The Ecology And Evolution Of Top Down And Bottom Up Control In Mountain Lakes
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The Ecology And Evolution Of Top Down And Bottom Up Control In Mountain Lakes
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Author : Celia C. Symons
language : en
Publisher:
Release Date : 2017
The Ecology And Evolution Of Top Down And Bottom Up Control In Mountain Lakes written by Celia C. Symons and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017 with categories.
Determining factors that control how biomass is distributed among plants, animals, microbes and non-living components of ecosystems is a major goal of ecology. Theoretical and empirical work have demonstrated that ecosystem structure and function may vary with the environment, but studies often overlook the role of adaptation and shifts in species composition that will occur over longer timescales relevant to climate change. For my doctoral research I used a 'natural experiment' in Sierra Nevada mountain lakes to ask questions about the strength of top-down and bottom-up forcing in a natural system where communities have assembled and adapted to differences in the environment over periods from years to millennia. In Chapter 1 I compare fish and fishless lakes along an elevational gradient, and show that an interaction between fish presence and temperature alters food web structure, ecosystem function, species and trait composition. Top-down forcing from fish on plankton biomass was stronger in warm lakes, suggesting that a warmer climate will magnify the effect of introduced predators on biomass distribution. Fish and warmer temperatures select for the same species and traits of zooplankton in lakes, suggesting that lakes containing invasive predators may be less sensitive to warming. In Chapter 2 I test this hypothesis using a large-scale community transplant experiment, where I transplanted plankton communities that assembled and evolved at different elevations and predator regimes to new elevations and the addition or removal of fish. I found that past exposure to fish caused an evolutionary response in keystone members of the zooplankton community that increased their fitness in environments without fish. This suggests that past selection can change how communities will respond to further environmental change. In Chapter 3, I show that bottom-up processes influence fish growth, with higher growth rates occurring in warmer, clearer lakes. My thesis helps to elucidate the effects of temperature and predators on physiology, evolution, species ranges and community interactions, which is necessary to forecast the response of ecosystems to climate change. My thesis integrates across these levels of organization to understand the origin of ecosystem resilience in a changing climate.
Foundations Of Restoration Ecology
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Author : Donald A. Falk
language : en
Publisher: Island Press
Release Date : 2013-03-19
Foundations Of Restoration Ecology written by Donald A. Falk and has been published by Island Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-03-19 with Nature categories.
As the practical application of ecological restoration continues to grow, there is an increasing need to connect restoration practice to areas of underlying ecological theory. Foundations of Restoration Ecology is an important milestone in the field, bringing together leading ecologists to bridge the gap between theory and practice by translating elements of ecological theory and current research themes into a scientific framework for the field of restoration ecology. Each chapter addresses a particular area of ecological theory, covering traditional levels of biological hierarchy (such as population genetics, demography, community ecology) as well as topics of central relevance to the challenges of restoration ecology (such as species interactions, fine-scale heterogeneity, successional trajectories, invasive species ecology, ecophysiology). Several chapters focus on research tools (research design, statistical analysis, modeling), or place restoration ecology research in a larger context (large-scale ecological phenomena, macroecology, climate change and paleoecology, evolutionary ecology). The book makes a compelling case that a stronger connection between ecological theory and the science of restoration ecology will be mutually beneficial for both fields: restoration ecology benefits from a stronger grounding in basic theory, while ecological theory benefits from the unique opportunities for experimentation in a restoration context. Foundations of Restoration Ecology advances the science behind the practice of restoring ecosystems while exploring ways in which restoration ecology can inform basic ecological questions. It provides the first comprehensive overview of the theoretical foundations of restoration ecology, and is a must-have volume for anyone involved in restoration research, teaching, or practice.
Progress In Ecological Stoichiometry
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Author : Dedmer B. Van de Waal
language : en
Publisher: Frontiers Media SA
Release Date : 2018
Progress In Ecological Stoichiometry written by Dedmer B. Van de Waal and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.
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.
Periphyton
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Author : Yonghong Wu
language : en
Publisher: Elsevier
Release Date : 2016-08-29
Periphyton written by Yonghong Wu and has been published by Elsevier this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-08-29 with Science categories.
