Saturday, July 2, 2016
Contact us    |    Advertise    |   Help   RSS icon Twitter icon Facebook icon
    Home  ·  News  ·  Forum  ·  Stories  ·  Image Gallery  ·  Columns  ·  Encyclopedia  ·  Videos
Find: in

Mystery 'mima' mounds created by plants ?


Posted on Thursday, 26 June, 2014 | Comment icon 8 comments

Mima mounds in Washington State. Image Credit: CC BY-SA 3.0 Jerrye and Roy Klotz
Scientists believe that plants, not animals, are responsible for the strange vegetation-topped mounds.
Found across the American prairies and in other countries all over the world, these unexplained topographical anomalies have been the subject of scientific debate and study for years.

Several explanations have been proposed including the idea that animals such as gophers may be responsible for creating them, but now a new study has suggested that the real culprit isn't animals at all but plants - or the spatial patterning of plants to be precise.

"My sense of the literature is that people look at the mounds and think they're faunally generated by default," said study co-author Michael Cramer. "We're suggesting that people should have a more balanced view and entertain the possibility that vegetation could be behind mound formation."

Plants are not believed to generate the mounds directly but instead have a cumulative effect on the surrounding soil erosion through their growth and absorption of nutrients.

"If you have a patchwork of vegetation islands, they protect the soil from erosion, while the inter-patch soil gets eroded away," said Cramer. "This results in a deflation of the surface, which leaves behind the mounds."

Source: Live Science | Comments (8)

Tags: Mima Mounds


 
Recent comments on this story
Comment icon #1 Posted by Sundew on 26 June, 2014, 12:57
It is probably a combination of erosion of the surrounding area and accretion of debris with in the mound, with the plants acting as a wind trap for sand, leaves, etc. The breakdown of organic material within the mound would act as a natural fertilizer creating over time taller plants and making the wind trap more efficient, especially towards the center of the mound. I would expect that in areas with a strong prevailing wind direction, the mounds would be elongated rather than circular.
Comment icon #2 Posted by Purplos on 26 June, 2014, 14:00
Makes sense to me. I'm sure it would be easy to tell if it was gophers... just dig one up. I have to say that I first read the thread title as, "Mystery 'mima' sounds created by plants" and was very interested to hear a recording of plants going, "Mimmma.. mimmmaaa...."
Comment icon #3 Posted by hammerclaw on 26 June, 2014, 15:42
Calls to mind how native americans farmed. They planted corn on fields of mounds and beans and squash on the ground between as additional crops and a way to retain moisture in the soil and control weeds. Native American agriculture was gardening on a grand scale.
Comment icon #4 Posted by MyOtherAccount on 26 June, 2014, 21:25
Strange... While growing up in Northwest Arkansas I was told that instead of trenching around a tee-pee mounds were built on which to construct a tee-pee. (Would make for a awkward sleeping position being on top of a small, round hill.) However, when I was a young adult--I believe it was the Forest Service guide who told us--I was told it was a result of erosion as in natural cycles of periods like the "Dust Bowl" days. The solution to keeping your top soil after that was each state's Agriculture Dept. and groups like Arbor Day supplying people, primarily farmers, with free trees to plant alon... [More]
Comment icon #5 Posted by hammerclaw on 27 June, 2014, 1:44
Native Americans didn't use plows to rip the earth open. They planted the three sisters in the east (corn, beans, squash) on mounds not unlike those in the picture, with sticks using fish heads for fertiliser. European style farming on the plains destroyed the root system of the native grasses, and when drought came there was nothing to hold the topsoil in place.
Comment icon #6 Posted by Paranomaly on 27 June, 2014, 3:31
Can this phenomenon be linked to fairy circles?
Comment icon #7 Posted by Silent Trinity on 30 June, 2014, 17:17
Well, sounds like a logical explanation, a well thought out one too it seems!
Comment icon #8 Posted by Rei4ever on 4 August, 2014, 14:56
Nature always finds a way!!!!


Please Login or Register to post a comment.


  On the forums
Forum posts:
Forum topics:
Members:

5710375
259277
161009

 
Man creates a monster 200W 'laser bazooka'
7-1-2016
A madcap laser junkie has created a device that is 33 million times brighter than the surface of the sun.
Hole in the ozone layer is starting to heal
7-1-2016
A large hole in the Earth's protective ozone layer is finally starting to show signs of healing up.
Man swims in 1,500-gallon pool of Coca-Cola
6-30-2016
The remarkable stunt saw a man jump in to a pool filled with several thousand bottles of fizzy drink.
Disclosure advocate releases NORAD UFO files
6-30-2016
Victor Viggiani released the documents to the public during the Alien Cosmic Expo event on Saturday.
Featured Videos
Gallery icon 
Can supercomputers predict the future ?
Posted 7-1-2016 | 1 comment
What can you actually do with one hundred million billion calculations per second ?
 
Tim Peake back on Earth
Posted 6-29-2016 | 1 comment
An interview with astronaut Tim Peake about his time aboard the space station.
 
How MythBusters saved a woman's life
Posted 6-27-2016 | 3 comments
A woman whose car careened in to a lake was saved by an episode of MythBusters.
 
 View: More videos
Stories & Experiences
Three knocks in the night
6-28-2016 | Cedar City, Utah
 
Mr Button and laurel leaves
6-28-2016 | Unknown
 
Knocking on the door
6-28-2016 | Virginia, United States
 
Not in our jurisdiction
5-2-2016 | California, United States
 
Zippers and headlights
5-2-2016 | Raleigh, United States
 
Spinning, voiceless and breathless
5-2-2016 | Garland, Texas
 
Paralyzed
4-15-2016 | United States
 
The mysterious awakening
4-6-2016 | Los Angeles, California
 
Chocolate fairy? Really?
4-6-2016 | United Kingdom
 
Christmas Day haunting
4-6-2016 | London, UK
 

         More stories | Send us your story
 
Top   |  Home   |   Forum   |   News   |   Image Gallery   |  Columns   |   Encyclopedia   |   Videos   |   Polls
UM-X 10.7 Unexplained-Mysteries.com 2001-2015
Privacy Policy and Disclaimer   |   Cookies   |   Advertise   |   Contact   |   Help/FAQ