ANNUAL REPORT
“To be whole. To be complete. Wildness reminds us what it means to be human, what we are connected to rather than what we are separate from.”
- Terry Tempest Williams, naturalist and “citizen writer”
“To be whole. To be complete. Wildness reminds us what it means to be human, what we are connected to rather than what we are separate from.”
- Terry Tempest Williams, naturalist and “citizen writer”
Aspen Center for Environmental Studies (ACES) is a nonprofit environmental organization with three locations in the Roaring Fork Valley: Hallam Lake, Rock Bottom Ranch, and the Catto Center at Toklat.
Since 1968, ACES has inspired a life-long commitment to the Earth by providing innovative and immersive programming for all ages. Our programs focus on education, regenerative agriculture, forest and ecosystem health, land restoration, and environmental leadership.
ACES contributes to a national agenda for increased environmental awareness. With support from many partner organizations, our programs reach over 140,000 individuals every year. We teach daily in local schools, lead camps in the summer, and host adult classes. We share the beauty and ecology of our area with locals and visitors through naturalist-led hikes and field programs for all ages. We also engage our community by hosting public lectures and events. ACES collaborates with land trusts, public agencies, and other nonprofits to achieve our mission.
In the next 50 years, ACES seeks to cultivate a community of environmental stewards so that children, parents, consumers, decision-makers, and leaders can make informed decisions in an increasingly complex world.
Amiee White Beazley
Chris Cohen Photography
Eli Stoken
Isa Catto Shaw and Daniel Shaw
Jordan Curet
Kelsey Brunner
Olive and West Photography
Peter Feinzig
Stonehouse Pictures
This year, scientists discovered quasar J059-4351, containing the fastest growing black hole ever recorded, 17 billion times larger than our own sun, swallowing the equivalent of one sun every day and radiating energy equivalent to 500 trillion of our suns. Yes, trillion! Located 12 billion light years from Earth, it is now the brightest known object in the universe. This is noteworthy partly because it is so categorically mindblowing, but also because it exemplifies how impressive science is! I’m referring to the physics, dynamics, chemistry, calculus, and optics it took to discover it.
Last April, the same science concepts enabled the prediction of the recent solar eclipse to the exact second that it passed by each individual part of the U.S. All of us, regardless of political or religious affiliation, watched together, united by one magical moment with our sun and moon.
Thanks to science, modern medical procedures are possible, including cancer treatment, organ transplants, and openheart surgery. Science gives us carbon-free nuclear, wind, and solar energy and the eradication of polio, measles, and smallpox. Science even saved my own life when a robot was used to eliminate a deadly arrhythmia in my heart—all without even cracking my chest!
Today, only 57% of Americans say science has had a positive effect on society. When it comes to trust, almost 30% of U.S. adults have no confidence that scientists will act in the public’s best interest. Even those who rate themselves as “most trusting of science,” have declined 40% in the last three years.
Yet, we all still fly on planes (trusting the science of aerodynamics that they won’t crash), drive cars (trusting the science of hydraulics that the brakes will work), and take antibiotics (trusting chemistry that it will fend off infection). And, of course, we all use smartphones (trusting computer scientists).
Is it a stretch to trust climate scientists about our warming planet? Ecologists about species extinctions? Environmental scientists about the effects of pollution and resource overuse on our ecosystems, water, air, and human health?
This is where ACES steps in. We teach and inspire science— for all ages. Toddlers engage in our Nature and Me program. Elementary school kids at four schools from Aspen to New Castle get in-class, full-time, environmental science education. Preteens dive into the natural world through our summer nature camps.
High schoolers participate in our Tomorrow’s Voices environmental and civic engagement classes for college credit. Other teens learn and teach environmental education through our Trook Apprenticeship. Students of all ages connect with nature in our year-round outdoor field programs.
After college, Naturalists hone their environmental voices guiding visitors into the natural world throughout the valley. Agriculture Apprentices learn regenerative farming systems, jump-starting their careers by producing food that protects soil and sequesters carbon.
Adults participate in birding, naturalist-led snowshoe tours, Know Your Trees walks, mushroom fairs, astronomy nights, farm tours, and various lecture series on a range of sustainability topics.
In addition to our education work, this past year, our 55th anniversary, we completed numerous capital projects including the renovation of our wilderness retreat center, the Catto Center at Toklat, as well as improvements to Hallam Lake, Rock Bottom Ranch, and our outdoor education hub, Riverdance (all detailed herein). These improvements enable ACES to more effectively engage the world in our mission for another 55 years.
So, in this new world of alleged fake news, social mediaboosted hyperbole, political extremism, and cultural tribalism, who do you trust? At ACES, we trust science—physics, chemistry, biology, and ecology. We rely on it to help us all make informed decisions in our ever more complex world that spans from minuscule protozoans in the soil beneath our feet to mind-boggling quasars light years away.
Welcome to our 2024 Annual Report, where we share some of our progress in meeting our mission of “educating for environmental responsibility.”
Birding Outings
Our community programs transform our sites and the local environment into a community classroom, inspiring a greater sense of place, passion for learning, relationship building, and responsibility toward our environment. These programs thrive on shared and individual discovery in nature at every age. Our landscapes tell us stories and illustrate the role that humans and wildlife play within them. From geologic mysteries to forest adventures, participants of all ages explore the relationships between humans and nature through observation, adventure, games, and storytelling, often learning that everything is interconnected.
Toddlers to adult participants can experience fun, educational, age-relevant programming that instills the importance of environmental stewardship. Many program participants first come to ACES as children in our family programs and continue learning with ACES in their elementary education and beyond. We strive to cultivate authentic, place-based connections through engaging and creativity-driven offerings. These connections maintain personal and community connection with ACES for decades to come.
“Seeing my child become increasingly confident, comfortable, and excited to be outside, exploring at the Preserve, and clueing into animal signs was a highlight of Nature & Me.”
