{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,26]],"date-time":"2026-03-26T15:13:17Z","timestamp":1774537997572,"version":"3.50.1"},"reference-count":92,"publisher":"Copernicus GmbH","issue":"11","license":[{"start":{"date-parts":[[2023,6,12]],"date-time":"2023-06-12T00:00:00Z","timestamp":1686528000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100007472","name":"Funda\u00e7\u00e3o Luso-Americana para o Desenvolvimento","doi-asserted-by":"publisher","award":["Crossing the Atlantic"],"award-info":[{"award-number":["Crossing the Atlantic"]}],"id":[{"id":"10.13039\/501100007472","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["UIDB\/50027\/2020"],"award-info":[{"award-number":["UIDB\/50027\/2020"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/501100001871","name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia","doi-asserted-by":"publisher","award":["DL57\/2016\/ ICETA\/EEC2018\/25"],"award-info":[{"award-number":["DL57\/2016\/ ICETA\/EEC2018\/25"]}],"id":[{"id":"10.13039\/501100001871","id-type":"DOI","asserted-by":"publisher"}]},{"DOI":"10.13039\/100017334","name":"Soehngen Institute of Anaerobic Microbiology","doi-asserted-by":"publisher","award":["024.002.002"],"award-info":[{"award-number":["024.002.002"]}],"id":[{"id":"10.13039\/100017334","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Biogeosciences"],"abstract":"<jats:p>Abstract. Bacteriohopanepolyols (BHPs) are a diverse class of lipids\nproduced by bacteria across a wide range of environments. In this study, we\naim to further identify BHPs related to ecological niches and\/or specific\nbacteria by characterizing the distribution of BHPs in suspended particulate\nmatter (SPM) of the water column and in sediments in a range of lakes and\ncoastal lagoons from the Azores Archipelago, as well as in a co-culture\nenriched for methanotrophs. Sediment samples from Azorean lakes with low-oxygen conditions during the summer months (i.e., Azul, Verde, Funda, and\nNegra) contain relatively high abundances of BHPs that are typically\nassociated with methane-oxidizing (methanotrophic) bacteria (i.e.,\naminotetrol, aminopentol, and methylcarbamate-aminopentol), as well as the\nethenolamine-BHPs (i.e., ethenolamine-BHpentol and ethenolamine-BHhexol) and\nthe N-formylated aminoBHPs. Both ethenolamine-BHPs and N-formylated\naminoBHPs were also detected in a methanotroph\u2013methylotroph co-culture that\nwas enriched from a lake. In the SPM of all water columns,\nbacteriohopanetetrol (BHT), BHT cyclitol ether, and aminotriol are the\ndominant BHPs. In SPM from Lake Funda, nucleoside BHPs (i.e.,\nMe-adenosylhopaneHG-diMe (where HG refers to head group), N1-methylinosylhopane, 2Me-N1-inosylhopane,\nand Me-N1-inosylhopane) are present in low abundance or absent under oxic\nconditions but increase in concentration near the chemocline, suggesting\npotential in situ production of these nucleoside BHPs rather than an allochthonous\norigin. In contrast, sediments from shallow, well-mixed lakes (i.e.,\nEmpadadas, S\u00e3o Jorge, and Lomba) contain higher abundances of\nadenosylhopane and N1-methylinosylhopane, which likely originate from\nbacteria living in nearby soils. Based on our current results we revised the\nexisting Rsoil index, which was previously used to infer terrestrial\ninputs to aquatic environments, to exclude any potential nucleosides\nproduced in the lake water column (Rsoil-lake). In the coastal lagoons,\nCubres East and Cubres West, methoxylated BHTs were detected, and higher abundances\nof ethenolamine-BHT were observed. This study highlights the diversity of\nBHPs in lakes and coastal lagoons and their potential as taxonomic markers\nfor bacteria associated with certain ecological niches, which can be\npreserved in sedimentary records.<\/jats:p>","DOI":"10.5194\/bg-20-2065-2023","type":"journal-article","created":{"date-parts":[[2023,6,12]],"date-time":"2023-06-12T02:53:02Z","timestamp":1686538382000},"page":"2065-2098","source":"Crossref","is-referenced-by-count":7,"title":["Distributions of bacteriohopanepolyols in lakes and coastal lagoons of the Azores Archipelago"],"prefix":"10.5194","volume":"20","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4613-005X","authenticated-orcid":false,"given":"Nora","family":"Richter","sequence":"first","affiliation":[]},{"given":"Ellen C.","family":"Hopmans","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-8290-2045","authenticated-orcid":false,"given":"Danica","family":"Mitrovi\u0107","sequence":"additional","affiliation":[]},{"given":"Pedro M.","family":"Raposeiro","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5737-296X","authenticated-orcid":false,"given":"V\u00edtor","family":"Gon\u00e7alves","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0258-3460","authenticated-orcid":false,"given":"Ana C.","family":"Costa","sequence":"additional","affiliation":[]},{"given":"Linda A.","family":"Amaral-Zettler","sequence":"additional","affiliation":[]},{"given":"Laura","family":"Villanueva","sequence":"additional","affiliation":[]},{"given":"Darci","family":"Rush","sequence":"additional","affiliation":[]}],"member":"3145","published-online":{"date-parts":[[2023,6,12]]},"reference":[{"key":"ref1","doi-asserted-by":"crossref","unstructured":"Bale, N. 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S.: Sources for sedimentary\nbacteriohopanepolyols as revealed by 16S rDNA stratigraphy, Environ.\nMicrobiol., 10, 1783\u20131803,\nhttps:\/\/doi.org\/10.1111\/j.1462-2920.2008.01601.x, 2008.","DOI":"10.1111\/j.1462-2920.2008.01601.x"},{"key":"ref14","doi-asserted-by":"crossref","unstructured":"Cordeiro, R., Luz, R., Vilaverde, J., Vasconcelos, V., Fonseca, A., and\nGon\u00e7alves, V.: Distribution of Toxic Cyanobacteria in Volcanic Lakes of\nthe Azores Islands, Water, 12, 3385, https:\/\/doi.org\/10.3390\/w12123385,\n2020.","DOI":"10.3390\/w12123385"},{"key":"ref15","doi-asserted-by":"crossref","unstructured":"Cvejic, J. H., Bodrossy, L., Kov\u00e1cs, K. L., and Rohmer, M.: Bacterial\ntriterpenoids of the hopane series from the methanotrophic bacteria\nMethylocaldum spp.: phylogenetic implications and first evidence for an unsaturated\naminobacteriohopanepolyol, FEMS Microbiol. 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USA, 108, E1045\u2013E1051,\nhttps:\/\/doi.org\/10.1073\/pnas.1104209108, 2011.","DOI":"10.1073\/pnas.1104209108"},{"key":"ref20","doi-asserted-by":"crossref","unstructured":"Elling, F. J., Evans, T. W., Nathan, V., Hemingway, J. D., Kharbush, J. J.,\nBayer, B., Spieck, E., Husain, F., Summons, R. E., and Pearson, A.: Marine\nand terrestrial nitrifying bacteria are sources of diverse\nbacteriohopanepolyols, Geobiology, 20, 399\u2013420,\nhttps:\/\/doi.org\/10.1111\/gbi.12484, 2022.","DOI":"10.1111\/gbi.12484"},{"key":"ref21","doi-asserted-by":"crossref","unstructured":"Farrimond, P., Head, I. M., and Innes, H. E.: Environmental influence on the\nbiohopanoid composition of recent sediments, Geochim. 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