© Creative Commons Montreal from the Mount Royal

Urban Biodiversity

Urban Sprawl

Three-quarters of all land on Earth has been significantly affected by human activities. Urbanization is increasing, and more than four out of five Canadians are now living in urban centres. As urban and periurban areas grow in population and size, pristine natural spaces disappear. At the same time, cities depend on healthy natural environments to provide benefits, also known as ecosystem services. Ecosystem services include trees producing the oxygen we breathe, bees pollinating the crops we eat and wetlands filtering the water we drink. Restoring nature and enhancing biodiversity is essential to helping our communities – as well as the people and wildlife who live in them – become resilient to the climate crisis.

Meet Our Experts

    Steve Hamel

    Steve Hamel

    Specialist, Biodiversity Restoration

    Steve Hamel

    Specialist, Biodiversity Restoration

    In collaboration with NGOs, municipalities and other partners, Steve is working to implement habitat restoration strategies for biodiversity in Southern Quebec’s maple forest and right-of-way habitats. He began his career in 1990 in British Columbia, where he carried out inventories of marbled murrelet and forest birds. Since then, he has worked on multiple inventories of birds, bats, fish and other taxonomic groups. Steve holds a Bachelor of Science in biology from UQAM in Montreal.


    Jarmila Becka Lee

    Specialist, Community Action

    Jarmila Becka Lee

    Specialist, Community Action

    Jarmila manages the In the Zone program and works on other community action initiatives that strive to increase Canadians’ engagement with nature, especially in urban areas. Jarmila holds an Honours Bachelor of Science (Environment and Biology) from the University of Toronto.

view more experts

© Santropol-Roulant lady with bin

What Is Urban Biodiversity

Urban biodiversity refers to the variety of living organisms, including their genetic variations, as well as the multiplicity of habitats in and around dense human settlements. (MAMROT, 2013)

Biodiversity is a contraction of “biological diversity.” Biodiversity reflects the number, variety and variability of living organisms in an area. Biodiversity supports everything in nature that we need to survive: food, clean water, medicine, and shelter. As humans continue to put pressure on the planet, using and consuming more resources than ever before, we risk putting the Earth’s magnificent biodiversity at risk.

The Issues Affecting Biodiversity

City growth doubled over the last century; almost 216,000 square kilometres of intact forests were disturbed between 2000 and 2013, and over 80 per cent of original wetland habitats were converted. Dams, canals, buildings and roads have also altered habitat.

Habitat loss, from forestry, agriculture, urbanization and industrial development, is the greatest threat to species in Canada. Wildlife and habitats that were once abundant are becoming rarer, or have disappeared altogether, as a result of larger ecosystem changes.

The issues affecting urban biodiversity are similar to the threats affecting nature everywhere:

© Chris Bair / unsplash highway

Habitat Loss and Fragmentation

The growth of cities contributes to biodiversity loss by fragmenting and destroying areas of natural habitat.

© Spit Photography Shutterstock

Pollution of Soils, Air and Water

Urban areas have the potential to pollute our air, water and soil in many ways, including industrial waste, road salts, agricultural runoff, and sewage.

© Shutterstock / Herman Wong HM Agrilus planipennis - Emerald ash borer

Invasive Species

International trade, transport and gardening can relocate species to new areas, threatening native species.

© Casey Horner / unsplash flooding in city

Climate Change

Increased flood risks, rising temperatures, more heatwaves and the urban heat island effect pose a threat to wildlife and humans.

Protecting Biodiversity in Canada

WWF-Canada is working to protect and restore biodiversity in Canadian cities while raising awareness of the importance of building resilience to climate change.

Some of our biodiversity-benefiting programs and projects include:


WWF-Canada’s new how-to hub for growing native plants and trees, re:grow provides expert guidance while helping individuals contribute to a Canada-wide effort to restore wildlife habitat. Participants can create and execute an action plan that fits their personal goals and space, from making a container garden on their balcony to attract pollinators to turning part of a schoolyard into a seed garden. People can participate on their own or with community, school, campus, workplace, club, family or friend groups. Each re:grow action is tracked to measure the program’s collective impact for nature and climate.

Learn more
© Pete Ewins / WWF-Canada Shettleworth rooftop garden-Annex

In The Zone

Studies have shown that for many plants, birds and butterflies, the number of non-native species increases toward the centres of urban areas, while the number of native species decreases. Through In the Zone, a collaboration between WWF-Canada and Carolinian Canada, we are helping Canadians grow gardens that help native species thrive. By growing networks of native-plant gardens (whether they’re in front yards, backyards or on balconies), we’re restoring lost habitat and creating a healthy future for the wildlife that call it home. Together, we can grow life-sustaining habitats and resilient landscapes, one yard at a time.

Learn More
© Tim Poole women observing a franklins gull colony

Go Wild Grants

Hundreds of thousands of students and educators are making a difference for wildlife and nature. Do you have an idea to help nature thrive at your school or campus? Are you interested in leading a project that gets your school community more involved in environmental action? Every Fall, students and educators are invited to apply for a Go Wild Grant to bring their idea to life!