Elephant Numbers in South Africa

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Re: Elephant Numbers in South Africa

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Big Trunks, Bigger Questions: Rethinking Elephant Numbers in Kruger

Dr Sam Ferreira - South African National Parks | 23.01.2025

What the Research Says About Elephant Numbers

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All we know is that change is certain, and elephants have and will continue to change the ecosystems in which they occur even after we have gone. Photo: Rudi van Aarde

So, how many elephants is too many elephants? It’s a question people have wrestled with for ages. Kruger National Park, home to one of Africa’s largest elephant populations, has seen their numbers grow from just a handful in the early 1900s to over 31,000 by 2020. That’s a lot of elephants! A recent study using smarter aerial surveys and fancy math gives us a more clear picture of just how fast these gentle giants are multiplying. Turns out, since 2013, their numbers have been growing by about 5.3% each year.

But here’s the twist: counting elephants isn’t as simple as flying over the park and tallying them. Old methods often missed a lot—thanks to things like human error or elephants being hard to spot from the air. This new approach combines traditional counts with statistical adjustments, and in 2020, scientists estimated 31,324 elephants (give or take a few thousand).

Is this a conservation success story? Absolutely! But it also comes with challenges. For some people, more elephants mean more pressure on Kruger’s trees, water, and other animals. Still, the study points out that the number of elephants isn’t the whole story—it’s what they’re doing, where they’re hanging out, and how long they’re sticking around that really matters.

Jumbo Impact: How Elephants Build Resilient Ecosystems

Elephants are like nature’s architects—but sometimes they double as demolition crews. For thousands of years, they’ve shaped the land with their tree-pushing, seed-spreading habits. But human activities disrupted these natural rhythms by breaking up habitats. By the 20th century, conservation efforts brought elephants back to Kruger. Great news, right? Well, managing their growing influences on the park has been a big task ever since.

Elephants are key players in the ecosystem. They open dense areas, spread seeds, and even help combat climate change. But let’s be honest: they can also cause some trouble, like knocking down too many trees in delicate spots. It’s all about the rhythm of nature—because let’s be honest, elephants aren’t out here trying to throw a wild party! They’re just going where there is sufficient water, food, and shade like the rest of us would.

Why Resources Matter

Here’s the deal: elephants love waterholes. During dry seasons, they crowd around these spots, munching on nearby trees and plants. In wetter months, they spread out, giving the land a break. That natural rhythm keeps ecosystems healthy.

But when humans step in—say, by creating artificial waterholes—things can go a little sideways. Too many elephants in one spot all the time can damage the vegetation and soil over time. Kruger learned this lesson the hard way. Now, they’ve removed many artificial water points, letting elephants move more naturally and keeping their impact in check.

The “Golden Era” Myth

Some people look back at the 1960s-90s as the “golden age” of conservation when everything was perfectly managed. But was it really? Back then, methods like culling (reducing populations) and controlled burning sometimes caused more harm than good. Population numbers of other animals, like zebra and antelope, dropped significantly.

Today, Kruger takes a more thoughtful approach. Instead of micromanaging elephants, they aim to manage towards a healthy ecosystem where all species can thrive.

Are Elephants Really Wrecking Kruger? Not So Fast!

Saying that 30,000 elephants are destroying Kruger is like blaming a bee for ruining a garden. It’s not that simple. Elephants go where the resources are. When there’s plenty of water and food, they stick around, snack on trees, and yes, sometimes knock a few over. But when resources shift, so do the elephants.

The real question isn’t “How many elephants are too many?” but rather, “Why are they staying in one place for so long?” For example, artificial waterholes can turn quiet groves into elephant party zones, while droughts or greener pastures elsewhere also influence their movements.

Humans and Elephants: An Old Dance

Two hundred years ago, Kruger was the place for elephants. But by the late 1800s, hunting and human expansion nearly wiped them out. By 1900, there were zero elephants in the park! During this low-elephant era, trees grew tall and dense—the very landscapes some people now see as “natural.”

Here’s a fun fact: back in the day, humans unintentionally managed elephants by creating areas of danger and safety. Villages, hunting grounds, and mining sites kept elephants away from certain spots, letting the land recover. It’s a neat reminder that humans and elephants have been influencing each other’s movements for centuries.

A Smarter Way Forward: Adaptive Management

So, what’s the solution? It’s not about forcing a decrease in elephant numbers or letting them grow wild. Instead, Kruger focuses on “adaptive management,” which means solving specific problems as they come up. For instance, if elephants are overusing a sensitive area, they might close nearby waterholes or set up temporary ranger posts to encourage the elephants to move elsewhere.

It’s not a one-size-fits-all solution—it’s a smarter, more flexible way to work with nature. After all, elephants are not destructive bulldozers. They’re ecosystem engineers who play a complex and important role in the environment.

