Pasting stuff I've just come to learn:
"Deep-sea sediments contain large reservoirs of carbon in the form of
microbial biomass, and the dynamics of this ecosystem are only now being
established. A paper in last week's Nature showed that Archaea
predominate over Bacteria in an extensive sediment prokaryote community.
This week Danovaro et al. report on the impact of viral infections in
this ecosystem. Data from 232 sediment samples show that virus
production is very high. Viral infections cause the abatement of over
80% of prokaryotic biomass production — close to 100% at depths below
1,000 metres - thereby releasing huge amounts of dissolved organic
carbon into the deep seas. In waters otherwise short of resources this
injection of nutrients is particularly significant. Viruses therefore
appear to play a major role in global biogeochemical cycles, deep-sea
metabolism and overall functioning of the largest ecosystem of our
biosphere. The cover graphic illustrates the battle between deep-sea
viruses and bacteria, where bacteria destroyed by viruses provide food
for other bacteria. [Article p. 1084; News 1038] Cover art: Mirco
Tangherlini/ www.tangherlini.it"
http://www.nature.com/nature/journal/v454/n7208/covers/
:) :) :)
Fernando.
Moose wrote:
>
>> <clip stuff I can't help with>
>>
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