Winters at Dry Creek

An invertebrate-heavy day in Winters

Winters High School at Putah Creek Dry Creek Confluence
SLEWS Program | Sacramento Valley | January 10, 2020

Participating School
Winters High School

Partners/Landowners
Yolo County Resource Conservation District
Valerie Whitworth and Michael Barbour

Mentors
Josh McCabe, Restoration Coordinator at ACRT Pacific
Lea Pollack, UCD Graduate Student
Marisa Alcorta, Apprenticeship Program Manager, Center for Land-Based Learning

Summary of the Day
Our second field day at the confluence of Putah and Dry Creek in Winters brought us many eager students, both familiar and new to the program.

A guest speaker joined us for opening circle – Jessa of the Xerces Society, an organization focused on invertebrate conservation. She spoke about the alarming decline in the population of the Western Monarch Butterfly (population down 86% from 2017 to 2018) and how the results of this restoration project will help support monarchs in their migration. We finished our opening circle with a game of “Where the Wind Blows” to identify similarities within our group.

After dividing into mentor groups and gathering our tools for the day, we headed down to the project site for our planting demonstration. Amy Williams of Yolo County Resource Conservation District began by introducing students to four of the plants we’d be planting that day – deerweed, toyon, fuschia, and wild rose. As these plants were passed around, students learned their ecological benefits and how to identify them. Then Amy demonstrated the main task of the day, planting trees, shrubs, and forbs. Each plant would be planted in specific spots along the irrigation line, and an emitter would be installed next to it to provide the plant with adequate water.

Mentor groups enthusiastically tackled this job in different areas, with some groups following to install “spaghetti” line to ensure the water would reach the plants. Once groups finished planting the larger plants, Amy showed them how to plug plant smaller “plugs” by poking holes in the ground using a “dibble”. We were all impressed by how much we accomplished by lunchtime!

After lunch, mentor Lea Pollack gave a presentation on the work she’s doing in her Ph.D. program. She studies behavioral ecology and works with black widow spiders. Students were surprised to learn that black widows have personalities! The more “aggressive” (not to people – to other spiders and prey) spiders build their webs in a different way than less aggressive individuals, and you can actually see the difference when the webs are sprayed with water! Mentor groups were each given a misted web (without a widow in it) and counted the number of “gum footed” lines in the web to figure out whether the spider that made it was aggressive or not.

During closing circle, students reflected on what they had learned that day. Many students shared facts about monarch migration, others shared the planting techniques they learned, and even more mentioned black widows – that they have personalities, that only the females build webs, and that the web structure can tell us about their behavior!

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