Skip to content
Herrera
  • Team
  • Story
  • Projects
  • Publications
  • Services
  • Blog
  • Careers
  • Contact
  • Search

Trophic Cascade Effects on Algae Blooms in Washington State

Herrera conducted a study of the trophic cascade effects of trout stocking on algae blooms and cyanobacteria (blue-green algae) toxins in Washington lakes for the Liberty Lake Sewer and Water District with funding provided by the Washington State Freshwater Algae Control Grant Program. Study questions and hypotheses were developed from the compilation and review of 65 relevant publications, which generally showed that trophic cascade effects are most prevalent in lakes with high trout stocking rates and low amounts of algae. Existing water quality, cyanobacteria toxin, and trout stocking data were compiled and relationships among the key variables were evaluated on a seasonal and annual basis using principal component analysis (PCA) and multiple regression (MR). A detailed analysis of Liberty Lake, located in eastern Washington, was performed using an 18-year water quality database that included phytoplankton and zooplankton species abundance data. In addition, trophic state parameter data were compiled from ambient monitoring programs for 96 lakes with over 10 years of data in western Washington. A technical committee consisting of 15 lake experts from the University of Washington and various state and county agencies provided input in the study design and data evaluation.

Location
Liberty Lake, WA
Owner
Liberty Lake Sewer and Water District
Project Contact
Rob Zisette
Services
Aquatic Ecology
Project Type
Environmental Science

Related Projects

View all projects →

White River at Pacific Right Bank Flood Protection Project Planning and Design

→

Hidden Lake Dam Removal

→

City of Kenmore Integrated Aquatic Vegetation Management Plan

→

Swift Creek Sediment Management Action Plan Implementation

→

Lone Lake Management Plan

→

Lake Sammamish Snorkeling Survey

→

Navigation

  • Team
  • Story
  • Projects
  • Publications
  • Services
  • Blog
  • Careers
  • Contact
  • Search

Our Offices

Seattle, WA
2200 Sixth Avenue
Suite 1100
Seattle, WA 98121
Phone (206) 441-9080
Contact: Phil Coughlan
Portland, OR
1001 SE Water Avenue
Suite 290
Portland, OR 97214
Phone (503) 228-4301
Contact: Ellen McClure

 

Missoula, MT
101 East Broadway
Suite 610
Missoula, MT 59802
Phone (406) 998-6760
Contact: Heidi Houck
Bellingham, WA
1329 North State Street
Suite 200
Bellingham, WA 98225
Phone (360) 398-5075
Contact: Chris Webb

 

Olympia, WA
1220 4th Avenue E
Olympia, WA 98506
Phone (360) 754-7644
Contact: Joy Michaud
LinkedInFacebookTwitterInstagram
Join our Newsletter

Copyright © 2018 Herrera Environmental Consultants - Made by Needmore

Join Our Newsletter