Much attention has focused on what a strong El Niño could mean for food security, disasters, and the economy. Biodiversity loss deserves the same urgency because healthy ecosystems support our global food systems, buffer communities from extreme weather, and sustain livelihoods for billions of people worldwide. Biodiversity is already declining because of land-use change, resource exploitation, pollution, invasive species, and climate change. A strong El Niño could accelerate this decline by driving habitat loss and degradation, altering wildlife movement and behavior, and disrupting conservation efforts.

When Habitats Are Lost and Degraded

Habitat loss occurs when species lose the places they need to feed, breed, shelter, and find water, causing populations to shrink and making local extinctions more likely. Human land-use change remains the main driver of this process, especially through deforestation and agricultural conversion, but a strong El Niño can accelerate habitat loss by increasing the risk of extreme conditions like drought, storms, and flooding. 

In Indonesia, the 2015–2016 El Niño created unusually dry conditions that allowed fires to spread across drained and degraded peatlands in Sumatra and Kalimantan. These fires burned an estimated 2.6 million hectares of land, destroying forests, damaging peat-swamp habitats, and threatening wildlife that depends on these ecosystems, including endangered Bornean orangutans.

Even when habitats are not completely destroyed, extreme disturbances can degrade their quality and weaken their ability to provide food, shelter, and breeding conditions. For example, during marine heatwaves coral reefs expel the symbiotic algae that provide much of their energy, leading to bleaching, disease, and death.  As live coral declines, reefs lose the structure that fish, invertebrates, and other marine species rely on for shelter, feeding, and reproduction. 

In 2024, the Great Barrier Reef experienced its fifth mass bleaching event since 2016 and its most widespread on record, following what (at the time) was the fifth strongest El Niño ever recorded. 2025 surveys showing hard coral cover declines on nearly half of the 124 reefs assessed and losses reaching 70.8% on some reefs.

When Wildlife Shifts Their Behavior and Movement

A strong El Niño can also accelerate biodiversity loss by changing how wildlife behave under stress. When drought reduces food and water, animals may alter their daily behavior by feeding closer to people, entering farms more often, and taking greater risks to survive. 

In Zambia’s Luangwa River Basin and surrounding Eastern Region, the 2023–2024 El Niño-linked drought reduced food and water for people, livestock, and wildlife, which in turn increased confrontations between humans and wildlife. As food and water became scarcer, elephants and other wildlife moved closer to farms, settlements, and shared water points.  Resource Africa reported that elephants and hippos destroyed more than 200 hectares of crops in the Eastern Region. 

Along the U.S. West Coast, marine heatwaves and El Niño-linked warm years can compress cool, nutrient-rich upwelling ocean habitats, pushing humpback whales and their prey closer to nearshore fishing areas. This movement increases overlap with fixed fishing gear, including Dungeness crab pots and vertical lines. A recent study found that reported humpback whale entanglements were highest in years with limited suitable habitat and feeding grounds,  including spikes during the 2015–2016 marine heatwave and El Niño period and 31 confirmed humpback entanglements in 2024.

When Conservation Efforts Are Disrupted

A strong El Niño can intensify extreme storms and flooding, disrupting the infrastructures that conservation work depends on. Protected areas rely on well-maintained infrastructure and operational equipment, such as roads, fences, vehicles, communication systems, and monitoring tools. These resources help staff patrol boundaries, monitor conditions, care for wildlife, and respond quickly to threats.

In Kenya, the 2023–2024 El Niño likely contributed to the severe flooding in March–May 2024.. The floods affected more than 380,000 people, damaged more than 60 roads, destroyed bridges, and caused about $35 million in losses. These disruptions also reached conservation sites, including Ol Pejeta Conservancy, where the flooding badly damaged perimeter and chimpanzee sanctuary fences, closed the chimpanzee facility for months, and increased wildlife-security and chimp-welfare costs.

Climate extremes around strong El Niño periods can also weaken conservation by stretching the institutions responsible for enforcement and land protection. When agencies are forced to prioritize emergency response, fewer resources may be available to prevent, monitor, and stop illegal burning, land clearing, and wildlife crime. 

