Journal articles on the topic 'Forest fires Victoria Daylesford'

Research highlights—Feedbacks between fire severity, vegetation structure and ecosystem flammability are understudied in highly fire-tolerant forests that are dominated by epicormic resprouters. We examined the relationships between the severity of two overlapping fires in a resprouting eucalypt forest and the subsequent effect of fire severity on fuel structure. We found that the likelihood of a canopy fire was the highest in areas that had previously been exposed to a high level of canopy scorch or consumption. Fuel structure was sensitive to the time since the previous canopy fire, but not the number of canopy fires. Background and Objectives—Feedbacks between fire and vegetation may constrain or amplify the effect of climate change on future wildfire behaviour. Such feedbacks have been poorly studied in forests dominated by highly fire-tolerant epicormic resprouters. Here, we conducted a case study based on two overlapping fires within a eucalypt forest that was dominated by epicormic resprouters to examine (1) whether past wildfire severity affects future wildfire severity, and (2) how combinations of understorey fire and canopy fire within reburnt areas affect fuel properties. Materials and Methods—The study focused on ≈77,000 ha of forest in south-eastern Australia that was burnt by a wildfire in 2007 and reburnt in 2013. The study system was dominated by eucalyptus trees that can resprout epicormically following fires that substantially scorch or consume foliage in the canopy layer. We used satellite-derived mapping to assess whether the severity of the 2013 fire was affected by the severity of the 2007 fire. Five levels of fire severity were considered (lowest to highest): unburnt, low canopy scorch, moderate canopy scorch, high canopy scorch and canopy consumption. Field surveys were then used to assess whether combinations of understorey fire (<80% canopy scorch) and canopy fire (>90% canopy consumption) recorded over the 2007 and 2013 fires caused differences in fuel structure. Results—Reburn severity was influenced by antecedent fire severity under severe fire weather, with the likelihood of canopy-consuming fire increasing with increasing antecedent fire severity up to those classes causing a high degree of canopy disturbance (i.e., high canopy scorch or canopy consumption). The increased occurrence of canopy-consuming fire largely came at the expense of the moderate and high canopy scorch classes, suggesting that there was a shift from crown scorch to crown consumption. Antecedent fire severity had little effect on the severity patterns of the 2013 fire under nonsevere fire weather. Areas affected by canopy fire in 2007 and/or 2013 had greater vertical connectivity of fuels than sites that were reburnt by understorey fires, though we found no evidence that repeated canopy fires were having compounding effects on fuel structure. Conclusions—Our case study suggests that exposure to canopy-defoliating fires has the potential to increase the severity of subsequent fires in resprouting eucalypt forests in the short term. We propose that the increased vertical connectivity of fuels caused by resprouting and seedling recruitment were responsible for the elevated fire severity. The effect of antecedent fire severity on reburn severity will likely be constrained by a range of factors, such as fire weather.

Eleven stream stations within the basins of the Bemm, Cann, Thurra, Wingan and Genoa Rivers were sampled during a 3-month interval following a prolonged drought and intense and extensive forest fires. Emphasis was placed on flows resulting from three major storms that occurred during this period. Water-quality impacts of the fires were intermingled with those of the preceding drought, and flow- related comparisons with pre-drought data showed appreciable increases in colour, turbidity, suspended solids, potassium and nitrogen levels in the Bemm River, which was only marginally affected by the fires. In the Cann and Genoa Rivers, with much larger proportions of catchment burnt, electrical conductivity and phosphorus concentrations also rose substantially. Marked depletion of dissolved oxygen (to <6 mg I-1) was unique to streams with burnt catchments, but resulted from stagnant conditions at the end of the drought as well as from changes occurring at the time of the first post-fire storm. The fires had little obvious effect on temperature and pH regimes. Peak turbidities and concentrations of suspended solids and phosphorus were much greater in the Cann and Genoa river systems than elsewhere. Maximum values for these indicators were 130 NTU, 2300 mg I-1 and over 0.8 mg I-1, respectively. In the Thurra and Wingan basins, which were also burnt, stream suspended-solids levels were lower (<200 mg I-1), but solutes sometimes reached very high maxima (indicated by peak electrical conductivities of up to 110 mS m-1). Variations in catchment topography and soils and the relative importance of surface and subsurface flow probably account for these differences. The first post-fire storm produced the highest measured levels of many indicators in most streams, although the greatest flows were associated with the third storm. Nitrite and ammonia were notable exceptions to this generalization. Estimates of catchment exports indicated high sediment yields and moderate to high phosphorus yields from the Cann and Genoa catchments, by comparison with other Australian data.

The Wombat Fire Effects Study was established to address a number of questions in relation to the effects of repeated low-intensity fires in mixed species eucalypt forest in the foothills of Victoria. This study has now been going for 25 years and has included the study of understorey plants, fuels, bats, terrestrial mammals, reptiles, invertebrates, fungi, birds, soils, tree growth, fire behaviour and weather. This forest system has shown a high resilience to fire that is attributed here to the patchiness and variability in the fire characteristics within a fire and the relatively small proportion of the landscape being affected. A means of comparing the level of “injury” caused by low-intensity prescribed fire with high intensity wildfire is proposed so that the debate about leverage benefits (the reduction in wildfire area compared to the area of planned burning) can be more rational. There are some significant implications for assessing the relative environmental impacts of wildfire compared with the planned burning program being implemented in Victoria since the Victorian Bushfires Royal Commission recommendations (Teague et al. 2010).

In 1949 the area of mature Eucalyptus regnans F.Muell1 (the Big Ash) on the Hume Range, Victoria, was a largely even-aged 230-year-old forest with a component of the overstorey derived from a fire in 1851. Subsequent fires have resulted in patchy regeneration where suitable gaps in the overstorey were present. In 1949 three main types of the understorey were present: type A, mature Pomaderris aspera; type B, dense immature Pomaderris aspera; and type C, coppiced Olearia argophylla and Bedfordia arborescens. In type A, ground fern was patchy and statistically correlated with patches of lower density Pomaderris aspera. Over a period of 48 years the eucalypt overstorey has been depleted by death and windthrow while understorey trees and shrubs have been severely damaged by sporadic heavy snowfalls and insect and fungal attack. The type A understorey is now showing signs of changing to Olearia argophylla dominance and the cover of ground fern and tree fern strata has doubled to more than 80% over this period in spite of damage caused by infrequent, but severe, droughts. The type B understorey is now mature and resembles type A, while the type C understorey shows invasion by Pomaderris aspera and regeneration of Olearia argophylla. No successful establishment of E. regnans has occurred. The rainforest in the gullies consists of alternating patches of forest and tree fern groves, the latter, together with rotting logs and upthrown root balls, providing niches for rainforest tree establishment. In swampy flats of Leptospermum grandifolium on the plateau Atherosperma moschatum is becoming increasingly dominant. Atherosperma moschatum is also invading mature understorey adjacent to riparian communities. This species and Olearia argophylla may constitute the final stage of the long secondary succession after fire in the Big Ash area. However, the Hume Range is adjacent to drier foothills and plains to the north, west and south. Whether the Big Ash will be spared from fire in future centuries is very doubtful.

The spring and summer of 2019–2020 (Black Summer) saw the largest and most significant bushfire outbreak recorded in eastern Australia. In Victoria, the fires ran from mid-November through early autumn. In this paper, we use a high-spatial and temporal resolution 48-year fire weather re-analysis data set (VicClim5) to describe fire weather and vertical wind and stability profiles for five significant high Forest Fire Danger Index (FFDI) fire events and compare these with detailed fire reconstructions. A feature of several of these fires was very active overnight fire spread driven by topographically enhanced low-level jets and low fine fuel moisture content. The FFDI values on these nights were either the highest or near highest on record in the 48-year data set. We describe cases of lightning ignition, prefrontal fire spread and two cases of post-frontal fire spread – one into Mallacoota on the early morning of 31 December 2019 and the other a northward overnight run down the Buffalo Valley on 4–5 January 2020. On two of the days studied there were complex wind changes associated with the inland penetration of low-level south-easterly winds under the influence of locally generated pressure gradients. An elevated hot, dry mixed layer above these shallow layers also played an important role. On one occasion there is some evidence of possible mountain-wave modulation of surface wind flows. These events demonstrate a range of features of the fire weather and climate in eastern Victoria and the utility of VicClim5 in 3-dimensional climatological analyses.

