Black Lake Stewardship Society


DIAMOND CLUB
$1,000 and above
Alan & Louisa Shimamoto
Anonymous
Anonymous
Black Lake Bible Camp
Brian Wilmovsky
John Aslakson
Ken & Christy Raske
Larry & Sue Smith
Randy Selness
Tim & Sandy Collins
Vernon & Stacy Bonfield
Vince Gildner
GOLDEN SHORES CIRCLE
$500 to $999
Bill Conrad
Bob Zeimek
Brenda & Eddie March
Dan Berschauer
Dena & Kelly Thompson
Dennis Boone
Doug Whitaker
Jeff Lemon
Jonna VanDyke
Kris & Lauri O'Bannon
Lyle Westhoff
Nancy & JB Davis
Pat & Mike Madigan
Ray Dooley
Robert & Nita Sell
Sonny Mike
Tim & Shirley Erickson
BLACK LAKE TRUSTEE
$100 to $499
Bart & Candice Rydalch
Betty Hall
Brian Delay
Conrad & Denise Riedl
David & Blanca Maag
Deb & John Wallace
Donna Bennett
Eric Lee
Francis Metz
Fred Metcalf
Greg Cummins
James & Melissa Beard
Jim & Carol Kirby
Jim Krieger
Joe & Sherry Heye
John & Effie Henkle
John Schumock
Kevin House
Lake & Sherry Stintzi
Leon Flaherty
Linda & Donald Rollins
Linda & Matt Tobin
Mark & Brenda Hetland
Maxine Jones
Nancy Williams
Nikki Pettet
Patricia Spoltman
Patty May
Paul Batton
Phil Brinker
Ruth Carr
Sue Adams
Thu Ngo
FRIENDS OF BLACK LAKE
Under $100
Daphne McGregory
Donna Roney
Katherine Gray
Lori Grossi
Virginia Matson

Invasive Species found in Black Lake

 

The presence of the non-native invasive aquatic plant, Eurasian watermilfoil (milfoil – Myriophyllum Spicatum), is common to many lakes throughout Washington and the Pacific Northwest.

The growth of milfoil in Black Lake limits recreation, navigation, disrupts natural water flow, and adversely impacts aquatic habitat and water quality. To date, hand pulling has been employed to control plant density by physically removing plants. This method of control has prevented the rapid expansion of both the area covered and density potential of this nuisance plant.  For more information about Eurasian Water-milfoil, visit the Dept of Ecology website.

Yellow IrisWhite Water LilyTwo other non-native plants are also adversely impacting the ecological balance of Black Lake and its beneficial uses. Specifically, yellow iris (Iris pseudacorus) and white waterlily (Nymphaea odorata) are encroaching upon the shoreline and open water area of the lake.

Not only are all parts of yellow iris poisonous, causing skin irritation, but the plant forms dense colonies that alter shoreline and aquatic habitat.  The white waterlily can grow to nuisance densities and, in response to high nutrient availability, accelerate nutrient over-enrichment of a water body.

Two native plants are also found in notable densities in Black Lake, slender water-nymph (Najas flexilis) and spatterdock (Nuphar polysepala). Dense growth of water-nymph is a likely a response to the lake’s nutrient supply as it forms some dense colonies that directly impacts some recreational uses. On the other hand, water-nymph provides direct aquatic habitat benefits to fishes and invertebrates and is an important food source for waterfowl. The plant also serves to balance the primary production in the lake by providing direct and indirect competition for nutrients versus the cyanobacteria (blue-green algae) that also have produced blooms in the lake. Spatterdock  nuphar polysepalaSpatterdock also provides aquatic habitat and is a direct food source for aquatic biota, but its current coverage is not presenting a nuisance relative to the beneficial uses of Black Lake.

 

Click Here to see larger line drawing map of Black Lake with Invasive Species locations.