Peru’s record 2024 wildfires show how quickly this strain can escalate when drought, human-started fires, and limited response capacity converge. The Global Wildfire Information System recorded about 10,400 fires in Peru in 2024, more than double the previous record. As fires spread across grasslands, dry forests, coastal areas, and the Amazon, limited capacity made it harder to contain the crisis and protect vulnerable ecosystems.

Toward More El Niño-Resilient Ecosystems

Building El Niño-resilient ecosystems starts with regenerative approaches that strengthen biodiversity, restore ecological function, and support the communities that depend on healthy landscapes. Regenerative agriculture can improve soil health by increasing organic matter, helping farms retain more water during drought, reducing erosion during floods, and supporting the soil biodiversity that sustains nutrient cycling, crop productivity, and climate resilience. Agroforestry builds on this resilience by bringing trees back into working landscapes, creating shade, habitat, and food sources for wildlife while helping farmers diversify their livelihoods through fruit, timber, fuelwood, fodder, and other tree-based products.

El Niño resilience also depends on stronger institutions and sustained investment for the people working closest to biodiversity loss. Frontline communities, Indigenous peoples, local leaders, conservation organizations, and protected-area agencies need resources before extreme conditions escalate into disasters. Funding should support early-warning systems, biodiversity monitoring, emergency planning, and rapid response, while long-term partnerships can help protect vulnerable species and ecosystems before losses become harder to reverse.

Reducing the pressures that make biodiversity vulnerable is just as important as preparing for El Niño itself. Ecosystems are better able to survive droughts, floods, fires, and marine heatwaves when species have enough food, clean water, breeding sites, shelter, and space to move before extreme conditions arrive. 

Cutting emissions can reduce the heat stress that forces plants and animals beyond their limits and makes recovery harder after an El Niño event. Protecting and reconnecting habitats can help wildlife move away from burned forests, dried wetlands, flooded nesting areas, or warming ocean zones. Managing invasive species can also reduce competition and predation, giving native plants and animals a better chance to recover when extreme events disrupt food webs.

Biodiversity is the foundation of global food, health, and economic systems, making its loss a direct threat to human security and well-being. A Super El Niño would intensify that threat by pushing already weakened ecosystems closer to their limits. The way forward is clear: scale regenerative systems that sustain biodiversity and livelihoods, support frontline communities and the institutions they depend on, and reduce the pressures pushing species and ecosystems toward collapse.

A Super El Niño should inspire a global response rooted in science, equity, and local action. Support EARTHDAY.ORG’s Canopy Tree Project to restore habitats, expand tree cover, and strengthen communities, and join The Great Global Cleanup to remove waste and plastic pollution from the ecosystems we all depend on.

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A pristine green lawn might look neat, but beneath its green facade lies an ecological void. But lawns consume vast amounts of water, demand regular mowing, are often maintained with pesticides and a range of other chemicals and offer almost nothing for local wildlife. 

Back and front yard meadows, by contrast, are vibrant, buzzing with insect life, low-maintenance, and environmentally powerful alternatives. Whether you have a few square feet or a whole acre, if you are lucky enough to have a garden, converting part of your yard into a native meadow is one of the most impactful steps you can take for the planet.

Let Backyard Biodiversity Bloom 

The rapid decline of all three,  insects, birds, and small mammals, in North America is largely due to major habitat loss—and conventional lawns are part of the problem. Barren green lawns support very little wildlife because they  lack food, shelter, and diversity. Backyard meadows, filled with native grasses and wildflowers, reverse that trend.

A native meadow provides nectar for pollinators, seeds for birds, and cover for small animals. Even a small patch can function as a mini refuge, especially in urban and suburban environments where natural habitat is scarce. Native plants support more native insects than non-native ones, which in turn support native bird populations. Urban meadows also offer critical help to bees and butterflies, many of which are declining due to habitat loss and lack of food

By planting a  meadow in your yard, you’re not just growing flowers. You’re rebuilding an ecosystem.

