Protecting and Restoring the Morro Bay Estuary.
bmi

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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Bioassessment Survey Results 2019: Tracking the Health of Local Creeks

Two volunteers wear waders and dark red plaid shirts. The one on the left holds an algae-covered rock that is about 12 inches long. The volunteer on the right uses a red ruler to measure the width of the rock. The data that they collect will be used to calculate the overall bioassessment survey results for the year.

  What we learn from bioassessment survey results One of the goals of the Estuary Program is to monitor the bay and the lands that surround it to better understand conditions and how they are changing over time. As part of this effort, the Estuary Program conducts spring bioassessment surveys. This data allow us to assess the health of our creeks and determine if they support sensitive aquatic life. What we collect during bioassessment surveys Each spring, staff and volunteers head out to local creeks to collect habitat measurements such as the depth of the water, the size of the …

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