Leadership Team > Mark O’Leary

About Mark O’Leary

States

Michigan, Wisconsin

Contact

D: 608.354.2617

Mark is a Client Solutions Manager and Ecologist based out of Wisconsin with more than 25 years of experience working in the ecological restoration and A&E industry. Mark joined RES in 2020 through the acquisition of Applied Ecological Services (AES), where he served multiple roles, including Principal Ecologist, Branch Office Manager, VP Consulting, and Account Manager. Mark has worked throughout the country as a consulting ecologist, where he has provided scientific and project leadership on ecological planning, design, mitigation, and permitting. He has designed and implemented numerous ecological restoration and mitigation plans for wetland, prairie, woodland, and savanna communities and has conducted hundreds of national resources assessments and wetland delineations. He uses this experience at RES to creatively facilitate solutions for clients and resolve conflicts among clients, regulators, and natural resources. Mark is heavily involved in water quality trading for water quality compliance, large-scale restoration, and green infrastructure.

Mark earned his BA in English from Miami University and his MS in Zoology from Southern Illinois University-Carbondale with an emphasis on wetland and wildlife ecology.