The Lake Charr Salvelinus namaycush: Biology, Ecology, Distribution, and Management

The Lake Charr Salvelinus namaycush: Biology, Ecology, Distribution, and Management PDF Author: Andrew M. Muir
Publisher: Springer Nature
ISBN: 3030622592
Category : Science
Languages : en
Pages : 526

Book Description
The lake charr Salvelinus namaycush is a ubiquitous member of cold-water lake ecosystems in previously glaciated regions of northern continental U.S., Alaska, and Canada that often support important commercial, recreational, and subsistence fisheries. The lake charr differs from other charrs by its large size, longevity, iteroparity, top-predator specialization, reduced sexual dimorphism, prevalence of lacustrine spawning, and use of deepwater habitat. The species is remarkably variable in phenotype, physiology, and life history, some of which is reflected in its ecology and genetics, with as many as four morphs or ecotypes co-occurring in a single lake. The lake charr is often the top predator in these systems, but is highly adaptable trophically, and is frequently planktivorous in small lakes. The lake charr by their name highlights their common habitat, lakes both large and small, but often frequents rivers and occasionally moves into the Arctic Ocean. Movement and behaviour of lake charr are motivated by access to cool, well-oxygenated water, foraging opportunities, predator avoidance, and reproduction. Owing to their broad distribution and trophic level, the lake charr serves as a sentinel of anthropogenic change. This volume will provide an up-to-date summary of what is currently known about lake charr from distribution to genetics to physiology to ecology. The book provides a compilation and synthesis of available information on the lake charr, beginning with an updated distribution and a revised treatment of the paleoecology of the species. Understanding of ecological and genetic diversity and movement and behaviour of the species has advanced remarkably since the last major synthesis on the species over 40 years ago. Mid-sections of the book provide detailed accounts of the biology and life history of the species, and later sections are devoted to threats to conservation and fishery management practices used to ensure sustainability. A new standard lake charr-specific terminology is also presented. The book will be a valuable reference text for biologists around the world, ecologists, and fishery managers, and of interest to the angling public.

Climate Change and Northern Fish Populations

Climate Change and Northern Fish Populations PDF Author: National Research Council Canada
Publisher: NRC Research Press
ISBN: 9780660157801
Category : Nature
Languages : en
Pages : 756

Book Description
These documents summarize some of the recent studies of the relationships among climate, the aquatic environment, and the dynamics of fish populations. The studies are mostly from the North Pacific ocean, but there are reports of investigations from the North Atlatic Ocean and from fresh water. Various papers include numerous examples of the relationships between fish abundance trends and the environment.

Temperature Adaptation in a Changing Climate

Temperature Adaptation in a Changing Climate PDF Author: Kenneth B. Storey
Publisher: CABI
ISBN: 1845938224
Category : Technology & Engineering
Languages : en
Pages : 247

Book Description
Cold adaptation is a much neglected field in the minds of climate change researchers and policy makers. However, increasing fluctuations in temperature means that the risk of cold stress will pose an increasing threat to both wild and cultivated plants and animals, with frost injury expected to cause devastating damage to crops on an increasingly large scale. Conversely, species already adapted to cold seasonality are declining in numbers and threatening both wildlife and human food sources. Thus, improving shared knowledge of the biological mechanisms of cold adaptation in plants and animals will help prevent major losses of crops and genetic resources in the future. This book is the first to focus on the mechanistic similarities between species in their responses to cold in a multi-organism approach that addresses the challenges and impacts of climate change on cold adaptation in micro-organisms (including pathogens), invertebrates, economically and scientifically important plants and vertebrates in both terrestrial and marine environments. The book concludes with a focus on the interactions between organisms, exploring common mechanisms in cold adaptation and dormancy.

