Tuesday, January 12, 2021

A crack in the green: when ecosystem services become drivers of inequality in cities

Guest post by Marylouisse Feliciano, recent MEnvSc Graduate from the University of Toronto-Scarborough

Can health-related ecosystem services actually increase health inequality? What does the uneven distribution and varying quality of urban green spaces say about social justice in urban environments? Not all park spaces and green spaces are created equal. As urbanization marches forward, steps have to be taken to address inequalities and prevent this pattern from continuing.

 Health, urbanization, and parks: what we know

            Nature is good for your physical and psychological health and wellbeing. The benefits of spending time in nature is a subject that continues to gain traction, both in research and among the public sphere. However, as more and more of the population moves towards urban living, spending time in nature has increasingly become something of a luxury. Although access to healthcare and health resources has increased, urban living itself can lead to more sedentary behaviours and increased exposure to pollution. In addition, there are mental and emotional aspects of city life that impact public health. Of particular note are the trends in psychological well-being associated with cities.

            Consider the CAMH Monitor survey in Toronto, which finds that reports of fair or poor mental health increased from 7.1% to 10.1% between 2016 and 2017. Furthermore, reports of suicidal thoughts have almost doubled in the same timeframe, and visits to the CAMH Emergency Department have increased by 70% between 2012 and 2017. Are there within city trends that we should be paying attention to? One of the most studied risk factors affecting urban mental health is socio-economic status (SES). Its association with mental health has been consistent—a 2017 literature review observed that mood disorders were more frequent among residents of large cities in Germany (Gruebner et al., 2017). There are several reasons for this, from the heightened difficulty in building and sustaining supportive social relationships in disadvantaged areas to the possibility that people with poor health or life difficulties move to more “deprived” areas due to lower rent costs.

A greenspace planning workshop in Victoria, BC. Retrieved from: https://www.oala.ca/ground_articles/the-powers-in-the-process/

What role do urban parks and associated greenspace play? The list is long. At its most basic, urban parks provide space for citizens to participate in physical activities, such as running and exercising. These spaces provide more opportunities for people to engage in an active, healthy lifestyle. While physical activity in urban green spaces is no doubt essential, its increasing noted that the psychological benefits of urban park space should are of equal importance. In addition to being a place where physical activities can occur, parks can act as a space for relaxation and reprieve from noise. As urban lifestyles becomes more stressful, having a place to distance oneself from that aspect of modern life can help in preventing emotional distress and crisis. These spaces can also foster community and relationship building. The positive mental health values of park space can be broadly described as “psychological ecosystem services”.

What we know but don’t admit: park space quality is not equal

            Socio-economic status doesn’t just directly affect health. It plays a role in the quality of park-space, especially in the context of a city. For park space to provide the psychological ecosystem services they are touted to have, they must be maintained and cared for (Branas et al., 2011; Hunter et al., 2019). Park spaces that are available to low-income communities are often poorly maintained, vandalized, or even unsafe. Some parks even become hotspots for drug use, sometimes acting as a gateway to substance abuse and associated health risks. In light of this, access to the positive psychological ecosystem services that urban green spaces provide are inequitably distributed through many cities around the world.    

A used needle found in a park in Lawrence, Massachusetts. Retrieved from: https://www.citylab.com/equity/2019/02/opioid-epidemic-data-drug-addiction-deaths-urban-rural/582502/

            The issue is more complex than mere park space availability. Whether or not disadvantaged groups have more or less access to park space is less clear—these neighbourhoods tend to be in less developed spaces, meaning that they might have more access to forested park space than people living in typically higher income city centres. However, the quality of park space has a more predictable trend—it’s typically of poor quality in disadvantaged communities, and access tends to be negatively associated with average income. For example, a study in Portugal found that, although the majority of neighbourhoods had accessible greenspace, distance to them increased with neighbourhood deprivation (Hoffimann et al., 2017).

          Yet, the group of people who could most benefit from the health aspects of park space are the disadvantaged, and good access to park space and associated green space can reduce observed socio-economic and mental health inequalities between advantaged and disadvantaged groups. Having good park space puts people living in cities on a more even playing field health-wise (Mitchell et al., 2015). However, although this pattern is known, issues with the quality of park space make it hard to believe that planners are taking the potential health benefits of park space seriously. 

