Long-term Limnological Research and Monitoring at Crater Lake, Oregon

A benchmark study of a deep and exceptionally clear montane caldera lake

  • G. L. Larson
  • R. Collier
  • M. W. Buktenica

Part of the Developments in Hydrobiology book series (DIHY, volume 191)

Table of contents

  1. Front Matter
    Pages I-V
  2. Gary L. Larson, Robert Collier, Mark W. Buktenica
    Pages 1-11
  3. Manuel Nathenson, Charles R. Bacon, David W. Ramsey
    Pages 13-27
  4. G. B. Crawford, R. W. Collier
    Pages 47-68
  5. Gary L. Larson, Robert L. Hoffman, David C. McIntire, Mark W. Buktenica, Scott F. Girdner
    Pages 69-84
  6. Daniel R. Oros, Robert W. Collier, Bernd R. T. Simoneit
    Pages 85-105
  7. B. R. Hargreaves, S. F. Girdner, M. W. Buktenica, R. W. Collier, E. Urbach, G. L. Larson
    Pages 107-140
  8. Gary L. Larson, Robert L. Hoffman, Bruce R. Hargreaves, Robert W. Collier
    Pages 141-148
  9. Alan W. Groeger
    Pages 205-216
  10. Gary L. Larson, C. David McIntire, Mark W. Buktenica, Scott F. Girdner, Robert E. Truitt
    Pages 217-233
  11. Katja Fennel, Robert Collier, Gary Larson, Greg Crawford, Emmanuel Boss
    Pages 265-280

About this book


Crater Lake is located in the caldera of Mount Mazama in Crater Lake National Park, Oregon. The lake has a surface area of about 53 km2 at an elevation of 1882 m and a maximum depth of 594 m – seventh deepest in the world. Limited studies of this ultraoligotrophic lake conducted between 1896 and 1981, lead to a 10-year limnological study to evaluate any potential degradation of water quality. No long-term variations in water quality were observed that could be attributed to anthropogenic activity. Building on the success of this study, a permanent limnological program has been established with a long-term monitoring program to insure a reliable data base for use in the future. Of equal importance, this program serves as a research platform to develop and communicate to the public a better understanding of the coupled biological, physical, and geochemical processes in the lake and its surrounding environment.

This special volume represents our current state of knowledge of the status of this pristine ecosystem including its special optical properties, algal nutrient limitations, pelagic bacteria, and models of the inter-relationships of thermal properties, nutrients, phytoplankton, deep-water mixing, and water budgets.


Caldera Lake Crater Lake Limnology Oligotrophic lake ecosystem environment phytoplankton plankton

Editors and affiliations

  • G. L. Larson
    • 1
  • R. Collier
    • 2
  • M. W. Buktenica
    • 3
  1. 1.USGS Forest and Rangeland Ecosystem Science CenterCorvallisUSA
  2. 2.College of Oceanic and Atmospheric SciencesOregon State UniversityCorvallisUSA
  3. 3.U. S. National Park ServiceCrater Lake National ParkCrater LakeUSA

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