FacebookTwitterGoogle+RedditEmail

Is Climate Change Driving the Demise of the Koala?

Photo by Marc Dalmulder | CC BY 2.0

The koala is an engaging, docile, cuddly and lovable animal.  It is also, tragically, undergoing a decline in numbers.  To the extent climate change and a degraded environment are responsible, we can be blamed for not heeding the repeated warnings of scientists and others.

Warnings to humanity are much in the news again as the latest, signed by over 15,000 scientists from 184 countries, appeared in the journal Bioscience not long ago on November 13.  But before, much before, there was an earlier one, now a quarter century past.

The late Henry Kendall was the winner of a Nobel Prize in physics, a founding member of the Union of Concerned Scientists, and the chairman of its governing board.  He spearheaded the effort leading to the 1992 warning signed by 1700 eminent scientists, including then a majority of science Nobel Laureates.  It appealed for the help of the world’s peoples, its scientists, religious, industrial and business leaders.

Earlier still, there was Rachel Carson’s 1962 canary in the coal mine, The Silent Spring, famous for its attack on pesticides like DDT.

While these warnings caution us on the degradation of our planet, there is one area that might be implied but is not specifically mentioned:  the negative impact on the quality of our food.  Noted first by Irakli Loladze, the relatively new discovery was hypothesized in 2002.

In the parts of the world relying on a plant-based diet, people cannot easily compensate for the loss of nutrients.  The proven decline of protein, iron and zinc in grains, potatoes and vegetables will inevitably lead to stunted growth, anemia and more disease.

This distressing and unhappy prospect is not confined to humans.  Bees rely on the goldenrod plant.  It flowers late, and the protein in its pollen is vitally important for them to build themselves up to weather the winter.  Unfortunately, as scientists have learned, the protein content in goldenrod has suffered a drastic loss of about a third as atmospheric CO2 levels have increased.  There may be other causes like pesticides and parasitic mites but lack of nutrition has to be a major candidate.

On the other side of the world lives the harmless Koala bear.  A marsupial, it is truly unique for feeding only on eucalyptus leaves.  Most unusually the female has three vaginas, the outer two leading each to a separate uterus while the center passage is for delivery of its young.  To complement this anatomy, the male is endowed with a double-pronged penis.

Many causes are attributed to the serious drop in koala bear numbers, including habitat destruction, road kills, bush fires and loss of genetic fitness due to inbreeding, but also chlamydia.  This STD has found a fertile field in its complicated genetic apparatus, aided possibly by weakened immunity.  In some places infection rates are as high as 90 percent.  Sadly, the little joeys pick it up suckling in their pouch.  Moreover, the infection can also leave mothers infertile.

Now a new threat has been identified leaving them on the brink.  The koalas source of all nourishment, the eucalyptus tree, has been affected by increasing CO2 levels.  The koalas rely on the mildly toxic leaves for food and water and up to now have been able to tolerate the toxicity — they sleep up to 20 hours to work it out.  But the rise in CO2 has decreased nutrition content leaving them more poisonous.  Feeding on these, the koalas are ingesting ever more poison.  Worse, the Australian drought, blamed on global warming for its intensity, has left the leaves with reduced moisture content.  The stresses have left the koalas dying from kidney failure.

How long before they are added to the ever-increasing endangered list?  Unless the world really sits up and takes notice, we will be soon adding our pollinator bee friends and, eventually, ourselves to that list.  It is what we have in common.

More articles by:

Arshad M. Khan is a former professor who has, over many years, written occasionally for the print and often for online media outlets.

Weekend Edition
April 20, 2018
Friday - Sunday
Paul Street
Ruling Class Operatives Say the Darndest Things: On Devils Known and Not
Conn Hallinan
The Great Game Comes to Syria
Jeffrey St. Clair
Roaming Charges: Mother of War
Andrew Levine
“How Come?” Questions
Doug Noble
A Tale of Two Atrocities: Douma and Gaza
Kenneth Surin
The Blight of Ukania
Howard Lisnoff
How James Comey Became the Strange New Hero of the Liberals
William Blum
Anti-Empire Report: Unseen Persons
Lawrence Davidson
Missiles Over Damascus
Patrick Cockburn
The Plight of the Yazidi of Afrin
Pete Dolack
Fooled again? Trump Trade Policy Elevates Corporate Power
Stan Cox
For Climate Mobilization, Look to 1960s Vietnam Before Turning to 1940s America
William Hawes
Global Weirding
Dan Glazebrook
World War is Still in the Cards
Nick Pemberton
In Defense of Cardi B: Beyond Bourgeois PC Culture
Ishmael Reed
Hollywood’s Last Days?
Peter Certo
There Was Nothing Humanitarian About Our Strikes on Syria
Dean Baker
China’s “Currency Devaluation Game”
Ann Garrison
Why Don’t We All Vote to Commit International Crimes?
LEJ Rachell
The Baddest Black Power Artist You Never Heard Of
Lawrence Ware
All Hell Broke Out in Oklahoma
Franklin Lamb
Tehran’s Syria: Lebanon Colonization Project is Collapsing
Donny Swanson
Janus v. AFSCME: What’s It All About?
Will Podmore
Brexit and the Windrush Britons
Brian Saady
Boehner’s Marijuana Lobbying is Symptomatic of Special-Interest Problem
Julian Vigo
Google’s Delisting and Censorship of Information
Patrick Walker
Political Dynamite: Poor People’s Campaign and the Movement for a People’s Party
Fred Gardner
Medical Board to MDs: Emphasize Dangers of Marijuana
Rob Seimetz
We Must Stand In Solidarity With Eric Reid
Missy Comley Beattie
Remembering Barbara Bush
Wim Laven
Teaching Peace in a Time of Hate
Thomas Knapp
Freedom is Winning in the Encryption Arms Race
Mir Alikhan
There Won’t be Peace in Afghanistan Until There’s Peace in Kashmir
Robert Koehler
Playing War in Syria
Tamara Pearson
US Shootings: Gun Industry Killing More People Overseas
John Feffer
Trump’s Trade War is About Trump Not China
Morris Pearl
Why the Census Shouldn’t Ask About Citizenship
Ralph Nader
Bill Curry on the Move against Public Corruption
Josh Hoxie
Five Tax Myths Debunked
Leslie Mullin
Democratic Space in Adverse Times: Milestone at Haiti’s University of the Aristide Foundation
Louis Proyect
Syria and Neo-McCarthyism
Dean Baker
Finance 202 Meets Economics 101
Abel Cohen
Forget Gun Control, Try Bullet Control
Robert Fantina
“Damascus Time:” An Iranian Movie
David Yearsley
Bach and Taxes
FacebookTwitterGoogle+RedditEmail