            Although findings are mixed regarding geographic access to greenspace and socio-economic status, the aspect of park quality is less ambiguous. City planners need to consider both proximity and quality if they wish to address inequality in access to park space, and the associated health-related ecosystem services they should to provide to everyone.

A conceptual rendering of Rail Deck Park in Downtown Toronto. Retrieved from: https://www.toronto.ca/city-government/planning-development/planning-studies-initiatives/rail-deck-park/

When ecosystem services are not for everyone: the cracks we fall through

            Urban park spaces provide health-related ecosystem services, and their quality tends to not be distributed equally across cities. Put the two together and it becomes clear that socio-economic factors are leading to park spaces not benefitting all urban citizens equally. Of course, there is the issue of “which came first”: are disadvantaged neighbourhoods provided with poor quality park space, or does the installation of quality green space lead to housing prices increasing, making them only affordable to the advantaged population? Fundamentally, what led to what is less important than taking action to prevent and remove this trend.

Urban planning and design can and must do better if it wishes to utilize park space in a way that doesn’t amplify health inequalities that already exist. Ecosystem services that are not spread equitably across a populace do a disservice to the communities that need them the most.


CAMH Monitor Survey

National Recreation and Park Association – Parks & Recreation Magazine


Branas, C. C., Cheney, R. A., MacDonald, J. M., Tam, V. W., Jackson, T. D., & Ten Have, T. R. (2011). A Difference-in-Differences Analysis of Health, Safety, and Greening Vacant Urban Space. American Journal of Epidemiology, 174(11), 1296–1306. https://doi.org/10.1093/aje/kwr273

Gruebner, O., A. Rapp, M., Adli, M., Kluge, U., Galea, S., & Heinz, A. (2017). Cities and Mental Health. Deutsches Ă„rzteblatt International, 114(8), 121–127. https://doi.org/10.3238/arztebl.2017.0121

Hoffimann, E., Barros, H., & Ribeiro, A. I. (2017). Socioeconomic Inequalities in Green Space Quality and Accessibility—Evidence from a Southern European City. International Journal of Environmental Research and Public Health, 14(8). https://doi.org/10.3390/ijerph14080916

Hunter, R. F., Cleary, A., & Braubach, M. (2019). Environmental, Health and Equity Effects of Urban Green Space Interventions. In M. R. Marselle, J. Stadler, H. Korn, K. N. Irvine, & A. Bonn (Eds.), Biodiversity and Health in the Face of Climate Change (pp. 381–409). Springer International Publishing. https://doi.org/10.1007/978-3-030-02318-8_17

Mitchell, R. J., Richardson, E. A., Shortt, N. K., & Pearce, J. R. (2015). Neighborhood Environments and Socioeconomic Inequalities in Mental Well-Being. American Journal of Preventive Medicine, 49(1), 80–84. https://doi.org/10.1016/j.amepre.2015.01.017

Monday, December 21, 2020

Bright Goes North

Guest post by Kate Davies, a recent MEnvSc Graduate from the University of Toronto-Scarborough

She could feel the pull in her body. It was time.

She had done this journey before, but even the first time it felt familiar. Like a memory that she was born with.

She was called Bright because she was known by the others for her deeply golden tail feathers and her clear eyes. Bright was late leaving her winter home this year, and many of the others had left already, departing at the first signs of change. The air had started to feel heavy signaling that the rains would come soon. She had to start north before daybreak. Bright hopped around the tree canopy from branch to branch. She dropped her wings by her sides and fanned her tail to spook the insects and quickly grab them in her beak. She had spent her winter in brushy scrubland that was not the best feeding grounds, but she was older now and had less energy to defend her place in the boggy wetlands filled with ripe insects. She ate her fill before she spread her wings and started to carry her small light body out over the immense open waters. Crossing the gulf was frightening the first time, but she knew even on her first trip that the sky would end, and she would see green again. She traveled in a loose flock with some other Redstart females, some yearlings and others Bright knew from previous flights. She hoped some of her daughters were here, now grown she would not have known their calls. The males always left first; they would meet them in the northern home.

