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Вид документа : Статья из сборника (однотомник)
Шифр издания :
Автор(ы) : Bartsev S.I.
Заглавие : Essence of life and multiformity of its realization: expected signatures of life
Колич.характеристики :5 с
Место публикации : SPACE LIFE SCIENCES: SEARCH FOR SIGNATURES OF LIFE, AND SPACE FLIGHT ENVIRONMENTAL EFFECTS ON THE NERVOUS SYSTEM. Ser. ADVANCES IN SPACE RESEARCH-SERIES: PERGAMON-ELSEVIER SCIENCE LTD, 2004. - Vol. 33: 2nd World Space Congress/34th COSPAR Scientific Assembly (OCT 10-19, 2002, HOUSTON, TX), Is. 8. - P1313-1317. - ISBN 0273-1177, DOI 10.1016/j.asr.2003.08.032
Примечания : Cited References: 23
Предметные рубрики: COMPLEX NETWORKS
EMERGENCE
EVOLUTION
Ключевые слова (''Своб.индексиров.''): astrobiology--signatures of life--essence of life--multiformity of life
Аннотация: The question on the essence of life as phenomenon is the key one for astrobiology, since the answer to this question determines "breadth of our outlook". Taking Earth's version of life as the pattern extremely under-estimates our estimation of the probability of life origin and respectively expected probability of extraterrestrial life discovery. In the paper the hypothetical key attribute of life in general is selected on the base of comparative analyses and deductive inference. Simulation conducted on the base of neural network model shows that the same function could be realized by means of great variety of structures, which originated in the course of an evolutionary process. So multiplicity of evolutionary outcomes essentially increases the probability of final result - realization of an integrated function providing fitness to environment. Life as the integrated function can be realized via great variety of development ways and structures. A logical consequence of definitions for life as phenomenon is suggested. Final one is "Life is specific organization of informational and energetic processes coupling, enabling choice-making, and displayed as anomalies of different kinds". Anomalies of visible form, mechanical movement, chemical composition and noticeable response are considered. Presented in the paper sweeping generalization is not rigorously proven, however it can play heuristic role in increasing the level of specificity of searching for extraterrestrial life. (C) 2004 COSPAR. Published by Elsevier Ltd. All rights reserved.
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Вид документа : Статья из журнала
Шифр издания :
Автор(ы) : Yermokhin M. V., Sushchik N. N., Tabachishin V. G., Kalacheva G. S., Kolmakova A. A., Gladyshev M. I.
Заглавие : Amphibia as a Vector of Transfer of Long-Chain Polyunsaturated Omega-3 Fatty Acids from Aquatic to Terrestrial Ecosystems
Колич.характеристики :3 с
Коллективы : Russian Foundation for Basic Research [16-04-01248]; Russian Academy of Sciences [II.2P/VI.51-1]; Ministry of Education and Science of the Russian Federation [6.1504.2017/PCh]; program of the President of the Russian Federation for state support of leading scientific schools [NSh-9249.2016.5]
Место публикации : Dokl. Biochem. Biophys.: MAIK NAUKA/INTERPERIODICA/SPRINGER, 2018. - Vol. 481, Is. 1. - С. 195-197. - ISSN 1607-6729, DOI 10.1134/S160767291804004X. - ISSN 1608-3091(eISSN)
Примечания : Cited References:15. - This work was supported by the Russian Foundation for Basic Research (project no. 16-04-01248), project of the Russian Academy of Sciences no. II.2P/VI.51-1, the State Task of the Ministry of Education and Science of the Russian Federation to the Siberian Federal University for research (no. 6.1504.2017/PCh), and the program of the President of the Russian Federation for state support of leading scientific schools (project no. NSh-9249.2016.5).
Предметные рубрики: FATTY-ACIDS
WATER
INSECTS
EXPORT
LAND
EMERGENCE
BIOMASS
FLUXES
Аннотация: The flow of long-chain polyunsaturated fatty acids (PUFAs) of the omega-3 family, namely, eicosapentaenoic acid (20:5n-3, EPA) and docosahexaenoic acid (22:6n-3, DHA), exported by amphibian metamorphs from water to terrestrial ecosystems in the Medveditsa River floodplain, was quantified for the first time. The total biomass export by three amphibian species (Pelobates fuscus, Bombina bombina, and Pelophylax ridibundus) per unit area of the lake surface was 0.594 g/m(2) per year (as a mean for 2 years). The biomass flow per unit area of land was 0.726 g/ha per year (0.302 g/ha per year for organic carbon) in 2015-2016. The average annual total removal of EPA + DHA by amphibians from the floodplain lake was 1.47 mg/m(2) of water surface area. Due to the high content of EPA and DHA in biomass, amphibians are potentially a valuable food for terrestrial predators having no access to other sources of essential PUFAs.
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