Lizzy Pennock

Legal Fellow

Lizzy joined WildEarth Guardians as a volunteer in September 2019 during her second year of law school. Lizzy is a Diehl Environmental Law Fellow focused on wildlife protection. She grew up in Colorado, where she developed her passion for nature and exploring the outdoors. Lizzy earned her Bachelor of Science in Marine Science at the University of Hawai`i and her J.D. from Lewis and Clark Law School with a certificate in Environmental and Natural Resources Law. She was awarded the 2021 Environmental, Natural Resources, and Energy Law Leadership Award and was elected to the Cornelius Honor Society. She did as much pro bono as possible during law school and worked with Crag Law Center and the Center for Biological Diversity, focusing on salmon protection. She currently resides on the Oregon coast with her partner and two labs, where she loves to hike, bake, and spend time at the beach.

Tricia Snyder

Rio Grande Campaigner

Tricia, as a child of military parents, spent much of her childhood moving frequently in the U.S. and abroad, but calls El Paso, TX home. Growing up on the banks of the (often dry) Rio Grande and the water scarcity of the Southwest sparked a life-long interest in finding solutions for water conflicts in the arid and semi-arid American West. Tricia received a B.S. in Geography with a focus on human-environment connection from New Mexico State University. Her research while there centered on water management across borders. She spent 5 years working with the Southwest Environmental Center working to protect and restore the wildlife and wild places of the Southwest borderlands, particularly focused on the recovery of the Mexican gray wolf. In 2015, Tricia moved to Washington state to pursue a graduate degree, receiving an M.S. in Cultural and Environmental Resource Management from Central Washington University. Her thesis, which conducted an adaptive capacity assessment of the Upper Klamath Basin, utilized both quantitative and qualitative research methods. She worked for nearly four years on salmon recovery as the Lead Entity Coordinator for the Yakima Basin in central Washington, bringing together a diverse group of interests and perspectives. Tricia joined WildEarth Guardians as the Rio Grande Campaigner in 2021.

Matt Nykiel

Climate & Energy Program Attorney

Matt is a Climate & Energy program attorney for WildEarth Guardians. Matt's work focuses on protecting New Mexico and communities across the West from the impacts of oil and gas extraction and use. He became concerned about fossil fuels after witnessing the effects of climate change as a wildland firefighter with the U.S. Forest Service. Seeking opportunities to protect public lands and the environment generally, Matt went to law school at the University of Colorado. After graduating, he clerked for a state district court judge in Colorado and then relocated an hour south of the Canadian Border, in Idaho, to work on energy and water quality issues with the Idaho Conservation League. Matt, his partner, Ruth, and their pup, Frisbee, love being back in Southwest and spending time in the mountains and on the water.

Betsy Gaines Quammen

Member, Board of Directors

Betsy Gaines Quammen is a historian and conservationist. She received a doctorate in Environmental History from Montana State University in 2017, her dissertation focusing on Mormon settlement and public land conflicts. She has studied various religious traditions over the years, with particular attention to how cultures view landscape and wildlife. The rural American West, pastoral communities of northern Mongolia, and the grasslands of East Africa have been her main areas of interest. After college in Colorado, caretaking for a bed and breakfast in Mosier, Oregon, and serving breakfasts at a cafe in Kanab, Utah, Betsy settled in Bozeman, Montana, where she now lives with her husband, writer David Quammen, two huge dogs, an overweight cat, and a pretty big python named Boots. She is the author of American Zion: Cliven Bundy, God, and Public Lands in the West.

Leia Barnett

Greater Gila Campaigner

Born and raised in the foothills and arroyos of the Sangre de Cristo mountains, Leia is thrilled to bring her love and deep reverence for the high desert country of the Southwest to the Greater Gila campaign. Leia graduated summa cum laude from the University of New Mexico’s cultural anthropology program, where she focused on the ways the more-than-human world can be reimagined through anthropological theory and practice. When she’s not endeavoring to understand the complexities of a successful conservation campaign, Leia can be found mountain-side or river-side, praising the feathered and four-legged ones, and planning her next epic snack.

