Variability of Water Storage and Instream Temperature in Beaded Arctic Streams
Variability of Water Storage and Instream Temperature in Beaded Arctic Streams

Author: Madeline F. Merck

Publisher:

Published: 2011

Total Pages: 96

ISBN-13:

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The purpose of this study is to investigate variation in water export and instream temperatures throughout the open water season in a beaded Arctic stream, consisting of small pools connected by shallow chutes. The goals are to better understand heat and mass movement through these systems, how this may impact chemical and biological processes, and the resulting shifts with changes in climate. This is accomplished by first examining the extent and variability of water storage and export through qualitative analysis of observational data. Further, heat fate and transport is examined through development of an instream temperature model. The model formulation, a simple approach to model calibration and validation, and information regarding residence and characteristic times of different pool layers are presented. Using temperatures measured at high spatial resolution within the pools and surrounding bed sediments as well as other supporting data (e.g., instream flow, specific conductivity, weather data, and bathymetry), various types of storage within the pools, banks, and marshy areas within iv the riparian zone, including subsurface flow paths that connect the pools, were found. Additionally, data illustrated that some pools will stay stratified during higher flow periods under certain weather conditions. Through modeling efforts, the dominant heat sources were found to vary between stratified layers. It was also found that potential increases in thaw depths surrounding these pools can shift stratification and mixing patterns. These shifts can further influence mass export dynamics and instream water quality. Given the amount and different types of storage within these systems and the influence of stratification patterns on the residence times in the pools, Imnavait Basin and similar beaded Arctic watersheds will likely experience delayed export of nutrients that are limiting in most Arctic systems.

Stream Ecosystems in a Changing Environment
Stream Ecosystems in a Changing Environment

Author: Jeremy B. Jones

Publisher: Elsevier

Published: 2016-07-07

Total Pages: 566

ISBN-13: 0124059198

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Stream Ecosystems in a Changing Environment synthesizes the current understanding of stream ecosystem ecology, emphasizing nutrient cycling and carbon dynamics, and providing a forward-looking perspective regarding the response of stream ecosystems to environmental change. Each chapter includes a section focusing on anticipated and ongoing dynamics in stream ecosystems in a changing environment, along with hypotheses regarding controls on stream ecosystem functioning. The book, with its innovative sections, provides a bridge between papers published in peer-reviewed scientific journals and the findings of researchers in new areas of study. - Presents a forward-looking perspective regarding the response of stream ecosystems to environmental change - Provides a synthesis of the latest findings on stream ecosystems ecology in one concise volume - Includes thought exercises and discussion activities throughout, providing valuable tools for learning - Offers conceptual models and hypotheses to stimulate conversation and advance research

Methods in Stream Ecology
Methods in Stream Ecology

Author: F. Richard Hauer

Publisher: Academic Press

Published: 2011-04-27

Total Pages: 894

ISBN-13: 0080547435

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Methods in Stream Ecology, Second Edition, provides a complete series of field and laboratory protocols in stream ecology that are ideal for teaching or conducting research. This updated edition reflects recent advances in the technology associated with ecological assessment of streams, including remote sensing. In addition, the relationship between stream flow and alluviation has been added, and a new chapter on riparian zones is also included. The book features exercises in each chapter; detailed instructions, illustrations, formulae, and data sheets for in-field research for students; and taxanomic keys to common stream invertebrates and algae. With a student-friendly price, this book is key for all students and researchers in stream and freshwater ecology, freshwater biology, marine ecology, and river ecology. This text is also supportive as a supplementary text for courses in watershed ecology/science, hydrology, fluvial geomorphology, and landscape ecology. - Exercises in each chapter - Detailed instructions, illustrations, formulae, and data sheets for in-field research for students - Taxanomic keys to common stream invertebrates and algae - Link from Chapter 22: FISH COMMUNITY COMPOSITION to an interactive program for assessing and modeling fish numbers