Extensive and recurrent severe wildfires present complex challenges for policy makers. This is highlighted by extensive wildfires around the globe, ranging from western North America and Europe to the Amazon and Arctic, and, most recently, the 2019–2020 fires in eastern Australia. In many jurisdictions, discussions after significant losses of life, property, and vegetation are sometimes conducted in the absence of nuanced debates about key aspects of climate, land, and resource management policy. Improved insights that have significant implications for policies and management can be derived from spatial and temporal analyses of fires. Here, we demonstrate the importance of such analyses using a case study of large-scale, recurrent severe wildfires over the past two decades in the Australian state of Victoria. We overlaid the location of current and past fires with ecosystem types, land use, and conservation values. Our analyses revealed 1) the large spatial extent of current fires, 2) the extensive and frequent reburning of recently and previously fire-damaged areas, 3) the magnitude of resource loss for industries such as timber and pulplog production, and 4) major impacts on high conservation value areas and biodiversity. These analyses contain evidence to support policy reforms that alter the mode of forest management, target the protection of key natural assets including unburnt areas, manage repeatedly damaged and potentially collapsed ecosystems, and expand the conservation estate. Our mapping approach should have applicability to other environments subject to large-scale fires, although the particular details of policy reforms would be jurisdiction, ecosystem, and context specific.

Bushfire threat was evaluated for built structures for three areas in Victoria (Australia) that had been impacted by the devastating 16 February 1983 Ash Wednesday fires. Structures were mapped for 1982 and 2006 using human interpretation of high-resolution (0.35-m pixels) digital orthophotographs. Damage to structures from the 1983 Ash Wednesday fires was also evaluated using human interpretation of the digital orthophotographs. Approximately 25% of the structures present were not mapped due to either interpreter error or overhanging vegetation. The majority of unmapped structures were sheds and garages. The error of omission for houses was between 7 and 10% with the error of commission for houses being less than 0.5%. Bushfire threat was modelled using information about topographic slope and aspect, forest vegetation, and prevailing wind direction during days of high fire danger. The method detected a substantial change in bushfire threat from 1982 to 2006 for one of the three study sites whereas no change in overall bushfire threat was observed for the other two. Considering the location of structures built since 1982, these results appeared reasonable. However, the 1982 bushfire threat was not related to actual structure damage sustained during the 1983 Ash Wednesday fires. Estimating bushfire threat using this methodology cost AU$6 per structure or AU$4.60 per property.

With the increase of extreme weather conditions in the world, the probability of forest fires is increasing. How the forest fire management decision-making system can monitor and control the fire quickly and effectively is the key of forest fire fighting work. This paper uses SSA drones carrying high-definition and thermal imaging cameras and telemetry sensors in conjunction, as well as Repeater drones used to greatly expand the frontline low-power radio range, to support fire management decision-making systems. At the same time, explore a drone cooperation plan to deal with different fire terrains and different scales of fire conditions. The aim of this paper is to improve the existing fire management decision system in order to quickly respond to the emergency fire. Research object for the Australian state of Victoria on October 1, 2019 to January 7, 2020 wildfires, explore SSA drones and Repeater drones in the application of the forest fire, ensure that fire management decision-making system to provide the optimal number deployment scheme of fire task quickly and efficiently, and achieve the maximum efficiency and economic optimal compatibility.

In temperate Australia, wildfires are predicted to be more frequent and severe under climate change. This could lead to marked changes in tree mortality and regeneration in the region’s predominant eucalypt forests, which have been burned repeatedly by extensive wildfires in the period 2003–14. Recent studies have applied alternative stable state models to select ‘fire sensitive’ forest types, but comparable models have not been rigorously examined in relation to the more extensive ‘fire tolerant’ forests in the region. We review the effects of increasing wildfire frequency on tree mortality and regeneration in temperate forests of Victoria, south-eastern Australia, based on the functional traits of the dominant eucalypts: those that are typically killed by wildfire to regenerate from seed (‘obligate seeders’) and those that mostly survive to resprout (‘resprouters’). In Victoria, over 4.3 million ha of eucalypt forest has been burned by wildfire in the last decade (2003–14), roughly equivalent to the cumulative area burned in the previous 50 years (1952–2002; 4.4 million ha). This increased wildfire activity has occurred regardless of several advancements in fire management, and has resulted in over 350 000 ha of eucalypt forest being burned twice or more by wildfire at short (≤11 year) intervals. Historical and recent evidence indicates that recurrent wildfires threaten the persistence of the ‘fire sensitive’ obligate seeder eucalypt forests, which can facilitate a shift to non-forest states if successive fires occur within the trees’ primary juvenile period (1–20 years). Our review also highlights potential for structural and state changes in the ‘fire tolerant’ resprouter forests, particularly if recurrent severe wildfires kill seedlings and increase tree mortality. We present conceptual models of state changes in temperate eucalypt forests with increasing wildfire frequency, and highlight knowledge gaps relating to the development and persistence of alternative states driven by changes in fire regimes.

High frequency wildfires can shift the structure and composition of obligate seeder forests and initiate replacement with alternative vegetation states. In some forests, the alternative stable state is drier and more easily burned by subsequent fires, driving a positive feedback that promotes further wildfire and perpetuates alternative stable states. Mountain Ash (Eucalyptus regnans (F.Muell.)) forests are highly valued for their biodiversity, water, timber and carbon. Fires are a natural part of the lifecycle of these forests, but too frequent fires can eliminate Mountain Ash and trigger a transition to lower stature, non-eucalypt forests which are dominated by understorey species. This study sought to better understand the fuel moisture dynamics of alternative stable states resulting from high frequency wildfires. A vegetation mosaic in the Central Highlands, Victoria created a unique opportunity to measure fuel moisture in adjacent forest stands that differed in overstorey species composition and time since fire. Specifically, we measured fuel moisture and microclimate at two eucalypt sites (9 and 79 years old) and three non-eucalypt sites (two 9 year old and one 79 year old). Fuel availability, defined here as the number of days surface fuels were below 16% and dry enough to ignite and sustain fire, was calculated to estimate flammability. Fuel availability differed between sites, particularly as a function of time since fire, with recently burnt sites available to burn more often (4–17 versus 0–3 days). There were differences in fuel availability between non-eucalypt sites of the same age, suggesting that high frequency fire does not always lead to the same vegetation condition or outcome for fuel availability. This indicates there is potential for both positive and negative flammability feedbacks following state transition depending on the composition of the non-eucalypt state. This is the first study to provide empirical insight into the fuel moisture dynamics of alternative stable states in Mountain Ash forests.

Birds were studied at 57 sites in Mountain Ash forests in the Central Highlands of Victoria, Australia in spring and summer 1995/96. The sites represented 41 patches of old-growth forest (up to 390 ha in size) in a matrix of regrowth mostly from severe fires in 1939 (57 years previously), with multiple sites in the four largest patches of old-growth and eight sites in 1939 regrowth. Relative bird abundance was assessed by an area-search technique. Generalized linear modelling was used to develop predictive models by regressing abundance of groups of bird species against patch size, isolation and some basic habitat and context variables. Total bird abundance (of all species combined) tended to be higher in old-growth patches than in 1939 regrowth, but not significantly. There was no trend in total abundance with patch size or isolation. Fruit-eating birds tended to be commonest in small patches. Bark-foragers and uncommon birds favoured large patches, though the latter were most common in 1939 regrowth. More variation was explained by habitat and context variables such as aspect, altitude and forest structure. Unevenaged forest structure was often associated with small patches. It was concluded that old-growth forest patches can have similar values per hectare for forest birds whether they are large or small. The regrowth forest matrix appears to protect small patches from factors which reduce densities of forest birds in small forest patches in farmland. The data support the current policy of retaining all old-growth ash forest patches. A range of factors should be considered in selecting regrowth stands of various sizes to regrow as old forest of the future, including their intrinsic potential to develop particular habitats and produce a mix of forest stuctures in the landscape.

