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Stephanos P. Kilias
National and Kapodistrian University of Athens
26Publications
9H-index
232Citations
Publications 26
Newest
2018 in Biogeochemistry [IF: 3.27]
Ernest Chi Fru3
Estimated H-index: 3
(Cardiff University),
Nolwenn Callac3
Estimated H-index: 3
(Stockholm University),
Nicole R. Posth10
Estimated H-index: 10
... more
The toxicity of arsenic (As) towards life on Earth is apparent in the dense distribution of genes associated with As detoxification across the tree of life. The ability to defend against As is particularly vital for survival in As-rich shallow submarine hydrothermal ecosystems along the Hellenic Volcanic Arc (HVA), where life is exposed to hydrothermal fluids containing up to 3000 times more As than present in seawater. We propose that the removal of dissolved As and phosphorus (P) by sulfide an...
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2017 in Scientific Reports [IF: 4.12]
Nolwenn Callac3
Estimated H-index: 3
(Stockholm University),
Nicole R. Posth10
Estimated H-index: 10
(University of Copenhagen),
Jayne E. Rattray2
Estimated H-index: 2
(Stockholm University)
... more
The seafloor sediments of Spathi Bay, Milos Island, Greece, are part of the largest arsenic-CO2-rich shallow submarine hydrothermal ecosystem on Earth. Here, white and brown deposits cap chemically distinct sediments with varying hydrothermal influence. All sediments contain abundant genes for autotrophic carbon fixation used in the Calvin-Benson-Bassham (CBB) and reverse tricaboxylic acid (rTCA) cycles. Both forms of RuBisCO, together with ATP citrate lyase genes in the rTCA cycle, increase wit...
2 Citations Download PDF Cite
2017 in Solid Earth [IF: 4.17]
Ernest Chi Fru3
Estimated H-index: 3
(Cardiff University),
Stephanos P. Kilias9
Estimated H-index: 9
(National and Kapodistrian University of Athens),
Magnus Ivarsson6
Estimated H-index: 6
(University of Southern Denmark)
... more
An early Quaternary shallow submarine hydrothermal iron formation (IF) in the Cape Vani sedimentary basin (CVSB) on Milos Island, Greece, displays banded rhythmicity similar to Precambrian banded iron formation (BIF). Field-wide stratigraphic and biogeochemical reconstructions show two temporal and spatially isolated iron deposits in the CVSB with distinct sedimentological character. Petrographic screening suggests the presence of a photoferrotrophic-like microfossil-rich IF (MFIF), accumulated ...
1 Citations Download PDF Cite
2016 in Scientific Reports [IF: 4.12]
Ernest Chi Fru3
Estimated H-index: 3
,
Emma Arvestål1
Estimated H-index: 1
,
Nolwenn Callac3
Estimated H-index: 3
... more
Protection against arsenic damage in organisms positioned deep in the tree of life points to early evolutionary sensitization. Here, marine sedimentary records reveal a Proterozoic arsenic concentration patterned to glacial-interglacial ages. The low glacial and high interglacial sedimentary arsenic concentrations, suggest deteriorating habitable marine conditions may have coincided with atmospheric oxygen decline after ~2.1 billion years ago. A similar intensification of near continental margin...
10 Citations Download PDF Cite
2016 in Environmental Microbiology [IF: 4.97]
Anastasis Oulas7
Estimated H-index: 7
,
Paraskevi N. Polymenakou13
Estimated H-index: 13
,
Rekha Seshadri21
Estimated H-index: 21
(Joint Genome Institute)
... more
Author(s): Oulas, A; Polymenakou, PN; Seshadri, R; Tripp, HJ; Mandalakis, M; Paez-Espino, AD; Pati, A; Chain, P; Nomikou, P; Carey, S; Kilias, S; Christakis, C; Kotoulas, G; Magoulas, A; Ivanova, NN; Kyrpides, NC | Abstract: © 2016 Society for Applied Microbiology and John Wiley a Sons Ltd. Hydrothermal vents represent a deep, hot, aphotic biosphere where chemosynthetic primary producers, fuelled by chemicals from Earth's subsurface, form the basis of life. In this study, we examined microbial m...
11 Citations Source Cite
2015 in Geobiology [IF: 4.16]
E. Chi Fru2
Estimated H-index: 2
(Stockholm University),
Magnus Ivarsson12
Estimated H-index: 12
(Swedish Museum of Natural History),
Stephanos P. Kilias9
Estimated H-index: 9
(National and Kapodistrian University of Athens)
... more
A 2.0-million-year-old shallow-submarine sedimentary deposit on Milos Island, Greece, harbours an unmetamorphosed fossiliferous iron formation (IF) comparable to Precambrian banded iron formations (BIFs). This Milos IF holds the potential to provide clues to the origin of Precambrian BIFs, relative to biotic and abiotic processes. Here, we combine field stratigraphic observations, stable isotopes of C, S and Si, rock petrography and microfossil evidence from a 5-m-thick outcrop to track potentia...
3 Citations Source Cite
2015 in Scientific Reports [IF: 4.12]
Richard Camilli21
Estimated H-index: 21
,
Paraskevi Nomikou15
Estimated H-index: 15
,
J. Escartin34
Estimated H-index: 34
... more
Natural CO 2 releases from shallow marine hydrothermal vents are assumed to mix into the water column, and not accumulate into stratified seafloor pools. We present newly discovered shallow subsea pools located within the Santorini volcanic caldera of the Southern Aegean Sea, Greece, that accumulate CO 2 emissions from geologic reservoirs. This type of hydrothermal seafloor pool, containing highly concentrated CO 2 , provides direct evidence of shallow benthic CO 2 accumulations originating from...
6 Citations Download PDF Cite
Paraskevi Nomikou15
Estimated H-index: 15
,
Steven Carey41
Estimated H-index: 41
,
Stephanos P. Kilias9
Estimated H-index: 9
... more
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2013 in Nature Communications [IF: 12.35]
Ernest Chi Fru4
Estimated H-index: 4
,
Magnus Ivarsson6
Estimated H-index: 6
,
Stephanos P. Kilias9
Estimated H-index: 9
... more
Debates on the formation of banded iron formations in ancient ferruginous oceans are dominated by a dichotomy between abiotic and biotic iron cycling. This is fuelled by difficulties in unravelling the exact processes involved in their formation. Here we provide fossil environmental evidence for anoxygenic photoferrotrophic deposition of analogue banded iron rocks in shallow marine waters associated with an Early Quaternary hydrothermal vent field on Milos Island, Greece. Trace metal, major and ...
31 Citations Download PDF Cite
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