A5061893868- Plant Diversity and Evolution
- Ecology and Vegetation Dynamics Studies
- Geology and Paleoclimatology Research
- Plant Water Relations and Carbon Dynamics
- Animal Ecology and Behavior Studies
- Plant responses to elevated CO2
- Fern and Epiphyte Biology
- Rangeland and Wildlife Management
- Forest Ecology and Biodiversity Studies
- Plant and animal studies
- Plant and Fungal Species Descriptions
- Botany and Geology in Latin America and Caribbean
- Wildlife Ecology and Conservation
- Architecture and Computational Design
- Evolution and Paleontology Studies
- Pleistocene-Era Hominins and Archaeology
- African Education and Politics
- Spatial Cognition and Navigation
- Urban and Rural Development Challenges
- Educational Environments and Student Outcomes
- Coastal wetland ecosystem dynamics
- Pasture and Agricultural Systems
- Design Education and Practice
- Plant Parasitism and Resistance
- Tree-ring climate responses
The University of Adelaide
2014-2024
Flinders University
2024
GTx (United States)
2024
Plateau State University
1994
It is well known that physical leaf traits influence functions, and these vary across environmental gradients. Stomata can function, with changes in density size affecting potential water loss, CO2 uptake, also cooling. Plasticity stomatal occurs response to factors; however, identifying which factors have the greatest often difficult. We investigated variation size, loss from open stomata (gwmax), Australian native shrub Dodonaea viscosa subsp. angustissima, a range of including...
Eucalypts have influenced the fire ecology of Australian landscape more than any other plant group. They are iconic taxon in vegetation today, but their origin, early evolution and migration remain poorly understood, mostly because a remarkably sparse underworked fossil record. However, recent major macrofossil find southern South America, coupled with increasing sophistication molecular phylogenetic palynological research allow for comprehensive summary likely history this group genera. It...
Intra-species variation in specific leaf area (SLA) and (LA) provides mechanistic insight into the persistence function of plants, including their likely success under climate change suitability for revegetation. We measured SLA LA 101 Australian populations perennial shrub Dodonaea viscosa (L.) Jacq. subsp. angustissima (narrow-leaf hop-bush) (Sapindaceae). Populations were located across about a 1000 km north–south gradient, with grading from arid desert to mesic Mediterranean. also leaves...
Within closed-canopy forests, vertical gradients of light and atmospheric CO2 drive variations in leaf carbon isotope ratios, mass per area (LMA), the micromorphology epidermal cells. Variations traits observed preserved or fossilized leaves could enable inferences past forest canopy closure function thereby habitat individual taxa. However, as yet no calibration study has examined how isotopic, micro- macromorphological traits, combination, reflect position within a modern these be applied...
<title>Abstract</title> <bold>Context:</bold> The threatened native rodent species Leporillus conditor (greater stick-nest rat) is extinct on the Australian mainland and now lives primarily small islands off coast of southern Australia. Many these are degraded novel ecosystems invaded by African boxthorn (Lycium ferocissimum), a weed national significance. However, L. does not appear to be negatively impacted presence boxthorn, raising question how two co-exist. <bold>Aims: </bold>To...
The Southern Hemisphere family Casuarinaceae has a long fossil record, both macrofossils and pollen, none of which provides any evidence about the morphology precursor to family. However, it been considered, from molecular phylogenies morphological data, that extant genus Gymnostoma retains key ancestral states highly reduced leaf area is result scleromorphic response low soil nutrients. by far earliest, most extensive best preserved macrofossil beginning in Late Paleocene. Modification...
Premise of research. This study describes a new fossil species Bowenia and reconsiders known their evolutionary significance.Methodology. The fossils we describe here were collected for this or available from previous collections made over several decades. identified by direct comparisons with extant species.Pivotal results. A reexamination newly discovered macrofossils confirms the presence at least three in Australia. species, johnsonii, is described southernmost location, Early Eocene...
Herbarium specimens and contemporary collections were used to investigate the effects of environment CO2 concentration on stomatal density, size, maximum potential water loss through stomata (gwmax) leaf width Melaleuca lanceolata Otto in southern Australia. Variation had no effect size or gwmax M. lanceolata. In contrast, density was negatively correlated with annual rainfall there significant, positive relationships between both elevation mean temperature density. There also a relationship...
Premise of research. This study compares the pinnule morphology three fossil Bowenia species, one Eobowenia (fossil) and several fragments with two extant species.Methodology. Pinnule area, stomatal density, size have been measured on specimens. Measures correlated solar radiation temperature to ascertain any correlations. Environment climate variables chosen, as they changed since Eocene Lower Cretaceous when Australian South American fossils were growing.Pivotal results. Two species...
Recently discovered fossils from Naracoorte Caves have enabled reconstruction of the local palaeovegetation region and improved understanding floristic changes that occurred during Quaternary. Here, we describe taxa represented by macrofossils vegetative remains extracted Robertson Cave sediment deposit, approximately 820–24,230 years BP. Three non-angiosperm (Racopilum cuspidigerum var. convalutaceum, Pteridium esculentum Callitris sp.) five angiosperm (Allocasuarina verticillata, Hibbertia...
Context The incorporation of invasive plants into novel ecosystems often has negative effects, but it can also sometimes enhance ecosystem function. threatened native rodent species Leporillus conditor (greater stick-nest rat) is extinct on the Australian mainland and now lives primarily small islands off coast southern Australia. Many these are degraded invaded by African boxthorn (Lycium ferocissimum), a weed national significance. However, L. does not appear to be negatively affected...
Intraspecific plant functional trait variation provides mechanistic insight into persistence and can infer population adaptive capacity. However, most studies explore intraspecific in systems where geographic environmental distances co-vary. Such a design reduces the certainty of trait-environment associations, it is imperative for that make associations be conducted distance varies independently distance. Here we explored such system, aimed to: (i) quantify parent offspring generations,...
The World Heritage Naracoorte Caves in southeastern South Australia are important palaeontological sites known primarily for their diverse vertebrate fossils. Some of the caves also contain well-preserved Quaternary plant macrofossils, but little palaeobotanical research has been undertaken to date. Here, we describe angiosperm taxa represented by macrofossils reproductive structures that have extracted from Robertson Cave sediment deposit; this an age range 820–24,230 years BP. We...
Fossil leaf anatomy has previously been used as a proxy for paleoclimate. However, the exposure of leaves to sun or shade during their growth can lead morphotype differences that confound interpretation fossil in relation climate and prevent reliable paleoclimate reconstruction. This work aims model are due various climatic drivers attributable positions, using Nothofagus cunninghamii species. Leaves from parts three trees have sampled each 11 sites Victoria Tasmania, Australia. The gross...
The careers of visually handicapped people who have been educated in post-primary schools and colleges Plateau State, Nigeria, are evaluated terms percentage employment, type employment further/higher educatio n. Recommendations for improving the quality education offered to students State then made.
<title>Abstract</title> Due to an abundance of feral predators on the mainland, native rodent species <italic>Leporillus conditor</italic> (greater stick-nest rats) live almost exclusively small islands off coast South Australia. Many these are heavily degraded novel ecosystems, overrun with African Boxthorn. boxthorn (<italic>Lycium ferocissimum</italic>) is aggressive invasive plant that negatively impacts biodiversity by outcompeting vegetation and degrading habitat. However, it can also...