• Email Us: [email protected]
  • Contact Us: +1 718 874 1545
  • Skip to main content
  • Skip to primary sidebar

Medical Market Report

  • Home
  • All Reports
  • About Us
  • Contact Us

Human-Driven Extinction Is Eliminating Entire Branches Of The Tree Of Life

September 20, 2023 by Deborah Bloomfield

The planet is currently undergoing its sixth mass extinction, but it’s not just individual species being wiped out. A new study has found that human activity is responsible for eliminating entire groups of species, in what researchers are calling a “mutilation of the tree of life”.

The Tasmanian tiger, Yangtze River dolphin, and passenger pigeon are some of the most recent species to become extinct – but they were also the last members of their genera, the taxonomic rank above species in biological classification. 

Advertisement

A human-made dent in our planet

Scientists from Stanford University and the National Autonomous University of Mexico have discovered that this is reflective of a much deeper crisis. Out of 5,400 genera of land-dwelling vertebrate animals examined (including 34,600 species), 73 have gone extinct since 1500 CE, and the current rate of genus extinction is 35 times greater than that of the last million years.

“In the long term, we’re putting a big dent in the evolution of life on the planet,” said Gerardo Ceballos, one of the study’s authors, in a statement.

The study also found that, without human influence, most likely only two genera would’ve been lost in the same amount of time. Instead, they argued that humans had caused a “biological annihilation” over the last 500 years.

Whilst this language might seem strong, the researchers believe, given the gravity of their findings, that it’s more than appropriate. 

Advertisement

“As scientists, we have to be careful not to be alarmist,” Ceballos explained, but said it would “be unethical not to explain the magnitude of the problem, since we and other scientists are alarmed.”

Taking an axe to the tree of life

Imagine, if you will, a single species as a twig on the tree of life. If that twig is cut off, nearby twigs (aka species in the same genus), can quickly grow to fill in the gaps – in other words, closely related species can help, at least partly, to take over lost species’ roles within an ecosystem.

However, when a whole branch (genus), is lopped off, it can be much more difficult for the ecosystem to recover; the paper explains that it can take millions of years for the process of evolution to generate a suitable replacement. In the meantime, there can be significant impacts on both an ecosystem’s stability and human life.

“This mass extinction is transforming the whole biosphere, possibly into a state in which it may be impossible for our current civilization to persist,” the authors wrote in their paper.

Advertisement

In the study, the researchers provide the example of the passenger pigeon; it once competed with the white-footed mouse, a carrier of the bacteria that cause Lyme disease, for food. After the extinction of the pigeons, the mouse population boomed, and with it, the incidence of Lyme disease in humans. 

They also argue that the mass elimination of entire genera could contribute to the climate crisis. 

“Climate disruption is accelerating extinction, and extinction is interacting with the climate, because the nature of the plants, animals, and microbes on the planet is one of the big determinants of what kind of climate we have,” explained Paul Ehrlich, the study’s other author.

Immediate action required

“Today there is a species [humans] that should know it is not able to wait millions of years for its life-support systems to be restored after a mass extinction,” states the study’s conclusion, calling to action political, economic, and social movements to prevent any further extinction.

Advertisement

It highlights a particularly immediate need for action in the tropics of the Americas, Asia, and Africa, with these areas experiencing the highest concentration of both genus extinctions and genera with only one remaining species.

The authors also think that tackling population growth and, consequently, an increase in consumption is an important factor in this. 

“The idea that you can continue those things and save biodiversity is insane,” Ehrlich. “It’s like sitting on a limb and sawing it off at the same time.”

And let’s be honest, that doesn’t sound very fun.

Advertisement

The study is published in the Proceedings of the National Academy of Sciences.

Deborah Bloomfield
Deborah Bloomfield

Related posts:

  1. Motor racing-Ricciardo earns drive in Earnhardt’s car, thinks of Senna
  2. EV maker Polestar strikes $20-billion deal with Gores Guggenheim SPAC
  3. IMF chief Georgieva’s lawyer claims data probe violated World Bank staff rules
  4. Three New Shipwrecks Found In The Mediterranean, Dating Back As Far As 100 BCE

Source Link: Human-Driven Extinction Is Eliminating Entire Branches Of The Tree Of Life

Filed Under: News

Primary Sidebar

  • 24-Million-Year-Old Protein Fragments Are Oldest Ever Recovered, A Robot Listened To Spoken Instructions And Performed Surgery, And Much More This Week
  • DNA From Greenland Sled Dogs – Maybe The World’s Oldest Breed – Reveals 1,000 Years Of Arctic History
  • Why Doesn’t Moonrise Shift By The Same Amount Each Night?
  • Moa De-Extinction, Fashionable Chimps, And Robot Surgery – No Human Required
  • “Human”: Powerful New Images Mark The Most Scientifically Accurate “Hyper-Real 3D Models Of Human Species Ever”
  • Did We Accidentally Leave Life On The Moon In 2019 – And Could We Revive It?
  • 1.8 Million Years Ago, Two Extinct Humans Had One Of The Gnarliest Deaths In History
  • “Powerful Image” Of One Of The World’s Rarest Tigers Exposes The Real Danger In Taman Negara
  • Evolution, Domestication, And A Lot Of Very Good Boys: How Wolves Became Dogs
  • Why Do Orcas Have White Spots Near Their Eyes?
  • Tomb Of First King Of Ancient Maya City Discovered In Belize
  • The Real Reason The Tip Of Your Tape Measure Wiggles Like That
  • The “Haunting” Last Message From NASA’s Opportunity Rover, Sent From Inside A Planet-Wide Storm
  • Adorable Video Proves Not All Gorillas Hate The Rain. It Might Even Win One A Mate
  • 5,000-Year-Old Rock Art May Show One Of Ancient Egypt’s First Rulers
  • Alzheimer’s-Linked Protein Levels “20 Times Higher” In Newborn Babies – What Does This Mean?
  • Americans Were Asked If They Thought Civil War Was Coming. The Results Were Unexpected
  • Voyager 1 & 2 Could Be Detected From Almost A Light-Year Away With Our Current Technology
  • Dams Have Nudged Earth’s Poles By Over 1 Meter In The Past 200 Years
  • This Sugar Could Be A Cure For Male Pattern Baldness – And It’s Been In Our Bodies All Along
  • Business
  • Health
  • News
  • Science
  • Technology
  • +1 718 874 1545
  • +91 78878 22626
  • [email protected]
Office Address
Prudour Pvt. Ltd. 420 Lexington Avenue Suite 300 New York City, NY 10170.

Powered by Prudour Network

Copyrights © 2025 · Medical Market Report. All Rights Reserved.

Go to mobile version