Title |
Evidence for isolated evolution of deep-sea ciliate communities through geological separation and environmental selection
|
---|---|
Published in |
BMC Microbiology, July 2013
|
DOI | 10.1186/1471-2180-13-150 |
Pubmed ID | |
Authors |
Alexandra Stock, Virginia Edgcomb, William Orsi, Sabine Filker, Hans-Werner Breiner, Michail M Yakimov, Thorsten Stoeck |
Abstract |
Deep hypersaline anoxic basins (DHABs) are isolated habitats at the bottom of the eastern Mediterranean Sea, which originate from the ancient dissolution of Messinian evaporites. The different basins have recruited their original biota from the same source, but their geological evolution eventually constituted sharp environmental barriers, restricting genetic exchange between the individual basins. Therefore, DHABs are unique model systems to assess the effect of geological events and environmental conditions on the evolution and diversification of protistan plankton. Here, we examine evidence for isolated evolution of unicellular eukaryote protistan plankton communities driven by geological separation and environmental selection. We specifically focused on ciliated protists as a major component of protistan DHAB plankton by pyrosequencing the hypervariable V4 fragment of the small subunit ribosomal RNA. Geospatial distributions and responses of marine ciliates to differential hydrochemistries suggest strong physical and chemical barriers to dispersal that influence the evolution of this plankton group. |
X Demographics
Geographical breakdown
Country | Count | As % |
---|---|---|
United Kingdom | 3 | 23% |
France | 2 | 15% |
United States | 2 | 15% |
Peru | 1 | 8% |
Spain | 1 | 8% |
Unknown | 4 | 31% |
Demographic breakdown
Type | Count | As % |
---|---|---|
Members of the public | 6 | 46% |
Scientists | 4 | 31% |
Science communicators (journalists, bloggers, editors) | 2 | 15% |
Practitioners (doctors, other healthcare professionals) | 1 | 8% |
Mendeley readers
Geographical breakdown
Country | Count | As % |
---|---|---|
United States | 3 | 5% |
Germany | 1 | 2% |
Brazil | 1 | 2% |
United Kingdom | 1 | 2% |
Sweden | 1 | 2% |
Spain | 1 | 2% |
Russia | 1 | 2% |
Unknown | 48 | 84% |
Demographic breakdown
Readers by professional status | Count | As % |
---|---|---|
Student > Ph. D. Student | 17 | 30% |
Student > Master | 8 | 14% |
Researcher | 8 | 14% |
Student > Bachelor | 4 | 7% |
Other | 4 | 7% |
Other | 10 | 18% |
Unknown | 6 | 11% |
Readers by discipline | Count | As % |
---|---|---|
Agricultural and Biological Sciences | 30 | 53% |
Environmental Science | 7 | 12% |
Biochemistry, Genetics and Molecular Biology | 4 | 7% |
Computer Science | 2 | 4% |
Earth and Planetary Sciences | 2 | 4% |
Other | 4 | 7% |
Unknown | 8 | 14% |