Illustration by Kate Davies

The journey across the gulf lasted into the night, the winds were not favourable this year. Bright and the others she travelled with were weak and needed to eat. There was a wetland they had visited as a stop every year, but Bright was worried they had taken a wrong turn. This was the right place but there was not water, few plants, and it had been filled with stone, humans and a glowing hum. It seemed as she flew north every year there were more angular stone forests filled with humans. Some could tolerate these stone forests but Bright and her companions preferred trees and grass. The birds who lived there like pigeons and house sparrows spoke a different language than the other birds she knew, and some said they came across the water bigger than the gulf. So, despite their exhaustion the females kept flying until they could find somewhere to eat and sleep. They had to settle for an area where the plants all grew in rows, a farm, but there was a river and some insects so it would do for today. These human places had different dangers and predators than in the forests and fields. Bright knew to be cautious of owls, hawks and snakes but where there were humans, other dangers were lurking. They were too tired to find anywhere else to sleep. Bright noticed that her party had shrunk by a few - some were so tired they may have rested in the stone forest. Bright hoped the others would be alright and would catch up to the group.

They travelled for a few more days, finding quiet places to rest. They avoided the stone forests as much as they could with their bright lights, constant noises and hums. They rested at another farm on the fifth night. Bright and her companions were huddled in a dense thicket of bushes near a field and river. They had fallen sound asleep for the night. In the nearby tall grasses, a pair of green eyes shone in the moonlight. A barn cat had been stalking the birds, she moved quietly, softer than the wind. The cat slinked under the low branches of the bush without a sound and spotted a bird on a low branch she could easily reach.  Bright opened her eyes to see one of the yearlings was in the cat’s fangs - she was lost. Bright and her companions moved to another row of bushes closer to the stream, they were all shaken and tired. Fear and anxiety overtook the small flock, they didn’t sleep anymore that night. Bright was relieved when the sun crept over the horizon and they could continue northward.

Illustration by Kate Davies

The air was warm, and they had been lucky that there were no storms along the way. They started to see some males that day, and a few of her companions ended their journey to find a mate. Bright continued her northward flight as did most of the females until they made it over the big lake. It was not as big as the gulf, but it could be dangerous, as there were many humans and stone forests around the water. There were predators near every shore, some had been here all winter and were eager for the small songbirds to return so they could fill their bellies.

Since Bright had left late this year, she was eager to build a nest and find a mate. She decided to end her journey on an island at the north shore of one of the long lakes. Most of the others continued north. She was near a stone forest but on an island that was far enough away that the sound of the waves drowned out the hum and noise. It was the time of year where the air was filled with song from many different birds. She fluttered around the island listening for males of her kind, trying to find one who sang strong and clear. She followed a song to a male high up in a red maple tree. In her mind she identified him as Flicker - he was very expressive in the way he flicked his tail. He took her to the sites he had scouted for nesting to see if she approved of any. She was happy that she would be his first and maybe only mate, which would afford her more protection. She picked the third site he showed her. It was a dense area of red dogwood that was covered in fresh young leaves. They were close to a pond in an area rich with insects. She started to gather twigs and build her nest there while Flicker stayed close singing to warn others away from his mate and territory. Together they had four eggs and Bright was happy with her clutch size; it was more than last spring. She left the nest to find some food in early morning and Flicker guarded the eggs. She was chasing a particularly acrobatic fly though the bushes when suddenly a great force stopped her flight and she fell to the ground. She could feel and taste the warmth of blood in her mouth, her beak was fractured, her head pounded, and she could not catch her breath. She had only seen branches before her, it was like a reflective pond in the air made of stone. Bright wanted to live, she wanted to get up go back to Flicker and the young. She could not move; she let out her last breath and died.

The new gardener came around back of the building to trim the forsythia that was long overgrown. At the base of the bush under the window lay a female American Restart, she was dead. The garden gasped and cried out ‘Oh no!’ Another window strike, this was the sixth one this month and perhaps it would encourage management to finally birdproof the windows, thought the gardener. She buried the bird in the garden with a tear for its loss of life and trimmed the forsythia. On her break she reported the window strike on the Fatal Light Awareness Project (Flap) website and continued her duties.

Flicker realized that Bright would not return - what had become of her? He could not care for the babies alone. He would have to leave them. He sung a mournful song for Bright and flew off in search of a new mate hoping that it wasn’t too late.



