Forests

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A dense stand of spiny yellow starthistle plants with light green, spindly foliage and bright yellow flowers.

Invasive Species: Nature’s Troublemakers

March 11, 2026
By Lindsey Hack
California is famous for its scenic wilderness and biological diversity. Unfortunately, our state’s unique ecosystems are in danger, and invasive species are among the biggest threats to our environment. Invasive species can cause all kinds of environmental damage, such as harming wildlife, disrupting our…
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Igor's Urban Website!: Page

Urban streams, storms, and homeless populations

Starting in 2024, I have been collaborating on a large set of studies to examine conditions in urban streams across the San Francisco Bay Area.  These studies involve GIS modeling, remote sensing, and in-field stream surveying, as well as surveys of homeless encampments and interviews with residents. …
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The green foliage of a small sycamore tree coated with fluffly, white patches of powdery mildew fungus.

What's That Powdery Stuff on My Plants?

March 5, 2026
By Belinda Messenger-Sikes
Have you seen white powdery-looking patches appearing on the leaves of your roses or sycamore trees? While home gardeners may be familiar with this sign of the plant disease powdery mildew on their veggies, ornamental plants and landscape trees can also be infected. In addition to those powdery spots, the…
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Nutrition Policy Institute News: Article

Water Is K’é: using tradition to build healthier hydration habits

March 2, 2026
Can reconnecting with one’s traditional culture be an important key to healthy habits? A recent community-based study evaluated the impact of a culturally-grounded intervention designed to improve beverage consumption habits among young Navajo children. Between 2021 and 2023, 74 families participated in…
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dry brush in front opens to landscape of hills covered by trees and rangelands. A lake is in the valley in the distance
UCCE Central Sierra: Article

Central Sierra: UCCE Researchers Bring Virtual Fence Technology to Local BLM Lands

February 25, 2026
By Scott R Oneto, Brian J Allen
Emerging Precision Agriculture Tool Improves Grazing Systems  For the past four years, UC researchers have been examining the usefulness of virtual fence (VF) technology on a multitude of landscapes across the Sierra Nevada. Virtual fencing is an emerging precision agriculture tool capable of improving…
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