Abstract. Well-drained, aerated soils are important sinks for atmospheric methane (CH4) via the process of CH4 oxidation by methane-oxidising bacteria (MOB). This terrestrial CH4 sink may contribute towards climate change mitigation, but the impact of changing soil moisture and temperature regimes on CH4 uptake is not well understood in all ecosystems. Soils in temperate forest ecosystems are the greatest terrestrial CH4 sink globally. Under predicted climate change scenarios, temperate eucalypt forests in south-eastern Australia are predicted to experience rapid and extreme changes in rainfall patterns, temperatures and wild fires. To investigate the influence of environmental drivers on seasonal and inter-annual variation of soil–atmosphere CH4 exchange, we measured soil–atmosphere CH4 exchange at high-temporal resolution (< 2 h) in a dry temperate eucalypt forest in Victoria (Wombat State Forest, precipitation 870 mm yr−1) and in a wet temperature eucalypt forest in Tasmania (Warra Long-Term Ecological Research site, 1700 mm yr−1). Both forest soil systems were continuous CH4 sinks of −1.79 kg CH4 ha−1 yr−1 in Victoria and −3.83 kg CH4 ha−1 yr−1 in Tasmania. Soil CH4 uptake showed substantial temporal variation and was strongly controlled by soil moisture at both forest sites. Soil CH4 uptake increased when soil moisture decreased and this relationship explained up to 90 % of the temporal variability. Furthermore, the relationship between soil moisture and soil CH4 flux was near-identical at both forest sites when soil moisture was expressed as soil air-filled porosity (AFP). Soil temperature only had a minor influence on soil CH4 uptake. Soil nitrogen concentrations were generally low and fluctuations in nitrogen availability did not influence soil CH4 uptake at either forest site. Our data suggest that soil MOB activity in the two forests was similar and that differences in soil CH4 exchange between the two forests were related to differences in soil moisture and thereby soil gas diffusivity. The differences between forest sites and the variation in soil CH4 exchange over time could be explained by soil AFP as an indicator of soil moisture status.

Large old trees are critical structures in the Mountain Ash forests of the Central Highlands of Victoria. They perform many critical ecological and other roles. Populations of these trees are also in serious decline. A range of key management strategies is needed to arrest the decline of existing populations of large old trees and instigate population recovery. In particular all existing large old trees need to be properly protected with adequate buffers of uncut forest. In addition, all stands of old-growth forest, irrespective of their size, need to be protected to ensure they are not logged. The size of the old-growth estate also must be expanded so that it encompasses at least 30%‒50% of the distribution of Mountain Ash. Finally, the recruitment of new cohorts of large old trees is critically important to replace existing trees when they are lost. To achieve this, large areas of existing regrowth forest that regenerated after the 1939 fires need to be excluded from logging and grown through to an old-growth stage. Implementation of altered management in Mountain Ash forests is urgent, as delays in policies will exacerbate the decline of this significant population of large old trees in south-eastern Australia.

The extent and severity of bushfires in a landscape are largely governed by meteorological conditions. An accurate understanding of the interactions of meteorological variables and fire behaviour in the landscape is very complex, yet possible. In exploring such understanding, we used 2693 high-confidence active fire points recorded by a Moderate Resolution Imaging Spectroradiometer (MODIS) sensor for nine different bushfires that occurred in Victoria between 1 January 2009 and 31 March 2009. These fires include the Black Saturday Bushfires of 7 February 2009, one of the worst bushfires in Australian history. For each fire point, 62 different meteorological parameters of bushfire time were extracted from Bureau of Meteorology Atmospheric high-resolution Regional Reanalysis for Australia (BARRA) data. These remote sensing and meteorological datasets were fused and further processed in assessing their relative importance using four different tree-based ensemble machine learning models, namely, Random Forest (RF), Fuzzy Forest (FF), Boosted Regression Tree (BRT), and Extreme Gradient Boosting (XGBoost). Google Earth Engine (GEE) and Landsat images were used in deriving the response variable–Relative Difference Normalised Burn Ratio (RdNBR), which was selected by comparing its performance against Difference Normalised Burn Ratio (dNBR). Our findings demonstrate that the FF algorithm utilising the Weighted Gene Coexpression Network Analysis (WGCNA) method has the best predictive performance of 96.50%, assessed against 10-fold cross-validation. The result shows that the relative influence of the variables on bushfire severity is in the following order: (1) soil moisture, (2) soil temperature, (3) air pressure, (4) air temperature, (5) vertical wind, and (6) relative humidity. This highlights the importance of soil meteorology in bushfire severity analysis, often excluded in bushfire severity research. Further, this study provides a scientific basis for choosing a subset of meteorological variables for bushfire severity prediction depending on their relative importance. The optimal subset of high-ranked variables is extremely useful in constructing simplified and computationally efficient surrogate models, which can be particularly useful for the rapid assessment of bushfire severity for operational bushfire management and effective mitigation efforts.

Abstract. 2003 was a record year for wildfires worldwide. Severe forest fires killed four people, displaced 20 500 others and burnt 260 000 ha in South-East Australia in January 2003. The uncontrolled fires ignited in early January 2003 as a result of a prolonged El Niño drought in South-East Australia. Severe weather conditions resulted in a fast spread of the fires and poor air quality in a region where 70% of the population of Australia lives. We use state-of-art global chemistry and transport model GEOS-Chem in conjunction with ground- and space-based observations to study the ozone (O3) and aerosol enhancement due to fires. Firstly, the monthly mean surface O3 and Aerosol Optical Depth (AOD) in January 2003 are compared to January 2004 and, secondly, from sensitivity model simulations, four episodes are isolated and an attempt is made to quantify the contribution of the fires to air quality in south and South-East Australia. In January 2003 the observed monthly mean afternoon surface O3 in Victoria (VIC) and South Australia (SA) reached 27.5 ppb, which is 6.5 ppb (i.e. 30%) higher than in 2004. The simulated O3 is 29.5 ppb, which is 10 ppb higher than in 2004. While the model tends to overestimate the observed peak O3, it exhibits very good skill in reproducing the O3 temporal variability in January 2003 with a correlation of 0.83. In VIC, the air quality 4-h ozone (O3) standard exceedences are reported on 17, 24 and 25 January. On 12, 17, 24–25 and 29 January 2003, the observed O3 peaks above 40 ppb and the simulated fire contribution is higher than 10 ppb. During these 4 episodes, the range of observed O3 enhancement due to fires is 20–35 ppb, which is a factor of 3 to 5 higher than the monthly mean. The simulated fire O3 enhancement is in the range 15–50 ppb with a factor of 1.5 to 5 higher than the monthly mean. During two episodes, a well-formed surface wind channel stretches across the Tasman Sea facilitating the long range transport to New Zealand contributing to a 10% increase of surface O3. During the four episodes in January 2003, the observed AOD was up to a factor of five higher that the monthly mean AOD. The simulated and observed AODs agree on the spatial structure. Despite the model tendency to underestimate the AOD, it proves a useful tool in reconstructing the mostly patchy observations.

This is the first in a series of 13 papers about the safety and productivity of firefighters suppressing wildland fires ('bushfires' in Australia) with hand tools, with particular emphasis on their physiological and subjective responses and the factors that influence them. The measurements were made during a broader investigation to determine the most intense fire that could be suppressed by hand tools, by bulldozers, and by air tankers. The investigation was carried out during three successive summers in dry eucalypt forests of Western Australia and Victoria. Four crews, each of 7 or 8 male firefighters, were studied while they attempted, for periods of 35-220 minutes, to suppress well-developed experimental bushfires with hand tools, and also while they built fireline in the same way without fire. Additional studies were made under controlled conditions: outdoors in the forest, indoors in field laboratories, and in a climatic chamber in Sydney. Most of the measurements were also made on the scientific observers, who shared the firefighters' environment but performed less strenuous work. All findings were highly consistent over the four crews, three summers, and two States and are thus generally applicable to bushfire suppression with hand tools in southern Australia.

Abstract. This study investigates the use of Advanced Land Observing Satellite 2 (ALOS-2) equipped with an enhanced L-band SAR sensor imagery alongside with Landsat-8 optical sensor in detection and mapping of burnt and unburnt scars occurring after a bushfire in Victoria, Australia. The bushfires had recently occurred in the period of 2018–2019. The analysis was explored using a contextual classifier Support Vector Machine (SVM), as SVM allows us to integrate spectral information and spatial context through the optimal smoothing parameter without degrading image quality. The training and test set datasets consisting of burnt and unburnt pixels were created from Landsat-8 scenes used as reference data. The backscatter intensity maps (acquired before and after the forest fires) from ALOS-2 data were compared and investigated, with a special concern on topographic influence removal. The dual polarizations (HH and HV) have been used to improve the forest fire mapping capability. These change detection techniques were based on image feature differences, index calculation such as normalized burn ratio. The burnt area and unburnt area were then classified via a threshold given by the pre- and post- disaster differences. The classification result achieved an accuracy of 80% Landsat-8 and 89% ALOS-2. This result shows the limitations of burnt area mapping with ALOS-2 due to effect local incidence angle and topography were of greater impact resulting in shadows. Nevertheless, the results in both areas verify the use of satellite SAR sensors and optical in forestry application.

