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News & Ideas

Biological Resources

March 27, 2023

On the Lookout to Protect Florida’s Treasured Crested Caracara

It’s a common sight across the US: a wake of vultures feeding on roadkill on...

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March 22, 2023

ESA Expands Biological Resources and Land Management Team in Northwest

ESA is pleased to announce the additions of Aaron Killgore, Anna Kopitov, and Jennifer Thomas...

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February 3, 2023

Where the Wild Things Roam: Creating Safer Crossings for Animals and Motorists

Promising new federal and state legislation is helping to fund much-needed wildlife crossing projects and...

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February 3, 2023

Collaborative Regional Partnerships Help Restore Habitats Along Freight Rail Corridors

Restoration is underway in Puget Sound to replace existing railroad embankments and culverts along a...

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September 15, 2022

ESA Welcomes
Peter Stevens as
Principal Fisheries
Biologist in the PNW

We are pleased to announce that Peter Stevens has joined ESA as Principal Fisheries Biologist...

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August 4, 2022

Mark Dodero Joins ESA
as Senior Principal
Restoration Ecologist

Mark has more than 40 years of experience assessing, restoring, and managing diverse biological resources,...

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February 18, 2022

Reversing the Tide: Guiding Puget Sound Restoration Efforts to Save Migrating Salmon

The Local Guidance Document for U.S. Entities provides a detailed resource for local salmon recovery...

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January 4, 2022

Susan Cunningham
Named Director of
Biological Resources in Northwest Region

Susan leads the team’s ongoing work in transportation and airports, conservation planning and restoration design...

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October 29, 2021

Handle with Care: Guiding Bats to Safety in Florida

Bats are beneficial, often misunderstood creatures which play a vital ecological role in Florida and...

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October 21, 2021

ESA Expands Mitigation Service Offerings with Two Key Hires

Melissa Denena and Katie Dudney bring niche expertise to the firm’s Northern California Biological Resources...

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Tampa Bay HBMP aerial of project area
September 3, 2021

Historic Legislative Session Has Big Implications in Washington State

The Washington State Legislature passed a two-year $59 billion budget and several major pieces of...

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August 6, 2021

U.S. Army Corps of Engineers Regulatory Specialist Dr. Daniel Swenson Joins ESA

Based in the firm’s Los Angeles office, Daniel will work with clients and colleagues across...

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July 22, 2021

Jill Sunahara Named Director of Biological Resources and Land Management Group in Northern California

Jill Sunahara's more than 20-year career has focused on environmental compliance, regulatory permitting, and project...

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March 26, 2021

Fish Passage Projects Offer Instant Relief for Fish in the PNW

While the results of a fish passage project can be immediate, getting to the final...

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January 26, 2021

Working Clean: A Guide to Curbing the Introduction of Invasive Species

Whether you are a field biologist or a casual weekend explorer, it's important to learn...

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February 13, 2020

ESA Biologist Erika Walther Receives Salt Marsh Harvest Mouse Permits

One of the smallest, and arguably cutest, San Francisco Bay endemic species is the salt...

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November 4, 2019

Inside Look: ESA’s Fisheries Team

Matthew Silva is a part of our Northern California Fisheries team consisting of 20 fisheries...

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September 4, 2019

Environmental DNA in a Regulatory and Operational Landscape

Environmental DNA (eDNA) is DNA collected from the environment—water, soil, and air—rather than directly from...

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