-Nature & Me Parent
FOREST & Climate WALKS Summer Camps
Summer Camp Registrants’ Residence 65%
from Colorado.
of those are Roaring Fork Valley resident s from out of state
Roaring Fork Valley Residents Out of State Residents
Roaring Fork Valley Residents Out of State Residents
Roaring Fork Valley Residents Out of State Residents
6 partner organizations collaborating on programs
24 nights Spent Under the Stars during summer camps
Elementary and middle school students
36% increase in participants from up and down the Roaring Fork Valley
248 hours participants spent at Riverdance in community programs
578 Community programs offered across age brackets
2,150+ hours of community programs offered
2,800 participants
Caregiver & Toddler Programs Field Courses & Hikes Wellness experiences
ACES’ extensive education programs from pre-K through high school are an essential first step toward cultivating environmental stewardship in our community. We kindle curiosity, connect students with their natural surroundings, and prepare them to excel in scientific inquiry and ecological understanding at an early age.
ACES Education partners with schools throughout the Roaring Fork Valley to provide environmental education in the classroom and in the field through hands-on exploration and investigation. With each
of our curricular units, we aim to increase students’ connections to and positive attitudes toward nature, enhance their awareness and knowledge of cultural, biological, and scientific systems, deepen their engagement in learning, and foster self-efficacy. The ACES Education team dedicates time to continue growing and developing their teaching skills. Educators attend the fall and spring conferences of the Colorado Alliance for Environmental Education, gather monthly for curriculum workshops, and attend relevant training at their schools.
3,800
Students in pre-K through12th Grade participated in ACES classroom and field programs
48 Thematic Units ACES educators developed & taught for K-5 classes at our partner elementary schools
2,160 Hours of professional development and training for ACES education staff
34 Hours of environmental education classes that each student at our partner elementary schools receives with ACES each school year
1,400 Hours ACES educators spent teaching students outdoors
Tomorrow’s Voices is a non-partisan, college-level course open to all Roaring Fork Valley high school students. The program provides students with the agency to be active community contributors and is deeply connected to ACES’ mission of educating for environmental responsibility.
“Every Monday, I go back to my dorm parent and have a lengthy conversation about our class. Our discussions on power inspire me to take control of my values. Our discussions on current/past events open my eyes to what responsibility I have to stay informed.”
- Colorado Rocky Mountain School Student
“Being a Naturalist has been incredibly important for me in developing ways to effectively communicate complex natural phenomena in approachable ways for people with wideranging backgrounds. Clear scientific communication is not only important for informing the general public on environmental issues, but also for environmental policymaking.”
-
’23-’24
The ACES Naturalist Program is mutually beneficial for young environmental professionals, community members, and visitors. Each summer, 12-14 recent graduates are invited to Aspen to participate in our Summer Naturalist program to engage our community and visitors with the natural world through guided tours and programs, including bird of prey demonstrations, informational tree walks, and beaver walks. The Naturalist Program is designed to prepare young professionals for careers in the environmental field, while also providing accessible, low-cost programming for the community to learn more about the Roaring Fork Valley. In their time with ACES, Naturalists build confidence and skills to inspire others to meaningfully engage with their surroundings. They do this through interpersonal interactions, sharing the stories of the valley with over 40,000 locals and visitors each year on topics ranging from wildflower identification to watershed issues. Each summer season, ACES is enriched by innovative ideas and energy from this young cohort, with Naturalists reinvigorating our organization.
Devan Crane Director of Programs and Operations at the Aspen Global Change Institute
Jeb Hines
Basalt High School Science Teacher
2021
Grace Berg
Snowshoe Tours: A cornerstone of ACES Naturalist programming, snowshoe tours have never been more popular, and based on guest feedback we think they are an effective activation to have people think about their relationship with the world differently.
Project Coordinator for Breathe Providence, a low-cost, communityscale air monitoring network based in Providence, Rhode Island.
Cecily Nordstrom
Stream Education Manager for Trout Unlimited, bringing education and conservation to students across the United States with communitycentered scientific research.
2022
Lillian Bell
ACES Community Programs Coordinator
Cameron Mackenzie
ACES Livestock Lead at Rock Bottom Ranch
Charlie Robinson
ACES Toklat Resident Supernaturalist
ACES’ Forest & Climate Program works to connect our community to local forests, bolster conservation efforts, and provide education about climate change. In 2022 and 2023, ACES completed two significant restoration projects. Partnering with the Aspen Fire Protection District, the City of Aspen, Pitkin County Open Space & Trails, and the U.S. Forest Service, ACES implemented a second 900-acre prescribed fire in Hunter Creek. With the same partners — alongside the Colorado State Forest Service — we distributed pheromone packets on Aspen Mountain to mitigate the impacts of the ongoing Douglas-fir beetle outbreak. The pheromone packets contain the synthetic pheromone methylcyclohexanone (MCH), which mimics anti-aggregation pheromones naturally produced by bark beetles. Beetles use anti-aggregation pheromones to signal that a tree is full; they’re essentially a “no vacancy” sign on the tree.
This year, ACES will publish its seventh State of the Forest report focusing on the intersection of forest and climate. In addition to dispersing more pheromone packets on Aspen Mountain, we are planning a 2025 prescribed fire on the front side of Red Mountain. When completed, this will help link the restoration work in Hunter Creek to similar work being done in Woody Creek. This type of connectivity and restoration improves habitat and mitigates wildfire.
2,000
ACRES of forest restored in Hunter Creek through fire, mastication, and thinning
14,000
MCH PHERoMONE PACKETS distributed on Aspen Mountain to protect trees from Douglas-fir beetle
850
ACRES of prescribed fire planned in 2025
13
PARTNER ORGANIZATIONS
“How did you go bankrupt?” Bill asked. “Two ways,” Mike said. “Gradually and then suddenly.”
-The Sun Also Rises, Ernest Hemingway
Forests are dynamic ecosystems, always changing and evolving. Sometimes change is slow: a seedling dropped last spring might sit on the forest floor for decades before germinating. Sometimes change is rapid: in a matter of seconds, a wildfire can dramatically transform a forest. When viewed in isolation, these changes might seem random. However, when considered together, it becomes clear that the changes in a forest follow a pattern influenced by various factors. Among these, climate plays a crucial role in guiding the many small and large changes within a forest.
A newly germinated Engelmann spruce came from a tree less than 600 feet away; the seed tree may have germinated in the same manner over 500 years ago. The natural cycles of a forest are events set in motion long ago. Climate frequently provides the timing for these events, and timing is essential. For example, leaves that emerge before the final spring freeze will die and fail to photosynthesize. Forests have evolved to thrive in a stable and predictable climate, and any abrupt changes can disrupt these fine-tuned cycles.