Most of the life and property losses due to bushfires in south-eastern Australia occur under extreme fire weather conditions – strong winds, high temperatures, low relative humidity (RH) and extended drought. However, what constitutes extreme, and the values of the weather ingredients and their variability, differs regionally. Using a gridded dataset to identify the highest 10 fire weather days from 1972 to 2012, as defined by McArthur’s Forest Fire Danger Index (FFDI), for 24 sites across Victoria and nearby, we analyse the extent and variability of these highest 10 FFDI days, and of the contributing temperature, RH, wind speed, wind direction and drought indices. We document the occurrence of these events by time of day, month of occurrence and inter-annual variability. We find there is considerable variability among regions in the highest FFDI days and also the contributing weather and drought parameters, with some regional groupings apparent. Many major fire events occurred on these highest 10 fire weather days; however there are also days in which extreme fire weather occurred yet no known major fires are recorded. The results from this study will be an additional valuable resource to fire agencies in fire risk planning by basing fire management decisions on site-specific extreme fire weather conditions.

Fire management agencies use fire behaviour simulation tools to predict the potential spread of a fire in both risk planning and operationally during wildfires. These models are generally based on underlying empirical or quasi-empirical relations and rarely are uncertainties considered. Little attention has been given to the quality of the input data used during operational fire predictions. We examined the extent to which error in weather forecasts can affect fire simulation results. The study was conducted using data representing the State of Victoria in south-eastern Australia, including grassland and forest conditions. Two fire simulator software packages were used to compare fire growth under observed and forecast weather. We found that error in the weather forecast data significantly altered the predicted size and location of fires. Large errors in wind speed and temperature resulted in an overprediction of fire size, whereas large errors in wind direction resulted in an increased spatial error in the fire’s location. As the fire weather intensified, fire predictions using forecast weather under predicted fire size, potentially resulting in greater risks to the community. These results highlight the importance of on-ground intelligence during wildfires and the use of ensembles to improve operational fire predictions.

The Late Oligocene to Mid-Miocene (25–13 million years ago) brown coals of the Gippsland Basin in southern Victoria, Australia, were deposited in peat mega-swamps, unlike any in the world at the present day. The swamps preserve a rich botanical suite of macro- and microfossils, many of which can be identified with plant genera and families present today in Australia, New Caledonia, New Zealand and New Guinea. The peat-forming environments also preserve evidence of past burning in the form of micro-charcoal as well as macro-charcoal, the latter being evident as regional lenses or layers of fusinite, generally in coals of the darkest colour termed dark lithotypes. The presence of micro-charcoal in dark and some other lighter lithotypes indicated that fires also burnt locally, although they may have been extinguished before regional-scale burning occurred. It is also feasible that some peat mega-swamp plant communities dominated by rainforest angiosperm plants may have been fire excluders and prevented widespread fires from developing. Pollen and macrofossil evidence is presented of a distinctive southern conifer and angiosperm flora with an open canopy, primarily associated with the darkest coals that formed in the wettest parts of the peat-forming environment. Elsewhere, swamp forests with a large rainforest component grew on swamps raised appreciably above the regional groundwater table in a structural context akin to the ombrogenous peats of tropical coastal Sumatra and Sarawak. These vegetation types were not fire prone, but may have occasionally burnt at a local scale or at forest margins. Evidence is presented for the existence of seasonal climatic conditions that would appear to have facilitated a drying-out of the peat swamps in the warmest months of the year. A mesothermal climate was invoked where mean annual precipitation was at least 1500 mm, and possibly as much as 2000 mm, and mean annual temperatures were ~19°C.

Many invasive species have had negative effects on the Australian environment, including the introduced Sambar Deer (Rusa unicolor). However, there is a paucity of information on the factors influencing the fine scale distribution and abundance patterns of Sambar Deer in south-eastern Australia. We present the results of a field survey of Sambar Deer in the Critically Endangered Mountain Ash ( Eucalyptus regnans) forests of the Central Highlands, Victoria. Our key question was: What factors influence detections of Sambar deer (based on scat counts) within the Mountain Ash forests of the Victorian Central Highlands? We surveyed 86 long-term field sites and detected a total of 245 groups of Sambar Deer pellets on 42% of these sites. Negative binomial regression modelling identified three factors associated with the occurrence of deer pellets. We recorded more pellets: (1) in 30 and 80 year old forest that remained unburned in fires that occurred in 2009, (2) on sites within closed National Parks relative to sites in State Forest, and (3) close to streams.

ABSTRACT Fire can have marked impacts on biodiversity and on ecosystem condition. However, it is the sequence of multiple fires over a prolonged period of time which can have the most marked effects on biodiversity and on ecosystem condition. A good understanding of these effects comes from long-term studies. In this article we outline some of the key perspectives on the effects of fire on ecosystems and biodiversity from two large-scale, long-term monitoring studies in south-eastern Australia. These are studies in the montane ash forests of the Central Highlands of Victoria and at Booderee National Park in the Jervis Bay Territory. These studies have shown that the effects of fires are strongly influenced by: (1) The condition of an ecosystem before a fire (e.g. the age of a forest at the time it is burnt). (2) Conditions after the fire such as the extent of herbivory in regenerating vegetation and whether the ecosystem is subject to post-fire (salvage) logging. (3) Fire history (e.g. the number of past fires and the time since the previous fire). And, (4) Interactions between fire and other ecosystem drivers such as logging. We discuss some of the key implications for conservation and resource management that arise from these studies including the need to: (a) Reduce the number of stressors in some ecosystems to facilitate post-fire recovery. (b) Recognize that pre-fire human disturbances can elevate fire severity in some forest ecosystems, with corresponding negative effects on elements of the biota, and, (c) Acknowledge the inherent patchiness of wildfires and the value of unburnt areas and places burnt at low severity as critical refugia for some species; it is critical that these locations are managed accordingly (e.g. by limited additional disturbances within them). Finally, many of the insights discussed in this article have emerged only through long-term studies. More long-term monitoring and research is needed to truly understand and better manage fire in Australian ecosystems.

Birds are high profile elements of the vertebrate biota in almost all terrestrial ecosystems worldwide. Many studies have uncovered evidence of a decline in bird biodiversity, but temporal patterns of change vary among ecosystems and among bird species with different life history traits. Ecosystem-specific, long-term studies are critical for identifying patterns of temporal change in bird biodiversity and the drivers of that change. Here we present a case study of drivers of temporal change in the bird fauna of the Mountain Ash and Alpine Ash eucalypt forests of south-eastern Australia. Using insights from observational studies and experiments conducted over the past 18 years, we discuss the direct and interactive effects of fire and logging on birds. The extent and severity of wildfires have major negative effects on almost all bird species, and have persisted for more than a decade after the last major conflagration (in 2009). Logging has markedly different effects on birds than those quantified for fire, and may have resulted in elevated levels of site occupancy in remaining uncut areas in the landscape. Both fire and logging have led to marked losses in the extent of old growth forest in Mountain Ash and Alpine Ash ecosystems. This is a concern given the strong association of most species of birds with old forest relative to younger age cohorts. Based on an understanding of the effects of fire and logging as drivers of change, we propose a series of inter-related management actions designed to enhance the conservation of avifauna in Mountain Ash and Alpine Ash ecosystems. A particular focus of management must be on increasing the interval between fires and limiting the spatial extent of wildfires and, in turn, significantly expanding the extent of old growth forest. This is because old growth forest is where most bird species are most likely to occur, and in the event of future wildfires, where fire severity will be lowest. Expansion of the old growth estate will require commercial logging operations to be excluded from large parts of Mountain Ash and Alpine Ash forests.

