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Evidence of Changing Seasons in the Context of Climate Change

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Climate change reflects a “shifting rhythm of nature.” Government-sponsored high-resolution maps, scientific studies about the impacts of global warming, and witness accounts by Indigenous elders offer evidence of changing seasons due to climate change.

A key sign of how seasons are shifting is the increase in global temperatures. According to the National Oceanic and Atmospheric Administration (NOAA), Earth’s “combined land and ocean temperature has increased” at an average rate of 0.18 degrees Celsius per decade since 1981. The 2018 IPCC Special Report on Global Warming produced the target of 1.5 degrees Celsius, to limit global warming. In 2021, global warming was a key topic for discussion at the COP26 conference where global efforts to reduce greenhouse gas emissions were highlighted.

More evidence of changing seasons is noted by shifts in plant hardiness zones. A plant hardiness zone is a specified geographic area with a certain range of annual minimum temperatures which are vital for plants to survive. Maps of plant hardiness zones in Canada and the United States are showing that the zones are creeping northward over time. This shift can have an impact on the length of the growing season, rapid adjustments to agricultural practices and to farmers’ crops, and access to food year-round. In turn, urban agriculture projects and residential gardens are also affected.

Even a slight increase in temperature has an impact on the start of each season. For example, spring thaw happens earlier and pushes the onset of the first frost. Ultimately “winters are shorter, spring is earlier, summers are longer, and fall arrives earlier.” The phenomenon of “false spring” is also witnessed in North America, more frequently in recent years than in previous decades. False spring happens when temperatures rise suddenly and cause plants and trees to bud and bloom too early, making them vulnerable to the still-present risk of frost. A report by the US-based National Atmospheric and Space Administration (NASA), from almost 20 years ago, had signaled that “regional thawing trends” in North America were “advancing almost one day a year since 1988,” and “[had] the potential to alter the cycle of atmospheric carbon dioxide intake and release by vegetation and soils across the region, potentially resulting in changes in Earth’s climate” and reflects current phenomena.

Changing seasons in Northern communities reveal how earlier spring thaws trigger permafrost thaw and sea ice retreat and ultimately, coastal erosion. When permafrost thaws, the ground becomes permeable and the ensuing degradation has destructive impacts on infrastructure, such as on roads and buildings, and on sustainable development efforts too. Furthermore, while engineering solutions to these problems exist, they are also costly.

Coproducing knowledge with Indigenous communities can offer crucial insights, not always shown in high-resolution maps of coastal erosion, of permafrost degradation, and of the progression of spring thaws over time. Documenting the experiences of Indigenous elders who witness climate change will also help to paint a clearer picture of the impact of changing seasons on plants and wildlife.

 

By Leela Viswanathan

 

(Image credit – Freestocks, Unsplash)

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The Changing Regime of Wildfires

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According to the 2022 UNEP’s Frontiers Report, the regime of wildfires affecting Earth’s ecosystems is changing.  The changes are due to increases in greenhouse gas emissions (GHG) in the atmosphere, changes in land use, and other human activities.

Wildfires are uncontrolled fires that burn in vegetation. While some fires are naturally occurring, other fires are started by humans as a land management practice, to clear land for human settlements, deforestation, resource extraction, and agricultural use, all of which interfere with the natural occurrence of fires. Fire regimes involve three factors: the severity and intensity of a fire, the frequency of a fire, and the time of year or season of the fire.

Extreme weather events are also contributing to shifts in fire regimes, and global warming influences longer fire seasons. For example, monitoring conducted by Natural Resources Canada indicates that with drier conditions expected in the years ahead, there will be a “1.5-fold increase in the number of large fires by the end of the 21st century.”

While providing valuable information on the ecology of wildfires, the 2022 UNEP Frontier’s Report highlights the importance of developing a “system and whole-of-landscape approach” to fire and land management that draws from Indigenous cultural and ecological knowledge to manage wildfires. Indigenous Fire Stewardship (IFS) and Indigenous fire management practices in the fire-prone savannahs of North Australia, Brazil, and Botswana are a few approaches that have been proven to be effective in managing the changing regime of wildfires.

 

By Leela Viswanathan

 

(Photo Credit: Joanne Francis, Unsplash)

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The Vulnerability of Birds to Climate Change Effects

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A multitude of bird species are vulnerable to climate change effects. Bird migration patterns are changing because of global warming, and the extinction rates of all kinds of birds are increasing worldwide due to climate change. The term “climate refugee” most often used to describe human beings who are displaced due to climate change is also being used to describe animals and birds displaced due to declining natural habitats. Some birds are migrating earlier in the Spring, while others are no longer migrating. For example, crows are expected to increase their ranges, other birds will see their territories shrink, and it is anticipated that some Arctic birds will have “nowhere else to go” as birds from southern regions migrate north to adapt to rising temperatures.

Land conservation and remediation efforts enable birds to adapt to climate change. At Walpole Island First Nation in Southern Ontario, efforts to re-establish the population of purple martins were put into place in 2009 after Elders shared stories that the Island was once a haven for the birds, yet there had been no sightings of the birds for decades. The Island is now home to hundreds of fledglings each year and is possibly the largest roost of purple martins in North America. Parks Canada is also working to establish areas with natural features (i.e., lakes, areas out of reach of wildfires, north-facing slopes) where birds will be able to find refuge in areas being called “climate refugia.”