Climate, like forests, is dynamic: it is always changing and evolving. Any long-term change in climate is associated with species extinctions. If the change is slow, species may adapt, slowly moving to once again find climatic pockets where they are able to thrive Faster change results in more species going extinct. Over the past 500 million years, there have been at least five mass extinction events, periods in which over 75% of Earth’s species have gone extinct. Many of these events are associated with rapid climate change.
Over the past 150 years, Earth’s climate has been changing as a result of human carbon dioxide emissions. With changes in climate come novel changes in our forests. Persistent drought and above-average temperatures weaken trees, making them more susceptible to bark beetle outbreaks, wildfire, and pathogens. To respond to these changes we need to change how we manage forests.
For as long as humans have inhabited North America, we have played some role in managing forests. Native Americans used fire to rejuvenate forests and preserve hunting grounds. Europeans initially managed forests for resources, primarily timber and water. In the 1960s, this management changed to equally value wildlife, grazing, recreation, and wilderness. While many management techniques have been employed (to varying degrees of success or failure), all management has been predicated on the concept of
stationarity. Stationarity says that future conditions will be similar to past conditions. Extreme events, such as wildfires and beetle outbreaks, will happen but are predictable in the sense that they are similar in size and severity to previous events. Climate change breaks stationarity and makes management much more challenging.
To effectively manage forests in a nonstationary world, we need to manage for uncertainty. In any situation with uncertainty, one of the best tools we have is diversity. In the case of forests, this includes diversity of species, diversity of age, and a diversity of genetics within a species. Doing this isn’t as complicated as it sounds.
Managing for diversity starts with a diversity of management approaches. It is neither practical nor advisable to attempt to actively manage all forests. We need to identify areas where we allow forests to respond to climate change with minimal human intervention. Locally, this will primarily take place in federally designated wilderness and roadless areas. Other forests that have a history of disturbance and are closer to roads and communities are good candidates for more active management.
Forest management doesn’t attempt to build an ecosystem from the ground up, but rather guides and influences the natural processes within an ecosystem. This can be done with tools such as controlled burns, mechanical treatments (including selective logging, patch cuts, or even clear cuts in some areas), or invasive species management. Locally, ACES in partnership with Aspen Fire Protection District, the City of Aspen, Pitkin County Open Space and Trails, and the U.S. Forest Service has taken many of these steps in the Hunter Creek Valley. As climate change impacts forests, managers are considering assisted migration, which involves introducing non-native trees that are better suited to the new climate. While this technique has potential success it also has significant risk: humans have a long history of introducing new species with very unpredictable and undesirable ecosystem results.
Unfortunately, no amount of management can truly prepare forests for the dramatic changes in climate caused by human actions. For any management to be successful, we need to decarbonize our economy and rapidly reduce greenhouse gas emissions. We also need to accept that forests will be changing. In many areas, we already see these changes: aspen groves on south-facing slopes are being replaced by shrubs, or conifer trees killed by bark beetles or wildfires are not regenerating. When we make profound changes to the climate, we cannot expect ecosystems to remain the same.
ACES at Rock Bottom Ranch aims to inspire a community of food-educated citizens. The ranch continues to evolve education about growing food, from our Farm-to-Table Dinners to our Farmer Training Program. Rock Bottom Ranch integrates local food production with land stewardship. Our agricultural practices demonstrate that food production can be profitable while protecting local ecosystems and enhancing the social fabric of our community.
1,627 transactions at Rock Bottom Ranch Farm Store
5,508 total customers served at Aspen Saturday Market & Carbondale Farmers’ Market
954 pounds of ground beef sold
80,252 eggs collected
43 Lambs born
18 vegetable varieties trialed for winter growing
43 CSA members served
422 Carrot bunches washed, bagged, and sold
Our Farmer Training Program consists of teaching four apprentices from April through October on the regenerative agriculture practices that guide Rock Bottom Ranch’s work. Apprentices receive weekly lessons on our production systems, paired with the opportunity to tour and learn from several other farms in the Roaring Fork Valley. In conjunction with our apprenticeship, we also run a 10-week stewardship program geared toward introducing aspiring farmers to the basic principles of both vegetable and livestock production. Each steward spends
five weeks learning about vegetable production and five weeks learning about livestock production.
This immersive, hands-on program serves not only to teach aspiring farmers technical skills in farm operations but also demonstrates how RBR’s community-scaled agriculture plays a role within the larger community. The Farmer Training Program exposes people to the different aspects of farming, and to the potential to pursue many different opportunities within agriculture.
Kathleen just completed a Master’s of Environmental Science at the Yale School of the Environment. Her research and coursework focused on the conservation of agricultural land in the Rocky Mountain West through land and water management, management tools for private land, and drought adaptation.
After graduating, she will be working for the Colorado Cattlemen’s Agricultural Land Trust, focusing on conservation and improvement of ecological value on conserved properties. She is passionate about providing farmers and ranchers with the tools to enact water management systems that better support agriculture operations and conserve land in perpetuity.
“At Rock Bottom Ranch, I learned about the ecological and political challenges facing farmers. I didn’t just learn farming practices, but I got involved with the agriculture community and how it fits into larger systems,” she said. “I am pursuing this master’s work focused on agricultural land and a career positioned in agriculture conservation, all as a direct result of my time at Rock Bottom Ranch.”
She notes that mentorship from the livestock crew and ranch leadership was intrinsic to her experience.
“In addition to being great friends, their mentorship has lasted long beyond the season that I was there. They have been supportive of me getting involved with the Rocky Mountain Farmers Union. They have taught me what it means to be a steward and care for a piece of land and the community.”
always seek to bring our community together, whether it’s through educational experiences inspiring environmental stewardship or building connections between members, donors, ACES staff, and folks throughout the Roaring Fork Valley. Over the past year, our events continued to celebrate ACES’ mission and goal of promoting positive change in the environment through conversation and education on pressing environmental topics of our time. These events wouldn’t be possible without the support of our partners and sponsors.
“Here we are, the most clever species ever to have lived. So how is it we can destroy the only planet we have?”