ABSTRACT The catastrophic 2009 wildfires in the Mountain Ash (Eucalyptus regnans) forests of the Central Highl&s of Victoria provided an opportunity to gain new insights into the responses to fire by various elements of the biota. Ongoing long-term monitoring at a large number of permanent field sites for up to 25 years prior to the fire, together with 10 years of post-fire monitoring, has provided an unparalleled series of datasets on mammal, bird, & plant responses on burned & unburned sites. The empirical studies briefly summarized in this paper show patterns of steep declines in large old trees & declines in site occupancy by arboreal marsupials & birds. These changes contrast markedly with the responses of the two most common species of small mammals (the Agile Antechinus [Antechinus agilis] & Bush Rat [Rattus fuscipes]), which recovered within two generations after the fire. Declines in arboreal marsupials, birds & large old trees have also occurred on unburned sites, indicating an ecosystem-wide trend. In general, logging had a greater impact than fire on the majority of groups of birds & plants, particularly post-fire salvage logging that occurred in some areas following the 2009 wildfires. Beyond interactions between fire & post-fire (salvage) logging & their effects on forest biota, we have uncovered evidence of other kinds of interactions in Mountain Ash forests. These include interactions between: (1) the severity of fires & logging history, (2) post-fire bird population recovery & long-term climate & short-term weather conditions, & (3) impacts on forest soils. The structure & l&scape composition of the Mountain Ash ecosystem has been radically altered over the last century. This has resulted from the combined impact of several large fires, including the 2009 fires as well as widespread clearfell logging that has been conducted within state forests over the last 50 years. The ecosystem now supports old growth cover that is 1/30th to 1/60th of what it was estimated to have been prior to European settlement. The ongoing decline of key components of the Mountain Ash ecosystem has led to it being classified as Critically Endangered & at high risk of ecosystem collapse. We argue that current forest policy & practices need to better mitigate the effects of fire on this already highly disturbed forest & enhance the possible persistence of species in this ecosystem. Several key strategies are required to do this. First, there is a need to significantly exp& the extent of old growth within the Mountain Ash forest estate. This is because fire severity is diminished in such areas. Spatial contagion across old-growth dominated l&scapes also may be suppressed relative to l&scapes composed primarily of young forest. Allied management strategies include the protection of more mesic parts of Mountain Ash l&scapes as these are less likely to burn or at least burn at high severity. Such enhanced protection should include an exp&ed network of buffers around drainage lines & waterways as these are where fire severity is likely to be lowest & also where old growth elements like large old hollow-bearing trees are more abundant. In addition, all existing living & dead hollow-bearing trees need to be protected by buffers of unlogged forest within wood production forests to promote their st&ing life & better conserve cavity-dependent fauna such as the Critically Endangered Leadbeater’s Possum (Gymnobelideus leadbeateri) & other declining taxa like the Greater Glider (Petauroides volans).

ABSTRACT Aubrey Elliott (1910–1943), a passionate ‘bird-man’, lived in the suburb of Tapitallee on the south coast of New South Wales until 1940. During that period he and his brother, Arthur kept notes on the birds in the local area and devised a hide that was mounted on a utility that enabled them to take close-up photographs. To augment his observations Elliott interviewed local residents and collated information on the status of the area’s birds. In 1985 I purchased the property next to where Elliott lived and was given access to his notes. This paper presents a comparison of avifauna in the Tapitallee area between 1926–40 and 1985–2020. During that time there have been changes in the distribution and abundance of many birds. Fourteen species have become locally extinct while 28 have colonised/recolonised the area. Combining Aubrey’s and our data a total of 194 species of bird have been recorded in the area. Dams have been constructed and native vegetation has regrown on the steeper slopes. These actions have expanded the habitat for aquatic and forest dependant species but disadvantaged those that occupy grasslands. The Red Fox Vulpes vulpes colonised the area in 1907 and is implicated in the local extinction of the Bush Stone Curlew Burhinus grallarius. Wildfire in January 2020 burnt a relatively small portion of the Tapitallee area but these fires burnt an extensive area of southern NSW and Victoria. These fires were likely to be responsible for the decline in the numbers of Yellow-faced Honeyeaters Caligavis chrysops and White-naped Honeyeater Melithreptus lunatus migrating north in the autumn of that year.

Old growth is a critical growth stage in many forest types globally. It has many key ecological roles including biodiversity conservation, carbon storage and the provision of services such as water production. The extent of old growth forest has been declining in many ecosystems around the world, with major ecological and ecosystem service consequences. Important insights about such declines, as well as the structure, function and conservation of old growth forest, can be gained from detailed cross-sectional and longitudinal studies of different age cohorts within a given forest ecosystem. In this review article, we outline key insights into the characteristics of, and threats to old growth forests, using the Mountain Ash (Eucalyptus regnans) forests of the Central Highlands of Victoria, south-eastern Australia as a detailed case study. These forests are dominated by the tallest flowering plants on earth and have been subject to several decades of intense study. These studies show that old growth Mountain Ash forests are characterized by (among other features): giant trees (approaching 100 m tall and sometimes exceeding 20 m in circumference), numerous trees with hollows, an understorey of Acacia and rainforest trees, a range of plant and animal species that are rare or absent in younger aged stands, and moist, nutrient-rich soils. The area of old growth Mountain Ash forest has declined to 1.16% of the ∼141,000 ha area occupied by ash-type forests in the Central Highlands region. This is up to 60 times less than it was at the time of European colonization ∼220 years ago. The loss of old growth has major implications for bird, mammal and other biodiversity, as well as for carbon storage and water production for human consumption. The main drivers of old growth decline are recurrent wildfire, widespread clearcutting, and a logging-fire interaction in which cut and then regenerated forests become more flammable and are at significantly elevated risk of burning at high (stand replacing) severity. Climate change is also a driver of old growth decline both through elevating the mortality of large old living trees and underpinning an increase in the frequency of high severity wildfire. These interacting drivers mean that restoring old growth Mountain Ash forest will be an ecological and policy challenge. We argue that a first step must be to cease all commercial logging in the Mountain Ash ecosystem to allow new cohorts of old growth forest to be recruited and thereby expand the extent of the old growth estate. In addition, the Government of Victoria should revert to a past definition of old growth that made it easier for forest to qualify for protection. Given there are high risks of recurrent high-severity wildfire in the existing Mountain Ash forest estate which is dominated by highly flammable young regrowth forest, new technologies (such as the use of drones and satellites) are needed to rapidly detect and then suppress ignitions before fires become large and difficult to control. Mountain Ash forests have provided an important natural laboratory for understanding the dynamics, management and conservation of old growth forest. They have also helped generate some valuable general perspectives likely to be relevant to other forest ecosystems globally. These include: (1) the critical value of multi-facetted cross-sectional and longitudinal studies in quantifying attributes of, and threats to, old growth forest, (2) the need for a carefully crafted definition of old growth that will typically be ecosystem-specific and based on the time required to develop key ecosystem attributes (e.g., large old trees), (3) the importance of rigorous protection measures because poor decisions that result in the loss of old growth now will take prolonged periods to rectify, and (4) setting protection levels that are relative to the existing spatial coverage of remaining old growth and the extent and impacts of stressors driving old growth decline.