Saving Water and Reducing Chemical Runoff

Turfgrass lawns are one of the most water-intensive landscaping choices any of us can make. According to the U.S. Environmental Protection Agency, nearly one-third of all residential water use in the United States goes to landscaping, primarily sterile green lawns. In hot or drought-prone areas, this is both wasteful and unsustainable.

By contrast, urban meadows composed of native plants which are adapted to the local climate typically require no irrigation after establishment and are extremely low maintenanceThis makes them ideal for both drought resilience and water conservation. Meadow soil retains more moisture and resists erosion. Plus meadows reduce stormwater runoff, filtering rainwater through deep root systems that trap sediments and pollutants. This keeps nearby streams and rivers cleaner and helps recharge groundwater.

Flowers Fighting Climate Change

A backyard or garden meadow may seem like a small gesture, but it plays a vital  role in the global fight against climate change. Unlike shallow-rooted turf, native meadow plants often have roots that reach several feet underground. These deep roots store carbon in the soil and contribute to a long-term buildup of organic matter, effectively turning your yard into a carbon sink. 

A 2019 study published by Nature Communications confirms that native grasslands sequester significant amounts of carbon, particularly in the roots and upper layers of soil.

By supporting microbial communities and reducing the need for gas-powered mowing, backyard meadows further lower carbon emissions and air pollution.

Mental Health and Wellness Benefits

On top of all of this nature has profound psychological benefits—and backyard meadows bring nature right to your doorstep. Numerous studies have shown that green, biodiverse environments reduce anxiety, improve mood, and enhance cognitive function.

A 2019 study published in Nature Scientific Reports found that just two hours a week in nature significantly improves health and well-being. Meadows, with their seasonal color shifts, buzzing pollinators, and flowing grasses, offer a rich sensory experience that far outweighs staring at a uniform green lawn.

Incorporating natural, dynamic landscapes like meadows into residential areas not only enhances beauty but provides a calming space for mindfulness and connection. Watching goldfinches perch on coneflowers or monarch butterflies flutter through milkweed isn’t just relaxing—it’s rejuvenating.

Lower Maintenance and Long-Term Savings

Lawns require constant upkeep: mowing, fertilizing, watering, aerating, and reseeding. This not only costs time but also money. Americans spend over $36 billion annually on lawn care.

Meadows, once established, require mowing only once or twice a year, typically in early spring or late fall, to control woody growth. They don’t require fertilizers, herbicides, or irrigation, which significantly reduces maintenance costs and environmental impact.

By switching even part of your lawn to meadow, you cut back on fuel for lawn mowers (and the emissions they produce), reduce reliance on chemical inputs, and free up your weekends.

A Simple Meadow Plan

You don’t need to rewild your entire yard to make a difference. Start small and scale up over time.

Here’s a basic 6-step meadow plan:

1. Pick a sunny area with 6+ hours of light.
   
2. Remove turf by smothering with cardboard or sheet mulch.
   
3. Prepare your soil by raking it and then choose a native seed mix for your region
   
4. Sow in fall or early spring.
   
5. Water lightly until seeds sprout; no need to fertilize. Watch your meadow grow.
   
6. Mow once in the first year, and once annually thereafter.

In a few seasons, you’ll have a vibrant, living meadow that supports wildlife, reduces pollution, and looks stunning year-round.

Final Thought

A backyard meadow is more than a landscaping choice. It’s an ecological statement. By trading turf for wildflowers, you become part of a growing movement to restore balance between humans and nature. 

There are loads more tips on our website here on supporting bees and other pollinators. Meadows conserve water, combat climate change, and invite beauty and life back into the landscape. Plus your neighbors will be inspired and hopefully copy you!

This article is available for republishing on your website, newsletter, magazine, newspaper, or blog. The accompanying imagery is also cleared for use. Please ensure that the author’s name and their affiliation with EARTHDAY.ORG are credited. Kindly inform us if you republish so we can acknowledge, tag, or repost your content. You may notify us via email at davies@earthday.org or fielder@earthday.org. Want more articles? Follow us on substack.

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