Further Reading and References

Further reading: Online resources

The Cornell Lab - All about birds – American Redstart

Overview: https://www.allaboutbirds.org/guide/American_Redstart/overview and

Species account: https://birdsna.org/Species-Account/bna/species/amered/introduction

Toronto and Region Conservation Authority. The American Redstart: A Bird On the Rise In the GTA https://trca.ca/news/the-american-redstart-a-bird-on-the-rise-in-the-gta/

Boreal Songbird initiative. A guide to boreal birds https://www.borealbirds.org/bird/american-redstart

Ontario Nature. Migratory Birds https://ontarionature.org/campaigns/migratory-birds/

North American Birds Declining as Threats Mount By Mel White for National Geographic https://www.nationalgeographic.com/news/2013/6/130621-threats-against-birds-cats-wind-turbines-climate-change-habitat-loss-science-united-states/

Birdwatchers Digest. Your Bird Questions Answered: Flight and Migration https://www.birdwatchersdigest.com/bwdsite/connect/youngbirders/your-bird-questions-answered-flight-migration.php


 Further reading: peer reviewed literature

Cohen, E. B., Rushing, C. R., Moore, F. R., & Hallworth, M. T. (2019). The strength of migratory connectivity for birds en route to breeding through the Gulf of Mexico. Ecography, 42(4), 658–669. https://doi.org/10.1111/ecog.03974

Cooper, N. W., Sherry, T. W., & Marra, P. P. (2015). Experimental reduction of winter food decreases body condition and delays migration in a long-distance migratory bird. Ecology, 96(7), 1933.

Hill, G. E. (2004). A Head Start for Some Redstarts. Science, 306(5705), 2201–2202.

Germain, R. R., Marra, P. P., Kyser, T. K., & Ratcliffe, L. M. (2010). Adult-Like Plumage Coloration Predicts Winter Territory Quality and Timing of Arrival on the Breeding Grounds of Yearling Male American Redstarts. The Condor, 112(4), 676–682. https://doi.org/10.1525/cond.2010.090193

Norris, D. R., Marra, P. P., Bowen, G. J., & Ratcliffe, L. M. (2006). Migratory connectivity of a widely distributed songbird, the American Redstart (Setophaga ruticilla). The Auk, 123(4), 14.

Norris, D. R., & Marra, P. P. (2007). Seasonal Interactions, Habitat Quality, and Population Dynamics in Migratory Birds. The Condor, 109(3), 535–547.

Marra, P. P., & Holmes, R. T. (2001). Consequences of Dominance-Mediated habitat segregation in American Redstarts during the nonbreeding season. The Auk, 118(1), 92–104.

McKinnon, E. A., Stanley, C. Q., & Stutchbury, B. J. M. (2015). Carry-Over Effects of Nonbreeding Habitat on Start-to-Finish Spring Migration Performance of a Songbird. PloS One, 10(11), e0141580.

Morris, S. R., & Glasgow, J. L. (2001). Comparison of spring and fall migration of American Redstarts on Appledore Island, Maine. The Wilson Bulletin, 113(2), 202.

Smith, R. J., Mabey, S. E., & Moore, F. R. (2009). Spring Passage and Arrival Patterns of American Redstarts in Michigan’s Eastern Upper Peninsula. The Wilson Journal of Ornithology, 121(2), 290–297. https://doi.org/10.1676/08-051.1

Wuethrich, B. (1998). Songbirds Stressed in Winter Grounds. Science, 282(5395), 1791–1794.



Wednesday, December 9, 2020

Targeting Biodiversity Conservation: A Post-2020 World

Guest post by Connor Kendall, recent MEnvSc graduate from the University of Toronto-Scarborough

The world is currently in the midst of the sixth mass extinction where global vertebrate populations have declined by 60% over the past 40 years and human pressures are impacting a vast 75% of the Earth’s surface1. If we continue along the path of business-as-usual, we will have a lot more to be concerned about than just living underwater in the next 30 years. If we lose most of the world’s pollinators, 40% of which are facing extinction1, you can say goodbye to your avocado toast and pumpkin spice lattes. If bats continue along their current trajectory and become extinct, you can say hello to endless summer nights with countless mosquito bites. This is why we need global action towards conserving, restoring and sustaining biodiversity, which is exactly what the Aichi Biodiversity Targets hoped to accomplish back in 2010.

