Download or read book Simulation of Lake Thermal Structure Ice Cover and Fish Habitat in Response to Changing Climate written by Madeline Rosalie Magee and published by . This book was released on 2016 with total page 171 pages. Available in PDF, EPUB and Kindle. Book excerpt: Physical, chemical, and biological properties in lakes are all sensitive to changes in climate, but the interaction and response of these properties to climate changes is not yet fully understood. This dissertation has two main objectives: (1) characterize the role of lake depth and lake surface area on the physical response of water temperature and ice cover to air temperature (AT) and wind speed (WS) changes and (2) determine the response fish habitat to climate-caused changes in the physical parameter of temperature chemical parameter of dissolved oxygen. To fulfill these objectives, a one-dimensional lake hydrodynamic, ice, and water quality model is utilized on three lakes near Madison, WI. Chapter 2 investigates the response of lake water temperatures and stratification to AT increases and WS decreases for three Madison area lakes. Results indicate that surface area is more important than depth when determining the response of water temperature, stratification, and stability and increasing AT and decreasing WS have a cumulative effect for all variables except hypolimnion temperature, where they have opposing influences. Chapter 3 investigates the response of ice cover duration and ice thickness to AT increases for the same three lakes, and results show that lake depth is the greater influence on ice cover response, with shallow lakes being more resilient to changes in AT. Chapter 4 investigates the role of meteorological drivers and water quality drivers on oxythermal habitat of cisco. Results show that summer AT, spring phosphorus load, and spring inflow volume drive habitat loss, but effects of AT increases can be offset by decreases in phosphorus loading. Finally, Chapter 5 develops a novel metric, cumulative oxythermal stress dosage (COSD), to quantify oxythermal habitat of yellow perch in Fish Lake, WI. Results show that COSD is a good predictor of fish declines, COSD values are closely tied to the July -- September AT, and perturbation scenarios identify 3°C AT increase as a possible threshold for yellow perch extirpation.

Download or read book Modeling Ice Cover and Water Temperature of Lake Mendota written by and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The goal of this work is to build lake physical templates, i.e., ice cover, thermal structure, and transport processes through modeling approaches. Knowledge of lake physics can be further used for ecosystem and climate change studies. Specifically, the following two science questions are addressed using the lake physical template developed in this study: (1) How do lake temperate and ice cover vary in response to long-term (~ 100 years) changing climate, and what are physical drivers. (2) At a short-term scale (~ less than 1 year), what is the spatial and temporal variation when lake experiencing natural (e.g. meteorological inputs) and/or manmade (e.g. effluent discharge) disturbances. Both one-dimensional (1D) and three-dimensional (3D) lake hydrodynamic-ice models were developed to have continuous simulations over the course of the year. The study lake of this thesis, on which all the field experiments and model simulations are focused, is Lake Mendota, located in Madison, Wisconsin, USA (43o40'N, 89o24'W). In summary, Chapter 2 presents validation and application of a 1-D hydrodynamic-ice model in simulating a continuous 100-year period (1911-2010) of ice cover and water temperature. Influences of three important drivers (air temperature, wind speed, and water clarity) on ice cover and thermal structure during the past century was investigated. Also, with the knowledge of lake responses to the past climatic conditions, some suggestions about how the lake might respond to changes in these three important drivers associated with future climate changes were presented. In Chapter 3, the 1D-version ice module was extended to a 3D framework and coupled with an existing three dimensional (3D) hydrodynamic model. The coupled 3D hydrodynamic-ice model was applied to simulate the temporal and spatial variations of ice cover. Besides, some features of under-ice hydrodynamics were discussed. In Chapter 4, modeling transport of buoyant effluent plume during the summer stratified season was presented. In closing, conclusions and some recommendations for future study are summarized in Chapter 5.

