Protecting and Restoring the Morro Bay Estuary.
aquatic bugs

Bioassessment 2021: the results are in! How healthy are local creeks? Plus a new video!

Click here to watch the new bioassessment video now, or find it at the end of this post.   Annual bioassessment monitoring tells us about creek health Each spring, the Estuary Program heads up a bioassessment monitoring effort in our local creeks. The data helps us understand the health of our creeks and how conditions are changing over time. The effort has two main components. We collect benthic macroinvertebrates, which are bottom-dwelling animals visible to the naked eye that lack a backbone. These include creatures such as stoneflies, dragonflies, and aquatic snails. We also collect habitat measurements such as whether …

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Field Updates April 2021: Bioassessment Highlights and Volunteer Support

Staff member holds a rock during bioassessment

    What is bioassessment? For those of you unfamiliar with this effort, our annual spring bioassessment is our largest survey effort of the year. This survey effort focuses on the biological assessment of ten local creeks within the Morro Bay watershed, using an evaluation protocol created by the Surface Water Ambient Monitoring Program (SWAMP) and the State of California. Bioassessment surveys utilize a number of different criteria to assess creek health, with the primary focus being the assessment of benthic macroinvertebrates (BMIs). BMIs can be used as a proxy to determine stream health, since the abundance or absence of …

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