Source: UNDP (2013). Charting pathways for biodiversity and sustainable development (retrieved from: https://www.slideshare.net/equatorinitiative/charting-pathways-for-biodiversity-and-sustainable-development)

At the 10th meeting of the Conference of the Parties in 2010, the Strategic Plan for Biodiversity 2011-2020 was implemented and the 20 internationally agreed upon Aichi Biodiversity Targets were formulated. The goal of this plan was to “take effective and urgent action to halt the loss of biodiversity” by 2020. The years have since gone by and it is now 2020, so what does that mean for the targets and biodiversity conservation? We are still experiencing unprecedented species declines – and despite global commitments towards achieving these targets, as a whole – we fell short and a lot still remains to be done. There is no point dwelling on the past but rather, it is important to learn from our failures and look to the future in order to adapt and create revised targets. We need to refocus our efforts, now more than ever, so that we can transform our relationship with nature and save the things we hold dear (even if that is just avocado toast).

Before we can look to the future, we must first look to the past. Where did we fall short? What can we learn from our failures? Did we miss something? These are the questions that need to be answered if we want to succeed in the future. In writing this blog about the past and future of International Biodiversity Targets, I hope to draw attention to the issue of biodiversity loss and highlight the importance of not only creating these targets but also achieving them, in the years to come.

Where did we go wrong?

It’s been 10 years since the 20 Aichi Biodiversity Targets were agreed upon and we have fallen short of almost all of them. The targets have been criticized for being too ambiguous leaving room for interpretation, not being quantifiable enough making it difficult to track progress, and not being binding which allowed countries to create individualized targets that don’t meet the global targets. Together, these may be a couple of the reasons why we have failed to meet the majority of the goals globally.

Let’s take a look at Aichi Target 11 which is one of, if not the most, talked about target. Target 11 falls under the Strategic Goal C and states:


“By 2020, at least 17 per cent of terrestrial and inland water, and 10 per cent of coastal and marine areas, especially areas of particular importance for biodiversity and ecosystems services are conserved through effectively and equitably managed, ecological representative and well-connected systems of protected areas and other effective area-based conservation measures, and integrated into the wide landscapes and seascapes.”


As far as the target itself goes, it is one of the most quantifiable and easily tracked targets, providing exact percentages of area that must be conserved. It is specific and uses unambiguous language, providing clear guidance on how to achieve the target. Areas must be ecologically “representative”, “well-connected” and “effectively and equitably managed”. Seems fairly straight-forward, right? Wrong. Because the Aichi Biodiversity Targets are not binding and act more as a guide than a hard-and-fast rule, different government agencies can take these “guidelines” and adjust them into what works for them. For example, in 2015 (five years after the original targets were imposed) Canada came up with their own 2020 Biodiversity Goals and Targets, giving them just a couple of years to make any real progress. The issue with these targets is that they removed a lot of the meat from the Aichi Targets, solidifying the dreary fate of biodiversity. For comparisons sake, let’s take a look at Canada’s Target 1, to see just how Aichi Target 11 was altered:


“By 2020, at least 17 percent of terrestrial areas and inland water, and 10 percent of coastal and marine areas, are conserved through networks of protected areas and other effective area-based conservation measures.”


What was once 62 words has been condensed down to 32. The main idea of the target and the percentages are still there however, it leaves out the idea of conserving ecologically representative areas that are effectively and equitably managed. By removing these ideas, Canada made a more ambiguous target and set themselves up to achieve the target in all the wrong ways. And Canada is not alone.

The Protected Planet issued a report in 2018 and have since updated it with information from February 2020. According to this report, 15.1% of the global terrestrial area and 7.9% of the global marine area have been conserved. 

Source: UNEP-WCMC and IUCN (2020). Protected Planet: The World Database on Protected Areas (WDPA), February 2020 version (retrieved from: https://livereport.protectedplanet.net)

Looking at these numbers, it seems like we are heading in the right direction but, when you dive further you notice that is not the whole picture. Remember in the Aichi Target 11 when it specified the areas needed to be “representative”, “well-connected” and “effectively managed”? The Protected Planet Digital Report looked at the percentage of areas that are conserved that meet each of these criteria and this is what it found: 5% of terrestrial areas and 1% of marine areas are effectively managed, 9% of terrestrial areas are ecologically representative, and 7% of terrestrial areas are well-connected.