The Potential Effects of Global Climate Change on the United States

The Potential Effects of Global Climate Change on the United States PDF Author:
Publisher:
ISBN:
Category : Climatic changes
Languages : en
Pages : 204

Book Description


Canadian Journal of Fisheries and Aquatic Sciences

Canadian Journal of Fisheries and Aquatic Sciences PDF Author:
Publisher:
ISBN:
Category : Aquatic sciences
Languages : en
Pages : 738

Book Description


Waters in Peril

Waters in Peril PDF Author: Leah Bendell-Young
Publisher: Springer Science & Business Media
ISBN: 1461514932
Category : Science
Languages : en
Pages : 276

Book Description
Who Speaks for the Oceans? The question has been asked a lot in recent years - just who is looking out for our oceans? Covering over seventy percent of the earth's surface it is the world's largest common property resource,jojntly owned by over six billion humans. It is the foundation for life on earth as we know it. Over the years, many people have spoken about various aspects of our ocean environments and they have spoken to different audiences in many different ways. For many in the public realm, Jacques Cousteau spoke for the ocean. Since his passing, no single voice with the sallle public identity or recognition has emerged. Certainly the many governments bordering our oceans cannot agree on common principles or issues of ocean use and management. We might be tempted think that we do not have an ocean spokesperson or champion, but we would be wrong. Today, the rapidly growing number of scientists working hard to expand our under standing of our ocean realm are the ocean voices we should listen to. At the same time as our scientists advance their understanding of the oceans, we all need to advance our abilities and commitment to communicate on behalf of the oceans with broader and broader audiences who need to be aware of where things stand. Often called "the last great frontier", earth's oceans are vast, widely varied, and are hard to get to, arid into, to do the research we need done.

Climate Change Impacts on Freshwater Ecosystems

Climate Change Impacts on Freshwater Ecosystems PDF Author: Martin Kernan
Publisher: John Wiley & Sons
ISBN: 1444391275
Category : Science
Languages : en
Pages : 470

Book Description
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.

Selected Water Resources Abstracts

Selected Water Resources Abstracts PDF Author:
Publisher:
ISBN:
Category : Water
Languages : en
Pages : 808

Book Description


Regional Projections of Climate Change Effects on Ontario Lake Trout (Salvelinus Namaycush) Populations

Regional Projections of Climate Change Effects on Ontario Lake Trout (Salvelinus Namaycush) Populations PDF Author: Charles Kenneth Minns
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 20

Book Description
Acknowledgements -- Introduction -- Methods -- Future Ontario Climates -- Morphometry of Ontario Lakes and Presence/Absence of Lake Trout -- Estimating Lake Stratification Patterns -- Thermal Specialization of Lake Trout -- Assessment of Impacts of Climate Change -- Results -- Conclusions -- References.

Ecology, behaviour and conservation of the charrs, genus Salvelinus

Ecology, behaviour and conservation of the charrs, genus Salvelinus PDF Author: Pierre Magnan
Publisher: Springer Science & Business Media
ISBN: 9401713529
Category : Science
Languages : en
Pages : 345

Book Description
Salvelinus species are one of the most thoroughly studied groups of fishes. Many reasons explain this intense interest in charr biology. Charrs have a Holarctic distribution encompassing many Asian, North American, and European countries and occupy diverse marine and freshwater environments. Furthermore, the current distribution of charr includes areas that were directly influenced by climate and topographic change associated with the many Pleistocene glaciations. Undoubtedly, these conditions have promoted much of the tremendous morphological, ecological, and genetic variability and plasticity within Salvelinus species and they make charr very good models to study evolutionary processes 'in action'. Many charr species also exhibit demographic characteristics such as slow growth, late maturity, and life in extreme environments, that may increase their susceptibility to extinction from habitat changes and overexploitation, especially in depauperate aquatic habitats. This vulnerability makes understanding their biology of great relevance to biodiversity and conservation. Finally, charr are of great cultural, commercial, and recreational significance to many communities, and their intimate linkage with human societies has stimulated much interest in this enigmatic genus. This volume comprises a selection of papers presented at the fourth International Charr Symposium held in Trois-Rivières (Québec, Canada), from 26 June to 1 July 2000. It includes 31 papers on ecological interactions and behaviour, trophic polymorphism, movement and migration, ecophysiology and evolutionary genetics, ecological parasitology, environmental stress and conservation. These studies cannot cover all recent developments in the ecology, behaviour and conservation of Salvelinus species, but collecting them into a special volume should bring attention to current research on this important genus and stimulate further work on Salvelinus species.