<p>I don't think there is necessarily a problem with it being dry or cold. An excellent similacrum of the Martian surface conditions is found in Antarctica. There are plenty of <em>anaerobic</em> microbes that exist here. A brief search reveals
<a href="https://www.google.co.uk/url?sa=t&amp;rct=j&amp;q=&amp;esrc=s&amp;source=web&amp;cd=2&amp;cad=rja&amp;uact=8&amp;ved=0ahUKEwj_8q_Mg9TJAhUEdA8KHXGcAMkQFggjMAE&amp;url=http%3A%2F%2Flink.springer.com%2Fcontent%2Fpdf%2F10.1007%2FBF02703452.pdf&amp;usg=AFQjCNEKgzxFX_a8I5SKFEzG-28pWXhsAw&amp;sig2=J3pD4naDJOoWxsfgRMSMnA" rel="nofollow">Shivaji (1988)</a>; <a href="http://journals.cambridge.org/action/displayFulltext?type=1&amp;fid=222320&amp;jid=ANS&amp;volumeId=4&amp;issueId=02&amp;aid=222319" rel="nofollow">Franzmann &amp; Rhode (1992)</a>; <a href="http://www.ncbi.nlm.nih.gov/pubmed/11118605" rel="nofollow">Dube et al. (2001)</a>.</p>

<p>To quote the wikipedia entry on the <a href="https://en.wikipedia.org/wiki/McMurdo_Dry_Valleys#Life" rel="nofollow">"McMurdo dry valleys"</a> - "<em>Endolithic photosynthetic bacteria have been found living in the Dry Valleys, sheltered from the dry air in the relatively moist interior of rocks. Summer meltwater from the glaciers provides the primary source of soil nutrients. Scientists consider the Dry Valleys perhaps the closest of any terrestrial environment to the planet Mars, and thus an important source of insights into possible extraterrestrial life.</em>" I think that's quite direct.</p>

CC BY-SA 3.0
2015-12-11T14:44:03.933Z
2015-12-11T14:44:03.933Z
ProfRob
<p>Mars has pools of water that can create into organisms, but not survive without sunlight and water for the both. But water lives in layers of rocks too. And what about different forms of evolution like why do we need to be considering this one type of organism? Because its water? Him more thinking. Perhaps there a certain line up of organisms that can evolve on Mars perfectly and be put there by us. Maybe. Just a basic answer.</p>

CC BY-SA 4.0
2021-08-30T06:52:53.393Z
Hi, welcome to Astronomy SE! You have answered an old question that already has an accepted answer and so is considered somewhat already "resolved". You can find here plenty of unanswered question instead, take a look if there is something you want to answer https://astronomy.stackexchange.com/questions?sort=unanswered
Prallax
CC BY-SA 4.0
2021-08-30T13:33:20.197Z
Please add further details to expand on your answer, such as working code or documentation citations.
Community
CC BY-SA 4.0
2021-08-30T01:37:41.100Z
2021-08-30T01:37:41.100Z
Amanda Armstrong
<p>On the surface of Mars probably none, since it's too dry or too cold, or both, to stay active.</p>

<p>Spores or other <a href="https://en.wikipedia.org/wiki/Dormancy">dormant</a> forms probably could survive for centuries, until radiation will gradually destroy the organic molecules necessary to get back into an active state.</p>

<p>But there are "<a href="http://mepag.jpl.nasa.gov/reports/Rummel_et_al_Astrobiology_14-SR-SAG2.pdf">Mars Special Regions</a>", where either Earth microbes or potential Martian microbes - if some exist - cannot be ruled out to be able to spread.</p>

<p>Things might look quite different in the underground, especially in warm and wet zones, which may exist by geothermal heat and ground water.
There, at least <a href="https://en.wikipedia.org/wiki/Lithotroph">lithotrophic bacteria</a>/"chemolithoautotrophs" could survive and spread.
Those could then form a basis for a <a href="https://en.wikipedia.org/wiki/Food_chain">food chain</a> of other organisms.</p>

