The Times Australia
The Times World News

.
The Times Real Estate

.

How floods affect wildlife, and how you can help them

  • Written by Euan Ritchie, Professor in Wildlife Ecology and Conservation, Centre for Integrative Ecology, School of Life & Environmental Sciences, Deakin University
how floods affect wildlife, and how you can help them

For over two decades, bull sharks have called a Brisbane golf course home after, it’s believed, a flood washed them into the course’s lake in 1996. Now, after severe floods connected their landlocked home back to the river system, these sharks have gone missing[1], perhaps attempting to seek larger water bodies.

This bizarre tale is one of many accounts illustrating how Australia’s wildlife respond to flooding. But the sad reality is many don’t survive. Those that do may find their homes destroyed or, like those bull sharks and others, find themselves displaced far from their original homes or suitable habitat.

The RSPCA and other wildlife care organisations have received hundreds of calls to help rescue and care for stranded animals[2]. But the true toll on wildlife will remain unknown, in part because we know surprisingly little about the impacts of floods on wildlife[3].

Still, as many animals have amazing abilities to survive fire[4], so too do many possess the means to survive or even profit from floods. After all, Australia’s wildlife has evolved over millions of years to survive in this land of extremes.

How wildlife responds to floods

Floods rapidly turn land habitats into underwater habitats, allowing aquatic animals to venture into places you wouldn’t expect. Flooding during northern Australia’s annual wet season, for example, sees crocodiles occasionally turn up in people’s backyard pools[5].

Land-dwelling animals typically don’t fair as well in floods. Some may be able to detect imminent inundation and head for higher, drier ground. Others simply don’t have the ability or opportunity to take evasive action in time. This can include animals with dependent young in burrows, such as wombats, platypus and echidnas.

The extent to which flooding affects animals[6] will depend on their ability to sense what’s coming and how they’re able to respond. Unlike humans who must learn to swim, most animals are born with the ability.

Echidnas, for example, have been known to cover large areas of open water, but fast flowing, powerful floods pose a very different proposition.

Animals that can fly – such as many insects, bats and birds – may be able to escape. But their success will also partly depend on the scale and severity of weather systems causing floods.

Many birds, for example, couldn’t get away from the heavy rain and seek shelter, ending up waterlogged[7]. If birds are exhausted and can’t fly, they may suffer from exposure and also be more vulnerable to predators, such as feral cats and foxes.

During floods, age old predator-prey relationships[8], forged through evolution, can break down. Animals are more focused on self preservation, rather than their next meal. This can result in strange, ceasefire congregations.

For example, a venomous eastern brown snake was filmed being an unintentional life raft for frogs and mice. Likewise, many snakes, lizards and frogs are expert climbers, and will seek safety in trees – with or without company.

Some spiders have ingenious ways of finding safety, including spinning balloon-like webs to initiate wind-driven lift-off: destination dry land. This is what happened[9] when Victoria’s Gippsland region flooded last year.

Thick blankets of spiderwebs between Sale and Longford in East Gippsland, Victoria. AAP Image/Supplied by Jeff Hobbs

One of the challenges of extreme events is it can make food hard to find. Some animals – including microbats, pygmy possums, and many reptiles – may reduce their energy requirements by essentially going to “sleep” for extended periods, commonly referred to as torpor. This includes echidnas[10] and Antechinus[11] (insect-eating marsupials), in response to bushfire.

Might they do the same during floods? We really don’t know, and it largely depends on an animal’s physiology. In general, invertebrates, frogs, fish and reptiles are far better at dealing with reduced access to food than birds and mammals.

During floods species will share refuge such as trees. Damian Kelly Photography

What happens when floods recede?

Flooding may provide a bounty for some species. Some predators such as cats, foxes, and birds of prey, may have access to exhausted prey with fewer places to hide. These same predators may scavenge the windfall of dead animals.

Fish, waterbirds, turtles and other aquatic or semi-aquatic life may benefit from an influx of nutrients, increasing foraging opportunities and even stimulating breeding events[12].

Other wildlife may face harsher realities. Some may become trapped far from their homes. Those that attempt to return home will have to run the gauntlet of different habitats, roads, cats, dogs and foxes, and other threats.

Read more: 'One of the most extreme disasters in colonial Australian history': climate scientists on the floods and our future risk[13]

Even if they make it home, will their habitats be the same or destroyed? Fast and large volumes of water can destroy vegetation and other habitat structures (soils, rock piles) in minutes, but they may take many years or decades to return, if ever.

Floodwaters can also carry extremely high levels of pollution, leading to further tragic events such as fish kills and the poisoning of animals throughout food chains.

How can you help?

Seeing wildlife in distress is confronting, and many of us may feel compelled to want to rescue animals in floodwaters. However, great caution is required.

Wading into floodwaters can put yourself at significant risk. Currents can be swift. Water can carry submerged and dangerous obstacles, as well as chemicals, sewerage and pathogens. And distressed animals may panic when approached, putting them and yourself at further risk.

For example, adult male eastern grey kangaroos regularly exceed 70 kilograms with long, razor sharp claws and toe nails, and powerful arms and legs. They’ve been known to deftly use these tools to drown hostile farm dogs[14] in dams and other water bodies.

Read more: 10 million animals are hit on our roads each year. Here’s how you can help them (and steer clear of them) these holidays[15]

So unless you’re a trained wildlife expert or animal carer, we don’t recommend you try to save animals yourself. There is more advice online, such as here[16] and here[17].

If you’d like to support the care and recovery of wildlife following the floods, a number of organisations are taking donations, including WWF Australia[18], WIRES[19] and the RSPCA[20].

