Join NOSC to monitor macroinvertebrates at Chimacum Creek!

Macroinvertebrate. It’s a term that is familiar to some, but unfamiliar to many. Macroinvertebrates are small organisms that lack a backbone, are visible to the naked eye, and are large enough to be easily collected. Aquatic macroinvertebrates include insects, crustaceans, bivalves, gastropods, and annelids. The particular assemblage of aquatic macroinvertebrates in a given waterway can be an excellent indicator of ecosystem health. This is because different species have varying levels of tolerance to pollution and disturbance. Some, like stoneflies and mayflies are highly sensitive to changes in water quality, while organisms like crayfish, leeches, black flies and midges are much less sensitive. Macroinvertebrate sampling is a fun and relatively simple way to assess stream health and NOSC has been facilitating sampling activities in local streams and rivers for several years. Come join us on Thursday, May 21^st from 10 am – 1 pm at HJ Carroll Park in Chimacum as we analyze the creek’s health through macroinvertebrate sampling. This is an activity that is appropriate for all ages, so feel free to bring the family along!

Event Details:

Thursday, May 21st

10 am – 1 pm

Please arrive by 10 am for site orientation and training. Bring snacks, water, layers appropriate for our spring weather. If you’d like to participate in the collection of macroinvertebrates from the creek, please bring waterproof boots. NOSC will have a limited supply of hip waders available on a first come first served basis.

Top: photo of a mayfly nymph courtesy Tom Murray.