- Dr. Jane Goodall
ACES hosted Dr. Jane Goodall—a scientist, ethologist, conservationist, and United Nations Messenger of Peace–in the Roaring Fork Valley this year, where she shared her message of hope with youth in Aspen, Carbondale, and Glenwood Springs. Dr. Goodall has dedicated her life’s work to meaningful, positive change that creates a better world for people, other animals, and the planet we share, through her nonprofit, the Jane Goodall Institute. Her work is in line with ACES’ mission to educate for environmental responsibility. She is a leading force in the environmental movement for change, specifically through her youth-led global community action program, Roots & Shoots, where participants identify and address problems in their communities while becoming the compassionate citizens our planet needs. Dr. Goodall’s main message from her visit is that everything is connected, everyone can make a difference, and “there is always a way forward.”
Naturalist Scott Weidensaul, author of over 30 books and a Pulitzer Prize finalist, shared his passions for wildlife conservation and ornithology through a discussion of his most recent book, A World on the Wing. He underscored the miracle of bird physiology, and shed light on the shocking 2019 research that revealed we lost one-third of America’s bird population through habitat fragmentation and loss. Weidensaul explained that if given a fighting chance, birds will make a not-so-surprising recovery. He gave us concrete action items to take as conservationists, including getting involved in planning and zoning commissions to bring a conservation perspective to conversations on development. This lecture is made possible each year by the Catto family.
ACES hosted the “Living with Wolves: Coexistence in Colorado” event to expand the understanding of reintroducing wolves to Colorado and provide locals with information necessary to coexist with the species. Conservation biologist and wildlife ecologist Joanna E. Lambert started the event with a presentation about the shared history between humans and wolves in the Northern Hemisphere. John Calfa III from the Wolf Connection podcast then moderated a panel discussion with multiple stakeholder representatives, including Colorado Parks & Wildlife, ranchers, and experts in endangered species and land management. All speakers shared their unique perspectives on the voted-upon upcoming wolf reintroduction. Colorado Parks and Wildlife has since released ten wolves from Oregon in Colorado, and we are now seeing wolf activity in parts of the White-Yampa River, North Platte River, and Colorado River Headwaters basins.
ACES’ only annual fundraising event, An Evening on the Lake, raises critical funds for ACES environmental education programs and our operating budget. The 2023 Elizabeth Paepcke Visionary Award Honoree, Elizabeth Kolbert, renowned climate journalist and author, gave a free public lecture to a packed audience at the Elizabeth Paepcke Auditorium the day after our benefit. The Pulitzer Prize-winning journalist highlighted humanity’s outsized impact on Earth and the unforeseen consequences of human activity, which she describes in her new book, Under a White Sky. Amid an escalating climate crisis, Kolbert’s talk underscored the urgent question: what can we do to mitigate the devastating changes we’ve set in motion, and how do we do so without further harming our ecosystems? This lecture is made possible each year by the Nitze family.
Advancing Safe Passages in the Roaring Fork Valley with Cecily DeAngelo and Julia Kintsch
This talk was a solutions-oriented conversation around promoting connectivity for wildlife corridors across roadways, preventing wildlife-vehicle collisions, and prioritizing the safety of wildlife and motorists, in Colorado and, more specifically, in the Roaring Fork Valley.
All of our Naturalist Nights talks can be viewed for free on the ACES YouTube channel or on our website, where you can watch the full presentation.
“I didn’t realize wildlife collisions and horrific roadkill were something we could change, and the moment that I realized this was a very solvable problem, it lit a fire in me to do something about it.”
-Cecily DeAngelo, Founder of Roaring Fork Safe Passages•Ancient Wetlands: Their Essential Value and Threats in Our Warming World with Delia Malone
•The First Ascent: Over Ten Thousand Years of Native American Occupation in the Colorado Mountains with Jason LaBelle
•The Science of Coexisting with Black Bears in Colorado: with Dr. Stewart Breck
•Birds of Aspen and the Roaring Fork Valley: with Mark Fuller and Rebecca Weiss
Conservation & Climate in the Peruvian Amazon:
Observations and Revelations from the Cloud Forest to the Tropics with Isa Catto and Daniel Shaw
Skiing in the Antarctic Peninsula with Samantha Podhurst
• Colorado’s Third Congressional District: A 24,000-Mile, Father-Son Journey with Adam and Felix Frisch
• If You Want to Go Far, Go Together: Finding the “We” in Individual Sports with Jeff Colt
• From the Black Forest to the Black Sea: 1900 Miles Across Europe on Human-Powered Bikes with Craig and Pamela Mackey
• Avalanche Dreams: A Ski Mountaineer’s Life with Lou Dawson
• Perspectives from the Trail: The Miles that Counted Most with Challenge Aspen
• Homecoming: Ski Mountaineering in the Chilean Andes with Aidan Goldie-Ahumada
• Corsets to Harnesses: A Reflection on Women’s Climbing History from Our Adventures in Corsica and Beyond with Ruth Brown and Kim Levin
Throughout the year, ACES hosts many other engaging events that strive to connect the unique community of the Roaring Fork Valley with our mission.
Farm-to-Table Dinners
Harvest Party
Picnic on the Preserve Raptor Fair
Stars Above Aspen
*Naturalist Nights is a series in partnership with Wilderness Workshop and Roaring Fork Audubon.
**Wild Perspectives is a series in partnership with The Collective Snowmass.
A primary goal for our three sites is to provide unparalleled educational experiences that establish each ACES site as a community destination for exploring nature, agriculture, and sustainability, as well as a place to enjoy the outdoors. ACES’ 2020 “Protecting the Future” Capital Campaign succeeded in raising $12.5 million to improve our visitor centers, site infrastructure, and programs. Below is an update on our progress:
Regional Forest Health Restoration:
• Planning prescribed burns in Aspen and the surrounding areas
• Distributed more MCH pheromone packets to protect high-value tree species from beetle infestation on the front side of Aspen Mountain
• With our partners, ACES facilitated two 900acre prescribed burns in the Hunter Creek Valley, along with several mechanical vegetation treatments that mimic fire
• Expanded ACES’ Forest Health Index website statewide and created State of the Forest Reports for other watersheds to promote policy change
Education:
• Increased the size of our education team, adding two full- and two part-time educator positions
• Expanded outdoor field program locations including East Elk Creek, Silt River Preserve, Rifle Falls State Park, and Sunlight Mountain
• Supported Basalt High School’s expanded experiential education program
• Completed educator housing in Carbondale for four educators who teach environmental education in the Roaring Fork and Garfield Re-2 school districts
ACES is celebrating 55 years this year! 2024 is the most exciting time in our organization’s history, as all three of our sites will be fully operational. We are so excited to continue sharing ACES’ three unique sites with locals and visitors alike—connecting people with nature, agriculture, and education.
