Read the Beforeitsnews.com story here. Advertise at Before It's News here.

By Alton Parrish (Reporter)
Contributor profile | More stories

Story Views
Now:
Last hour:
Last 24 hours:
Total:

The 'Great Dying': A Post Extinction Climate with 10-14 °C Warming and Lush Environments Collapsed

Thursday, May 20, 2021 3:33

% of readers think this story is Fact. Add your two cents.

The Paleozoic era culminated 251.9 million years ago in the most severe mass extinction recorded in the geologic record. Known as the “great dying,” this event saw the loss of up to 96% of all marine species and around 70% of terrestrial species, including plants and insects.

The consensus view of scientists is that volcanic activity at the end of the Permian period, associated with the Siberian Traps Large Igneous Province, emitted massive quantities of greenhouse gases into the atmosphere over a short time interval. This caused a spike in global temperatures and a cascade of other deleterious environmental effects.

An international team of researchers from the United States, Sweden, and Australia studied sedimentary deposits in eastern Australia, which span the extinction event and provide a record of changing conditions along a coastal margin that was located in the high latitudes of the southern hemisphere.

Outcrop photos are taken T.D. Frank and are from Frazer Beach, New South Wales, Australia.

Credit: GSA

Here, the extinction event is evident as the abrupt disappearance of Glossopteris forest-mire ecosystems that had flourished in the region for millions of years. Data collected from eight sites in New South Wales and Queensland, Australia were combined with the results of climate models to assess the nature and pace of climate change before, during, and after the extinction event.

The end Permian extinction and disappearance of Glossopteris flora occurs at the top of the coal (black layer).

Credit: GSA

Results show that Glossopteris forest-mire ecosystems thrived through the final stages of the Permian period, a time when the climate in the region was gradually warming and becoming increasingly seasonal. The collapse of these lush environments was abrupt, coinciding with a rapid spike in temperatures recorded throughout the region. The post-extinction climate was 10–14°C warmer, and landscapes were no longer persistently wet, but results point to overall higher but more seasonal precipitation consistent with an intensification of a monsoonal climate regime in the high southern latitudes.

Because many areas of the globe experienced abrupt aridification in the wake of the “great dying,” results suggest that high-southern latitudes may have served as important refugia for moisture-loving terrestrial groups.

Glossopteris leaves.

Photo by co-author Chris Mays.

The rate of present-day global warming rivals that experienced during the “great dying,” but its signature varies regionally, with some areas of the planet experiencing rapid change while other areas remain relatively unaffected. The future effects of climate change on ecosystems will likely be severe. Thus, understanding global patterns of environmental change at the end of the Paleozoic can provide important insights as we navigate rapid climate change today.

The article was published today in the Geological Society of America journal, Geology.
Pace, magnitude, and nature of terrestrial climate change through the End-Permian Extinction in southeastern Gondwana
T.D. Frank; C.R. Fielding; A.M.E. Winguth; K. Savatic; A. Tevyaw; C. Winguth; S. McLoughlin; V. Vajda; C. Mays; R. Nicoll; M. Bocking; J.L. Crowley
Corresponding author: Tracy Frank ([email protected]), University of Nebraska–Lincoln
URL: https://pubs.geoscienceworld.org/gsa/geology/article/doi/10.1130/G48795.1/598763/Pace-magnitude-and-nature-of-terrestrial-climate

Contacts and sources:
Kea Giles
Geological Society of America

Source: http://www.ineffableisland.com/2021/05/the-great-dying-post-extinction-climate.html

Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world.

Anyone can join.
Anyone can contribute.
Anyone can become informed about their world.

"United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.

Before It’s News® is a community of individuals who report on what’s going on around them, from all around the world. Anyone can join. Anyone can contribute. Anyone can become informed about their world. "United We Stand" Click Here To Create Your Personal Citizen Journalist Account Today, Be Sure To Invite Your Friends.

LION'S MANE PRODUCT

Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules

Mushrooms are having a moment. One fabulous fungus in particular, lion’s mane, may help improve memory, depression and anxiety symptoms. They are also an excellent source of nutrients that show promise as a therapy for dementia, and other neurodegenerative diseases. If you’re living with anxiety or depression, you may be curious about all the therapy options out there — including the natural ones.Our Lion’s Mane WHOLE MIND Nootropic Blend has been formulated to utilize the potency of Lion’s mane but also include the benefits of four other Highly Beneficial Mushrooms. Synergistically, they work together to Build your health through improving cognitive function and immunity regardless of your age. Our Nootropic not only improves your Cognitive Function and Activates your Immune System, but it benefits growth of Essential Gut Flora, further enhancing your Vitality.

Our Formula includes: Lion’s Mane Mushrooms which Increase Brain Power through nerve growth, lessen anxiety, reduce depression, and improve concentration. Its an excellent adaptogen, promotes sleep and improves immunity. Shiitake Mushrooms which Fight cancer cells and infectious disease, boost the immune system, promotes brain function, and serves as a source of B vitamins. Maitake Mushrooms which regulate blood sugar levels of diabetics, reduce hypertension and boosts the immune system. Reishi Mushrooms which Fight inflammation, liver disease, fatigue, tumor growth and cancer. They Improve skin disorders and soothes digestive problems, stomach ulcers and leaky gut syndrome. Chaga Mushrooms which have anti-aging effects, boost immune function, improve stamina and athletic performance, even act as a natural aphrodisiac, fighting diabetes and improving liver function. Try Our Lion’s Mane WHOLE MIND Nootropic Blend 60 Capsules Today. Be 100% Satisfied or Receive a Full Money Back Guarantee. Order Yours Today by Following This Link.

Comments

Total 1 comment

S8-10

A few degrees warming would probably do the earth some good. Obviously if you chart a trending pattern out into infinity eventually it gets too hot. But that is alarmist at best and pointless at worst

May 20, 2021, 8:58 am 0 Reply

Online:
Visits:	1,689,116,805
Stories:	8,395,156