Post-wildfire seedling colonisation patterns in a Eucalyptus delegatemsis (Myrtaceae) windthrow site at Snowy Rover National Park, Victoria
- Authors: Florentine, Singarayer , Westbrooke, Martin , Milberg, Per , Gibson, Matthew
- Date: 2008
- Type: Text , Journal article
- Relation: Australian Forestry Vol. 71, no. 1 (2008), p. 48-53
- Full Text:
- Reviewed:
- Description: During June 1998, a severe windstorm caused significant damage to a sub-alpine stand of Eucalyptus delegatensis (Myrtaceae) at the Snowy River National Park. In 2002, about 4.5 y after the windstorm, a study documented the effects on E. delegatensis and early understorey succession. In February 2003, wildfire burnt across the windthrow site and we examined the seedling recruitment patterns at windthrow–burn and burn-only sites. Our aim was to document the regeneration of the canopy-dominant E. delegatensis and to confirm that Acacia dealbata is a pioneer species that potentially interferes with or prevents regeneration of E. delegatensis. Permanent transects were established within the windthrow–burn and burn-only sites. The data suggest that the heavily disturbed (mounded) soil at the windthrow site had a strong positive influence on regeneration of both species. By providing favourable growing conditions, the disturbed soil appears to have assisted seedling survival and subsequent growth of the E. delegatensis, despite competition from dense, concurrently established A. dealbata.
- Description: C1
Foster, Victoria sheet no.876 zone 7
- Date: 1943
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Carrajung, Victoria sheet no.871 zone 7
- Date: 1943
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Wonthaggi, Victoria sheet no.875 zone 7
- Date: 1930
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Korumburra, Victoria sheet no.869 zone 7
- Date: 1931
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Stockyard, Victoria sheet no.864 zone 7
- Date: 1941
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 38 x 47 cm.
- Description: Scale: 1:63,360
Bairnsdale, Victoria sheet no.854 zone 7
- Date: 1942
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Alberton, Victoria sheet no.877 zone 7
- Date: 1942
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Sale, Victoria sheet no.863 zone 7
- Date: 1936
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Western Port, Victoria sheet no.868 zone 7
- Date: 1939
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Rosedale, Victoria sheet no.862 zone 7
- Date: 1939
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Stradbroke, Victoria sheet no.872 zone 7
- Date: 1942
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 71 x 47 cm.
- Description: Scale: 1:63,360
Drouin, Victoria sheet no.860 zone 7
- Date: 1932
- Type: Map
- Relation: Centre for Gippsland Studies Maps
- Full Text: false
- Description: Original format: 48 x 44 cm.
- Description: Scale: 1:63,360
Development of a cylindrical polar coordinates shallow water storm surge model for the coast of Bangladesh
- Authors: Paul, Gour , Murshed, Manzur , Haque, Rabiul , Rahman, Mizanur , Hoque, Ashabul
- Date: 2017
- Type: Text , Journal article
- Relation: Journal of coastal conservation Vol. 21, no. 6 (2017), p. 951-966
- Full Text: false
- Reviewed:
- Description: The coast of Bangladesh is funnel shaped. The narrowing of the Meghna estuary along with its peculiar topography creates a funneling effect that has a large impact on surge response. In order to have an accurate estimation of surge levels, the impacts of the estuary should be treated with due importance. To represent in detail the real complexities of the estuary, a very high resolution is required, which in turn necessitates more computational cost. Considering the facts into account, a location specific vertically integrated shallow water model in cylindrical polar coordinates is developed in this study to foresee water levels associated with a storm. A one-way nested grid technique is used to incorporate coastal complicities with minimum cost. In specific, a fine mesh scheme (FMS) capable of incorporating coastal complexities with acceptable accuracy is nested into a coarse mesh scheme (CMS) covering up to 15°N latitude in the Bay of Bengal. The coastal and island boundaries are approximated through appropriate stair step representation and the model equations are solved by a conditionally stable semi-implicit finite difference technique using a structured C-grid. Numerical experiments are performed using the model to estimate water levels due to surge associated with the April 1991 and AILA, 2009 cyclones, which struck the coast of Bangladesh. Time series of tidal level is generated from an available tide table through a cubic spline interpolation method. The computed surge response is superimposed linearly with the generated time series of tidal oscillation to obtain the time series of total water levels. The model results exhibit a good agreement with observation and reported data.
Effect of slope position on soil properties and soil moisture regime of Stagnosol in the vineyard
- Authors: Magdić, Ivan , Safner, Toni , Rubinić, Vedran , Rutić, Filip , Husnjak, Stjepan , Filipović, Vilim
- Date: 2022
- Type: Text , Journal article
- Relation: Journal of Hydrology and Hydromechanics Vol. 70, no. 1 (2022), p. 62-73
- Full Text:
- Reviewed:
- Description: Hillslope hydrology in agricultural landscapes is complex due to a variety of hydropedological processes and field management possibilities. The aim was to test if there are any differences in soil properties and water regime along the hillslope and to compare vineyard rows (vine) with inter-rows (grass) area for those properties. The study determined that there are significant differences in the contents of soil particle fractions, pH, and humus content along the slope ( < 0.0001), with lower confidence level in bulk density < 0.05). Differences between row and inter-row space were significant for the pH, humus, and silt content, but for sand and clay content, and bulk density differences were not determined. The study determined differences in soil water content among five slope positions ( < 0.0001), and between row and inter-row vineyard space (all with < 0.05). Where in the upper slope positions (e. g., P1) soil water content was higher than on lower slope positions. Higher soil water content was observed at higher slope positions, associated with clay content. However, it can be concluded that the retention of moisture on the slope is more influenced by local-scale soil properties (primarily soil texture) and variability of the crop (row/inter-row) than the position on the slope.