Dr. Winnie Hallwachs is a tropical ecologist who has worked for many years in the ACG as a researcher and technical advisor to Área de Conservación Guanacaste (ACG). She has worked closely with Dan Janzen in the development and implementation of biodiversity projects and programs and in the founding of ACG's formal non-profit partner, the Guanacaste Dry Forest Conservation Fund.
- Who We Are
- Team
- Board & Advisors
- Dan Janzen
- Winnie Hallwachs
- Frank Joyce
- Stephen Stroud
- Eric Palola
- Brad Zlotnick
- Rob Pringle
- Jessie Hill
- Scott Miller
- Alex Smith
- Sara O'Connor
- Jorge Cortés Núñez
- Rex Hamilton
- Mark Van Putten
- Alejandro Masís
- Patrick Goodwillie
- Anne Lambert
- Nicholas Lapham
- Jason W. Green
- Karen Baldwin
- Robert Puschendorf
- Béryl Lacoste Hamilton
- Our Supporters
- Financial Information
- Where We Work
- What We Support
- Ways to Help
- Latest News
- Our Latest Newsletter is Out!
- Wrapping Up the 2021/22 Arribada Season
- Volcán Orosi, Then and Now
- Planting Seeds at Horizontes
- GDFCF Now Accepts Cryptocurrency!
- New Donation Will Help Costa Rica's BioAlfa Project
- Announcing a New Addition to ACG!
- Our Latest Newsletter is Out!
- Journal's Special Edition Focuses on Marine Research in ACG
- Save the Date!
- Thanks to You, We Met Our Crowdfunding Goal!
- Costa Rica "Punches Above Its Weight" at COP26
- We're Tracking Migratory Birds!
- "You Can Feel It in Your Bones"
- Our Rainy Season Newsletter and New Crowdfunding Campaign
- UCR Awards an Honorary Doctorate to Dr. Dan Janzen
- "ACG Shows the Way to the Present and the Future"
- Where Are We?
- Update on Estación Nancite Repairs
- Estación Pitilla's Latest Makeover
- 36 Brand New Moth Species in Costa Rica
- More Funding for Biodiversity Headed to Costa Rica?
- Nancite Repairs Are Underway
- News from ACG's Dry Season
- ARUs Make Their Debut in ACG
- Parque Santa Rosa Turns 50!
- Resources