 

By Leela Viswanathan

 

(Photo credit: Barth Bailey, Unsplash)

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The United Nations SDG 13: Meeting the Global Challenge of Climate Action

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How close is the world to meeting the challenge of the United Nations (UN) Sustainable Development Goal (SDG) 13 on climate action? According to the UN report 2020 on SDGs “the world is way off track to meet the Paris Agreement target, signalling cataclysmic changes ahead.”

SDG 13 aims to “take urgent action to combat climate change and its impact” through the United Nations Framework Convention on Climate Change (UNFCC), while focusing on each member nation’s efforts to integrate the SDG 13 targets into their policies on climate change. The Paris Agreement builds upon the UNFCC, seeking “to limit global warming to 1.5C,” such that greenhouse gas (GHG) emissions start to fall by 7.6% each year starting in 2020. SDG 13 is also considered alongside efforts to build more climate-resilient economies and societies as noted in the Sendai Framework for Disaster Risk Reduction 2015–2030.

GHG emissions declined worldwide at the onset of COVID-19; however, these emissions are expected to rise, as governments lift pandemic-related restrictions on people. In July 2020, the International Energy Agency (IEA) reported that the world had no more than 6 months left to avert a climate crisis and to prevent a surge of GHG emissions. Without full commitment from governments worldwide, there is little hope to reverse the climate crisis. It will also be worth considering how SDG 13 and other SDGs are implicated in sustainable development efforts among Indigenous communities in Canada.

By Leela Viswanathan

 

(Photo Credit: Denys Nevozhai)

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Gardens and Climate Change – How Growing a Resilient Garden Helps Fight Global Warming

It’s the time of year when people across Turtle Island are turning to their gardens for food and for enjoyment. Fresh food from the garden supports health and wellness which improves our resilience as human beings. Growing a resilient garden also supports Mother Earth as the climate changes.

A garden (or a person) is resilient when it’s able to bounce back after facing extreme conditions. By learning different resilient gardening techniques, we can help our gardens withstand extreme weather caused by climate change. Practices that make gardens more resilient include, minimizing digging and ploughing (often called tilling), avoiding artificial fertilizers and chemical pesticides, and including native plants. Planting perennials, the kinds of plants that aren’t weeds, but that, like weeds, come back every year without much maintenance, also contribute to making gardens more resilient to climate change in every season.

Indigenous gardens can play a key role in promoting intergenerational cooperation and sharing Traditional Knowledge about food and the environment. For example the Winyan Toka Win Garden a program of the Cheyenne River Youth Project has met the needs of elders who want traditional foods, and Lakota youth who can learn to better reconnect with the land and with each other. These gardens help build resilient communities and serve as community spaces for hands-on learning. Gardens become outdoor classrooms and contribute to Indigenous land-based learning and Indigenous food sovereignty to fight climate change.

With global warming, the growing season across Turtle Island has become longer. Learning to grow a garden that can adapt to a wide variety of growing conditions is an important factor in adapting to global warming and climate change. So, maybe the next time you admire your Three Sisters Garden grow, or the purple-stemmed asters or another native wildflowers where you live, remember that these plants help build the resilience of all of us, and Mother Earth, to climate change.

 

By Leela Viswanathan

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The Urgency of the Climate Crisis

Globally, we have been discussing the effects of a changing climate for quite some time.  However, it has been only recently that these discussions have widely acknowledged the urgency of this change- an urgency that acutely reflects the experiences of many First Nations communities.  This acknowledgement is represented by the very words we use to talk about our planet’s climatic situation.

Following the Paris Agreement discussions of 2015, many have adopted the term “climate crisis”, when referring to the extreme shifts in our global climate.  Terms previously used for these shifts included “climate change” and “global warming”.  This progression in terminology reflects our evolving understanding of the environmental situation our planet has ben put in.  Interestingly, it also shows a transformation in our understanding of how people respond to the situation, depending on the labels we use to talk about it.

Through to the mid-2000s, “global warming” was the term widely used when referring to our changing climate.  Slowly though, many began to realize that the term “global warming” not only falsely represented the true complexity of the issue we were creating, but that a slightly warmer planet even sounded appealing to some.  And so came our use of the term “climate change”.

While “climate change” succeeded in acknowledging the complexity of this phenomenon, and is still the most accepted term used today, it has proven unable to captivate the majority of people into taking meaningful climate action.  It dampens the message of urgency that the world needs to hear, leading to the acceptance of these changes as a fact, rather than a fault.  Instead, we need words that instil meaningful action.  We need words that convey urgency.

For the first time, we have a label that now directly reflects the realities faced by many communities around the world, as the planet struggles to keep up with the lifestyles of many humans.  The “climate crisis”.  First Nations communities in Canada are among the many able to articulate this crisis experience.

In the past few years alone, the increase in extreme weather events, including forest fires, flooding, and higher annual temperatures have been notable.  Habitats and wildlife are being lost.  Lifestyles are being threatened.  First Nations communities are often the first to feel these changes, through effects including the loss of traditional means of gathering food, reduced access to winter roads, and the destruction of traditional revenue sources.

This coming week, leaders from various First Nations communities will be gathering in Ottawa for the 2019 Indigenous Climate Adaptation Gathering.  They will be discussing their current and future experiences with the climate crisis, some of which will be shared across communities, others of which will be unique.

Just as the statistical reports of scientists have shown us around the world, the lived experiences of First Nations communities prove that we can no longer passively hope that our planet will be okay.  Instead, we must act on creating meaningful change, and we must encourage the development of realistic adaptation plans for the communities most vulnerable to these changes.

 

(Author Credit: Charlotte Corelli)

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