• Completed renovation of the 70-year-old Catto Center at Toklat wilderness retreat center
• Developed the Riverdance property near Toklat into an outdoor education hub
• Installed a new roof on the visitor center and the Kanders Family Science Teaching Lab exhibit
• Constructed a new entrance for pickup and drop-off for increased site accessibility, public education, and to ensure visitor safety
• Conducted a five-acre wetlands restoration to enhance existing habitat and reintroduce native plant species
Additional Hallam Lake visitor center renovations will occur next winter and include improvements to office, classroom, and meeting spaces.
• Completed a field study center building renovation, constructed a chicken and egg processing facility, provided new employee housing, and increased food production
• Instituted our Farmer Training Program, which now includes new farm tours, workshops, classroom training, and 40 regenerative agriculture education videos that seek to enrich the learning experience
• Planted a Native Habitat Garden to educate visitors about the importance of pollinators and native species gardening
In the coming year, we will purchase more permanent multi-use housing for farmers, naturalists, educators, and administrative staff.
ACES contributes to a national agenda for increased environmental awareness while preserving our local natural habitats, protecting wildlife, and creating an environmentally educated society. We need policy and action to solve the climate crisis, but we also need to start seeing ourselves as part of the broader ecosystem and break down ideas of separation and superiority. Nature centers play a vital role in our communities by promoting place-based education, healthy ecosystems, scientific research, and community engagement. At ACES, we foster a deeper connection to nature for people of all ages and remind everyone to embrace our interconnectedness with the natural world.
ACES membership provides access to valuable resources, educational programs, and events that promote local, national, and global environmental awareness and conservation efforts. Being a member of ACES also provides a sense of belonging and empowerment, allowing our supporters to actively participate in initiatives addressing today’s environmental issues and ultimately playing a direct role in creating a healthier and more resilient community for future generations.
“My first memory of ACES is tied to arriving in Aspen for the first time in 2008 as a summer Naturalist. Adam McCurdy was on the same flight as me, and Jim Kravitz met us at the airport and we made our way to the condo at Hunter Creek. The next day, I was introduced to Hallam Lake for the first time.
ACES is what brought me to the Roaring Fork Valley and introduced me to the community here. I love supporting ACES’ mission to continue running a Naturalist program every summer and allowing college students and young graduates to experience the Roaring Fork Valley as I did. I believe the work ACES does in schools from Aspen to Rifle is imperative for teaching the next generation about the importance of our natural world. I am happy to support the organization on an annual basis. Coming from another nonprofit, I recognize that continued support, no matter what level, is such a great way of supporting any organization. I would encourage everyone to give to and support ACES.”
We would like to express our gratitude to the contributors who generously supported ACES’ annual fund, Capital Campaign, Summer Benefit, and special projects between January 1, 2023, and December 31, 2023. Recognition in the ACES annual report is a membership benefit of the Bighorn Sheep membership level ($300) and above.
Chairman’s Circle ($50,000 & Above)
Anonymous (2)
Catena Foundation
Catto Shaw Foundation
Jan and Neal Dempsey
Fidel Duke
Jonathan D + Mark C. Lewis Foundation, Aspen Community Foundation
Melony and Adam Lewis
Living Peace Foundation
Merlin Foundation
Gina and Jerry Murdock
Penner Family Foundation
Pettit Foundation
Margot and Thomas Pritzker
Mr. Richard Riffel
Barbara and Don Rosenberg
Restorer’s Circle ($25,000-$49,999)
Anonymous
Argonautica
Jacolyn and John Bucksbaum
Ruth Turnquist Carver and Jim Schmidt
Charles William Cole
Laurence and Lori Fink
Soledad and Robert Hurst
Felicity Huffman and Bill Macy
Malott Family Foundation
Lisa and Willem Mesdag
Pat and Mary Scanlan
Teach a Man to Fish Foundation
Tillie Walton
Elisha and Jeffrey Zander
Sara and Nat Zilkha
($10,000-$24,999)
Aspen Business Center Foundation
Aspen Community Foundation
Susannah and Jim Adelson
Lisa and David Alpern
Meredith Bell
Amy and Gilchrist Berg
Jackie and Mike Bezos
Brittingham Family Foundation
Julie and Randall Brodsky
Karen Brooks
Sarah Broughton and John Rowland
Ruth H. Brown Foundation
Carla and John Brozovich
Jessica and Bill Budinger
Kristina and William Catto
Sarah Challinor
The Chicago Community Foundation
Janet Clark
City of Aspen
Dorian and Pat Damoorgian
Sarah and Chris Daniels
Linda and Ben Davis
Marsha and David Dowler
The Environmental Foundation
Shel and Clayton Erikson
Muriel and John Eulich
Suzanne Farver and Clint VanZee
Eliza Flug
Ann and Tom Friedman
Jessica and John Fullerton
Jennifer and Greg Goldfarb
