Investigating Ecosystem Scale Responses To Changes In Lake Food Webs
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Investigating Ecosystem Scale Responses To Changes In Lake Food Webs
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Author : Tyler James Butts
language : en
Publisher:
Release Date : 2023
Investigating Ecosystem Scale Responses To Changes In Lake Food Webs written by Tyler James Butts and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2023 with categories.
Aquatic ecosystems are increasingly facing ecosystem-scale disturbances that affect water quality and ecosystem services. Food webs have substantial influences on how disturbances are propagated through ecosystems and the structure of trophic interactions shapes nutrient cycling and energy flow. In my dissertation, I used food webs to improve the understanding of dynamics in disturbed ecosystems, and develop our understanding of how food webs mediate, and respond to, increasingly frequent and intense disturbances. Chapter 1 used lower food web dynamics to assess consumer nutrient cycling within a hypereutrophic reservoir, demonstrating that the lower food web has a substantial influence on early summer phosphorus availability and phytoplankton size structure. Chapter 2 quantified zooplankton and macroinvertebrate size structure as a tool to assess food web response to an incentivized harvest of common carp (Cyprinus carpio) and bigmouth buffalo (Ictiobus cyprinellus). This analysis showed that the biomanipulation did not significantly affect food web structure potentially explaining the lack of water quality response. Expanding to the whole food web, chapter 3 tested whether food web structure mediates ecosystem responses to discrete disturbance-storm-driven nutrient loading-finding greater benthic-pelagic coupling increased the resistance and resilience of algal biomass response to pulsed nutrient loading events. Chapter 4 used a bioenergetics approach to explore changes in energy flux and food web stability over 19 years in the Trout Lake pelagic food web, including an invasion by a mid-trophic level invader, Bythotrephes longimanus. This analysis highlighted how a mid-trophic level invader alters the trajectory of an ecosystem by decreasing energy flux and temporarily altering food web stability. In summary, this research has advanced our understanding of how food webs drive ecosystem function and mediate ecosystem-scale responses within aquatic ecosystems.
Lake Food Web Responses Across Environmental Gradients
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Author : Tyler Tunney
language : en
Publisher:
Release Date : 2014
Lake Food Web Responses Across Environmental Gradients written by Tyler Tunney and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
Zooplankton Diversity And Pelagic Food Webs
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Author : Marina Manca
language : en
Publisher: MDPI
Release Date : 2021-05-04
Zooplankton Diversity And Pelagic Food Webs written by Marina Manca and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2021-05-04 with Science categories.
Zooplankton are of key importance in the structure and functioning of aquatic food webs. They contribute to a large part of the functional and structural biodiversity of predator and prey plankton communities. Promptly responding to long-term and seasonal changes in the physical and chemical environment, they are sensitive indicators of patterns and mechanisms of impact drivers, both natural and human induced. In this volume, we aim to present evidence for both long-term and seasonal changes in zooplankton community structure and dynamics, investigating different approaches from population dynamics to advanced molecular techniques and reconstructing past communities from subfossil remains in lake sediments.
Climate Change Impacts On Freshwater Ecosystems
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Author : Martin Kernan
language : en
Publisher: John Wiley & Sons
Release Date : 2011-02-14
Climate Change Impacts On Freshwater Ecosystems written by Martin Kernan and has been published by John Wiley & Sons this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-02-14 with Science categories.
This text examines the impact of climate change on freshwater ecosystems, past, present and future. It especially considers the interactions between climate change and other drivers of change including hydromorphological modification, nutrient loading, acid deposition and contamination by toxic substances using evidence from palaeolimnology, time-series analysis, space-for-time substitution, laboratory and field experiments and process modelling. The book evaluates these processes in relation to extreme events, seasonal changes in ecosystems, trends over decadal-scale time periods, mitigation strategies and ecosystem recovery. The book is also concerned with how aspects of hydrophysical, hydrochemical and ecological change can be used as early indicators of climate change in aquatic ecosystems and it addresses the implications of future climate change for freshwater ecosystem management at the catchment scale. This is an ideal book for the scientific research community, but is also accessible to Masters and senior undergraduate students.
Food Webs Mpb 50
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Author : Kevin S. McCann
language : en
Publisher: Princeton University Press
Release Date : 2012
Food Webs Mpb 50 written by Kevin S. McCann and has been published by Princeton University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Science categories.
This book synthesizes and reconciles modern and classical perspectives into a general unified theory.
Food Webs
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Author : John C. Moore
language : en
Publisher: Cambridge University Press
Release Date : 2018
Food Webs written by John C. Moore 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 2018 with Business & Economics categories.
This book presents new approaches to studying food webs, using practical and policy examples to demonstrate the theory behind ecosystem management decisions.
Ecological Risk Assessment Issue Papers
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Author : DIANE Publishing Company
language : en
Publisher: DIANE Publishing
Release Date : 1995-07
Ecological Risk Assessment Issue Papers written by DIANE Publishing Company and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995-07 with Law categories.
Provides scientific & technical information that scientists can use along with other materials to develop ecological risk assessment guidance. Highlights important principles & approaches relevant to the ecological risk assessment framework that scientists should consider in preparing guidelines. Covers: biological stressors, ecological recovery, exposures characteristics, & much more. Figures & tables.
Water And Ecological System Response Management And Restoration
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Author : Chunhui Li
language : en
Publisher: Frontiers Media SA
Release Date : 2023-03-31
Water And Ecological System Response Management And Restoration written by Chunhui Li 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 2023-03-31 with Science categories.
Arctic Climate Impact Assessment Scientific Report
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Author : Arctic Climate Impact Assessment
language : en
Publisher: Cambridge University Press
Release Date : 2005-11-07
Arctic Climate Impact Assessment Scientific Report written by Arctic Climate Impact Assessment 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 2005-11-07 with Science categories.
The Arctic is now experiencing some of the most rapid and severe climate change on earth. Over the next 100 years, climate change is expected to accelerate, contributing to major physical, ecological, social, and economic changes, many of which have already begun. Changes in arctic climate will also affect the rest of the world through increased global warming and rising sea levels. Arctic Climate Impact Assessment was prepared by an international team of over 300 scientists, experts, and knowledgeable members of indigenous communities. The report has been thoroughly researched, is fully referenced, and provides the first comprehensive evaluation of arctic climate change, changes in ultraviolet radiation and their impacts for the region and for the world. It is illustrated in full color throughout. The results provided the scientific foundations for the ACIA synthesis report - Impacts of a Warming Arctic - published by Cambridge University Press in 2004.
Dynamic Changes In Marine Ecosystems
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2006-07-26
Dynamic Changes In Marine Ecosystems written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-07-26 with Science categories.
Recent scientific literature has raised many concerns about whether fisheries have caused more extensive changes to marine populations and ecosystems than previously realized or predicted. In many cases, stocks have been exploited far beyond management targets, and new analyses indicate that fishing has harmed other species—including marine mammals, seabirds, sea turtles, and sea grasses—either directly through catch or habitat damage, or indirectly through changes in food-web interactions. At the request of the National Oceanic and Atmospheric Administration, the National Research Council conducted an independent study to weigh the collective evidence for fishery-induced changes to marine ecosystems and the implications of the findings for U.S. fisheries management. Dynamic Changes in Marine Ecosystems provides comprehensive information in regard to these findings.