Download or read book The Response of Lake Thermal Stratification to Climatic Conditions and Effects on Fish Growth written by Jacquelynne R. King and published by . This book was released on 1997 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Climate change is expected to alter aspects of lake thermal stratification such as onset of stratification, epilimnion and hypolimnion temperatures and thermocline depth. Climate change effects on fish will likely be mediated through alterations to their thermal habitat. The long-term water temperature and meteorology data sets for South Bay of Lake Huron, Ontario, (1955-92) and for Lake Opeongo, Ontario, (1958-96) offer an empirical record of the historical covariations between climatic conditions, lake stratification patterns and fish growth. Generally, in warmer years the thermal structures of these lakes are characterized by an earlier onset of stratification, a warmer spilimnion, a shallower thermocline and a larger temperature difference between upper and bottom layers. These stratification patterns are associated with increased growth in smallmouth bass Micropterus dolomieui (warm water species), and in rainbow smelt Osmerdus mordax and yellow perch Perca flavescens (cool water species) and with reduced growth in lake trout Salvelinus namaycush (cold water species). The historical covariations between climatic conditions and stratification patterns between stratification patterns and fish growth suggest that climatic conditions filter to fish thorough the aspect of their thermal environment that is related to their behaviour or life history. The historical covariations provide patterns of association from which the response of thermal stratification and fish growth to climate change are forecast.

Download or read book Modelling Pumped storage Effects on Thermal Structure Ice Cover and Water Quality of Lakes and Reservoirs in a Changing Climate written by Ulrike Kobler and published by . This book was released on 2019 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mots-clés de l'auteur: Reservoir modelling; recommissioning pumped-storage operations; hydropower; lake ice; lake stratification; lake stability; weather generator; climate scenarios; CE-QUAL-W2; GLM; Simstrat; MyLake.

Download or read book Freezing of Lakes and the Evolution of Their Ice Cover written by Matti Leppäranta and published by Springer. This book was released on 2024-07-06 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book updates the first edition for the status of knowledge in the physics of lake ice and the interactions between the ice cover and the liquid water underneath. Since the first edition was written in 2013, there has been a lot of progress in the field, in particular concerning environmental questions and the impact of climate change. Life conditions in ice-covered lakes and practical matters are now brought more into the picture so that the revision also properly serves as a handbook for applications. The author has worked widely with boreal lakes, polar lakes and Central Asian lakes that provides a wide geographical spectrum. Chapter 1 gives a brief overview and presents the research fields. The second chapter contains the classification of ice-covered lakes and observation techniques, especially remote sensing. In Chapter 3, the structure and properties of lake ice are presented including optics and geochemistry. Ice growth and melting are treated in Chapter 4, while the following chapter focuses on ice mechanics with applications to traffic on ice and ice loads. Chapter 6 goes into the exotic environment of pro-glacial lakes. Chapter 7 contains the stratification and circulation of the water body beneath lake ice, Chapter 8 presents the winter ecology of freezing lakes and discusses the lake ice interface toward the society, and Chapter 9 summarizes the climate change impact on lake ice seasons. The book ends into a brief closing chapter and list of references. Research problems for student learning are listed throughout the book. Annexes are included to provide numerical data of constants and standard formulae to help practical calculations and student tasks. Lake ice closely interacts with human living conditions, but people have learnt to live with that and to utilize the ice. In the present time this is true for on-ice traffic and recreation activities. Ice fishing has become a widely enjoyed hobby, and winter sports such as skiing, skating,and ice sailing are popular activities on frozen lakes. The lake ice response to eventual climate warming would appear as a shortening of the ice season due to the increasing air temperature and also as changing of the quality of the ice seasons via changes in ice thickness and structure. The book gives the whole story of lake ice into a single volume. The second, revised edition updates the content based on recent progress in winter limnology and ice physics research and applications. The author has contributed to lake ice research since the 1980s. In particular, his topics have been lake ice structure and thermodynamics, light transfer in ice and snow, ice mechanics in large lakes, and lake ice climatology. Mathematical modeling of ice growth, drift, and decay are covered in this research.

Download or read book The Impact of Climate Change on European Lakes written by Glen George and published by Springer Science & Business Media. This book was released on 2009-11-27 with total page 517 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this book, scientists from eleven countries summarize the results of an EU project (CLIME) that explored the effects of observed and projected changes in the climate on the dynamics of lakes in Northern, Western and Central Europe. Historical measurements from eighteen sites were used to compare the seasonal dynamics of the lakes and to assess their sensitivity to local, regional and global-scale changes in the weather. Simulations using a common set of water quality models, perturbed by six climate-change scenarios, were then used to assess the uncertainties associated with the projected changes in the climate. The book includes chapters on the phenology and modelling of lake ice, the supply and recycling of nitrogen and phosphorus, the flux of dissolved organic carbon and the growth and the seasonal succession of phytoplankton. There are also chapters on the coherent responses of lakes to changes in the circulation of the atmosphere, the development of a web-based Decision Support System and the implications of climate change for the Water Framework Directive.