<p>Plants dependent on sunlight, or animals dependent on oxygen would hardly survive.</p>

<p>For a list of species, see table 2 on page 895 of the <a href="http://mepag.jpl.nasa.gov/reports/Rummel_et_al_Astrobiology_14-SR-SAG2.pdf">above reference paper</a>. The following species and <a href="https://en.wikipedia.org/wiki/Genus">genera</a> are mentioned in <a href="http://mepag.nasa.gov/reports/sr-sag/SR-SAG2%20Report_Tables_v18.pdf">the table</a>:
<a href="https://microbewiki.kenyon.edu/index.php/Psychromonas_ingrahamii">Psychromonas ingrahamii</a>, <a href="http://www.ncbi.nlm.nih.gov/pubmed/23389107">Planococcus halocryophilus strain Or1</a>, Paenisporoarcina sp. and <a href="http://www.bacterio.net/chryseobacterium.html">Chryseobacterium</a>, Rhodotorula glutinis (yeast), <a href="https://microbewiki.kenyon.edu/index.php/Colwellia_psychrerythraea">Colwellia psychroerythraea</a>, <a href="http://www.nrcresearchpress.com/doi/abs/10.1139/m88-198#.VmrWRtLhCt8">Nitrosomonas cryotolerans</a>, (lichen) <a href="http://bomax.botany.pl/pubs/data/article_pdf?id=2331">Pleopsidium chlorophanum</a>.</p>

CC BY-SA 3.0
2015-12-11T14:02:22.983Z
2015-12-11T14:02:22.983Z
Gerald
<p>Contaminating other planets is <a href="http://planetaryprotection.nasa.gov/overview" rel="nofollow noreferrer">a concern in space exploration.</a> My question is what organisms, or small collections of organisms, from earth would be able form a self-sustaining population on Mars? I'm not worried about how they might get there, so deep sea microbes and the like which would have to be purposely transported are in scope.</p>
<p>This is not the same as the earlier question <a href="https://astronomy.stackexchange.com/q/1068/7982">Could any known, living organisms on Earth survive on Mars?</a> as that one does not consider sustainability.</p>

CC BY-SA 3.0
2016-08-03T12:38:49.710Z
Tardigrades would certainly make it, at least for a while...
honeste_vivere
<mars><life><astrobiology>
What earth organisms might survive if they arrived on Mars?
bhh
# What earth organisms might survive if they arrived on Mars?

(Asked by: username_0 on 2015-12-11)

Contaminating other planets is [a concern in space exploration.](http://planetaryprotection.nasa.gov/overview) My question is what organisms, or small collections of organisms, from earth would be able form a self-sustaining population on Mars? I'm not worried about how they might get there, so deep sea microbes and the like which would have to be purposely transported are in scope.

This is not the same as the earlier question [Could any known, living organisms on Earth survive on Mars?](https://astronomy.stackexchange.com/q/1068/7982) as that one does not consider sustainability.

**Tags:** mars, life, astrobiology
> **Comments:**
> **username_1**: Tardigrades would certainly make it, at least for a while...  

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## 3 answers

### Answer by username_6 on 2015-12-11. Score: 10 | Accepted answer

On the surface of Mars probably none, since it's too dry or too cold, or both, to stay active.

Spores or other [dormant](https://en.wikipedia.org/wiki/Dormancy) forms probably could survive for centuries, until radiation will gradually destroy the organic molecules necessary to get back into an active state.

But there are "[Mars Special Regions](http://mepag.jpl.nasa.gov/reports/Rummel_et_al_Astrobiology_14-SR-SAG2.pdf)", where either Earth microbes or potential Martian microbes - if some exist - cannot be ruled out to be able to spread.