The Takeaway: It’s More Than Just Numbers

At the end of the day, elephants aren’t just numbers on a chart. They’re living, breathing creatures with behaviours that are deeply connected to the world around them. Managing their population isn’t about finding a magical number. It’s about understanding their impact, learning from history, and making thoughtful decisions.

Kruger’s elephants show us that conservation isn’t a formula—it’s a dance. A dance between science, history, and nature itself. The real question isn’t just how many elephants Kruger can handle—it’s how we, as caretakers of this planet, choose to live alongside these amazing animals.

Listen to an interview explaining nuances about elephants in Kruger:

https://www.conservationaction.co.za/ou ... uger-park/

Source: https://www.sanparks.org/conservation/s ... -in-kruger


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Re: Elephant Numbers in South Africa

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I immediately discard anything Ferreira says, and I'm not the only one... O**


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Re: Elephant Numbers in South Africa

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I know that, but he has the right to express his opinion like the others O**


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Re: Elephant Numbers in South Africa

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The science of counting Kruger’s elephants

Posted on February 11, 2025 by teamAG in the Decoding Science post series.

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The elephant is one of Africa’s most ecologically significant species. Monitoring their populations is essential for conservation success at a broad level. South Africa’s Kruger National Park is a refuge for these giants. However, the size of Kruger’s elephant population has been discussed for decades. How do we count the elephants in an area of nearly 2 million hectares? How many elephants are too many? And are elephants really a problem? A new study examines the science of counting Kruger’s elephants.
______________________________________________________________________________________________________________
For decades, scientists and conservationists have debated the size of Kruger National Park’s elephant population. Counting these massive, yet often elusive animals across the national park is no small feat.

New research shows we have been underestimating the number of Kruger’s elephants over the past few years, and improved aerial survey techniques are revealing surprising insights into Kruger’s elephant population. These findings can help us better understand elephant numbers, movement patterns, and ecological impact.

Rethinking how we count

Counting elephants is a challenge. Traditional aerial survey methods in Kruger relied on human spotters, often leading to undercounts or inconsistencies.

For decades, Kruger relied on a ‘total count’ method, which involved surveying river catchment areas and recording every visible elephant seen during flyovers. But, an elephant may not be visible while hiding under a tree, or may be hard to see against certain landscapes. And different spotters may have varying abilities in seeing elephants. Due to high flying speeds, observer fatigue, and the pachyderms blending into the landscape, these total counts often missed seeing several individuals on the ground. This meant a significant portion of the population was not accounted for. This method also leaves room for sample errors. Historic total counts tried to count every single elephant, but elephants don’t stand still.

But the recent study included statistical adjustments in the counting method, to help improve precision. The study authors (Ferreira et al., 2024) used data on elephants encountered during annual rhino aerial surveys in Kruger in 2013, 2015 and 2017 and from the study survey conducted in 2020 to form new estimates.

These sample-based aerial surveys – which focus on specific blocks of land at lower altitudes and slower speeds – provide a more accurate picture. By combining sample counts with statistical models, researchers now estimate that Kruger had approximately 31,324 elephants in 2020 (this number could be between 28,457 and 34,191 at any time in 2020). These results also showed a growth rate of 5.3% yearly since 2013.

This marks an extraordinary recovery from the early 1900s, when elephants in the area now encompassing the Kruger National Park were virtually wiped out due to hunting and habitat destruction.

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A large herd crosses the landscape

Detecting elephants: Better methods for better results

The improved precision found in this sample-based survey method has revealed essential nuances in how elephants are counted. Elephants are relatively easy to spot from the air compared to smaller species. But factors such as elephant group size and observer experience can still affect the accuracy of aerial surveys. Researchers found that larger herds were easier to detect than smaller, more dispersed groups. This means that surveys conducted at higher speeds and altitudes, like traditional total counts, often missed smaller groups or solitary animals, leading to underestimations. In contrast, sample-based surveys conducted at slower speeds and lower altitudes improved detection rates, allowing researchers to count more elephants with greater precision.

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High flying speeds during total counts meant many elephants were missed or group sizes underestimated

Why elephant numbers are booming

The elephant population has recovered since the early 1900s after conservation efforts improved in the Kruger region. By 1967, when culling was introduced as a management tool, the population had reached more than 7,000. Throughout the culling programme, which took place between 1967 and 1995, management aimed to maintain a population size of 7,000 to 8,500 elephants to prevent overgrazing. With no such interventions today, elephants have surged dramatically. By 2017, Kruger had its largest recorded elephant population, estimated at over 22,000.

But elephant births and deaths alone don’t tell the whole story. The mammals also move in response to environmental pressures. During a recent drought, park management recorded a net movement of elephants into Kruger from private reserves. The study also notes that in times of “limited poaching of elephants in the Kruger” and periods of high poaching pressure in adjacent areas, there were also steep elephant population increases in Kruger.