Rebecca Vitale Mandich

Member, Board of Directors

Rebecca Vitale Mandich of Palo Alto, CA and Tesuque, NM, was called early to the environmental movement to give voice to the voiceless. An advocate since the 70s, she received her degree in Environmental Studies taught by some of the big thinkers of the time such as Paul Ehrlich, Stewart Brand, Dr. Richard Leakey, Alan Chadwick, and Dr. Donald Aitken, who founded the program at SJSUC as one of first in the nation. Utilizing that education, coupled with commitment and inspiration, Rebecca started taking actions from working in one of the first solar energy homes to working on ballot measures for better public transportation systems in the Bay Area. She assisted in opening the first Spanish-speaking office for Clinton/Gore campaign in 1992 and registered many in the local Hispanic community, hosting then candidate VP Gore to discuss the environment and community issues. In the meantime, she married Mitch Mandich and has two grown children, Matthew and Madeleine, and various dogs and cats have graced their lives. Having traveled extensively, her favorite escape is camping in our national parks and on public monuments and lands, where she has experienced all manner of wildlife and wild places. She became acquainted with WildEarth Guardians about six years ago when she read an article in the San Francisco Chronicle about their lawsuit against U.S. Fish and Wildlife services regarding wolves. She sent them a letter and a fast friendship formed over their mutual love of all things wild. Rebecca sees much hope in the future of the environmental movement that began with “Save the Whales" to now promoting a food and energy paradigm for the sustainability of natural resources. A deep political will and an openness to examine new ideas dictate her thinking. She feels that embracing environmental changes through engagement, both politically and through grassroots efforts, are paramount for the evolution of a responsible species to continue the ride on, what she affectionately refers to as, Spaceship Earth.

Peter Schoenburg

Treasurer, Board of Directors

Peter Schoenburg is a partner in the Albuquerque law offices of Rothstein, Donatelli, Hughes, Dahlstrom, Schoenburg & Bienvenu, LLP. He has practiced criminal defense law in New Mexico since 1978. He received his undergraduate degree at Yale College and his law degree at Rutgers School of Law. A former Federal and State Public Defender, as well as an Assistant Attorney General, since 1993 Peter has worked in private practice defending complex criminal cases in both Federal and State courts. He also regularly represents Native Americans charged with illegal possession of feathers in connection with their religious practices. He has been continuously listed in The Best Lawyers in America - Criminal Defense since 1994. Peter’s love of the wilderness and commitment to its preservation began in his child-hood years in upstate New York. Beginning in law school he worked as an instructor at the Hurricane Island Outward Bound School in Maine and the, now defunct, Southwest Outward Bound School based in Santa Fe. He is an avid rafter, hiker, skier and cyclist.

Nat Cobb

Member, Board of Directors

Nat Cobb joined the Guardians Board in 2010. He grew exploring the outdoor environments in New Mexico, Colorado, and Pakistan. In the 1970’s he worked for five different Outward Bound schools in diverse environments, including three years directing programs in the Gila Wilderness. He also worked as a river guide on the Grand Canyon and in Dinosaur National Monument. A graduate of Fort Lewis College and Harvard Medical School, he recently retired from the Indian Health Service and the Centers for Disease Control, where his work included Family Practice, Emergency Medicine, Research and Epidemiology. He still loves to explore mountains, rivers and deserts by boat, ski, foot, and bicycle. He and his wife actively support and partner with several local farmers in farm-to-table, farm-to-beer mug, and farm-to-wineglass projects. At home on the bank of the Rio Grande in Los Ranchos, NM, he dabbles in native plant landscaping and tries to co-exist with the coyote, geese, beaver, and sandhill cranes who live in his back yard.

