TY - JOUR
T1 - Bacteriohopanepolyols in tropical soils and sediments from the Congo River catchment area
AU - Spencer-Jones, Charlotte
AU - Wagner, Thomas
AU - Dinga, Bienvenu
AU - Schefuß, Enno
AU - Mann, Paul
AU - Poulsen, John
AU - Spencer, Robert
AU - Wabakanghanzi, Jose
AU - Talbot, Helen
PY - 2015/12
Y1 - 2015/12
N2 - 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.
AB - 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.
KW - adenosylhopane
KW - tropical soil
KW - methanotrophic bacteria
KW - Congo
KW - Wetland
U2 - 10.1016/j.orggeochem.2015.09.003
DO - 10.1016/j.orggeochem.2015.09.003
M3 - Article
SN - 0146-6380
VL - 89-90
SP - 1
EP - 13
JO - Organic Geochemistry
JF - Organic Geochemistry
ER -