Sherri and Dean Goodwin
Kristen and Wally Graham
Margaret and Bill Greenfield
Mary and Jim Griffith
Perry and Michael Griffith
Jody Guralnick and Michael Lipkin
Ellen Bronfman Hauptman and Andrew Hauptman
Kathy and William Hegberg
Amanda and Ashton Hudson
Carol and Michael Hundert
Woody and Gayle Hunt Family Foundation
J & M Foundation
Allison and Warren Kanders
Ronald and Eva Kinney Family Foundation
Francine and Tag Liebel
Daniel and Margaret Loeb
Susanne and Bill Losch
Gloria and James Marcus
Diane Moore and Joel Sax
David Newberger
Ilona and Chad Oppenheim
Kristi and Tom Patterson
Melinda and Norman Payson
Pitkin County Healthy Community Fund
Aimee and Ben Pritzker
Ilona Nemeth-Quasha and Alan Quasha
The Rodel Foundation
Polly Scott and Jim Maher
Wendy and Mike Sidley
Alison Teal and Sam Brown
Katherine Tomford and David Grossman
Rob Walton Foundation
Katie and Nick Abrams
Lydia and Bill Addy
CC and Stewart Armstrong
Aspen Chamber Resort Association
Jody and Jeffrey Black
Andrea Booher
Ed Bradley Family Foundation
Gary and Sylvie Crum
Mr. and Mrs. David Dillon
Muffy and Andy DiSabatino
Laura Donnelley
Terry and Wally Durham
Marcy and Leo Edelstein
Tracy and Bubba Eggleston
Helen and Dave Feinberg
Kristen and Andrew Firman
Margot and Richard Hampleman
Bush Helzberg*
Rebecca Henry
Noelle and Cecil Hernandez
Ambassador Bruce and Vicki Heyman
Toni and Daniel Hunt
Rusty and John Jaggers
Shana and Clint Johnstone
Denise Jurgens and Kevin Messerschmidt
The Knapp Fund
Anne Kerr L’Heureux and Matthew L’Heureux
Mary Schmidt-Libby and Russell Libby
Shelly and Tony Malkin
Patricia and Ricardo Marino
Janna and Tom McNicholas
Andrea and Bobby McTamaney
Martha and Adam Metz
Marcie and Robert Musser
Elizabeth Nordstrom
Oak Lodge Foundation
Tamar and Stephen Olitsky
Alexandra and Gunnar Sachs
Lorraine and Mark Schapiro
Betty* and Lloyd Schermer
Jacqie and Neal Shear
Rachel and Tony Sherman
Wendy and David Smith
Linda and Jerry Strickland
Mary Ann and Ray Tittle
Misty and Tyson Weihs
Carrie and Joe Wells
Heather and Phillip Wilhelm
Lisa and George Baker
Cara and Robert Barnes
Carrie and Stephen Bellotti
Coventry and Davis Berg
Sallie and Thomas Bernard
Nancy and Stephen Bernstein
Lucy Tremols Bright and Galen Bright
Nicole Birkhold and Gregg Heil
Rona and Jeff Citrin
Chinook Charitable Foundation
Carol Craig
Ann Dahmer and Kevin Geiser
Jamie and Steven Dell
Andy Docken
Jennifer DuBrul and Derek Foster
Dubose Family Foundation
Lauren and Ryan Elston
Joan Fabry and Michael Klein
Fergus Foundation
Donna and Gary Freedman
Barbara Glass and Rich Vossler
Carolyn and Tim Hagist
Leelee and Bill Harriman
Louise and Phil Hoversten
Mike and Laura Kaplan
Katherine Kendrick
Diane and Jack Kennedy
Nina Kjellson
Kurt Lageschulte and Jessica Rothstein
Christine and Andrew Light
Lux Household
Judy and Robbie Mann
Liza and John Mauck
David Moray
Lynn Nichols and Jim Gilchrist
Clarisse Perrette
Hensley and James Peterson
Ken and Emily Ransford
Phillip and Emily Ring
Stephen Sander
Lisa and David Schiff
Rachel Shechtman
Jennifer and Daniel Shorr
Kate and Phillip Spanton
Morgan and Shawn Stephenson
Steve Stunda
Allison and Ben Tiller
Patsy Tisch
Nancy and Charles Wall
Adelaide and Michael Waters
Jay and Patti Webster
Mr. and Mrs. Edward White
Alison Coenen Abrams and Dale Abrams
Vanessa and Karl Adam
Julia and Tomakin Archambault
Claudia and Richard Balderston
Lissa Ballinger
Annabelle Bond and Ken Hitchner
Connie and Buddy Bates
Barbara and Bruce Berger
BF Foundation
Rachael and Brian Brady
Morgan and Matthew Brown
Ruthie Burrus
Marla and Lawrence Butler
David Byrnes
Lisa and Michael Cader
Cynthia Calvin and Mac McShane
Laurel and John Catto
Laurence Cohen
Sally R. Cole
David Corbin
Alicia and Jon Creyts
Bobbi Cunningham and Michael Ortiz
Natasha and Antal Desai
Chelsea and Chace Dillon
Liz Coplon and Carl Eichstaedt
Orly Friedman and Matthew Miller
Dawn Ford and Eric Doppstadt
Christine and Bryan Gieszl
Neil Glaser and Richie Lin
Joanna Golden
Patricia Goudvis
Mr. and Mrs. Ronald Greenberg
Chris and Gary Hartman
Shirley and Barnett Helzberg
Casady Henry
Nancy and Charles Hess
Mary and Dan Horn
Wendy and Stephen Huber
Janis and George Huggins
Tavia and Clark Hunt
Barbara Reid and David Hyman
Nina and Tim Itin
Mr. & Mrs. Rodney Jacobs
Caroline and Hugh Kaplan
Ali and Alex Kohner
Laura and Gary Lauder
Linda Lay
Lee and Zachry Lee
Rebecca and Doug Leibinger
Kim Lewis
Nicole Longnecker and David Pesikoff
Marlene Malek
Pete McBride
Joe McGuire and Matthew Tenzin
Barbara and John Patrick McMahon
Agustina Mistretta and Timothy Sack
Denise Monteleone
Jennifer Monteleone
Kristy Mora
Constance Hoguet Neel and Richard Neel
Ann Richards Nitze
Carol Pasternak
Jan and Jim Patterson
Carol Hood Peterson and Brooke A. Peterson
Noah Pollack
Rahm Household
Cari and Garrett Reuss
Louisa and James Rudolph
Shereen and Jordan Sarick
Nina and Joshua Saslove
Kirsten and Chad Schmit
Deborah and John Scott
Phyllis and David Scruggs
Carole and Gordon Segal
Layne and Mike Shea
Cyrena Torrey Simons
Christina Smith
Glenn Sonnenberg
Jill St. John and Robert Wagner
Shelley Senterfitt and Ken Canfield
William Lundeen Stirling
Sally Pendleton Thompson
Arden and Bob Travers
Barbara Trueman
Ruth and Bob Wade
Kay Watson
Alison and Jonathan Wente