Things might look quite different in the underground, especially in warm and wet zones, which may exist by geothermal heat and ground water.
There, at least [lithotrophic bacteria](https://en.wikipedia.org/wiki/Lithotroph)/"chemolithoautotrophs" could survive and spread.
Those could then form a basis for a [food chain](https://en.wikipedia.org/wiki/Food_chain) of other organisms.

Plants dependent on sunlight, or animals dependent on oxygen would hardly survive.

For a list of species, see table 2 on page 895 of the [above reference paper](http://mepag.jpl.nasa.gov/reports/Rummel_et_al_Astrobiology_14-SR-SAG2.pdf). The following species and [genera](https://en.wikipedia.org/wiki/Genus) are mentioned in [the table](http://mepag.nasa.gov/reports/sr-sag/SR-SAG2%20Report_Tables_v18.pdf):
[Psychromonas ingrahamii](https://microbewiki.kenyon.edu/index.php/Psychromonas_ingrahamii), [Planococcus halocryophilus strain Or1](http://www.ncbi.nlm.nih.gov/pubmed/23389107), Paenisporoarcina sp. and [Chryseobacterium](http://www.bacterio.net/chryseobacterium.html), Rhodotorula glutinis (yeast), [Colwellia psychroerythraea](https://microbewiki.kenyon.edu/index.php/Colwellia_psychrerythraea), [Nitrosomonas cryotolerans](http://www.nrcresearchpress.com/doi/abs/10.1139/m88-198#.VmrWRtLhCt8), (lichen) [Pleopsidium chlorophanum](http://bomax.botany.pl/pubs/data/article_pdf?id=2331).


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### Answer by username_2 on 2015-12-11. Score: 3

I don't think there is necessarily a problem with it being dry or cold. An excellent similacrum of the Martian surface conditions is found in Antarctica. There are plenty of *anaerobic* microbes that exist here. A brief search reveals
[Shivaji (1988)](https://www.google.co.uk/url?sa=t&rct=j&q=&esrc=s&source=web&cd=2&cad=rja&uact=8&ved=0ahUKEwj_8q_Mg9TJAhUEdA8KHXGcAMkQFggjMAE&url=http%3A%2F%2Flink.springer.com%2Fcontent%2Fpdf%2F10.1007%2FBF02703452.pdf&usg=AFQjCNEKgzxFX_a8I5SKFEzG-28pWXhsAw&sig2=J3pD4naDJOoWxsfgRMSMnA); [Franzmann & Rhode (1992)](http://journals.cambridge.org/action/displayFulltext?type=1&fid=222320&jid=ANS&volumeId=4&issueId=02&aid=222319); [Dube et al. (2001)](http://www.ncbi.nlm.nih.gov/pubmed/11118605).

To quote the wikipedia entry on the ["McMurdo dry valleys"](https://en.wikipedia.org/wiki/McMurdo_Dry_Valleys#Life) - "*Endolithic photosynthetic bacteria have been found living in the Dry Valleys, sheltered from the dry air in the relatively moist interior of rocks. Summer meltwater from the glaciers provides the primary source of soil nutrients. Scientists consider the Dry Valleys perhaps the closest of any terrestrial environment to the planet Mars, and thus an important source of insights into possible extraterrestrial life.*" I think that's quite direct.


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### Answer by username_3 on 2021-08-30. Score: 0

Mars has pools of water that can create into organisms, but not survive without sunlight and water for the both. But water lives in layers of rocks too. And what about different forms of evolution like why do we need to be considering this one type of organism? Because its water? Him more thinking. Perhaps there a certain line up of organisms that can evolve on Mars perfectly and be put there by us. Maybe. Just a basic answer.

> **Comments:**
> **username_4**: Hi, welcome to Astronomy SE! You have answered an old question that already has an accepted answer and so is considered somewhat already "resolved". You can find here plenty of unanswered question instead, take a look if there is something you want to answer https://astronomy.stackexchange.com/questions?sort=unanswered  
> **username_5**: Please add further details to expand on your answer, such as working code or documentation citations.  

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