Lipids of geochemical interest in microalgae

JK Volkman - Hydrocarbons, Oils and Lipids: Diversity, Origin …, 2020 - Springer
Microalgae have a long geological history and a diversity of biochemical constituents which
vary systematically between algal classes. This review provides an update on those lipid …

Abrupt cooling of cold seasons at the middle-late Holocene transition revealed by alkenone records from North China

J Zhao, J Liu, J Liu, S Chen, A Zhou, L Chen… - Quaternary Science …, 2024 - Elsevier
In saline lakes, the paleoenvironmental interpretation of long-chain alkenones (LCAs) is
difficult due to the inputs of Isochrysidales Group 2i, which are ice-related bloomers. Here …

Widespread occurrence of distinct alkenones from Group I haptophytes in freshwater lakes: Implications for paleotemperature and paleoenvironmental reconstructions

WM Longo, Y Huang, Y Yao, J Zhao, AE Giblin… - Earth and Planetary …, 2018 - Elsevier
Alkenones are C 35–C 42 polyunsaturated ketone lipids that are commonly employed to
reconstruct changes in sea surface temperature. However, their use in coastal seas and …

Systematic chemotaxonomic profiling and novel paleotemperature indices based on alkenones and alkenoates: Potential for disentangling mixed species input

Y Zheng, P Heng, MH Conte, RS Vachula… - Organic Geochemistry, 2019 - Elsevier
The unsaturation indices (U 37 K, U 37 K') of long chain alkenones are powerful
paleotemperature proxies and have been widely applied for sea surface temperature (SST) …

Novel alkenone-producing strains of genus Isochrysis (Haptophyta) isolated from Canadian saline lakes show temperature sensitivity of alkenones and alkenoates

H Araie, H Nakamura, JL Toney, HA Haig, J Plancq… - Organic …, 2018 - Elsevier
Alkenone-producing species have been recently found in diverse lacustrine environments,
albeit with taxonomic information derived indirectly from environmental genomic techniques …

Paleoceanographic importance of tri-and di-unsaturated alkenones through the early phase of Cretaceous Oceanic Anoxic Event 2 from southern high latitudes of the …

T Hasegawa, AS Goto - Organic Geochemistry, 2024 - Elsevier
Alkenones are biomarkers derived exclusively from species of haptophyte algae. The
relative abundance of di-to tri-unsaturated C 37 alkenones expressed as U K'37 is widely …

C41 methyl and C42 ethyl alkenones are biomarkers for Group II Isochrysidales

S Liao, Y Yao, L Wang, KJ Wang, L Amaral-Zettler… - Organic …, 2020 - Elsevier
Alkenones are polyunsaturated long-chain methyl or ethyl ketones produced by species in
the Isochrysidales, an order of haptophyte algae. Based on phylogenetic data, members of …

Lipid biomarker production by marine phytoplankton under different nutrient and temperature regimes

Y Ding, R Bi, J Sachs, X Chen, H Zhang, L Li… - Organic …, 2019 - Elsevier
The ocean's biological pump strongly influences atmospheric CO 2 and regulates Earth's
climate. Determining the contribution of different phytoplankton groups to the biological …

Alkenone paleothermometry in coastal settings: evaluating the potential for highly resolved time series of sea surface temperature

JM Salacup, JR Farmer, TD Herbert… - Paleoceanography and …, 2019 - Wiley Online Library
The unsaturation ratios of alkenones have been applied widely to reconstruct pelagic sea
surface temperatures (SSTs). However, applications to costal settings have been hampered …

Successional blooms of alkenone‐producing haptophytes in Lake George, North Dakota: implications for continental paleoclimate reconstructions

S Theroux, Y Huang, JL Toney… - Limnology and …, 2020 - Wiley Online Library
Alkenone‐derived paleotemperature reconstruction holds great promise in lake
environments. However, the occurrence of multiple species of alkenone‐producing …