The Black Summer of 2019/2020 saw the forests of southeast Australia go up in flames. The fire season started early, in September 2019, and by March 2020 fires had burned over 12.6 million hectares (Werner and Lyons). The scale and severity of the fires was quickly confirmed by scientists to be “unprecedented globally” (Boer et al.) and attributable to climate change (Nolan et al.).The fires were also a media spectacle, generating months of apocalyptic front-page images and harrowing broadcast footage. Media coverage was particularly preoccupied by the cause of the fires. Media framing of disasters often seeks to attribute blame (Anderson et al.; Ewart and McLean) and, over the course of the fire period, blame for the fires was attributed to climate change in much media coverage. However, as the disaster unfolded, denialist discourses in some media outlets sought to veil this revelation by providing alternative explanations for the fires. Misinformation originating from social media also contributed to this obscuration.In this article, we investigate the extent to which media coverage of the 2019/2020 bushfires functioned both to precipitate a climate change epiphany and also to support refutation of the connection between catastrophic fires and the climate crisis.Environmental Communication and RevelationIn its biblical sense, revelation is both an ending and an opening: it is the apocalyptic end-time and also the “revealing” of this time through stories and images. Environmental communication has always been revelatory, in these dual senses of the word – it is a mode of communication that is tightly bound to crisis; that has long grappled with obfuscation and misinformation; and that disrupts power structures and notions of the status quo as it seeks to reveal what is hidden. Climate change in particular is associated in the popular imagination with apocalypse, and is also a reality that is constantly being “revealed”. Indeed, the narrative of climate change has been “animated by the revelations of science” (McNeish 1045) and presented to the public through “key moments of disclosure and revelation”, or “signal moments”, such as scientist James Hansen’s 1988 US Senate testimony on global warming (Hamblyn 224).Journalism is “at the frontline of environmental communication” (Parham 96) and environmental news, too, is often revelatory in nature – it exposes the problems inherent in the human relationship with the natural world, and it reveals the scientific evidence behind contentious issues such as climate change. Like other environmental communicators, environmental journalists seek to “break through the perceptual paralysis” (Nisbet 44) surrounding climate change, with the dual aim of better informing the public and instigating policy change. Yet leading environmental commentators continually call for “better media coverage” of the planetary crisis (Suzuki), as climate change is repeatedly bumped off the news agenda by stories and events deemed more newsworthy.News coverage of climate-related disasters is often revelatory both in tone and in cultural function. The disasters themselves and the news narratives which communicate them become processes that make visible what is hidden. Because environmental news is “event driven” (Hansen 95), disasters receive far more news coverage than ongoing problems and trends such as climate change itself, or more quietly devastating issues such as species extinction or climate migration. Disasters are also highly visual in nature. Trumbo (269) describes climate change as an issue that is urgent, global in scale, and yet “practically invisible”; in this sense, climate-related disasters become a means of visualising and realising what is otherwise a complex, difficult, abstract, and un-seeable concept.Unsurprisingly, natural disasters are often presented to the public through a film of apocalyptic rhetoric and imagery. Yet natural disasters can be also “revelatory” moments: instances of awakening in which suppressed truths come spectacularly and devastatingly to the surface. Matthewman (9–10) argues that “disasters afford us insights into social reality that ordinarily pass unnoticed. As such, they can be read as modes of disclosure, forms of communication”. Disasters, he continues, can reveal both “our new normal” and “our general existential condition”, bringing “the underbelly of progress into sharp relief”. Similarly, Lukes (1) states that disasters “lift veils”, revealing “what is hidden from view in normal times”. Yet for Lukes, “the revelation tells us nothing new, nothing that we did not already know”, and is instead a forced confronting of that which is known yet difficult to engage with. Lukes’ concern is the “revealing” of poverty and inequality in New Orleans following the impact of Hurricane Katrina, yet climate-related disasters can also make visible what McNeish terms “the dark side effects of industrial civilisation” (1047). The Australian bushfires of 2019/2020 can be read in these terms, primarily because they unveiled the connection between climate change and extreme events. Scorching millions of hectares, with a devastating impact on human and non-human communities, the fires revealed climate change as a physical reality, and—for Australians—as a local issue as well as a global one. As media coverage of the fires unfolded and smoke settled on half the country, the impact of climate change on individual lives, communities, landscapes, native animal and plant species, and well-established cultural practices (such as the summer camping holiday) could be fully and dramatically realised. Even for those Australians not immediately impacted, the effects were lived and felt: in our lungs, and on our skin, a physical revelation that the impacts of climate change are not limited to geographically distant people or as-yet-unborn future generations. For many of us, the summer of fire was a realisation that climate change can no longer be held at arm’s length.“Revelation” also involves a temporal collapse whereby the future is dragged into the present. A revelatory streak of this nature has always existed at the heart of environmental communication and can be traced back at least as far as the environmentalist Rachel Carson, whose 1962 book Silent Spring revealed a bleak, apocalyptic future devoid of wildlife and birdsong. In other words, environmental communication can inspire action for change by exposing the ways in which the comforts and securities of the present are built upon a refusal to engage with the future. This temporal rupture where the future meets the present is particularly characteristic of climate change narratives. It is not surprising, then, that media coverage of the 2019/2020 bushfires addressed not just the immediate loss and devastation but also dread of the future, and the understanding that summer will increasingly hold such threats. Bushfires, Climate Change and the MediaThe link between bushfire risk and climate change generated a flurry of coverage in the Australian media well before the fires started in the spring of 2019. In April that year, a coalition of 23 former fire and emergency services leaders warned that Australia was “unprepared for an escalating climate threat” (Cox). They requested a meeting with the new government, to be elected in May, and better funding for firefighting to face the coming bushfire season. When that meeting was granted, at the end of Australia’s hottest and driest year on record (Doyle) in November 2019, bushfires had already been burning for two months. As the fires burned, the emergency leaders expressed frustration that their warnings had been ignored, claiming they had been “gagged” because “you are not allowed to talk about climate change”. They cited climate change as the key reason why the fire season was lengthening and fires were harder to fight. "If it's not time now to speak about climate and what's driving these events”, they asked, “– when?" (McCubbing).The mediatised uncovering of a bushfire/climate change connection was not strictly a revelation. Recent fires in California, Russia, the Amazon, Greece, and Sweden have all been reported in the media as having been exacerbated by climate change. Australia, however, has long regarded itself as a “fire continent”: a place adapted to fire, whose landscapes invite fire and can recover from it. Bushfires had therefore been considered part of the Australian “normal”. But in the Australian spring of 2019, with fires having started earlier than ever and charring rainforests that did not usually burn, the fire chiefs’ warning of a climate change-induced catastrophic bushfire season seemed prescient. As the fires spread and merged, taking homes, lives, landscapes, and driving people towards the water, revelatory images emerged in the media. Pictures of fire refugees fleeing under dystopian crimson skies, masked against the smoke, were accompanied by headlines like “Apocalypse Now” (Fife-Yeomans) and “Escaping Hell” (The Independent). Reports used words like “terror”, “nightmare” (Smee), “mayhem”, and “Armageddon” (Davidson).In the Australian media, the fire/climate change connection quickly became politicised. The Deputy Prime Minister Michael McCormack interviewed by the ABC, responding to a comment by Greens leader Adam Bandt, said connecting bushfire and climate while the fires raged was “disgraceful” and “disgusting”. People needed help, he said, not “the ravings of some pure enlightened and woke capital city greenies” (Goloubeva and Haydar). Gladys Berejiklian the NSW Premier also described it as “inappropriate” (Baker) and “disappointing” (Fox and Higgins) to talk about climate change at this time. However Carol Sparks, Mayor of bushfire-ravaged Glen Innes in rural NSW, contradicted this stance, telling the ABC (Australian Broadcasting Corporation) “Michael McCormack needs to read the science”. Climate change, she said, was “not a political thing” but “scientific fact” (Goloubeva and Haydar).As the fires merged and intensified, so did the media firestorm. Key Australian media became a sparring ground for issue definition, with media predictably split down ideological lines. Public broadcasters the ABC and SBS (Special Broadcasting Service), along with The Age, The Sydney Morning Herald and The Guardian Australia, predominantly framed the catastrophe as wrought by climate change. The Guardian, in an in-depth investigation of climate science and bushfire risk, stated that “despite the political smokescreen” the connection between the fires and global warming was “unequivocal” (Redfearn). The ABC characterised the fires as “a glimpse of the horrors of climate change’s crescendoing impact” (Rose). News outlets owned by Rupert Murdoch’s News Corp Australia, however, actively sought to play down the fires’ seriousness. On 2 January, as front pages of newspapers across the world revealed horrifying fiery images, Murdoch’s Australian ran an upbeat shot of New Year’s Day picnic races as its lead, relegating discussion of the fires to page 4 (Meade). More than simply obscuring the fires’ significance, News Corp media actively sought to convince readers that the fires were not out of the ordinary. For example, as the fires’ magnitude was becoming clear on the last day of 2019, The Australian ran a piece comparing the fires with previous conflagrations, claiming such conditions were “not unprecedented” and the fires were “nothing new” (Johnstone). News Corp’s Sky News also used this frame: “climate alarmists”, “catastrophise”, and “don’t want to look at history”, it stated in a segment comparing the event to past major bushfires (Kenny).As the fires continued into January and February 2020, the refutation of the climate change frame solidified around several themes. Conservative media continued to insist the fires were “normal” for Australia and attributed their severity to a lack of hazard reduction burning, which they blamed on “Greens policies” (Brown and Caisley). They also promoted the argument, espoused by Energy Minister Angus Taylor, that with only “1.3% of