Anne Butterfield

Member, Board of Directors

Anne Butterfield lives in Boulder CO. After early years spent in a range of of outdoor environments in the east and west, Anne developed a passion for high altitude. Soon after graduating from Occidental College, she grew through expert skiing, Colorado Outward Bound School, search and rescue work, and serving an archeological surveyor for the US Forest Service in New Mexico. Anne then co-managed Adventure 16 in West LA, a 10,000 square-foot outdoor retail store. Returning to Colorado, she completed a Masters in Creative Writing at CU Boulder and served with Colorado’s 20th Judicial District Attorney’s Office as a victim advocate. Then, for seven years she served as an editorial adviser and opinion columnist at the Boulder Daily Camera, where her writing explored Colorado energy policy and informed Boulder voters through three elections leading to the city's decision to separate legally from Xcel Energy. She comes to Guardians also having served on the board of Clean Energy Action, a non-profit dedicated to educating elected officials, regulators, and the public on the risks of our nation relying so heavily on the faltering coal industry. She is an avid pet & wildlife lover and a big fan of renewable energy having learned so much from her husband Sandy who spent his career in wind energy particularly at the National Renewable Energy Laboratories.

Madeleine Carey

Greater Gila Guardian

Madeleine Carey is the WildEarth Guardians’ Greater Gila Guardian. Born and raised in Albuquerque, Madeleine spent her childhood exploring the Rio Grande and its bosque on foot and on horseback. In May 2014, she graduated from Tufts University in Medford, MA with a degree in Biology and Urban Studies. While at Tufts, she was a four-year member of the Track and Cross Country teams and a trip leader for the Tufts Wilderness Orientation program. During college, Madeleine spent her summers working for the Bosque Ecosystem Monitoring Program, researching American Pika in the Valles Caldera National Preserve and working with NM State Forestry to create a post-wildfire assistance guide. An avid runner and pie baker, Madeleine is always looking for ways to combine adventures with brunch.

Articles by Madeleine

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Marlies Wierenga, M.S.

Pacific Northwest Conservation Manager

Marlies Wierenga is the Pacific Northwest Conservation Manager for WildEarth Guardians, serves under the Wild Places Program Director, and formerly served as WA/OR Coordinator for Wildlands CPR until their merger with WildEarth Guardians in 2013. Marlies has over a decade of experience using her technical, policy and public involvement skills to address watershed and water quality challenges throughout the Pacific Northwest. She has analyzed environmental conditions and developed numerous shoreline, watershed and water quality plans for local and state jurisdictions. Marlies has an undergraduate degree in Environmental Engineering from the University of Arizona and a Master’s in Environmental Studies from the Evergreen State College, where her thesis analyzed the dual mandate of National Parks in Alaska to meet conservation goals and support the subsistence practices of local people (focus was Wrangell-St. Elias National Park).

Articles by Marlies

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Samantha Ruscavage-Barz, Ph.D., J.D.

Legal Director

Samantha Ruscavage-Barz is Legal Director for WildEarth Guardians and has been with the organization for over a decade. She is responsible for coordinating the organization’s litigation strategies, managing and developing staff attorneys, and litigating cases for the Wild Rivers Program. Samantha is a graduate of the University of New Mexico School of Law where she is also an Adjunct Professor teaching Environmental Litigation Drafting and coaching the Environmental Law Moot Court Team. Prior to becoming an attorney, Samantha spent 17 years as an archaeologist in the public and private sectors before attending law school, which led to her interest in advocating for and effecting protection of air and water, community health, cultural sites, and public lands ecosystems.

Sarah McMillan, J.D.

Conservation Director

Sarah McMillan grew up reading Ed Abbey by kerosene lamp at night and exploring the woods, rivers, and mountains of Montana and western Washington by day. She received her B.A. from Williams College and her J.D. from the University of Montana. Sarah is an avid hiker, locavore wannabe (notable downfalls include olive oil, licorice, Marmite, and black tea), and life-long environmentalist. She has worked in private practice and with Western Environmental Law Center to protect the natural world. Her litigation background is broad—from the ESA, CWA, NEPA, NFMA, etc. to protecting Montanans right to a clean and healthful environment, to defending a citizen's initiative that effectively stopped game farm "hunting" in Montana.

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