Sheila Colla, York University Professor and Renowned Pollinator Conservationist, Dies Suddenly at 43
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It is with great sadness that we announce the sudden and unexpected passing of Dr. Sheila Rafaella Colla of Toronto, Ontario—a dedicated Associate Professor in York University’s Faculty of Environmental and Urban Change and a passionate conservation scientist whose life’s work championed native pollinators, wildlife, and environmental justice.
🐝 A Leader in Pollinator Conservation
Dr. Colla was internationally recognized for her groundbreaking research into wild bees and native pollinators. She co-led York University’s Bee Research Organization (BeeC) and authored critical studies on bumblebee declines, community science approaches, and pollinator habitat restoration Her publications shaped both academic dialogue and tangible conservation policy in North America, influencing the way researchers, communities, and policymakers coalesce around biodiversity stewardship.
Advocate for Environment and Equity
Beyond her scientific achievements, Sheila was an environmental advocate and vocal champion for social justice. Her work explored the intersection of ecology, equity, and community engagement . She believed passionately in inclusive conservation—ensuring that science, policymaking, and activism reflected diverse voices and uplifted marginalized communities.
A Vibrant Soul and Mentor
Colleagues and students at York University remember Sheila for her warmth, mentorship, and unwavering integrity. From her formative days as an assistant professor to her later role guiding graduate researchers, she always led by example—blending rigorous inquiry with compassion, humility, and joy.
Personal Life and Legacy
Born on May 4, 1982, Sheila was the beloved partner of Marc Michalak and loving mother to Tristan and Rowan She also leaves behind her parents, Daniel and Marlene Colla, and her sister. Her sudden passing on July 6, 2025, at the age of 43, has left a profound void
Beyond her role as a scientist and educator, Sheila was a gardener, musician, and a dedicated friend—someone who brought curiosity, kindness, and vibrancy into every room she entered.
Honoring Dr. Sheila Colla
A celebration of Dr. Colla’s life and contributions will be organized by her family, colleagues, and the BeeC community. Details will be shared soon. In lieu of flowers, the family encourages donations to pollinator conservation organizations or York University’s environmental programs, in tribute to her passion and enduring impact.
Remembering Her Light
Sheila Colla’s sudden departure is a profound loss for Toronto, York University, the scientific community, and all who knew her. Yet her legacy—rooted in meticulous research, advocacy for biodiversity, and a steadfast belief in justice—will live on in the policies she influenced, the students she mentored, and the ecosystems she fought to protect.
Rest in power, Dr. Colla. Your work saved lives and your spirit will continue to inspire generations to come.