Cover

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pp. 1-1

Title Page, Copyright

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pp. 2-7

Table of Contents

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pp. viii-13

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Preface

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pp. xiv-17

Mirror Lake is a small lake situated at the lower end of the Hubbard Brook Valley in the White Mountains of New Hampshire, USA. Gene Likens, with his colleagues, then of Dartmouth College and Cornell University, and with his students, began limnological studies of the lake in the early 1960s. The work involved studying the physical, chemical, ...

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1. A Limnological Introduction to Mirror Lake

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pp. 1-22

Mirror Lake is a clear-water lake in the Hubbard Brook Valley of the White Mountains of New Hampshire. This beautiful lake has had several names, including Hobart’s Pond, McLellan’s Pond, Jobert’s Pond, Hubbard’s Pond, and Tannery Pond, since white settlers colonized the area in the middle 1700s. But on a crisp, clear morning...

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2. Hydrologic Processes and the Water Budget

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pp. 23-68

Mirror Lake was selected for intensive study of its hydrology following a search in the major, natural lake regions of the United States to establish long-term studies of the interaction of lakes and ground water. Mirror Lake represents a typical mountain lake in a humid continental climate. The original focus of the long-term lake studies was on ground water because it historically had received little attention...

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3. Nutrient Dynamics

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pp. 69-204

Long-term studies of the Hubbard Brook Experimental Forest water-sheds near Mirror Lake have provided quantitative understanding about the importance of dissolved substance flux across ecosystem boundaries. Issues addressed by these well-known studies include the effect of regional atmospheric deposition; the effects of local watershed disturbances, such ...

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4. Evaluation of Methods and Uncertainties in the Water Budget

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pp. 205-224

Measurements of the volumes of water moving to, stored in, and moving from a lake are subject to some degree of uncertainty. The uncertainties in measuring water flows result from less than optimal placement of field instruments, the limited accuracy and reliability of field instruments, missing data, and the challenge of a really interpreting point data from field mea-...

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5. Evaluation of Methods and Uncertainties in the Budgets

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pp. 225-300

Comparison of chemical mass input and output associated with hydro-logic processes alone is not a complete mass balance; it merely sets the stage for developing hypotheses concerning changes that might be expected to occur in storage or biological and gaseous fluxes, based on the comparison. Such hypotheses are tested by comparing the difference ...

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6. Mirror Lake: Past, Present, and Future

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pp. 301-328

Mirror Lake is similar in many ways to a vast number of small to medium-sized lakes in the northeastern United States and the Canadian Shield of southeastern Canada. These lakes historically have clear to lightly stained water and are relatively nutrient poor, because of the slowly weathering bedrock of their drainage basins. Recently, these lakes have been affected ...

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7. Summary and Conclusions

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pp. 329-334

Being a small lake in a mountainous setting, Mirror Lake has a highly dynamic interaction with the hydrologic cycle. The streams tributary to the lake drain steep mountainsides, so discharge into the lake responds rapidly to precipitation, especially rain, falling on the watershed. At the same time, when the elevation of the lake surface is near the elevation of ...

Index

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pp. 335-377

Further Reading, Production Notes

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pp. 378-385