Source: UNEP-WCMC and IUCN (2020). Protected Planet: Aichi Target 11 Dashboard (retrieved from: https://www.protectedplanet.net/target-11-dashboard)

Because the countries had the ability to adapt the Aichi Targets to suit their needs, it left too much room for ambiguity and inadequacy, ensuring that by 2020, there was nothing the world could do but fall short. It is important when we look to the future of biodiversity conservation that we consider the mistakes from the last 10 years and learn from them to ensure biodiversity is around for the generations to come.

What does the future look like?

The future remains uncertain but what is certain, is the need to act now. Many believe that new targets must be SMART (specific, measurable, attainable, relevant, time-based), should integrate scientific research where applicable, and involve progressive steps and actions similar to a roadmap for achieving the targets.

Negotiations have already been underway and governments have given themselves two years to develop a post-2020 framework that is to be presented at the 15th Conference of the Parties, at the UN Biodiversity Conference in 2020 in Kunming, China. An open-ended intersessional working group, under the leadership of Mr. Francis Ogwal of Uganda and Mr. Basile van Havre of Canada, has already published the Zero Draft of the Post-2020 Global Biodiversity Framework as of January 13th, 2020. The framework hopes to provide both the context and structure required to allow diverse stakeholders to communicate and work together towards the common goals.

The zero draft looks to the next decade and identifies a 2030 Mission:


“To take urgent action across society to put biodiversity on a path to recovery for the benefit of planet and people.”


The post-2020 framework also proposes 20 new biodiversity conservation targets. What is interesting about the proposed targets is that there are similarities to the original Aichi Targets and it is evident that the working group considered the mistakes that were made and learned from them when drafting the new ones. For example, the second proposed target mirrors Aichi Target 11 and ups it by creating the more ambitious proposed Target 2:


“Protect sites of particular importance for biodiversity through protected areas and other effective area-based conservation measures, by 2030 covering at least [60%] of such sites and at least [30%] of land and sea areas with at least [10%] under strict protection.”


The target not only identifies higher percentages of area protected, but also offers up the condition of “strict protection” which was not included in the original Aichi Target 11.

It is also evident in the new proposed targets that the working group listened to the public over the past decade and tried to incorporate issues that people care about like plastic waste in proposed Target 4, climate change mitigation and adaptation in proposed Target 6, and the sustainable use of wild species in proposed Target 7. In order to stand a chance of reaching the goals by 2030, it is clear that the public needs to be engaged with these targets, and what better way to do it than include things that people are already passionate about.

The Zero Draft of the Post-2020 Global Biodiversity Framework is promising and it has huge potential to have a ripple effect in many countries, but there are some things that need to be reviewed and reconsidered before that can happen. Some of the targets remain to be unquantifiable, such as the proposed Targets 16 and 17. At the very least, the working group should consider including some guidelines as to how to achieve and track these targets, to ensure they do not get lost and forgotten alongside some of the “bigger ticket” targets.

Any new framework that is implemented will have its highs and lows, but to ensure the 2030 Mission and Targets are achieved in the best way possible, it is important that the new framework works on strengthening the existing Aichi Targets, progress and initiatives that are underway and learn from them, as well as have stricter guidelines in place to avoid the ambiguity and inadequacy that came about from the Aichi Targets.  

All hope is not lost, but much still remains to be done. Now, more than ever, we need a drastic shift in the way biodiversity is viewed and valued in order to stand a chance of putting an end to the sixth mass extinction and the post-2020 framework is a step in the right direction.


1.     WWF (2018). Living Planet Index. Retrieved from: https://www.worldwildlife.org/pages/living-planet-report-2018 

Saturday, December 5, 2020

Southern Ontario’s Ecoregions in Slow Motion: An Eight-Year Journey Along the Bruce Trail

Guest post by Daniel Stuart, MEnvSc Candidate in the Department of Physical & Environmental Science at the University of Toronto-Scarborough

During the final year of my undergraduate program the idea of hiking all 900-or-so kilometres of the Bruce Trail somehow lodged itself in my head. It was 2010 and I was twenty-one years old, immersed in the idealism of that age and on the doorstep of a career as an ecologist. At the time hiking from Queenston Heights along the Niagara River to the town of Tobermory at the northern tip of the Bruce Peninsula (Figure 1.) seemed an appropriate way to gain a more meaningful appreciation of my home province’s landscape. This would turn out to be true in part, but little did I know that the more valuable takeaway would be a practical education in the transitional ecosystems that define Southern Ontario’s landscape. For those without the time to hike it themselves, take a tour with me along the trail from south to north exploring its subtle but undeniable ecological shifts.

