The Sourdough Habitat and its Monuments - 2017

The Habitat

A habitat is an ecological or environmental area that is inhabited by a particular species of animal, plant, or other type of organism. The term typically refers to the zone in which the organism lives and where it can find food, shelter, protection and mates for reproduction. It is the natural environment in which an organism lives, or the physical environment that surrounds a species population.


Sourdough bread starter. Sourdough is teeming with bugs—some 50 million yeasts and 5 billion lactobacilli bacteria in every teaspoon of starter dough. (

"If the loaf is the body, the starter is the soul".

(Discovering The Science Secrets Of Sourdough)

Sourdough breads I have baked

Poetics of Anthropocene - Sourdough bread

"There are millions of kinds of bacteria and fungi on Earth. We have found several thousand species in human belly buttons alone. Yet if you mix flour and water, the community of organisms that colonize the resulting concoction is almost always composed of a small handful of organisms that are able to leaven bread, yielding a sourdough starter. How this happens is one of civilizations great mysteries, a mystery at the heart of the bread making..." Rob Dunn Lab (

This is my sourdoug starter which I call April at 200 microscopic magnification

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This is Surdoug project map wchich shows all the surdough starters send from different parts of the World. To the right April from Telemark in Norway, sent to USA in January 2017. 

Saccharomyces cerevisiae (yeast) - electron micrograph, Wikipedia


DAN-lab succeeded in identifying the microbes in my sourdough.

It looks like mine sourdough is very poor in species.

Metaphorically, I could say it is very homogen and "clean" colony.

When I study other samples on the map, I can see some have very rich diversity in population.

Map of Sourdough WORLD