global emissions” Australia “could not have meaningful impact” on global warming through emissions reductions, and that top-down climate mitigation pressure from the UN was “doomed to fail” (Lloyd). Foreign media saw the fires in quite different terms. From the outside looking in, the Australian fires were clearly revealed as fuelled by global heating and exacerbated by the Australian government’s climate denialism. Australia was framed as a “notorious climate offender” (Shield) that was—as The New York Times put it—“committing climate suicide” (Flanagan) with its lack of coherent climate policy and its predilection for mining coal. Ouest-France ran a headline reading “High on carbon, rich Australia denies global warming” in which it called Scott Morrison’s position on climate change “incomprehensible” (Guibert). The LA Times called the Australian fires “a climate change warning to its leaders—and ours”, noting how “fossil fuel friendly Morrison” had “gleefully wielded a fist-sized chunk of coal on the floor of parliament in 2017” (Karlik). In the UK, the Independent online ran a front page spread of the fires’ vast smoke plume, with the headline “This is what a climate crisis looks like” (Independent Online), while Australian MP Craig Kelly was called “disgraceful” by an interviewer on Good Morning Britain for denying the fires’ link to climate change (Good Morning Britain).Both in Australia and internationally, deliberate misinformation spread by social media additionally shaped media discourse on the fires. The false revelation that the fires had predominantly been started by arson spread on Twitter under the hashtag #ArsonEmergency. While research has been quick to show that this hashtag was artificially promoted by bots (Weber et al.), this and misinformation like it was also shared and amplified by real Twitter users, and quickly spread into mainstream media in Australia—including Murdoch’s Australian (Ross and Reid)—and internationally. Such misinformation was used to shore up denialist discourses about the fires, and to obscure revelation of the fire/climate change connection. Blame Framing, Public Opinion and the Extent of the Climate Change RevelationAs studies of media coverage of environmental disasters show us, media seek to apportion blame. This blame framing is “accountability work”, undertaken to explain how and why a disaster occurred, with the aim of “scrutinizing the actions of crisis actors, and holding responsible authorities to account” (Anderson et al. 930). In moments of disaster and in their aftermath, “framing contests” (Benford and Snow) can emerge in which some actors, regarding the crisis as an opportunity for change, highlight the systemic issues that have led to the crisis. Other actors, experiencing the crisis as a threat to the status quo, try to attribute the blame to others, and deny the need for policy change. As the Black Summer unfolded, just such a contest took place in Australian media discourse. While Murdoch’s dominant News Corp media sought to protect the status quo, promote conservative politicians’ views, and divert attention from the climate crisis, other Australian and overseas media outlets revealed the fires’ link to climate change and intransigent emissions policy. However, cracks did begin to show in the News Corp stance on climate change during the fires: an internal whistleblower publicly resigned over the media company’s fires coverage, calling it a “misinformation campaign”, and James Murdoch also spoke out about being “disappointed with the ongoing denial of the role of climate change” in reporting the fires (ABC/Reuters).Although media reporting on the environment has long been at the forefront of shaping social understanding of environmental issues, and news maintains a central role in both revealing environmental threats and shaping environmental politics (Lester), during Australia’s Black Summer people were also learning about the fires from lived experience. Polls show that the fires affected 57% of Australians. Even those distant from the catastrophe were, for some time, breathing the most toxic air in the world. This personal experience of disaster revealed a bushfire season that was far outside the normal, and public opinion reflected this. A YouGov Australia Institute poll in January 2020 found that 79% of Australians were concerned about climate change—an increase of 5% from July 2019—and 67% believed climate change was making the bushfires worse (Australia Institute). However, a January 2020 Ipsos poll also found that polarisation along political lines on whether climate change was indeed occurring had increased since 2018, and was at its highest levels since 2014 (Crowe). This may reflect the kind of polarised media landscape that was evident during the fires. A thorough dissection in public discourse of Australia’s unprecedented fire season has been largely eclipsed by the vast coverage of the coronavirus pandemic that so quickly followed it. 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IntroductionBushfires have taken numerous lives and destroyed communities throughout Australia over many years. Catastrophic fire weather alerts have occurred during the Australian summer of 2012–13, and long-term forecasts predict increased bushfire events throughout several areas of Australia. This article highlights how organisational and individual responses to bushfire in Australia often entail creative responses—either improvised responses at the time of bushfire emergencies or innovative (organisational, strategic, or technological) changes which help protect the community from, or mitigate against, future bushfire catastrophes. These improvised or innovative responses include emergency communications systems, practices, and devices. This article reports on findings from a research project funded by the Australian Research Council titled Using Community Engagement and Enhanced Visual Information to Promote FireWatch Satellite Communications as a Support for Collaborative Decision-making. FireWatch is a Web-based public information product based on near real time satellite data produced by the West Australian (WA) Government entity, Landgate. The project researches ways in which remote and regional publics can be engaged and mobilised through the development of a more user-friendly FireWatch site to make fire information accessible and usable, allowing a community-focused response to risk.The significance of the research project is evident both in how it addresses the important and life-threatening challenge of bushfires; and also in how Australia’s increasingly hot, dry, long summers are adding to historically-established risks. This innovative project uses an iterative, participatory design process incorporating action-research practices. This will ensure that the new Firewatch interface is redesigned, tested, observed, and reflected upon multiple times—and will incorporate the collective creativity of users, designers, and researchers.The qualitative findings reported on in this article are based on 19 interviews with community members in the town of Kununurra in the remote Kimberley region of WA. The findings are positioned within a reconceptualised framework in which creativity is viewed as an essential component of successful emergency responses. This includes, we argue, two critical aspects of creativity: improvisation during a catastrophic event; and ongoing innovation to improve future responses to catastrophes—including communication practices and technologies. This shifts the discourse within the literature in relation to the effective management and community responses to the changing phenomenon of fire catastrophes. Findings from the first round of interviews, and results of enquiries into previous bushfires in Australia, are used to highlight how these elements of creativity often entail a collective creativity on the part of emergency responders or the community in general. An additional focus is on the importance of the critical use of communication during a bushfire event.ImprovisationThe notion of "improvisation" is often associated with artistic performance. Nonetheless, improvisation is also integral to making effectual responses during natural catastrophes. “Extreme events present unforeseen conditions and problems, requiring a need for adaptation, creativity, and improvisation while demanding efficient and rapid delivery of services under extreme conditions” (Harrald 257).Catastrophes present us with unexpected scenarios and require rapid, on the spot problem solving and “even if you plan for a bushfire it is not going to go to plan. When the wind changes direction there has to be a new plan” (Jeff. Personal Interview. 2012). Jazz musicians or improvisational actors “work to build their knowledge across a range of fields, and this knowledge provides the elements for each improvisational outcome” (Kendra and Wachendorf 2). Similarly, emergency responders’ knowledge and preparation can be drawn “upon in the ambiguous and dynamic conditions of a disaster where not every need has been anticipated or accounted for” (Kendra and Wachtendorf 2). Individuals and community organisations not associated with emergency services also improvise in a creative and intuitive manner in the way they respond to catastrophes (Webb and Chevreau). For example, during the 9/11 terrorism catastrophe in the USA an assorted group of boat owners rapidly self-organised to evacuate Lower Manhattan. On their return trips, they carried emergency personnel and supplies to the area (Kendra and Wachendorf 5). An interviewee in our study also recalls bush fire incidents where creative problem solving and intuitive decision-making are called for. “It’s like in a fire, you have to be thinking fast. You need to be semi self-sufficient until help arrives. But without doing anything stupid and creating a worse situation” (Kelly. Personal Interview. 2012). Kelly then describes the rapid community response she witnessed during a recent fire on the outskirts of Kununurra, WA.Everyone had to be accounted for, moving cars, getting the tractors out, protecting the bores because you need the water. It happens really fast and it is a matter of rustling everyone up with the machinery. (2012)In this sense, the strength of communities in responding to catastrophes or disasters “results largely from the abilities of [both] individuals and organisations to adapt and improvise under conditions of uncertainty” (Webb and Chevreau 67). These improvised responses frequently involve a collective creativity—where groups of neighbours or emergency workers act in response to the unforseen, often in a unified and self-organising manner. InnovationCatastrophes also stimulate change and innovation for the future. Disasters create a new environment that must be explored, assessed, and comprehended. Disasters change the physical and social landscape, and thereby require a period of exploration, learning, and the development of new approaches. (Kendra and Wachtendorf 6)These new approaches can include organisational change, new response strategies, and technologies and communication improvements. Celebrated inventor Benjamin Franklin, for instance, facilitated the formation of the first Volunteer Fire department in the 1850s as a response to previous urban fire catastrophes in the USA (Mumford 258). This organisational innovation continues to play an instrumental part in modern fire fighting practices. Indeed, people living in rural and remote areas of Australia are heavily reliant on volunteer groups, due to the sparse population and vast distances that need to be covered.As with most inventions and innovations, new endeavours aimed at improving responses to catastrophes do not occur in a vacuum. They “are not just accidents, nor the inscrutable products of sporadic genius, but have abundant and clear causes in prior scientific and technological development” (Gifillian 61). Likewise, the development of our user-friendly and publically available FireWatch site relies on the accumulation of preceding inventions and innovations. This includes the many years spent developing the existing FireWatch site, a site dense in information of significant value to scientists, foresters, land managers, and fire experts.CommunicationsOften overlooked in discussions regarding emergency communications is the microgeographical exchanges that occur in response to the threat of natural disasters. This is where neighbours fill the critical period before emergency service responders can appear on site. In this situation, it is often local knowledge that underpins improvised grassroots communication networks that inform and organise the neighbourhood. During a recent bushfire on peri-rural blocks on the outskirts of Kununurra, neighbours went into action before emergency services volunteers could respond.We phoned around and someone would phone and call in. Instead of 000 being rung ten times, make sure that one person rang it in. 40 channel [CB Radio] was handy – two-way communication, four wheelers – knocking on doors making sure everyone is out of the house, just in case. (Jane. Personal Interview. 