Periphyton: Functions and Application in Environmental Remediation presents a systematic overview of a wide variety of periphyton functions and applications in environmental remediation, providing readers with an understanding of the biological/ecological features of periphyton, the methodology of their study, and their application in environmental conservation. With increases in environmental stress, anthropogenic impacts, and the global decline in biodiversity, there is a pressing need for methods to assess and improve environmental quality that are rapid, reliable, and cost-effective. Periphyton is an important component of benthic communities and plays a crucial role in the functioning of microbial food webs. Because of a number of advantages, such as a short lifecycle, relative immobility, more rapid responses to environmental stress and anthropogenic impact than any metazoa, ease of sampling, availability of taxonomic/molecular identification, and standardized methodologies for temporal/spatial comparisons, there has, in recent decades, been an increased interest in periphyton as a tool in biological conservation in aquatic ecosystems. Presents case studies that help readers implement similar ecological designs Focuses on the function of periphyton in remediating destructed ecosystems Provides readers with an understanding of periphyton in practice, especially the value of periphyton in enhancing environmental and ecosystem qualities Discusses the role of periphyton in purifying water and its effect on abiotic elements
Using Paleolimnology For Management And Restoration Of Lakes
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Author : Isabelle Larocque-Tobler
language : en
Publisher: Frontiers Media SA
Release Date : 2017-02-03
Using Paleolimnology For Management And Restoration Of Lakes written by Isabelle Larocque-Tobler and has been published by Frontiers Media SA this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-02-03 with Ecology categories.
This e-book presents state-of-the-art research projects and opinions on using paleolimnology for lake restoration and managment. It illustrates the general idea that proposing adequate restoration and managment solutions must be based on the past. Knowing the natural and anthropic variations a water body went through defines the best ways for maintaining or restoring an ecosystem. By quantifying baseline conditions, paleolimnology provides a definite plan for restoration and management. This cannot be achieved without studying the past.
Limnology
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Author : Robert G. Wetzel
language : en
Publisher: Gulf Professional Publishing
Release Date : 2001-04-06
Limnology written by Robert G. Wetzel and has been published by Gulf Professional Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001-04-06 with Nature categories.
This book gives a comparative treatment of topics accross lake, reservoir, and rive ecosystems. These analysis do indeed indicate differences among the properties of lakes, land-water interface regions, reservoirs, and rivers. Importantly, these analysis also indicate marked commonality in function.
Ecological Society Of America Annual Meeting Abstracts
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Author : Ecological Society of America. Meeting
language : en
Publisher:
Release Date : 2004
Ecological Society Of America Annual Meeting Abstracts written by Ecological Society of America. Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004 with Ecology categories.
Trophic Ecology
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Author : Torrance C. Hanley
language : en
Publisher: Cambridge University Press
Release Date : 2015-05-07
Trophic Ecology written by Torrance C. Hanley and has been published by Cambridge University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-05-07 with Nature categories.
Examining the interaction of bottom-up and top-down forces, it presents a unique synthesis of trophic interactions within and across ecosystems.
Stream Ecology
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Author : J. David Allan
language : en
Publisher: Springer Science & Business Media
Release Date : 2012-12-06
Stream Ecology written by J. David Allan and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012-12-06 with Science categories.
Running waters are enormously diverse, ranging from torrential mountain brooks, to large lowland rivers, to great river systems whose basins occupy subcontinents. While this diversity makes river ecosystems seem overwhelmingly complex, a central theme of this volume is that the processes acting in running waters are general, although the settings are often unique. The past two decades have seen major advances in our knowledge of the ecology of streams and rivers. New paradigms have emerged, such as the river continuum and nutrient spiraling. Community ecologists have made impressive advances in documenting the occurrence of species interactions. The importance of physical processes in rivers has attracted increased attention, particularly the areas of hydrology and geomorphology, and the inter-relationships between physical and biological factors have become better understood. And as is true for every area of ecology during the closing years of the twentieth century it has become apparent that the study of streams and rivers cannot be carried out by excluding the role of human activities, nor can we ignore the urgency of the need for conservation. These developments are brought together in Stream Ecology: Structure and function of running waters, designed to serve as a text for advanced undergraduate and graduate students, and as a reference book for specialists in stream ecology and related fields.
Lake Remediation By Top Down And Bottom Up Management
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Author : Amy Anderson
language : en
Publisher:
Release Date : 2018
Lake Remediation By Top Down And Bottom Up Management written by Amy Anderson and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with categories.