Table of Contents

I. Introduction

II. Project Contacts

III. Physical and Chemical Data

IV. Phytoplankton Data

V. Phytoplankton Photos

VI. Zooplankton Data

VII. Zooplankton Photos

VIII. Fish Data

IX. Project Summary

X. Sources

XI. View complete report (HTML)

Figures and Tables

Figure 2: Conceptual Model of the Crater Lake Ecosystem

Figure 3: Details of the lake aspects of the conceptual model shown in figure 2.

Figure 4: Secchi Disk Measurements in Crater Lake by month from 1982 to 1999.

Figure 5: Depth profiles of selected phytoplankton taxa. Data presented as averages per depth. Bars refer to 1 standard deviation.

Figure 6: Depth profiles of chlorophyll for selected months. Data presented as averages per depth. Bars represent 1 standard deviation.

Figure 7: Depth profiles of primary production for selected months. Data presented as averages per depth. Bars represent 1 standard deviation.

Figure 8: Depth profiles of selected zooplankton taxa. Data presented as averages per depth. Bars represent 1 standard deviation.

Figure 9: Densities of Daphnia pulicaria integrated to 200 m from 1985 to 1999.