Figure 1: Bruce Trail Map (Bruce Trail Conservancy, 2020

As life sometimes goes, it was another two years before I finally purchased the Bruce Trail Reference guidebook and embarked on my first sojourn, a three day hike that would take me from the southern terminus of the trail at Queenston Heights back to Hamilton where I lived at the time. I hopped on a free shuttle bus heading for a casino in Niagara Falls and upon arriving was accosted by the bus driver when he spotted my backpack and water jug, realizing I had no intention of gambling that day.  It was September 2, 2012 and the first miles of the trail were peppered with sightings of uncommon shrubs and trees like Bladdernut (Staphylea trifolia), Sassafras (Sassafras albidum), Spicebush (Lindera benzoin), Pignut Hickory (Carya glabra), and Hill’s Oak (Quercus ellipsoidalis), many of which display full fruit in the late summer. These shrubs and trees share a common trait: in Canada they are confined to the Carolinan Ecoregion.

The Carolinan Ecoregion (defined as Ecoregion 7E in Ontario; Figure 2.) occupies the southernmost portions of Ontario, extending from the shores of Lake Erie to approximately Grand Bend in the west, London, Hamilton, and Toronto in the east. Named for the forests typical of the Atlantic Coast from Long Island to Georgia, this region is dominated by a large variety of deciduous (or, leafy) trees including those listed above that fail to thrive in cooler climates to the north or west (Colthurst & Waldron, 1993). In the Niagara Region the sheltering cliffs and slopes of the Niagara Escarpment offer a slightly warmer microclimate that encourages the region to “punch above its weight” in terms of plant diversity.

Figure 2: Ecoregions of Ontario (Crins et al., 2009)

My first journey from the Niagara River ended in utter failure when with painfully blistered soles, just 26 kilometres into my expedition I swallowed my pride and called a friend to pick me up at the Brock University campus in St. Catharines. I would eventually work up to 30- and even 40-kilometre days, but this would take years of training and a good deal of re-conditioning every spring to tighten up my legs that would seemingly turn to jelly each winter.

The “southern feel” of the Bruce Trail gradually diminishes as one hikes westward toward Hamilton, the conspicuously common open-grown oaks (Quercus spp.) gently replaced by the familiar Sugar Maple (Acer saccharum)-dominant woodlands that emblemize Canada. The extensive forested tracts of the Dundas Valley offer the final display of southern species before mounting the escarpment where suddenly one stands firmly in the Great Lakes-St. Lawrence Ecoregion (defined as Ecoregion 6E in Ontario; Figure 2.).  The abruptness of the transition surprised me. I recall spotting the northernmost stand of a southern tree, a population of Chinquapin Oak (Quercus muehlenbergii) perched below the escarpment brow next to Sydenham Road in Dundas. Although I understand that southern species are occasionally found north of the official boundaries of the Carolinian Ecoregion, along the Bruce Trail I encountered no other Carolinian-specialist plant. The sheltered valleys of the Hamilton area seem to provide a last bastion for southern plants that struggle to tolerate the exposed landscape above Burlington and beyond.

From the Burlington heights the Great Lakes-St. Lawrence forest extends northward all the way to the edge of the Canadian Shield, which itself transitions into the seemingly endless Boreal forest that blankets the northern part of our continent. Unlike the Carolinian region which comprises mostly deciduous trees, or the Boreal region which compromises mostly coniferous trees, the Great Lakes-St. Lawrence forest is a roughly equal mix of the two. This forest type features strong representation from leafy trees like Sugar Maple (Acer saccharum), American Beech (Fagus americana), and Black Cherry (Prunus serotina) along with their needled counterparts like Eastern White Pine (Pinus strobus), Eastern White Cedar (Thuja occidentalis), and Eastern Hemlock (Tsuga canadensis).