These migrations complicate population estimates.

More elephants, more impact – but what does that mean?

With over 30,000 of these pachyderms in Kruger, there are concerns about their impact on the park’s ecosystems. They are often described as ‘ecosystem engineers’. And it’s not just about how many elephants are present in the park at any one time. It’s about where they are, and what they do when they are there. “Elephants are key players in the ecosystem. They open dense areas, spread seeds, and even help combat climate change.” said study author Dr Sam Ferreira in a recent article. “But, they can also cause some trouble, like knocking down too many trees in delicate spots.” As such, elephants shape the landscape positively and negatively.

Historically, Kruger relied on artificial waterholes, which allowed elephants to stay in the same areas for longer periods. This led to overgrazing and soil degradation over large tracts of land. Recognising this issue in recent years, Kruger’s management removed many artificial water points, encouraging more natural movement patterns.

Many debates surround the idea that elephants are destroying Kruger’s trees, but the reality is more nuanced. As Ferreira points out: “Saying that 30,000 elephants are destroying Kruger is like blaming a bee for ruining a garden. It’s not that simple. Elephants go where the resources are. When there’s plenty of water and food, they stick around, snack on trees, and, yes, sometimes knock a few over. But when resources shift, so do the elephants.”

Ferreira highlights that Kruger’s management strategy emphasises adaptive management rather than focusing on an ideal elephant number. This involves responding to specific environmental pressures as they arise. For instance, if elephants overuse a sensitive area, management may close nearby waterholes or introduce temporary deterrents to encourage natural movement, says Ferreira.

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Kruger elephants at sundown

The bigger picture

Across Africa, elephant populations have been devastated by poaching and habitat loss. Yet, in Kruger (and some other regions), elephants thrive. At the same time, managing a large and ever-dynamic elephant population remains challenging. Simply reducing numbers through interventions like culling is no longer considered a viable solution. Instead, conservationists focus on understanding elephant behaviour, movement, and ecological roles to make decisions.

“At the end of the day, elephants aren’t just numbers on a chart,” says Ferreira. “They’re living, breathing creatures deeply connected to their environment. Managing their population isn’t about finding a magic number – it’s about understanding their impact, learning from history, and making thoughtful decisions.”

Kruger’s elephants remind us that conservation has no fixed formulas but requires ongoing dialogue and exploration. By refining our survey techniques and embracing adaptive management, the stewards of Kruger’s elephants can ensure that the national park remains a thriving haven for elephants and the countless other species that share this remarkable landscape.

Reference
  • Ferreira, S.M., Crowhurst, E.T., Greaver, C. & Simms, C. (2024). Sample-based estimates of elephants in Kruger National Park, South Africa. African Journal of Wildlife Research, 54(1), (24 September 2024).
  • Ferreira, S.M. (2024). Big trunks, bigger questions: Rethinking elephant numbers in Kruger. SANParks.org. 23 January 2025.
  • Van Aarde, R., Whyte, I. & Pimm, S. (1999). Culling and the dynamics of the Kruger National Park African elephant population. Animal Conservation. 2. 287-294. 10.1017/S1367943099000621.


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Re: Elephant Numbers in South Africa

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New research shows we have been underestimating the number of Kruger’s elephants over the past few years,

Duh... 0-

For decades, Kruger relied on a ‘total count’ method, which involved surveying river catchment areas and recording every visible elephant seen during flyovers. But, an elephant may not be visible while hiding under a tree

What a stupid comment. These "total counts" were never intended to be perfect, but were damned close! They took place at the end of winter, and missed very few animals as shown by the small error intervals year after year. Elephant and buffalo herds were photographed and counted meticulously. Ferreira et al still have no clue how many ellies there are, and their "superior" system still has a variation of 20%, which is useless scientifically... :evil:

I am confident there are now 50 000 elephant, as the late great Dr Joubert worked out...


Ferreira is trying to justify what is unjustifiable, laziness in doing proper aerial censuses. Of course the truth that would reveal will be too shocking, and so just continue to make it up as you go along. :evil:


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Re: Elephant Numbers in South Africa

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As with a lot of other things ;-)


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Re: Elephant Numbers in South Africa

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These articles pop up quite regularly now
Mostly with the agenda of saying how artificial population control ie culling is not necessary and the environment is stable despite the influence of huge / uncontrolled numbers of elephant


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Re: Elephant Numbers in South Africa

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Yup. Their policy of non-intervention is making them nervous, so the knee-jerk is to self-justify. :O^


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Re: Elephant Numbers in South Africa

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Wouldn't it be great to get a credible, convincing number of elephants in KNP?
Who can provide it?


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Re: Elephant Numbers in South Africa

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They just need to do a full aerial helicopter census, the recipe is there!


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