2012) Similarly, individuals and community groups have been able to inform and assist each other on a larger scale via social network technologies (SNTs). This creative application of SNTs began after the 9/11 terror attacks in 2001 when individuals created wikis in order to find missing persons (Palen and Lui). Twitter has experienced considerable growth and was used freely during the 2009 Black Saturday fires in Australia. Studies of tweeting activity during these fires indicate that “tweets made during Black Saturday are laden with actionable factual information which contrasts with earlier claims that tweets are of no value made of mere random personal notes” (Sinnappan et al. n.p.).Traditionally, official alerts and warnings have been provided to the public via television and radio. However, several inquiries into the recent bushfires within Australia show concern “with the way in which fire agencies deliver information to community members during a bushfire...[and in order to] improve community safety from bushfire, systems need to be implemented that enable community members to communicate information to fire agencies, making use of local knowledge” (Elsworth et al. 8).Technological and social developments over the last decade mean the public no longer relies on a single source of official information (Sorensen and Sorensen). Therefore, SNTs such as Twitter and Facebook are being used by the media and emergency authorities to make information available to the public. These SNTs are dynamic, in that there can be a two-way flow of information between the public and emergency organisations. Nonetheless, there has been limited use of SNTs by emergency agencies to source information posted by in situ residents, in order to help in decision-making (Freeman). Organisational use of multiple communication channels and platforms to inform citizens about bushfire emergencies ensures a greater degree of coverage—in case of communication systems breakdowns or difficulties—as in the telephone alert system breakdown in Kelmscott-Roleystone, WA or a recent fire in Warrnambool, Victoria which took out the regional telephone exchange making telephone calls, mobiles, landlines, and the Internet non-operational (Johnson). The new FireWatch site will provide an additional information option for rural and remote Australians who, often rely on visual sightings and on word-of-mouth to be informed about fires in their region. “The neighbour came over and said - there is a fire, we’d better get our act together because it is going to hit us. No sooner than I turned around, I thought shit, here it comes” (Richard. Personal Interview. 2012). The FireWatch ProjectThe FireWatch project involves the redevelopment of an existing FireWatch website to extend the usability of the product from experts to ordinary users in order to facilitate community-based decision-making and action both before and during bushfire emergencies. To this purpose, the project has been broken down to two distinct, yet interdependent, strands. The community strand involves collaboration within a community (in this case the Kununurra community) in order to carry out a community-centred approach to further development of the site. The design strand involves the development of an intuitive and accessible Web presentation of complex information in clear, unambiguous ways to inform action in stressful circumstances. At this stage, a first round of 19 semi-structured interviews with stakeholders has been conducted in Kununurra to determine fire-related information-seeking behaviours, attitudes to mediated information services in the region, as well as user feedback on a prototype website developed in the design strand of the project. Stakeholders included emergency services personnel (payed and volunteer), shire representatives, tourism operators, small business operators (including tourism operators), a forest manager, a mango farmer, an Indigenous ranger team manager as well as general community members. Interviewees reported dissatisfaction with current information systems. They gave positive feedback about the website prototype. “It’s very much, very easy to follow” (David. Personal Interview. 2012). “It looks so much better than [the old site]. You couldn’t get in that close on [the other site]. It is fantastic” (Lance. Personal Interview. 2012). They also added thought-provoking contributions to the design of the website (to be discussed later).Residents of Kununurra who were interviewed for this research project found bushfire warning communications unsatisfactory, especially during a recent fire on the outskirts of town. People who called 000 had difficulties passing the information on, having to explain exactly where Kununurra was and the location of fires to operators not familiar with the area. When asked how the Kununurra community gets their fire information a Shire representative explained: That is not very good at the moment. The only other way we can think about it is perhaps more updates on things like Facebook, perhaps on a website, but with this current fire there really wasn’t a lot of information and a lot of people didn’t know what was going on. We [the shire] knew because we were talking to the [fire] brigades and to FESA [Fire and Emergency Services Authority] but most residents didn’t have any idea and it looks pretty bad. (Ginny. Personal Interview. 2012) All being well, the new user-friendly FireWatch site will add another platform through which fire information messages are transmitted. Community members will be offered continuously streamed bushfire location information, which is independent of any emergency services communication systems. In particular, rural and remote areas of Australia will have fire information at the ready.The participatory methodology used in the design of the new FireWatch website makes use of collaborative creativity, whereby users’ vision of the website and context are incorporated. This iterative process “creates an equal evolving participatory process between user and designer towards sharing values and knowledge and creating new domains of collective creativity” (Park 2012). The rich and sometimes contradictory suggestions made by interviewees in this project often reflected individual visions of the tasks and information required, and individual preferences regarding the delivery of this information. “I have been thinking about how could this really work for me? I can give you feedback on what has happened in the past but how could it work for me in the future?” (Keith. Personal Interview. 2012). Keith and other community members interviewed in Kununurra indicated a variety of extra functions on the site not expected by the product designers. Some of these unexpected functions were common to most interviewees such as the great importance placed on the inclusion of a satellite view option on the site map (example shown in Figure 1). Jeremy, a member of an Indigenous ranger unit in the Kununurra area, was very keen to incorporate the satellite view options on the site. He explained that some of the older rangers:can’t use GPSs and don’t know time zones or what zones to put in, so they’ll use a satellite-style view. We’ll have Google Earth up on one [screen], and also our [own] imagery up on another [screen] and go that way. Be scrolling in and see – we’ve got a huge fire scar for 2011 around here; another guy will be on another computer zoning in and say, I think it is here. It’s quite simplistic but it works. (Personal Interview. 2012) In the case above, where rangers are already switching between computer screens to incorporate a satellite view into their planning, the importance of a satellite view layer on the FireWatch website makes user context an essential part of the design process. Incorporating many layers on one screen, as recommended by participants also ensures a more elegant solution to an existing problem.Figure 1: Satellite view in the Kununurra area showing features such as gorges, rivers, escarpments and dry riverbedsThis research project will involve further consultation with participants (both online and offline) regarding bushfire safety communications in their region, as well as the further design of the site. The website will be available over multiple devices (for example desktops, smart phones, and hand held tablet devices) and will be launched late this year. Further work will also be carried out to determine if social media is appropriate for this community of users in order to build awareness and share information regarding the site.Conclusion Community members improvise and self-organise when communicating fire information and organising help for each other. This can happen at a microgeographical (neighbourhood) level or on a wider level via social networking sites. Organisations also develop innovative communication systems or devices as a response to the threat of bushfires. Communication innovations, such as the use of Twitter and Facebook by fire emergency services, have been appropriated and fine-tuned by these organisations. Other innovations such as the user-friendly Firewatch site rely on previous technological developments in satellite-delivered imagery—as well as community input regarding the design and use of the site.Our early research into community members’ fire-related information-seeking behaviours and attitudes to mediated information services in the region of Kununurra has found unexpectedly creative responses, which range from collective creativity on the part of emergency responders or the community in general during events to creative use of existing information and communication networks. We intend to utilise this creativity in re-purposing FireWatch alongside the creative work of the designers in the project.Although it is commonplace to think of graphic design and new technology as incorporating creativity, it is rarely acknowledged how frequently these innovations harness everyday perspectives from non-professionals. In the case of the FireWatch developments, the creativity of designers and technologists has been informed by the creative responses of members of the public who are best placed to understand the challenges posed by restricted information flows on the ground in times of crisis. In these situations, people respond not only with new ideas for the future but with innovative responses in the present as they communicate with each other to deal with the challenge of a fast-moving and unpredictable situation. Such improvisation, honed through close awareness of the contours and parameters of both community and communication, are one of the ways through which people help keep themselves and each other safe in the face of dramatic developments.ReferencesElsworth, G., and K. Stevens, J. Gilbert, H. Goodman, A Rhodes. "Evaluating the Community Safety Approach to Bushfires in Australia: Towards an Assessment of What Works and How." 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