Sarah and Robert Woods
Jessica Wu and Florin Toader
Alison and Boniface Zaino
Shari Applebaum
Nadine Asin and Thomas Van Straaten
Suzanne Atkinson
The Austin Memorial Foundation
Lisa and Steve Ayres
Steve Barsanti
Justin Bayne
Gina Berko and David Fleisher
Carolyn S. Bucksbaum
Tony and Terri Caine
Christina and Juan Calle
Betsy and Jim Chaffin
Donna and Steve Chase
Nicole DeWolf
Elizabeth Epstein and Stuart Bohart
Elizabeth and George Farish
Carol and Jim Farnsworth
Darylynn and Tom Fellman
Susanne and George Fesus
Judith Fisher
Ruth and Dan Flournoy
Barbara Fretz
Laurel Gilbert and Bruce Etkin
Dr. Lisa Glazer and Dr. Jeff Braun Glazer
Thorey and Barry Goldstein
Karen and John Gray-Krehbiel
Nicholas Groos
Roger Gurrentz
Whitney Wolfe Herd and Michael Herd
Annabelle Bond and Ken Hitchner
Linda and Gregg Hollomon
Cindy Houben
Janet A. Johnson and Mary Ellis
Rita Justice
Wendy and Todd Kennedy
Sandra and Michael Klein
Tricia and Rich Kolsby
Phyllis Lally and Leonard Seevers
Sheila and Bill Lambert
Elaine Le Buhn
Peter Looram
Jessica Kaplan Lundevall and Torjus Lundevall
Anne Welsh McNulty
Martha Farish Oti
Karen and Richard Parker
Brooke A. Peterson and Carol Hood Peterson
Pitkin County Board of County Commissioners
Missy and Steve Prudden
Paula Rhodes
Katherine Roberts
Beverly and Howard Robinson
Ken Robinson
Kaja Rumney
Sheryl Schreiber
Sallie Shatz
Town of Snowmass Village
Pamela Stanton and Jack O’Donnell
Gretchen A. Straub
Tamara Susa
The Tucker Family Foundation
Angi Wang
Jane and Bruce Warren
Kathy and Roger Wells
Barbara and Charles Winton
Carolyn Workman and Kurt Wacker
Martha and Gerry Wyrsch
Bighorn Sheep ($300-$599)
Sherry and Duane Abbott
Julie and Harrison Augur
Carol and Robert Auld
Kimberly Bakker
Julia and Ted Behar
Donna and Skip Behrhorst
Amy and Neal Beidleman
Summer and Erik Berg
Kathy and Drew Berkman
Drs. Paula and William Bernstein
Nicole and Matthew Bickford
Sharon Bistline
Sarah Blaine
ACES membership spans across the country, but the majority of our members reside in the Roaring Fork Valley. 58% of our members are local to the Roaring Fork Valley, 77% of our members reside in Colorado, and another 23% contribute to our organization from out of state.
Liz and John Bokram
Leslie Boyer and Bill Stein
Ruthie Brown
Andrea and Chris Bryan
Bryant Household
Tina and Geoff Buchheister
Barbara Bussell
Heather Cabot and Gaelen Means
Jody and Tom Cardamone
Cinda and Michael Carron
Cassetta Household
Gretchen Cole and Craig Corona
Anne and Edward Colloton
Annie Cooke
Liz Coplon and Carl Eichstaedt
Jeanette Darnauer and Rob Merritt
Amber and Ted Davenport
Elese and Gusty Denis
Anakarina Dingle
Ashley Dopf
Hall R. Easton
Kim Edwards and Jesse Bouchard
Christopher Ellis-Ferrara
Alissa and David Farrell
Lynne Feigenbaum and Steven Wolff
Sherry Ferguson and Robert Zoellick
Patty and Peter Findlay
Sara Finkle
Sistie Fischer
Karen Freedman
Nikola and Todd Freeman
Kathy Fry and Brett Beavers
Lauren Garrity
Alyson and Justin Gish
Kathleen and John Goodin
Raleigh Gray
Eileen and Richard Greenberg
Lisa and Bill Guth
Lisa and Michael Haisfield
Bart Harris
Trautlinde Heater
Sue Helm
Marilyn and Bayard Hovdesven
Hughes Household
Sandy and Peter Johnson
Alexandra Karlinski
Donna and Patrick Keelty
Debora Kelly and Scott Messina
Meg and Phil Kendall
Alexandra Kendrick
Marianne* and Richard Kipper
Missy and Chris Klug
Polly Koenigsknecht
Judy Kravitz
Dr. and Mrs. Tom Kurt
Dr. and Mrs. Patrick Lally
Kristen and David Lambert
Kirsten and Alan Langohr
Mark Lantz
Nancy Lazar and George Zachar
Jessica Leeke
Mr. and Mrs. James Lehmann
Suzanne Leydecker
Daylene and Gary Lichtenwalter
Elizabeth and Adam Lowenstein
Lynn and Ned Lubell
Carol and Patrick Luddy
Liz Lynch
Pamela and Craig Mackey
Mirte Mallory and Philip Jeffreys
Katharine Mann
Martin Manosevitz
Jim Martin
Susan and Lawrence Marx
Dee Matthews and Richard Thompson
Monica Mayotte
Rebecca McCurdy and Edgar Toledano
Sunni McBride
Mcclennen Household
Sherry and Gerald Merfish
Kevin Millin
Mary and Roger Moyer
Melanie Muss and Tracy Nichols
Jacqueline Neuwirth Swire
Allison and David Niles
Susan Okie Lindenaj
Nedra and Mark Oren
Ruth Owens
Judy Wender Buzz Patten
Ali and David Phillips
Jodi and Bill Pinkham
Gloria Pryzant
Nan and Robert Ratner
The Rehl Family
Noelle Rohde
Margaret and Dwayne Romero
Ivette and Andy Rothschild
Oakleigh and Tobin Ryan
Alma and Barry Salky
Linda and Jay Sandrich
Auden Schendler and Ellen Freedman
Marcelina and Joshua Seymour
Nancy and Barry Shapiro
Dr. and Mrs. Lisa and Brian Shaw
Claire Shope
Tiffany Sinay
Anda and Ryan Smalls
Dawnette Smith
Lynn Smith
Sandra Smith
Tami Solondz
Erin Spiess
Jim Stafford
Sandy and Steve Stay
Danette Stephens
Katya Sternberg
Elizabeth and Flynn Stewart-Severy
Michael Stolper
Natasha and Clifford Stowe
Wendi Sturgis
Susie Taylor
Lois and Doug Teegarden
Melissa Temple and Morgan Whittemore
Victoria Thomas and Tom Davies
Anne Tobey
Elissa Topol and A. Lee Osterman
Lea Tucker
Jennifer Turkat
Mike Uncapher
Janet Van Dyke
Becky and Craig Ward
Kristin Klingbeil-Weis and Karl Weis
Susan Welsch
Carlotta and Wendell Willke
Jessica Wildman Dubin
Susan Wolf and Doug MacLean
Suzanne Wolff and Gary Tennenbaum
* Marks donors that have passed away in the last year.
