Monthly Archives: May 2023

ahmanson ranch, climate change, nature, nature|trees, photography, smmc open space, trails, trees, trees, upper las virgenes canyon open space preserve

Upper Las Virgenes Canyon Trailhead Valley Oak

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Large valley oak near the Upper Las Virgenes Canyon Trailhead of Upper Las Virgenes Canyon Open Space Preserve (aka Ahmanson Ranch)

This large valley oak lives near the Upper Las Virgenes Canyon Trailhead of Upper Las Virgenes Canyon Open Space Preserve (aka Ahmanson Ranch). There used to be several large valley oaks near the trailhead, but they were killed in the 2018 Woolsey Fire.

The trunk of the Upper Las Virgenes Canyon Trailhead valley oak.
The brim of the cap is about 7 inches wide.

This tree is as large as any of the valley oaks I see along the trails at Ahmanson. I estimate it’s diameter to be a little under four feet. That’s not large by Northern California standards, but it is still a sizable tree. Valley oaks have a tougher time here.

Along with coast live oak, the valley oak is one of the iconic species of oak-grasslands at Ahmanson Ranch. In the past 20 years, valley oaks at Ahmanson Ranch have been more severely impacted by drought, fire, and rising temperatures than live oaks. In the not too distant future, the valley oak may become a relic at Ahmanson, much like the blue oak that died earlier this year.

Some related posts: Ahmanson Valley Oaks Finally Get Their Leaves, Ahmanson Valley Oaks Battling Drought, Ahmanson Blue Oak Succumbs to Climate Change, and Many More

landscape, photography, photography|trail running

Sage Ranch Fun Run

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Running along upthrust sandstone rocks at Sage Ranch Park.

The photo above is of Brett running along upthrust sandstone rocks at Sage Ranch Park in the Simi Hills.

We followed the crest of the rock formation to the top of rock in the distance on the right of the photo.

Sage Ranch Park is adjacent to Boeing’s Santa Susana Field Laboratory. A portion of the park  has been closed for more than five years, pending the cleanup of lead shot and other contaminants from the site of a former shooting range. In 2017 a new trail was created to detour around the closed area.

Some related posts: Sage Ranch Micro-Wilderness, Grinding Mortars and Water Holes, Mountain Lion Saga

ahmanson ranch, photography|landscape, photography|trail running, running, smmc open space, trails, upper las virgenes canyon open space preserve, weather|southern california

Lasky Mesa Runner, Grassland, and Clouds

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Lasky Mesa Runner, Grassland, and Clouds

Brett was down for a few days, and as an initial run we did a loop from the Victory Trailhead of Ahmanson Ranch, through part of Las Virgenes Canyon, up onto Lasky Mesa, and then back to the trailhead.

Upper Las Virgenes Creek still flowed. Valley oaks were full with new leaves. The green grasses of the rain season had finally turned, and rare May cumulus clouds were painted on postcard skies.

It was an outstanding run!