Antoine Champreux

Antoine Champreux
Flinders University · College of Science and Engineering

Master of Science
PhD student in palaeoecology

About

5
Publications
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Introduction
I am a palaeoecologist and palaeobotanist, PhD student in palaeoecological modelling. My work aims to describe processes that drove ecosystem changes in the Neotropical realm over the last 20,000 years.

Publications

Publications (5)
Article
Gondwanan floras of Late Devonian age are poorly known. In Australia, the rare studies that have been published on Late Devonian plants are old and need reinvestigation. This paper is an account of the plant macro- and micro-remains found in the Mandowa Mudstone at Barraba, New South Wales. According to the miospores, plants are late to latest Fame...
Article
Full-text available
The first plants related to the ferns are represented by several extinct groups that emerged during the Devonian. Among them, the iridopterids are closely allied to the sphenopsids, a group represented today by the genus Equisetum . They have been documented in Middle to early Late Devonian deposits of Laurussia and the Kazakhstan plate. Their Gond...
Article
Full-text available
The koala’s (Phascolarctos cinereus) distribution is currently restricted to eastern and south-eastern Australia. However, fossil records dating from 70 ± 4 ka (ka = 103 years) from south-western Australia and the Nullarbor Plain are evidence of subpopulation extinctions in the southwest at least after the Last Interglacial (128-116 ka). We hypothe...
Conference Paper
Full-text available
The Barraba flora (late Famennian, New South Wales) comprises plant permineralizations and compressions, recorded in the marine deposits of the Mandowa Mudstone formation. Those sediments were deposited in the Drummond foreland basin, inboard of a volcanic arc in eastern Australia during the Late Devonian. Besides the numerous Leptophloeum compress...

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Projects

Project (1)
Project
This project will provide new insights on how past events since the Last Glacial Maximum (~20,000 years ago) caused megafauna extinctions, and shaped the present day distribution of the Neotropical vegetation such as the emblematic Amazon rainforest, the Cerrado tropical savanna, or the Argentine Pampas. Following previous attempts to decide whether climate change or human colonisation were responsible for the megafauna extinction based on local timing comparison, this project will focus on ecological processes involved, simulate, and validate them with independent fossil records at global scale to examine the plausibility of each hypothesis. These include whether climate warming, human predation, and human-induced fire could have affected vegetation patterns and megaherbivore populations at large scales.