UPDATED:  24 June 2008

make your own

Homemade ecosphere


An Ecosphere, or Biosphere, is the name given to a self-contained ecosystem.  They are closed biological systems which use outside energy (typically in the form of sunlight) to power life processes within it's sealed environment.  All Ecospheres share several qualities.  They are permanently sealed - no gases, liquids, or solids pass in or out of a running Ecosphere.  They contain a diversity of life forms - plants, bacteria, and animals of all sorts comprise an Ecosphere's population.  They are complete ecosystems - an established Ecosphere forms a complete life-web.  You can nurture and study one indefinitely - stable Ecospheres can be easily made, or purchased, and enjoyed for many years.


 

Making your own Ecosphere

 

 

The Science Behind Ecospheres

 

 

 The Ecosphere Yahoo Group

 

 

See tentative plans for EcoSphere Beta

 

 

Build your own live "Biocam"

 

EcoSphere Alpha after one half year

EcoSphere Alpha after 1.5 years

EcoSphere Alpha was sealed on the same day it was assembled in this two-gallon pickle jar.  Started in August of 2005, the culture contained water, mud and rocks from the Racquette River in Potsdam, New York.  I didn't think to keep a log or photo gallery of this project.  The picture at left is from November 2005 and the one on the right is from January 2007.  The entries, below, are a more-or-less accurate account of the evolution of EcoSphere Alpha as I can remember it after 1.5 years.
 
August 2005

It was a hot day and this project seemed like the perfect excuse for going over to Lehman Park to take a dip.  After filling my wife's pickle jar (still a sore subject) to within a couple of inches of the top, I simply reached down and grabbed several hand-fulls of the mixed sediment at my feet as well a small plant sprig. That evening, the water was too murky to make out any signs of life.

September 2005 For almost a month now, I have been enjoying a varied array of fauna from the barely visible to the gigantic (by the standards of EcoSphere Alpha)  I've noted daphnia, various crustaceans, two types of aquatic insects, and animated dots too small to discern.  The leafy plant I included is doing well in the indoor morning sun and desk lamp I've provided.  Not much algae bloom yet.
November 2005 A couple of snails!  They have grown large enough now to be seen, I suppose.  Algae developed quite a bit in filaments along the sides and bottom (and on the snails!)  Also Hydra have started showing up on the jar sides.  The leafy plant has shown little progress.  The couple of days I put the jar outside this fall really contributed to the algal bloom, I think.
May 2006 Recently small snails appeared.  Perhaps 10 of them.
August 2006 The last large snail has died.  I no longer see hydra, and have not for some time.  There are still a couple of the 2-3mm long white swimming insects. 
January 2007 I have just now re-examined the culture after 5 months of neglect in indirect light.  Algae has died back somewhat, and the leafy plant is still hanging on.  Snails, crustaceans, daphnia, and other small bits of fauna can be seen and a surprise: worms in the mulm.  I had expected to find worms in the sediment almost from day one and had not seen any to my bewilderment.  Today I saw a small brown filament swaying between the rocks!  I will begin paying better heed to the culture's illumination needs.
January 2008 2.5 Years old and counting!  Stability has been the hallmark of the last year.  The visible populations of millimeter long white worms on the glass, daphnia, assorted crustaceans, and snails have made a lasting truce it would seem.  The snail population now numbers about 10-20 individuals.  One is larger than a BB while all the rest are smaller than a quarter grain of rice.  Perhaps the greatest limit to their population is the amount of usable calcium for shell material?
June 2008 Check out some of the citizenry of Alpha on my Biocam page.  The culture has lived outdoors ever since danger of a hard freeze was past in a partially sunny location.  Things are pretty much unchanged over the last year with the exception of rigid, white, thread-like, growths about 1mm long above the water on the sides of the jar.  I'm not quite sure what they are at this point but will post some good quality pics soon so visitors can respond with their thoughts.  Ecosphere Beta is finally on my short list of projects!  Perhaps by August I'll get to it!

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