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Abiogenic formation of alkanes in the Earth's crust as a minor source for global hydrocarbon reservoirs
The progressive isotopic trends for the series of C1–C4 alkanes indicate that hydrocarbon formation occurs by way of polymerization of methane precursors, and it can now be rule out the presence of a globally significant abiogenic source of hydrocarbons.
Unravelling abiogenic and biogenic sources of methane in the Earth's deep subsurface
The Origin and Age of Biogeochemical Trends in Deep Fracture Water of the Witwatersrand Basin, South Africa
Water residing within crustal fractures encountered during mining at depths greater than 500 meters in the Witwatersrand basin of South Africa represents a mixture of paleo-meteoric water and 2.0–2.3…
Ethology and ecology of cichlid fishes of the genus Etroplus in Sri Lanka: preliminary findings
Asian cichlid fishes, Etroplus maculatus ( Bloch) and E. suratensis (Bloch) were observed in their natural habitat and displays a unique behavior during its parental cycle where both parents actively defend their young until they are nearly sexually mature and almost the size of the parents.
Microbial hydrocarbon gases in the Witwatersrand Basin, South Africa: Implications for the deep biosphere 1 1 Associate editor: R. Summons
Hydrogen isotope fractionation during methanogenic degradation of toluene: Potential for direct verification of bioremediation
- J. Ward, J. Ahad, G. Lacrampe-Couloume, G. Slater, E. Edwards, B. Lollar
- Environmental Science, Biology
- 28 September 2000
The very large isotopic enrichment in H-2 suggests that under anaerobic conditions compound specific hydrogen isotopes analysis may provide a more reliable means of validating intrinsic bioremediation of aromatic hydrocarbons than stable carbon isotope analysis.
The Communicative Function of Pelvic Fin-Flickering in Etroplus Maculatus (Pisces, Cichlidae)
The calling frequency of the parents was as much as 17 times greater during disturbed conditions than during undisturbed conditions, and the changes in school activity as a function of increased calling are discussed in light of their adaptive significance.
The development of behavior in the cichlid fish Etroplus maculatus (Bloch).
Radiolytic H 2 in continental crust: A potential energy source for microbial metabolism in deep biosphere
A cornerstone of applications utilizing in situ cosmogenic nuclides is the ability to scale production rates from the few sites where they are well-established to sites under study. Theoretical…
Effects of monochloramine on courtship and spawning in the cichlid fish Etroplus maculatus
It is concluded that sublethal levels of monochloramine alter courtship behavior and decrease reproductive success in Etroplus maculatus.