Download or read book Why Study Lakes written by Herbert S. Garn and published by . This book was released on 2003 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Climate Change Impacts on Freshwater Ecosystems written by Martin Kernan and published by John Wiley & Sons. This book was released on 2011-02-14 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book The Ocean and Cryosphere in a Changing Climate written by Intergovernmental Panel on Climate Change (IPCC) and published by Cambridge University Press. This book was released on 2022-04-30 with total page 755 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Intergovernmental Panel on Climate Change (IPCC) is the leading international body for assessing the science related to climate change. It provides policymakers with regular assessments of the scientific basis of human-induced climate change, its impacts and future risks, and options for adaptation and mitigation. This IPCC Special Report on the Ocean and Cryosphere in a Changing Climate is the most comprehensive and up-to-date assessment of the observed and projected changes to the ocean and cryosphere and their associated impacts and risks, with a focus on resilience, risk management response options, and adaptation measures, considering both their potential and limitations. It brings together knowledge on physical and biogeochemical changes, the interplay with ecosystem changes, and the implications for human communities. It serves policymakers, decision makers, stakeholders, and all interested parties with unbiased, up-to-date, policy-relevant information. This title is also available as Open Access on Cambridge Core.

Download or read book Physics and Chemistry of Lakes written by Abraham Lerman and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 345 pages. Available in PDF, EPUB and Kindle. Book excerpt: A lake, as a body of water, is in continuous interaction with the rocks and soils in its drainage basin, the atmosphere, and surface and groundwaters. Human industrial and agricultural activities introduce new inputs and processes into lake systems. This volume is a selection of ten contributions dealing with diverse aspects of lake systems, including such subjects as the geological controls of lake basins and their histories, mixing and circulation patterns in lakes, gaseous exchange between the water and atmosphere, and human input to lakes through atmospheric precipitation and surficial runoff. This work was written with a dual goal in mind: to serve as a textbook and to provide professionals with in-depth expositions and discussions of the more important aspects of lake systems.

Download or read book Water Temperature Characteristics of Lakes Subjected to Climate Change written by Midhat Hondzo and published by . This book was released on 1992 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: A deterministic, one dimensional, unsteady lake water temperature model was modified and validated to simulate the seasonal (spring to fall) temperature statification structure over a wide range of lake morphometries, trophic and meteorological conditions. Model coefficients related to hypolimnetic eddy diffusivity, light attenuation, wind sheltering, ad convective heat transfer were generalized using theoretical and empirical extensions. Propagation of uncertainty in the lake temperature model was studied using a vector state-space method. The output uncertainty was defined as the result of deviations of meteorological variables from their mean values. Surface water temperatures were affected by uncertain meteorological forcing. Air temperture and dew point temperature fluctuations had significant effects on lake temperature uncertainty. The method presents a useful alternative for studying long-term averages and variability of the water temperature structure in lakes due to variable meteorological forcing. The lake water temperature model was linked to a daily meteorological data base to simulate daily water temperature in several specific lakes as well as 27 lake classes characteristic for the north central US. Case studies of lake water temperature and stratification response to variable climate were made in a particulary warm year (1988) and a more normal one (1971). A regional analysis was conducted for 27 lake classes over a period of twenty-five years (1955-1979). Output from a global climate model (GISS) was used to modify te meteorological data base to account for a doubling of atmospheric CO2. The simulations predict that after climate change: 1) epilimnetic water temperatures will be higher but will increase less than air temperature, 2) hypolimnetic temperatures in seasonally stratified dimictic lakes will be largely unchanged and in some cases lower than at present, 3) evaporative water loss will be increased by as much as 300 mm for the open water season, 4) onset of stratification will occur earlier and overturn will occur later in the season, and 5) overall lake stability will become greater in spring and sumer.

Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1991 with total page 808 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature Relationships of Great Lakes Fishes written by Donald A. Wismer and published by . This book was released on 1987 with total page 212 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Freshwater Fisheries Ecology written by John F. Craig and published by John Wiley & Sons. This book was released on 2016-01-12 with total page 920 pages. Available in PDF, EPUB and Kindle. Book excerpt: Inland fisheries are vital for the livelihoods and food resources of humans worldwide but their importance is underestimated, probably because large numbers of small, local operators are involved. Freshwater Fisheries Ecology defines what we have globally, what we are going to lose and mitigate for, and what, given the right tools, we can save. To estimate potential production, the dynamics of freshwater ecosystems (rivers, lakes and estuaries) need to be understood. These dynamics are diverse, as are the earths freshwater fisheries resources (from boreal to tropical regions), and these influence how fisheries are both utilized and abused. Three main types of fisheries are illustrated within the book: artisanal, commercial and recreational, and the tools which have evolved for fisheries governance and management, including assessment methods, are described. The book also covers in detail fisheries development, providing information on improving fisheries through environmental and habitat evaluation, enhancement and rehabilitation, aquaculture, genetically modified fishes and sustainability. The book thoroughly reviews the negative impacts on fisheries including excessive harvesting, climate change, toxicology, impoundments, barriers and abstractions, non-native species and eutrophication. Finally, key areas of future research are outlined. Freshwater Fisheries Ecology is truly a landmark publication, containing contributions from over 100 leading experts and supported by the Fisheries Society of the British Isles. The global approach makes this book essential reading for fish biologists, fisheries scientists and ecologists and upper level students in these disciplines. Libraries in all universities and research establishments where biological and fisheries sciences are studied and taught should have multiple copies of this hugely valuable resource. About the Editor John Craig is Editor-in-Chief of the Journal of Fish Biology and has an enormous range of expertise and a wealth of knowledge of freshwater fishes and their ecology, having studied them around the globe, including in Asia, North America, Africa, the Middle East and Europe. His particular interests have been in population dynamics and life history strategies. He is a Fellow of the Linnean Society of London and the Royal Society of Biology.

Download or read book The Potential Effects of Global Climate Change on the United States written by Joel B. Smith and published by . This book was released on 1989 with total page 472 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Climate Change on North temperate Lake Trout Salvelinus Namaycush Populations written by Matthew Michael Guzzo and published by . This book was released on 2018 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aquatic ecosystems are expected to undergo major changes in response to climate change. Lake trout (Salvelinus namaycush) is predatory fish found in oligotrophic lakes of Canada and is considered a sentinel species for studying the impacts of warming on lakes due to its requirement for cold water. The objective of this thesis was to determine the impacts of warming on north-temperate lake trout populations. In Chapters 1-3, I used long-term datasets collected from small lakes near the southern extent of lake trout's distribution to determine how warming impacts thermal habitat and how these habitat changes cascade to alter the behaviour and growth of individuals and ultimately population-level characteristics of this species. I found that over a period when annual air temperatures increased by ≈ 2 ̊C there was a 14-day reduction, on average, in the ice-free season and an equal extension of summer - a period when littoral zone temperatures exceed the metabolic optimal for lake trout. Years with shorter springs and longer summers negatively impacts lake trout by limiting access to littoral prey, resulting in slower growth and reduced condition. I also found that the growth and size structure of an unexploited lake trout population shifted during this warming period; the population is now made up of a larger number of small individuals with lower condition and reduced life span. Lake trout also began to mature at younger ages and had reduced maximum size. Results suggest these changes in size-structure were not due to changes in the amount or size of prey fish or density-dependence, as the biomass of adult lake trout remained constant over time. In Chapter 4, I collected data from a northern lake to describe the seasonal ecology of this northern lake trout population and predict how warming might alter growth. I found that lake trout displayed similar seasonal cycles in habitat use and diet as in southern lakes, but that the use of littoral habitat was far reduced, likely due to the presence of pelagic prey fish and northern pike (Esox lucius) in this lake. Lastly, bioenergetic simulations indicated that the under a 2 ̊C warming scenario, the growth and consumption of lake trout would increase in this northern lake assuming prey was readily available.

Download or read book Potential Climate Change Effects on Great Lakes Hydrodynamics and Water Quality written by David C. L. Lam and published by Amer Society of Civil Engineers. This book was released on 1999-01-01 with total page 232 pages. Available in PDF, EPUB and Kindle. Book excerpt: Provides a review of the climate change effects on lake hydrodynamics and water quality. This title provides case studies to illustrate the advancement in modeling research on lake hydrodynamics, thermal stratification, pollutant transport and water quality by highlighting the climate change aspects in the application of these techniques.