What does the future hold?

While many Australian wildlife species are well adapted to dealing with periodic natural disasters, including floods, we and wildlife will face even more intense events in the future under climate change. Cutting greenhouse gas emissions can lessen this impact[21].

For common, widespread species such as kangaroos, the loss of individuals to infrequent, albeit severe, events is tragic but overall doesn’t pose a great problem. But if floods, fires and other extreme events become more regular, we could see some populations or species at increased risk of local or even total extinction[22].

This highlights how Earth’s two existential crises – climate change and biodiversity loss – are inextricably linked[23]. We must combat them swiftly and substantially, together, if we’re to avoid a bleak future.

Read more: Mass starvation, extinctions, disasters: the new IPCC report’s grim predictions, and why adaptation efforts are falling behind[24]

References

  1. ^ have gone missing (www.goldcoastbulletin.com.au)
  2. ^ rescue and care for stranded animals (www.abc.net.au)
  3. ^ impacts of floods on wildlife (doi.org)
  4. ^ abilities to survive fire (theconversation.com)
  5. ^ people’s backyard pools (www.cairnspost.com.au)
  6. ^ flooding affects animals (www.mdpi.com)
  7. ^ waterlogged (www.theguardian.com)
  8. ^ predator-prey relationships (www.australiangeographic.com.au)
  9. ^ what happened (theconversation.com)
  10. ^ echidnas (royalsocietypublishing.org)
  11. ^ Antechinus (royalsocietypublishing.org)
  12. ^ stimulating breeding events (www.sciencedirect.com)
  13. ^ 'One of the most extreme disasters in colonial Australian history': climate scientists on the floods and our future risk (theconversation.com)
  14. ^ drown hostile farm dogs (www.abc.net.au)
  15. ^ 10 million animals are hit on our roads each year. Here’s how you can help them (and steer clear of them) these holidays (theconversation.com)
  16. ^ here (wildlife.org.au)
  17. ^ here (www.rspcaqld.org.au)
  18. ^ WWF Australia (donate.wwf.org.au)
  19. ^ WIRES (www.wires.org.au)
  20. ^ RSPCA (www.supportrspcaqld.org.au)
  21. ^ lessen this impact (www.ipcc.ch)
  22. ^ increased risk of local or even total extinction (www.nature.com)
  23. ^ inextricably linked (360info.org)
  24. ^ Mass starvation, extinctions, disasters: the new IPCC report’s grim predictions, and why adaptation efforts are falling behind (theconversation.com)

Read more https://theconversation.com/the-sad-reality-is-many-dont-survive-how-floods-affect-wildlife-and-how-you-can-help-them-178310

The Times Features

Best Deals on Home Furniture Online

Key Highlights Discover the best deals on high-quality outdoor furniture online. Transform your outdoor space into a stylish and comfortable oasis. Explore a wide range of d...

Discover the Best Women's Jumpers for Every Season

Key Highlights Explore lightweight jumpers for spring and summer, ensuring breathability and ease. Wrap up warm with cozy wool jumpers for the chilly autumn and winter season...

Uncover the Elegance of Gorgeous Diamond Tennis Necklaces

Key Highlights Diamond tennis necklaces are a timeless piece of jewelry that exudes elegance and sophistication. They feature a continuous line of brilliant-cut diamonds, cre...

Dental Implants vs. Dentures: Which Is Better for You?

When it comes to replacing missing teeth, two of the most common options are dental implants and dentures. Both have their advantages and disadvantages, so choosing between them ...

What Neck Pain Really Means (And Why It’s More Than Just Poor Posture)

Neck pain is often brushed off as something temporary — a tight spot after a long day at the desk or a poor night’s sleep. But when the discomfort keeps returning, it could be a ...

The Work of Gosha Rubchinskiy: Fashion, Culture, and Youth

From Designer to Cultural Architect Gosha Rubchinskiy is not just a fashion designer—he's a cultural force. Born in Moscow in 1984, Rubchinskiy began his career in fashion in t...

Times Magazine

The Essential Guide to Transforming Office Spaces for Maximum Efficiency

Why Office Fitouts MatterA well-designed office can make all the difference in productivity, employee satisfaction, and client impressions. Businesses of all sizes are investing in updated office spaces to create environments that foster collaborat...

The A/B Testing Revolution: How AI Optimized Landing Pages Without Human Input

A/B testing was always integral to the web-based marketing world. Was there a button that converted better? Marketing could pit one against the other and see which option worked better. This was always through human observation, and over time, as d...

Using Countdown Timers in Email: Do They Really Increase Conversions?

In a world that's always on, where marketers are attempting to entice a subscriber and get them to convert on the same screen with one email, the power of urgency is sometimes the essential element needed. One of the most popular ways to create urg...

Types of Software Consultants

In today's technology-driven world, businesses often seek the expertise of software consultants to navigate complex software needs. There are several types of software consultants, including solution architects, project managers, and user experienc...

CWU Assistive Tech Hub is Changing Lives: Win a Free Rollator Walker This Easter!

🌟 Mobility. Independence. Community. All in One. This Easter, the CWU Assistive Tech Hub is pleased to support the Banyule community by giving away a rollator walker. The giveaway will take place during the Macleod Village Easter Egg Hunt & Ma...

"Eternal Nurture" by Cara Barilla: A Timeless Collection of Wisdom and Healing

Renowned Sydney-born author and educator Cara Barilla has released her latest book, Eternal Nurture, a profound collection of inspirational quotes designed to support mindfulness, emotional healing, and personal growth. With a deep commitment to ...

LayBy Shopping