Kelp Bed Monitoring

Kelp Bed Monitoring

The large brown algae commonly known as ‘kelp’ provide habitat to a variety of species in Puget Sound, and are considered critical habitat warranting protection. Conspicuous declines in the abundance of bull kelp (Nereocystis luetkeana), the most common canopy-forming species in Puget Sound, have been observed in many areas.

Scientists are currently investigating whether growing kelp can reduce CO2 levels in the inland marine waters of Puget Sound.

In 2014 the Northwest Straits Commission launched a regional survey of bull kelp beds using a kayak-based survey protocol. Several agencies including the Department of Natural Resources are interested in the on-the-ground surveys to confirm the data based on their flight surveys. The following video gives you a better idea of the project. Clallam MRC joined the effort in 2015.

In April 2018 Suzanne Shull, NWSC, gave a presentation summarizing the results of three year's volunteer surveys at the Salish Sea Ecosystem Conference in Seattle. The presentation with notes is available here.

Northwest Straits Commission's survey protocol
Surveying kelp via kayak in Puget Sound

Summer 2018

On July 16th a group of volunteers including the Clallam summer intern Griffin Hoins conducted a survey of the kelp bed in Clallam Bay. Similar to 2017 the survey included estimating the distribution of the two most prominent species - bull kelp and giant kelp. In addition, the possibility of collecting plankton samples was explored. Two surveys were conducted in Freshwater Bay delineating the large and small kelp bed on July 26th and August 10th.

Delineating kelp bed
Griffin Hoins taking temperature measurement
West end of Clallam Bay looking east. July 2017

Summer 2017

In 2016 a land-based reconnaissance trip looked at several kelp beds between Deep Creek and Neah Bay. The kelp beds along the Strait are usually very large and therefore not suited for the kayak survey technique. However, one smaller kelp bed in a relatively protected area west of Clallam Bay was identified as a possible kelp bed to be surveyed in 2017.

Two surveys of the bed in Clallam Bay were conducted on July 9th and 23rd. Part of the effort included identifying the kelp species and estimate their distributions. A survey of the large kelp bed in Freshwater Bay was conducted on August 20th and another survey of the small bed is planned for September 17th.

The data was compiled with other survey data collected in Puget Sound at the end of the season.

Bull and giant kelp distribution in Clallam Bay
Small kelp bed in Freshwater Bay
Kelp Bed Monitoring