Characterization of unusual sterols and long chain diols, triols, keto-ols and n-alkenols in El Junco Lake, Galápagos / (Registro nro. 12839)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02559nab a22003617a 4500 |
| 003 - CONTROL NUMBER IDENTIFIER | |
| control field | EC-PaCDF |
| 005 - DATE AND TIME OF LATEST TRANSACTION | |
| control field | 20201015104506.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 160905b20142014xxu|||||||||||||||||eng|| |
| 040 ## - CATALOGING SOURCE | |
| Original cataloging agency | EC-PaCDF |
| Language of cataloging | spa |
| Transcribing agency | EC-PaCDF |
| 041 ## - LANGUAGE CODE | |
| Language code of text/sound track or separate title | eng |
| 082 04 - DEWEY DECIMAL CLASSIFICATION NUMBER | |
| Edition number | 23 |
| Classification number | 551.9 |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Atwood, Alyssa R. |
| 9 (RLIN) | 5557 |
| Relator term | autor |
| 245 10 - TITLE STATEMENT | |
| Title | Characterization of unusual sterols and long chain diols, triols, keto-ols and n-alkenols in El Junco Lake, Galápagos / |
| Statement of responsibility, etc. | Alyssa R. Atwood, John K. Volkman and Julian P. Sachs. |
| 260 3# - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Date of publication, distribution, etc. | 2014. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Extent | : 80-89 p. |
| 520 0# - SUMMARY, ETC. | |
| Summary, etc. | A variety of lipid biomarkers were identified in sediments from El Junco Lake, Galápagos and their sources investigated for potential use in paleoclimate applications. A series of unusual sterols was also found, including 4 a-methylgorgostanol, reported in only four species of dinoflagellates to date. We also tentatively assigned 22,23-methylene-4a-methyl-24-ethylcholest-5-en-3b-ol, the mass spectrum of which matched a sterol found in resting cysts of the dinoflagellate Peridinium umbonatum. In addition, we identified the novel sterol 4a,22,23,24-tetramethyl-5a-cholest-22E-en-3b-ol. Based on the unique sterol distribution, we hypothesize that a dinoflagellate from the genus Peridinium was the primary source of dinosterol and the novel sterols throughout the sediment record. The source specificity and abundance throughout the 3.7 m of recovered sediment make dinosterol an excellent target for hydrogen isotope analysis for use as a paleohydrological proxy in future studies. The abundant C 1,x20-diols and keto-ols, C29 9,10-diol and C2930 1,x9,x10-triol likely derive from the ferns Azolla microphylla and Cyathea weatherbyana, while sources of the C30 1,x16-diol and keto-ol, C1,x18-diol and keto-ol, and theC30–C32 32n-alken-1-ols are likely limited to aquatic microalgae. Due to their source specificity, these diol, triol, keto-ol, and n-alkenol biomarkers present further tools for studying past environmental and climatic change. |
| 546 ## - LANGUAGE NOTE | |
| Language note | Inglés |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Characterization |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Caracterización |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Sterols |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Esteroles |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Triols |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Keto-ols |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | N-alkenols |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Junco Lake |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Lago Junco |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | Galápagos |
| 700 ## - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Volkman, John K. |
| 9 (RLIN) | 5558 |
| Relator term | autor |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Sachs, Julian P. |
| 9 (RLIN) | 2906 |
| Relator term | autor |
| 773 0# - HOST ITEM ENTRY | |
| Title | Organic Geochemistry. |
| Related parts | Vol. 66 (2014), p. 80–89. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | http://dx.doi.org/10.1016/j.orggeochem.2013.11.004 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Source of classification or shelving scheme | Dewey Decimal Classification |
| Koha item type | Artículo |
| Withdrawn status | Source of classification or shelving scheme | Damaged status | Not for loan | Collection code | Home library | Current library | Shelving location | Date acquired | Total Checkouts | Full call number | Barcode | Date last seen | Price effective from | Koha item type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Colección PDF | 05/09/2016 | 551.9 ATW 2014 | 2021-1327 | 05/09/2016 | 05/09/2016 | Documento electrónico | ||||
| Dewey Decimal Classification | Galápagos | Corley Smith Library | Corley Smith Library | Artículos | 26/01/2017 | 551.9 ATW 2014 | 2020-0712 | 26/01/2017 | 26/01/2017 | Artículo |