I hiked the central stretches of the Bruce Trail at a slower rate between 2014 and 2018, a section that traverses a hilly complex of woodlots, river valleys, and bucolic landscapes. I came across a Striped Maple (Acer pensylvanica) in the Caledon area and a small Jack Pine (Pinus banksiana) stand on a north-facing slope near the Hockley Valley, both typically northern trees. My first Northern Holly Fern (Polystichum lonchitis) was observed in Noisy River Provincial Park near the village of Creemore, a plant that in places coated the trailside by the time I reached Owen Sound. Similarly, I spotted a tiny American Hart’s Tongue Fern (Asplenium scolopendrium var. americanum) in the Beaver Valley, a globally uncommon species whose core range is concentrated around Owen Sound and the lower reaches of the Bruce Peninsula.

By May of 2019 I was hiking in earnest, setting aside many weekends to cover the approximately 210 kilometres from the west edge of the Beaver Valley near Kimberley, through Owen Sound and to the base of the Bruce Peninsula near Wiarton. The birding that spring was glorious, and I often hiked with binoculars somewhat annoyingly tugging against my neck. In the Beaver Valley I observed my first ever Louisiana Waterthrush (Parkesia motacilla) along the rushing banks of Bill’s Creek. A Philadelphia Vireo (Vireo philadelphicus) flitted between branches in a woodlot near Walter’s Falls, a Golden-winged Warbler (Vermivora chrysoptera) was spotted within a thicket at the Bighead River Overnight Rest Area, and a Green Heron (Butorides virescens) squawked at me near the Bognor Marsh.

In early September 2019 I began the big push up the Bruce Peninsula toward Tobermory, in a four-day period that would take me from the town of Wiarton to Crane Lake Road just before the southeast boundary of Bruce Peninsula National Park. Logistics were more complicated now and I was forced to consider packing lightweight provisions that were adequate but could still be carried on my back. There were also safety considerations specific to the Bruce Peninsula, like establishing a check-in system where cell reception was poor, and to keep aware of Black Bear (Ursus americanus) and the docile but not entirely unthreatening Massasauga (Sistrurus catenatus), Ontario’s only venomous snake. Bear scat was an intermittent sight along the length of the peninsula, first observed just 14 kilometres past Wiarton along Malcolm Bluff.

Although forests remained of mixed composition typical of the Great Lakes-St. Lawrence region, cool northern exposures and thin-soiled areas took on a palpable “northern feel”, often dense with Eastern White Cedar (Thuja occidentalis), pine (Pinus spp.) and Eastern Hemlock (Tsuga canadensis). Wind-beaten crags offered habitat for abundant Bearberry (Arctostaphylos uva-ursi), a northern species yet unseen on my journey so far, and Rattlesnake Plantains (Goodyera spp.) became commonplace. By the time I reached the edge of the National Park the Boreal woods felt much closer.

Sadly, poor weather and low spirits cut my hike short in September, with soggy feet and an approaching storm promising to result in a miserable finale. Despite this setback my goal to finish the Bruce Trail remains firm. At this moment I have booked a campsite in the National Park this May 2020 and (barring any disasters) myself, along with three companions, will finish the final 40 kilometres toward the trail’s northern terminus.

To walk the Bruce Trail is to walk a cross-section of Southern Ontario. For me it has offered an education in landscape ecology earned by traversing it first-hand. It has been a limit-testing and a character-building experience. Although I now hike with a different outlook than my 21-year-old self, I must credit him with having the guts to recognize the journey’s value and for accepting its challenge.


Bruce Trail Conservancy. 2020. Explore the Trail. Bruce Trail Conservancy. <https://brucetrail.org//trail-sections>. Retrieved 13 February 2020.

Colthurst, K., Waldron, G. 2013. “What is a Carolinian Forest?”. Essex Region Conservation Authority. Carolinian Canada. <https://caroliniancanada.ca/legacy/SpeciesHabitats_Forests.htm>. Retrieved 13 February 2020.

Crins, William J., Paul A. Gray, Peter W.C. Uhlig, and Monique C. Wester. 2009. The Ecosystems of Ontario, Part I: Ecozones and Ecoregions. Ontario Ministry of Natural Resources, Peterborough Ontario, Inventory, Monitoring and Assessment, SIB TER IMA TR- 01, 71pp.