Dust deposition drives microbial metabolism in a remote, high elevation catchment/ (Record no. 15056)
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| 000 -LEADER | |
|---|---|
| fixed length control field | 02234nab a2200217 4500 |
| 005 - DATE & TIME | |
| control field | 20231029134515.0 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION | |
| fixed length control field | 231029b |||||||| |||| 00| 0 eng d |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Bigelow, Amy |
| 245 ## - TITLE STATEMENT | |
| Title | Dust deposition drives microbial metabolism in a remote, high elevation catchment/ |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT) | |
| Name of publisher, distributor, etc | Sage, |
| Date of publication, distribution, etc | 2020. |
| 300 ## - PHYSICAL DESCRIPTION | |
| Pages | Vol. 30, issue 4, 2020 ( 589–596 p.). |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc | In barren alpine catchments of the Colorado Rocky Mountains, microorganisms are typically carbon (C)-limited, and C-limitation can influence critical heterotrophic processes, such as denitrification. In these remote locations, organic matter deposited during dust intrusion events and other forms of aerosol deposition may be an important C source for heterotrophs; however, little is known regarding the biodegradability of atmospherically deposited organic matter. This study evaluated the extent to which organic matter in Holocene dust and other types of atmospheric deposition in the Colorado Rocky Mountains could support metabolic activity and be biodegraded by alpine bacteria. Microplate bioassays revealed that all atmospheric deposition samples were able to activate microbial metabolism. Decreases in dissolved organic carbon (DOC) concentrations over time in biodegradability incubations reflect the presence of two pools of dissolved organic matter (DOM), a rapidly decaying pool with rate constants in the range of 0.0130–0.039 d–1 and a slowly decaying pool with rate constants in the range of 0.0008–0.009 d–1. Changes in the fluorescence excitation-emission matrix of solutions evaluated over time indicated a transformation of organic matter by bacteria resulting in a more humic-like fluorescence signature. Fluorescence spectroscopic analyses, therefore, suggest that the degradation of non-fluorescent DOM in glutamate and dust-derived C sources by bacteria results in the production of fluorescent DOM. |
| 700 ## - Added Entry Personal Name | |
| Added Entry Personal Name | Mladenov, Natalie |
| 700 ## - Added Entry Personal Name | |
| Added Entry Personal Name | Lipson, David |
| 700 ## - Added Entry Personal Name | |
| Added Entry Personal Name | Williams, Mark |
| 773 0# - HOST ITEM ENTRY | |
| Host Biblionumber | 12756 |
| Host Itemnumber | 17200 |
| Place, publisher, and date of publication | London: Sage Publication Ltd, 2019. |
| Title | Holocene/ |
| International Standard Serial Number | 09596836 |
| 856 ## - ELECTRONIC LOCATION AND ACCESS | |
| Uniform Resource Identifier | https://doi.org/10.1177/0959683619875191 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| Koha item type | E-Journal |
| 100 ## - MAIN ENTRY--PERSONAL NAME | |
| -- | 58952 |
| 700 ## - Added Entry Personal Name | |
| -- | 58953 |
| 700 ## - Added Entry Personal Name | |
| -- | 58954 |
| 700 ## - Added Entry Personal Name | |
| -- | 50824 |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) | |
| -- | ddc |
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