tag:blogger.com,1999:blog-8441491750914005356.post6089439482351069048..comments2023-06-16T12:27:49.821+01:00Comments on Microbes Rule the Waves - 2013: Biofilms between two distinct cold seep nichesUnknownnoreply@blogger.comBlogger2125tag:blogger.com,1999:blog-8441491750914005356.post-84006345842964150312014-04-04T19:51:45.030+01:002014-04-04T19:51:45.030+01:00The main reason that seep water biofilms consisted...The main reason that seep water biofilms consisted of a specific community composition seems to be because sulfate reducers benefit especially from being in a biofilm (due to survival and sulfate uptake increases). This probably allowed Desulfobacula to dominate these biofilms, reducing diversity. Biofilms also do probably concentrate sulfate, creating more extreme conditions than in the water column.<br />This study focused on biofilms, so it kind of ignored the planktonic communities. This particular seep system seems to be sulfur driven, but this is not representative, given the variability of deep sea niches. There are other seep studies which revolve around sulfide symbioses and methane.Anonymoushttps://www.blogger.com/profile/14950879543695501526noreply@blogger.comtag:blogger.com,1999:blog-8441491750914005356.post-53728732654403532902014-04-03T21:19:27.951+01:002014-04-03T21:19:27.951+01:00You mentioned that substrate in the seep water cou...You mentioned that substrate in the seep water could have a selective effect on the community within the biofilm and that this was less diverse than the planktonic communities...could this be because the biofilm bacteria tend to be more tolerant/ adapted to the conditions that other microorganisms may find hostile at cold seeps? As the free-living bacteria are not necessarily exposed to the same intensity/ frequency of these conditions (such as high sulfate levels) so more are able to cope with their environment (in the water column). <br /><br />Also, does it mention in the study whether these planktonic and/ or bacteria are involved in any other biogeochemical processes other than the sulfur cycle, and are there similar or different predominant types, as was found in the biofilms in the brine pool and seep water? Anonymoushttps://www.blogger.com/profile/01828256514411326878noreply@blogger.com