Topic
Cooloola
About: Cooloola is a research topic. Over the lifetime, 35 publications have been published within this topic receiving 477 citations.
Papers
TL;DR: In this article, the authors used a combination of thermogravimetric analysis (TGA), differential thermal analysis (DTA) and scanning electron microscopy (SEM) methods.
Abstract: Thermoluminescence (TL) of quartz grains has been used to date a soil horizon at each of four sites in a chronosequence of freely drained podzols at Cooloola and North Stradbroke Island. The chronological order of the TL dates is in agreement with the sequence of inferred ages based on stratigraphic, geomorphic, denudational and pedological evidence, but at least one of the TL dates is of considerably greater age than the field evidence implies. Possible explanations of this anomaly are discussed. Differences in the nature of the quartz grains and the various pre-treatments used in TL dating were also examined by using a combination of thermogravimetric analysis (TGA), differential thermal analysis (DTA) and scanning electron microscopy (SEM) methods. The DTA showed no dissimilarity among the quartz samples from the different sites, but the TGA results showed significant weight losses for some samples and pretreatments. The SEM method further showed that weight loss is associated with water-sorbing substances (allophanic materials) present as coatings on grain surfaces and/or in cracks within grains.
74 citations
TL;DR: In this article, changes in soil nutrient stocks, foliar nutrient concentrations, and chemical forms of soil P along the Cooloola chronosequence, a series of coastal dunes spanning ca. 500,000 years of pedogenesis in subtropical Queensland, were examined.
67 citations
TL;DR: In three mobile dunes at Cooloola, Queensland, networks of fungal hyphae were very common in the surface 0-20 cm of bare sand of the colonizing zones, consistent with these fungi obtaining phosphorus from these surfaces.
Abstract: Soil, fungi, including species forming endomycorrhizae, appear to be important to pioneer plants colonizing coastal sand-dunes in the subtropics. In three mobile dunes at Cooloola, Queensland, networks of fungal hyphae were very common in the surface 0-20 cm of bare sand of the colonizing zones. These networks, consisting of long threads of hyphae, extend out into the bare sands from the roots of pioneer seedlings, most of which are endomycorrhizal. The fungi intermesh sand-grains to form aggregates which appear to be an important factor in stabilizing these loose sands.
The sands are dominantly quartz grains partly covered by thin sesquioxide coatings which contain some phosphorus. Phosphorus held by sesquioxide is generally regarded as being unavailable to most plants. However, the close attachment of hyphae to these coatings, the lack of alternative sources of phosphorus and the prominence of endomycorrhizal fungi are consistent with these fungi obtaining phosphorus from these surfaces. These fungi appear to be important in plant colonization of these dunes and could have appliction in revegetaton of disturbed areas.
58 citations
TL;DR: On the basis of the structural attributes of the heathlands, and the maintenance of several obligate seed regenerator species, a minimum fire-free interval of 8 or 10 years is suggested for subtropical heaths.
Abstract: Six heathland sites were studied in Cooloola National Park, south-eastern Queensland Vegetation composition (species present and numbers) and structure (plant density, cover, height and vertical foliage density) were examined at each site with respect to time since last fire (05-105 years) and the two recognised microhabitat types (dry and wet) No significant change in species numbers or composition was detected in sites more than 1 year after fire, although the changing physical status (density and cover) of some plants could give the impression of species being 'lost' or 'gained' over time On the basis of the structural attributes of the heathlands, and the maintenance of several obligate seed regenerator species, a minimum fire-free interval of 8 or 10 years is suggested for subtropical heathlands Results from this study are compared with data collected from other Australian heathlands In composition and structure, the temporal responses to fire in the Cooloola heathlands are similar to those in southern heathlands, albeit occurring at a possibly faster rate
35 citations
TL;DR: The Cooloola sand dunes are part of a series of aeolian parabolic dunes that stretch along the east coast of Australia and have been considered in a regional context as mentioned in this paper.
35 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2020 | 2 |
| 2018 | 1 |
| 2017 | 1 |
| 2015 | 1 |
| 2011 | 1 |
| 2006 | 2 |