ORCID Profile
0000-0002-1391-2151
Current Organisations
Central South University
,
European Trade Union Institute
,
The University of Auckland
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Publisher: Wiley
Date: 20-02-2023
DOI: 10.1002/JQS.3506
Abstract: The ~25.5‐ka Ōruanui supereruption (Taupō volcano, New Zealand) erupted km 3 of pyroclastic material during the Last Glacial Maximum. The impacts of this event on climate and the New Zealand environment remain unresolved, particularly on ecological timescales. Using sediment cores from Onepoto maar palaeolake, Auckland (~240 km upwind from source), we have analysed pollen assemblages at contiguous 1‐mm intervals, around an intact 3‐cm layer of the Kawakawa‐Ōruanui Tephra to resolve and assess post‐eruption vegetation impacts and landscape recovery. Sediments immediately above the tephra record a decline in the relative abundance of the dominant canopy species of Fuscospora , and concurrent increase in the abundances of grasses, herbs, ferns and shrubs. These changes reflect a brief ( years) part‐defoliation of canopy trees, permitting more light to penetrate and to encourage sub‐canopy vegetation growth. A short‐lived volcanogenic cooling inferred from Antarctic ice core records may have contributed to the changes but cannot be separated from the immediate and direct ecological impacts of ashfall on vegetation following the eruption. Our results, here applied to the world's most recent supereruption, more generally demonstrate the value of millimetre‐scale stratigraphic pollen analysis from non‐varved lacustrine sediments as a tool for assessing past eruptive impacts on sub‐decadal timescales.
Publisher: Springer Science and Business Media LLC
Date: 05-09-2012
Publisher: Springer Science and Business Media LLC
Date: 05-2006
Publisher: Elsevier BV
Date: 04-2011
Publisher: Informa UK Limited
Date: 04-02-2018
Publisher: American Chemical Society (ACS)
Date: 18-12-2019
Abstract: A biomimetic approach to total synthesis can offer several benefits, including the development of cascade reactions for the rapid generation of molecular complexity, and guidance in the structure revision of old natural products and the anticipation of new ones. Herein, we describe how a biomimetic synthesis of bruceol, a pentacyclic meroterpenoid, led to the anticipation, isolation, and synthesis of isobruceol. The key step in the synthesis of both bruceol and isobruceol was an intramolecular hetero-Diels-Alder reaction of an
Publisher: Elsevier BV
Date: 10-2013
Publisher: Springer Science and Business Media LLC
Date: 02-2023
Publisher: Elsevier BV
Date: 08-2019
Publisher: Elsevier BV
Date: 15-05-2005
Publisher: Elsevier BV
Date: 12-2001
Publisher: Proceedings of the National Academy of Sciences
Date: 14-01-2020
Start Date: 2021
End Date: 2024
Funder: Marsden Fund
View Funded Activity