Dingo landscape impact seen from space

“Dingoes indirectly affect vegetation by controlling numbers of kangaroos and small mammals,” ecologist Mike Letnic said on Wednesday.

“The differences in grazing pressure on each side of the fence were so pronounced they could be seen from space.”

With few dingoes preying on them, kangaroo numbers increased, leading to overgrazing, Prof Letnic said.

This, in turn, was likely to have reduced vegetation, damaging the quality of the soil, which can hinder the survival of smaller animals, such as the critically endangered bird, the Plains Wanderer.

The dingo cull south of the fence continues today. Grazier and government wild dog control programs use poison baits, trapping and shooting to manage the population.

“The removal of apex predators can have far-reaching effects on ecosystems that manifest across very large areas,” Prof Lentic said.

“These effects have often gone unnoticed because large predators were removed from many places a long time ago.”

The dingo fence – which spans from Jimbour on the Darling Downs in Queensland to arid land west of the Eyre peninsula on cliffs of the Nullarbor Plain – was erected in the 1880s to protect livestock in southeastern Australia.

At 5600 kilometres, it’s one of the longest structures in the world.

Geographer Adrian Fisher – who studied the NASA and United States Geological Survey’s Landsat program images captured since 1988 – said the vegetation’s response to rainfall was another key difference between areas with and without dingoes.

“While rainfall caused vegetation to grow on both sides of the fence, we found that vegetation in areas without dingoes didn’t grow as much,” he said.

Changes to vegetation triggered by the removal of dingoes have also been shown to reshape the desert landscape by altering wind flow and sand movement.

While there are other contributing factors to the difference in vegetation – such as how the land was used – the satellite imagery showed dingoes played a central role.

“There were clear differences in landscape on either side of the dingo fence,” Dr Fisher said.

“Dingoes may not be the whole explanation, but they are a key part of it.”

The University of NSW Centre for Ecosystem Science study was published in Landscape Ecology.

Note: This article have been indexed to our site. We do not claim legitimacy, ownership or copyright of any of the content above. To see the article at original source Click Here

Related Posts
The American dream is now a huge electric truck thumbnail

The American dream is now a huge electric truck

Every year, companies debut their best ads during the Super Bowl, hoping to convince millions of Americans they know exactly what the country needs. Last night’s celebrity-studded commercials sent a clear message: It’s time to buy an electric vehicle — preferably a large one, like a truck or SUV. General Motors, BMW, Chevrolet, and Kia…
Read More
Nano-chocolates that store hydrogen thumbnail

Nano-chocolates that store hydrogen

Hydrogen, being a highly volatile gas and Clean energy source, can be considered a promising energy carrier for the future. However, storing Hydrogen is costly. It either needs to be kept under pressurized tanks at up to 700 bar, or it must be liquified, which means cooling it down to minus 253 degrees Celsius. Both…
Read More
Formez-vous à Blender un logiciel libre de modélisation 3D, la formation Udemy à -80% thumbnail

Formez-vous à Blender un logiciel libre de modélisation 3D, la formation Udemy à -80%

Professionnel ou amateur, la modélisation 3D vous passionne ? Vous souhaitez créer vos propres jeux vidéo ? Le logiciel de 3D Blender est particulièrement performant, et il possède un avantage de taille par rapport à ses concurrents : il est gratuit. Udemy vous propose donc une formation pour découvrir ce logiciel et apprendre à créer des environnements 3D…
Read More
Study reveals brain processes involved in vision thumbnail

Study reveals brain processes involved in vision

Scientists have long hypothesized that the neocortex makes top-down predictions about future stimuli by learning patterns in sensory data. According to this hypothesis, distinct reactions have been noted in both spiking and somatic calcium imaging data in response to visual stimuli that match vs those that violate patterns. However, whether these pattern-violation signals differ between
Read More
The melting ice is deforming the Earth! thumbnail

The melting ice is deforming the Earth!

Lorsque les calottes glaciaires fondent, la croûte terrestre se déforme. De manière localisée, pensaient jusqu'alors les chercheurs. Mais des données satellite remettent aujourd'hui l'idée en question. Ces deux dernières décennies, la fonte de la glace arctique a provoqué une déformation importante de la croûte terrestre sur une grande partie de l'hémisphère Nord.Lorsque la glace fond, la…
Read More
Index Of News