbon mineralization and, since microbial loop theory, may play a role to carbon flow through the organisms. However, it is not yet clear how the heterotrophs contribute to carbon retention and emission especially from tropical aquatic ecosystems. Most of the studies evaluating the role of microbes to carbon cycle in inland waters were performed in high latitudes and only a few studies in the tropical area. In the prospective of global changes where the warm tropical lakes and rivers become even warmer, it is important to understand how microorganisms behave and interact with carbon cycle in the Earth region with highest temperature and light availability. This research topic documented microbial responses to natural latitudinal gradients, spatial within and between ecosystems gradients, temporal approaches and temperature and nutrient manipulations in the water and in the sediment.

Bottom Soils Sediment and Pond Aquaculture

Author: Claude E. Boyd
Publisher: Springer Science & Business Media
ISBN: 9780412069413
Format: PDF, ePub, Mobi
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This book elucidates the vital but often neglected relationship between bottom soil and water quality. An understanding of this important connection is essential for maintaining water quality within optimum ranges for shrimp and fish. It is the first volume to provide information on topics from soil science essential to pond aquaculture. The impact of soil-water interactions on water quality is examined, and the volume provides important methods for enhancing the soil conditions in ponds. Detailed chapters include coverage of *soils in pond aquaculture *physical, chemical, and mineralogical properties of soil *soil nutrients *the exchange of dissolved substances between soil and water *soil organic matter, anaerobic respiration, and oxidation-reduction *sediment soil *relationships to aquatic animal production *pond bottom management and soil analyses. Bottom Soils, Sediment, and Pond Aquaculture gives students and professionals in aquaculture insight into the principles of soil science which most affect pond management and provides them with an essential and current reference.

Methods in Ecosystem Science

Author: Osvaldo E. Sala
Publisher: Springer Science & Business Media
ISBN: 1461212243
Format: PDF, Mobi
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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.

Oxidative Stress in Aquatic Ecosystems

Author: Doris Abele
Publisher: John Wiley & Sons
ISBN: 1444345966
Format: PDF, ePub, Docs
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Reactive oxygen species (ROS) are increasingly appreciated as down-stream effectors of cellular damage and dysfunction under natural and anthropogenic stress scenarios in aquatic systems. This comprehensive volume describes oxidative stress phenomena in different climatic zones and groups of organisms, taking into account specific habitat conditions and how they affect susceptibility to ROS damage. A comprehensive and detailed methods section is included which supplies complete protocols for analyzing ROS production, oxidative damage, and antioxidant systems. Methods are also evaluated with respect to applicability and constraints for different types of research. The authors are all internationally recognized experts in particular fields of oxidative stress research. This comprehensive reference volume is essential for students, researchers, and technicians in the field of ROS research, and also contains information useful for veterinarians, environmental health professionals, and decision makers.