Category Archives: Natural Resources Management

Trees are Infrastructure: Planning for Trees to Create Resilient, Equitable Communities

Planning for Trees Improves Climate Resiliency As the climate changes and the earth warms, extreme heat days (temperatures over 95°F) have increased in frequency and wildfires fueled by dry vegetation burn bigger and for longer, negatively impacting air quality both locally and nationally. While unable to completely cancel out the impacts of an extreme heat

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How to Recognize and Manage an Invasive Shot Hole Borer (ISHB) Infestation

Invasive shothole borer (ISHB) is a group of two species of ambrosia beetles that are native to Southwest Asia. Suspected to have first arrived in Southern California in 2003, the beetles were previously misidentified as a less aggressive pest until approximately 2012. Since then, thousands of trees in forests, cities, and residential areas have become

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Protecting Plants while Protecting the Planet: Approaches to Bolster Narrowly Endemic Plant Species

To address and reverse global effects caused by a rapidly changing climate, various industries have emerged that are leading efforts to reduce greenhouse gas emissions though alternative energy production. However, sometimes alternative energy projects which are focused on issues global in scale, run into issues protecting sensitive narrow endemic plant species at the local scale

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Protected Tree Species: Limiting Development Impacts from Permit Application through Long-Term Monitoring

Limiting impacts to protected tree species takes place at four distinct points in time throughout project development. A thorough tree inventory informs and ensures a comprehensive Protected Tree Report. During construction, monitoring is essential to avoid impacts to protected species. Finally, long-term monitoring and management facilitate long-term health of protected tree species. Following, Dudek Urban

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Custom Dudek Tool Enables Efficient Trail Alignment Assessment

In post-fire landscapes, unauthorized trail pioneering often occurs when barriers to passage, such as dense native vegetation, have been removed. Unplanned, spontaneous trail establishment is done without consideration of proper trail design, and these activities often happen out of the purview of land managers, in areas where patrolling is infrequent or absent due to limited

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Foothill Yellow-Legged Frog Listing Finalized: What that means for your California projects

Last month, the California Fish and Game Commission officially listed five of the six clades of the foothill yellow-legged frog as either Endangered or Threatened under the California Endangered Species Act (California ESA). This listing formalizes the protections the species has temporarily had as a Candidate for listing since July 2017. This listing significantly expands

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Hermes Copper Butterfly May Be Listed as a Threatened Species–What that Means for Your Projects

On January 8, 2020 the U.S. Fish and Wildlife Service (USFWS) officially published proposed rules for listing the Hermes copper butterfly (Lycaena [Hermelycaena] hermes), a species endemic to San Diego County and northern Baja California, Mexico, as threatened under the Endangered Species Act (ESA). The proposed rule also designates 35,211 acres of Critical Habitat in

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The Remarkable Restoration of the Bay Checkerspot Butterfly in Edgewood Preserve

On an afternoon in Redwood City, California in 2002, Dr. Stu Weiss documented the last Bay Checkerspot butterfly to fly in Edgewood Preserve. The butterfly was extinct from the area. Following its extinction, Dr. Weiss was determined to change the butterfly’s fate and understand what caused its massive collapse from an area where it used

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5 Steps to Urban Forest Management Plan Success

With shifting environmental conditions, cities are recognizing the important role trees play in creating a robust urban forest that is capable of reducing surface temperatures, improving air quality, conserving energy, and increasing quality of life, amongst many other benefits. A sustainable urban forest must contain healthy, well maintained trees with high species and age diversity.

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Start Fuel Modification in Spring to Protect Structures from Fire

Start Early As vegetation starts to dry out after heavy winter rains, spring is a critical time to perform fuel modification for fire protection planning ahead of the hot and dry summer. “Focus on reducing the amount of fuel available to a wildfire by removing dead and dying plants, highly flammable species, dense vegetation, and

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