ACES’ continued success in community engagement, fundraising efforts, and program offerings grew revenue by a total of 37% over the last fiscal year. Operating expenses have risen significantly in the last fiscal year, with educational expenses growing 26% and comprising 76% of all operating expenses.
ACES’ financial position continues to strengthen, enabling the organization to expand our housing portfolio and staff while providing a meaningful runway for the opening of The Catto Center at Toklat.
NOTE: The 2021 contributions line item includes the 50th Anniversary Capital Campaign funds raised.
Chris Lane
Chief Executive Officer
Adam McCurdy
Climate & Forest Programs Director
Andrea Aust
Education Director
Brodie Kettelkamp
Finance & Operations Director
Christy Mahon
Development Director
Jim Kravitz
Naturalist Programs Director
Morgan Gosda
Communications Director
Patrick Banks
Rock Bottom Ranch Director
Phebe Meyers
Community Programs Director
Alyssa Barsanti
Farmer Training Facilitator
Emily Williams
Field Programs Coordinator
Greta Brown
Marketing Manager
Jack Osius
Development Coordinator
Kamille Winslow
School Programs Manager
Lillian Bell
Community Programs Coordinator, Hallam Lake & Toklat
Mariah Foley
Agriculture Manager
Raychl Keeling
Events Manager
Trisha Lavery
Community Programs Coordinator, Rock Bottom Ranch
ACES is committed to providing an equitable and inclusive environment for our staff, program participants, and community. We are continually working toward this through:
• Comprehensive training for our staff and board of trustees
• Updating policies and practices in order to better recruit and retain employees who are representative of our diverse community
• Encouraging innovative ideas from all areas of the organization
• Collaborating with local organizations to provide meaningful opportunities for all Roaring Fork Valley residents to engage with ACES
• Provided ACES staff with a professional development budget for Spanish classes
• Formed an internal DEI committee, meeting monthly, that includes representation from all areas and levels of the organization including the board of trustees
• Integrated organizational DEI goals throughout ACES’ new strategic plan for 2024-2026
• Expanded ACES Education programs to schools in the Re-2 School District, including the addition of a partner school where we teach full time
• Provided scholarships (up to 100% of the cost) for approximately 75% of school groups participating in ACES field programs
• Partnered with local organizations to make ACES events more welcoming and relevant for our diverse community
ACES’ corporate partnerships seek to involve businesses that make our community a more inviting and environmentally conscious place. These donors contributed to ACES and/or sponsored an ACES event between January 1, 2023, and December 31, 2023.
Benefactor ($10,000 and above)
Alpine Bank
Bethel Party Rentals
MacDonald Hardwoods Co. Inc.
Innovator ($5,000-$9,999)
Aspen Chamber Resort Association
Aspen Skiing Company
Aspen Thrift Shop
Aspen Vodka
Field 2 Fork Kitchen
Forum Phi
Harriman Construction, Inc.
Martin Woods Winery
Obermeyer Wood Investment Counsel
Reese Henry and Company, Inc.
Advocate ( $2,500-$4,999)
Aspen Public Radio
Black Diamond/Mountain Khaki
Carington Creative
CCY Architects
Chris Klug Properties
FirstBank
Ken Ransford, P.C.
The Little Nell
Steward ($1,000-$2,499)
Aspen Brewing Company
Aspen Daily News
Aspen Times
Be Hippy
Christie’s International Real Estate
Gran Farnum Printing
Of Grape and Grain
Halcyon Productions
Isa Catto Studios
Marble Distillery
North Drinkware
Lead with Love
Ute Mountaineer
Partner ($500-$999)
Alpine Valley Services
Bristlecone Mountain Sports
Fusalp
Eagle Crest Nursery
Town of Basalt
Aspen/Snowmass Area
Ashcroft Ghost Town
Aspen Elementary School
Aspen Meadows
Aspen Mountain
Castle Creek Valley
Toklat
Hallam Lake
Hunter Creek
Independence Pass
Maroon Bells
North Star Nature Preserve
Red Butte
Riverdance
Snowmass Mountain
Basalt Area
Basalt Elementary School
Lake Christine Burn Area
Rock Bottom Ranch
Glenwood Springs Area
Glenwood Springs Community
Art Center
Sunlight Mountain Resort
Rifle/Newcastle Area
East Elk Creek
Kathryn Senor Elementary School
Rifle Falls State Park
Rifle Gap State Park
Silt River Preserve
Daniel Shaw, Board Chair
Adam Lewis
Adelaide Waters
Alex Sanchez
Andrew Docken
Barbara Rosenberg
Ben Pritzker
Brian Brady
Chris Daniels
Colter Van Domelen
Diane Moore
Gina Murdock
Hadley Hentschel
Jennifer Goldfarb
Jerry Murdock
Leslie Lamont
Mark Hamilton
Megan Talarico
Reenie Kinney
Amy and Gilchrist Berg
Jacolyn and John Bucksbaum
Larry and Lori Fink
Allison and Warren Kanders
Melony and Adam Lewis
Margot and Tom Pritzker
Zoe Baird and Bill Bundinger
“The test of a first-rate intelligence is the ability to hold two contradictory thoughts at the same time.”- F. Scott Fitzgerald
The world is registering important progress, but it also faces dire environmental threats. A critical first step is to get people to be ecologically literate. And to do that we must connect this urbanized, overly wired world to nature.