Yes, there are shrimp in Lake Tahoe. Specifically, the invasive species known as Mysis shrimp, also referred to as opossum shrimp, were introduced into the lake in the 1960s as a food source for native trout. These tiny crustaceans, measuring less than an inch long, have a lifespan of one to two years and reproduce rapidly, leading to a massive population explosion in the lake.
The Impact of Mysis Shrimp on Lake Tahoe’s Clarity
The Mysis shrimp have been identified as a major cause of the decline in Lake Tahoe’s water clarity. They feed on native zooplankton, which historically helped keep the lake blue and clear. As the shrimp population grew, the zooplankton population declined, leading to a decrease in water clarity.
Efforts to Control the Mysis Shrimp Population
Researchers from the UC Davis Tahoe Environmental Research Center have been working to find effective methods to remove the Mysis shrimp from the lake. They have conducted pilot projects to establish baseline data and determine the efficiency needed to make a significant impact on the shrimp population. The goal is to increase the lake’s clarity by reducing the shrimp population, which could potentially “climate proof” the lake’s clarity.
Current Status of the Mysis Shrimp Population
Recent reports indicate that the shrimp population is dying off, allowing the zooplankton population to rebound and contributing to improved water clarity in Lake Tahoe. This is a positive development, as the lake’s water clarity has been at its highest level since 1988.
Key Facts about Mysis Shrimp in Lake Tahoe
| Fact | Details |
|---|---|
| Introduction | Mysis shrimp were introduced into Lake Tahoe in the 1960s as a food source for native trout. |
| Impact | They have been identified as a major cause of the decline in Lake Tahoe’s water clarity. |
| Population | Billions of Mysis shrimp live in Lake Tahoe. |
| Size | They measure less than an inch long. |
| Lifespan | They have a lifespan of one to two years. |
| Reproduction | They reproduce rapidly. |
| Efforts to Control | Researchers are working to find effective methods to remove the shrimp from the lake. |
Conclusion
The presence of Mysis shrimp in Lake Tahoe has had a significant impact on the lake’s water clarity, leading to ongoing efforts to control their population. While the shrimp population appears to be declining, the long-term effects on the lake’s ecosystem remain to be seen. As a Lakes Touring Enthusiast, it’s important to stay informed about the environmental challenges facing Lake Tahoe and support the research and conservation efforts aimed at preserving this natural wonder.