Boreal Shield Watersheds: Lake Trout Ecosystems in a Changing Environment

by Gunn; John

• ISBN13: 9781566706469
• ISBN10: 1566706467
• Edition: 1st
• Format: Hardcover
• Copyright: 2003-08-27
• Publisher: CRC Press

Summary

Boreal Shield Watersheds: Lake Trout Ecosystems in a Changing Environment brings together the work of a renowned international group of scientists who specialize in aquatic science and environmental management. They explore the functioning of Boreal Shield ecosystems, focusing on the lake trout, the classic coldwater species of northern glaciated lakes, using it as an indicator of environmental change and as a model to measure the effectiveness of management actions.This book demonstrates how boreal waters have served as a crucible for decades of environmental research into the impacts of nutrient additions, trace contaminants, acid rain, climate change, sport fishing, invasive species, and watershed disturbances.The text builds on this substantial research legacy and explores our ability to manage human interactions with ecosystems across the vast Boreal Shield ecozone of North America, and with other important ecosystems worldwide. It also provides models and new methods of assessing the risk to and the durability of ecosystems in relation to local, regional, and global human activities. Maps and descriptions of several important long-term monitoring sites and an atlas describing more than 3,000 lake trout lakes in the region are special components of the book.

Table of Contents

Series statement: Integrative studies in water management and land development	p. v
Foreword by series editor	p. vii
Foreword: An ideal icon	p. ix
Preface: Boreal Shield ecosystems	p. xi
Introduction
Lake trout, the Boreal Shield, and the factors that shape lake trout ecosystems	p. 3
History and evolution of lake trout in Shield lakes: past and future challenges	p. 21
Rehabilitation of lake trout in the Great Lakes: past lessons and future challenges	p. 37
Environmental factors that affect Boreal Shield ecosystems
Land, water, and human activity on Boreal watersheds	p. 59
Impact of new reservoirs	p. 87
Lake trout (Salvelinus namaycush) habitat volumes and boundaries in Canadian Shield lakes	p. 111
The effects of phosphorus and nitrogen on lake trout (Salvelinus namaycush) production and habitat	p. 119
Dissolved organic carbon as a controlling variable in lake trout and other Boreal Shield lakes	p. 133
Mercury contamination of lake trout ecosystems	p. 147
Acidic deposition in the northeastern United States: Sources and inputs, ecosystem effects, and management strategies	p. 159
Biological effects and management reactions
The control of harvest in lake trout sport fisheries on Precambrian Shield lakes	p. 193
Lake trout stocking in small lakes: factors affecting success	p. 219
Species introductions and their impacts in North American Shield lakes	p. 239
Effects of forestry roads on reproductive habitat and exploitation of lake trout	p. 265
Models and issues associated with ecosystem management
Climate change and sustainable lake trout exploitation: predictions from a regional life history model	p. 281
Monitoring the state of the lake trout resource: a landscape approach	p. 293
Calculation of criteria based on lake area and TDS	p. 323
The effect of recruitment variability on estimating survival rates	p. 325
Synthesis
Boreal Shield waters: models and management challenges	p. 331
Long-term monitoring sites on the Boreal Shield	p. 349
Lake trout lakes of the Boreal Shield ecozone of North America	p. 361
Common and scientific names for fish species in selected Boreal Shield lake trout lakes	p. 481
Conversion factors	p. 483
Index	p. 487
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