A5053764229- Geology and Paleoclimatology Research
- Isotope Analysis in Ecology
- Geological formations and processes
- Tree-ring climate responses
- Climate variability and models
- Coastal wetland ecosystem dynamics
- Pleistocene-Era Hominins and Archaeology
- Plant Water Relations and Carbon Dynamics
- Fire effects on ecosystems
- Ecology and Vegetation Dynamics Studies
- Archaeology and ancient environmental studies
- Hydrology and Watershed Management Studies
- Aquatic Invertebrate Ecology and Behavior
- Diatoms and Algae Research
- Freshwater macroinvertebrate diversity and ecology
- Climate change and permafrost
- Groundwater and Isotope Geochemistry
- Geochemistry and Geologic Mapping
- Peatlands and Wetlands Ecology
- Landslides and related hazards
- Pacific and Southeast Asian Studies
- Flood Risk Assessment and Management
- Fish Ecology and Management Studies
- Aquatic Ecosystems and Phytoplankton Dynamics
- Aeolian processes and effects
The University of Adelaide
2014-2024
University of Arizona
2022
Institut de l'Information Scientifique et Technique
2022
New York University Press
2022
Faculty of 1000 (United States)
2021
National University of Tierra del Fuego
2021
Queensland Department of Environment and Science
2011
Abstract The La Niña and El Niño phases of the Niño-Southern Oscillation (ENSO) have major impacts on regional rainfall patterns around globe, with substantial environmental, societal economic implications. Long-term perspectives ENSO behaviour, under changing background conditions, are essential to anticipating how may respond future climate scenarios. Here, we derive a 7700-year, quantitative precipitation record using carbon isotope ratios from single species leaf preserved in lake...
Summary Human‐induced environmental change threatens freshwater ecosystems, and knowing how these systems have responded to past variability can inform management decisions. Palaeoenvironmental reconstructions provide insight, although their low temporal resolution may mask short‐term responses. Hence, a combination of short‐term, high‐resolution contemporary data long‐term, low‐resolution palaeoenvironmental offer greater understanding system behaviour. We demonstrate this approach by...
ABSTRACT Few Australian wetlands have persisted since the Last Glacial Maximum, with fewer still in existence through entire last glacial cycle. The absence of wetlands, which itself indicates periods moisture deficit, means there are few continuous climate and environmental change records covering this critical period. lack wetland persistence also raises question how plant animal species that require permanent survived Sixteen been cored dated on North Stradbroke Island (Minjerribah) – a...
The management of the water resources Murray-Darling Basin (MDB) has long been contested, and effects recent Millennium drought subsequent flooding events have generated acute contests over appropriate allocation supplies to agricultural, domestic environmental uses. This water-availability crisis driven demand for improved knowledge climate change trends, cycles variability, range historical climates experienced by natural systems ecological health system relative a past benchmark. A...
The Great Sandy Region (incorporating Fraser Island and the Cooloola sand-mass), south-east Queensland, contains a significant area of Ramsar-listed coastal wetlands, including globally important patterned fen complexes. These mires form an elaborate network pools surrounded by vegetated peat ridges are only known subtropical, Southern Hemisphere examples, with wetlands this type typically located in high northern latitudes. Sedimentological, palynological charcoal analysis from Wathumba...
Quantitative reconstructions of terrestrial climate are highly sought after but rare, particularly in Australia. Carbon isotope discrimination plant leaves (Δleaf ) is an established indicator past hydroclimate because the fractionation carbon isotopes during photosynthesis strongly influenced by water stress. Leaves evergreen tree Melaleuca quinquenervia have been recovered from sediments some perched lakes on North Stradbroke and Fraser Islands, south-east Queensland, eastern Here, we...
Abstract Debate about the nature of climate and magnitude ecological change across Australia during last glacial maximum (LGM; 26.5–19 ka) persists despite considerable research into late Pleistocene. This is partly due to a lack detailed paleoenvironmental records reliable chronological frameworks. Geochemical geochronological analyses 60 ka sedimentary record from Brown Lake, subtropical Queensland, are presented considered in context climate-controlled environmental change. Optically...
Abstract Aim To understand the long‐term drivers of biomass burning in sclerophyll‐dominated forests Australia. Location Swallow Lagoon, North Stradbroke Island, Queensland, Time period Last ca. 8 kyr. Major taxa studied Eucalyptus sensu lato, Leptospermum and Casuarinaceae. Methods High‐resolution pollen charcoal analyses were undertaken on a kyr sediment record compared with an independent quantitative precipitation reconstruction inferred from leaf carbon isotopes same site. We performed...
Over the first two decades of 21st century, many wetlands in eastern Australia exhibited declining water levels, causing concern for communities and environmental managers raising questions about roles climate change other human activity these level declines. In this context we examine causes variability four on North Stradbroke Island (Minjerribah), humid subtropics south-eastern Queensland, Australia, using a combination hydrological isotope monitoring modelling. has high concentration...
ABSTRACT Wetland sediments are valuable archives of environmental change but can be challenging to date. Terrestrial macrofossils often sparse, resulting in radiocarbon ( 14 C) dating less desirable organic fractions. An alternative approach for capturing changes atmospheric C is the use terrestrial microfossils. We date pollen microfossils from two Australian wetland sediment sequences and compare these ages other fractions (n = 56). For Holocene Lake Werri Berri record, consistent with on...