Bacteriohopanepolyols in tropical soils and sediments from the Congo River catchment area

Spencer-Jones, Charlotte, Wagner, Thomas, Dinga, Bienvenu, Schefuß, Enno, Mann, Paul, Poulsen, John, Spencer, Robert, Wabakanghanzi, Jose and Talbot, Helen (2015) Bacteriohopanepolyols in tropical soils and sediments from the Congo River catchment area. Organic Geochemistry, 89-90. pp. 1-13. ISSN 0146-6380

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Official URL: http://dx.doi.org/10.1016/j.orggeochem.2015.09.003

Abstract

The Congo River basin drains the second largest area of tropical rainforest in the world, including a large proportion of pristine wetlands. We present the bacteriohopanepolyol (BHP) inventory of a suite of tropical soils and, from comparison with published data, propose some initial ideas on BHP distribution
controls. Strong taxonomic controls on BHP production are evident in wetland sediments. Dominant within the suite were 35-aminobacteriohopane-31,32,33,34-tetrol (aminotetrol) and 35-aminobacterio hopane-30,31,32,33,34-pentol (aminopentol), indicating aerobic methanotrophy. A narrow range and low mean relative abundance of 30-(50-adenosyl)hopane (adenosylhopane) and related compounds, collectively termed ‘‘soil marker” BHPs, were observed in Congo soils (mean 17%, range 7.9–36% of total BHPs, n = 22) compared with literature data from temperate surface soils and Arctic surface soils (mean 36%, range 0–66% of total BHPs, n = 28) suggesting a greater rate of conversion of these BHP precursors to other structures.

Item Type: Article
Uncontrolled Keywords: adenosylhopane, tropical soil, methanotrophic bacteria, Congo, Wetland
Subjects: F800 Physical and Terrestrial Geographical and Environmental Sciences
F900 Others in Physical Sciences
Department: Faculties > Engineering and Environment > Geography and Environmental Sciences
Depositing User: Paul Mann
Date Deposited: 26 Oct 2015 09:57
Last Modified: 23 Sep 2017 04:14
URI: http://nrl.northumbria.ac.uk/id/eprint/24134

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