Biomarker proxies for reconstructing Quaternary climate and environmental change

EL McClymont, H Mackay… - Journal of …, 2023 - Wiley Online Library
To reconstruct past environmental changes, a range of indirect or proxy approaches can be
applied to Quaternary archives. Here, we review the complementary and novel insights that …

Coupling of the ecosystems in North China with the East Asian summer monsoon rainfall during the Holocene

J Zhao, J Liu, J Liu, S Chen, L Wang, A Zhou… - Quaternary Science …, 2023 - Elsevier
Abstract The influence of Holocene East Asian Summer Monsoon (EASM) rainfall on
ecosystems over northern China remains controversial: delay or synchronization. Here we …

Group 2i Isochrysidales produce characteristic alkenones reflecting sea ice distribution

KJ Wang, Y Huang, M Majaneva, ST Belt… - Nature …, 2021 - nature.com
Alkenones are biomarkers produced solely by algae in the order Isochrysidales that have
been used to reconstruct sea surface temperature (SST) since the 1980s. However …

Phylogeny, alkenone profiles and ecology of Isochrysidales subclades in saline lakes: Implications for paleosalinity and paleotemperature reconstructions

Y Yao, J Zhao, RS Vachula, S Liao, G Li… - … et Cosmochimica Acta, 2022 - Elsevier
Long-chain alkenones (LCAs) produced by phylogenetically classified Groups 1 and 3
Isochrysidales are increasingly used for paleotemperature and/or paleosalinity …

Group 2i Isochrysidales flourishes at exceedingly low growth temperatures (0 to 6° C)

S Liao, Y Huang - Organic Geochemistry, 2022 - Elsevier
Abstract Group 2i Isochrysidales (Haptophyta) microalgae were recently suggested to be the
main producer of the C 37: 4 alkenone in high latitude oceans with seasonal sea ice …

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 …

Machine learning reveals that sodium concentration and temperature influence alkenone occurrence in Swiss and worldwide freshwater lakes

C Martin, N Richter, R Lloren, L Amaral-Zettler… - Frontiers in Earth …, 2024 - frontiersin.org
Lacustrine alkenones are increasingly reported in freshwater lakes worldwide, which makes
them a very promising proxy to reconstruct past continental temperatures. However, a more …

Group 2i Isochrysidales thrive in marine and lacustrine systems with ice cover

KJ Wang, Y Huang, T Kartzinel, M Majaneva… - Scientific Reports, 2024 - nature.com
Global warming is causing rapid changes to the cryosphere. Predicting the future trajectory
of the cryosphere requires quantitative reconstruction of its past variations. A recently …

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 …

Extended chain length alkenoates differentiate three Isochrysidales groups

S Liao, KJ Wang, Y Huang - Organic Geochemistry, 2021 - Elsevier
Alkenoates and alkenones are polyunsaturated long-chain esters and ketones produced by
members of the Isochrysidales, an order of haptophyte microalgae. Based on phylogenetic …