Arctic Ecology
Arctic Ecology

Author: David N. Thomas

Publisher: John Wiley & Sons

Published: 2021-01-26

Total Pages: 468

ISBN-13: 1118846540

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The Arctic is often portrayed as being isolated, but the reality is that the connectivity with the rest of the planet is huge, be it through weather patterns, global ocean circulation, and large-scale migration patterns to name but a few. There is a huge amount of public interest in the ‘changing Arctic’, especially in terms of the rapid changes taking place in ecosystems and exploitation of resources. There can be no doubt that the Arctic is at the forefront of the international environmental science agenda, both from a scientific aspect, and also from a policy/environmental management perspective. This book aims to stimulate a wide audience to think about the Arctic by highlighting the remarkable breadth of what it means to study its ecology. Arctic Ecology seeks to systematically introduce the diverse array of ecologies within the Arctic region. As the Arctic rapidly changes, understanding the fundamental ecology underpinning the Arctic is paramount to understanding the consequences of what such change will inevitably bring about. Arctic Ecology is designed to provide graduate students of environmental science, ecology and climate change with a source where Arctic ecology is addressed specifically, with issues due to climate change clearly discussed. It will also be of use to policy-makers, researchers and international agencies who are focusing on ecological issues and effects of global climate change in the Arctic. About the Editor David N. Thomas is Professor of Arctic Ecosystem Research in the Faculty of Biological and Environmental Sciences, University of Helsinki. Previously he spent 24 years in the School of Ocean Sciences, Bangor University, Wales. He studies marine systems, with a particular emphasis on sea ice and land-coast interactions in the Arctic and Southern Oceans as well as the Baltic Sea. He also edited a related book: Sea Ice, 3rd Edition (2017), which is also published by Wiley-Blackwell.

Permafrost Hydrology
Permafrost Hydrology

Author: Ming-ko Woo

Publisher: Springer Science & Business Media

Published: 2012-04-14

Total Pages: 572

ISBN-13: 3642234623

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Permafrost Hydrology systematically elucidates the roles of seasonally and perennially frozen ground on the distribution, storage and flow of water. Cold regions of the World are subject to mounting development which significantly affects the physical environment. Climate change, natural or human-induced, reinforces the impacts. Knowledge of surface and ground water processes operating in permafrost terrain is fundamental to planning, management and conservation. This book is an indispensable reference for libraries and researchers, an information source for practitioners, and a valuable text for training the next generations of cold region scientists and engineers.

Permafrost
Permafrost

Author: T. Neil Davis

Publisher:

Published: 2001

Total Pages: 404

ISBN-13:

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Intended for a broad audience, this book is suitable for the science-minded layman and motivated students; it belongs in the library of anyone with more than a passing interest in the colder regions of the world. Students, permafrost specialists, and professionals in earth and environmental sciences will find most of the necessary and detailed mathematical material contained in the appendices, where it is accessible but not alarming to the less technically minded."--BOOK JACKET.

Freshwater Algae
Freshwater Algae

Author: Edward G. Bellinger

Publisher: John Wiley & Sons

Published: 2011-09-20

Total Pages: 379

ISBN-13: 1119964326

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Freshwater Algae: Identification and Use as Bioindicators provides a comprehensive guide to temperate freshwater algae, with additional information on key species in relation to environmental characteristics and implications for aquatic management. The book uniquely combines practical material on techniques and water quality management with basic algal taxonomy and the role of algae as bioindicators. Freshwater Algae: Identification and Use as Bioindicators is divided into two parts. Part I describes techniques for the sampling, measuring and observation of algae and then looks at the role of algae as bioindicators and the implications for aquatic management. Part II provides the identification of major genera and 250 important species. Well illustrated with numerous original illustrations and photographs, this reference work is essential reading for all practitioners and researchers concerned with assessing and managing the aquatic environment.

The Lost Seal
The Lost Seal

Author: Diane McKnight

Publisher: Rowman & Littlefield

Published: 2006-07-01

Total Pages: 40

ISBN-13: 1461743656

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Research scientists camped at the desolate McMurdo Dry Valleys of Antarctica studying the local lakes and streams are one day surprised to find a young Weddell seal in their midst. Tired and hungry, and perhaps lured by the smell of the group's cheeseburger dinner, the young male is a long way from his natural habitat on the sea ice of McMurdo Sound. Bound by the Antarctic Conservation Act, the scientists know they cannot provide it with sustenance, but instead contact seal scientists who, after some thought, decide they can provide assistance so the seal can return to the sea ice. The seal gets the ride of its life back to its natural habitat, and the scientists name one of their newly found streams to commemorate their unlikely campmate. Published in cooperation with the Long-Term Ecological Research Network, which is funded by the National Science Foundation.