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- Climate change (2)
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Articles 1 - 13 of 13
Full-Text Articles in Physical Sciences and Mathematics
Optimal Placement Of Distributed Energy Storage Systems In Distribution Networks Using Artificial Bee Colony Algorithm, Choton K. Das, Octavian Bass, Ganesh Kothapalli, Thair S. Mahmoud, Daryoush Habibi
Optimal Placement Of Distributed Energy Storage Systems In Distribution Networks Using Artificial Bee Colony Algorithm, Choton K. Das, Octavian Bass, Ganesh Kothapalli, Thair S. Mahmoud, Daryoush Habibi
Research outputs 2014 to 2021
The deployment of utility-scale energy storage systems (ESSs) can be a significant avenue for improving the performance of distribution networks. An optimally placed ESS can reduce power losses and line loading, mitigate peak network demand, improve voltage profile, and in some cases contribute to the network fault level diagnosis. This paper proposes a strategy for optimal placement of distributed ESSs in distribution networks to minimize voltage deviation, line loading, and power losses. The optimal placement of distributed ESSs is investigated in a medium voltage IEEE-33 bus distribution system, which is influenced by a high penetration of renewable (solar and wind) …
Emotions Predict Policy Support: Why It Matters How People Feel About Climate Change, Susie Wang, Zoe Leviston
Emotions Predict Policy Support: Why It Matters How People Feel About Climate Change, Susie Wang, Zoe Leviston
Research outputs 2014 to 2021
Current research shows that emotions can motivate climate engagement and action, but precisely how has received scant attention. We propose that strong emotional responses to climate change result from perceiving one's “objects of care” as threatened by climate change, which motivates caring about climate change itself, and in turn predicts behaviour. In two studies, we find that climate scientists (N = 44) experience greater emotional intensity about climate change than do students (N = 94) and the general population (N = 205), and that patterns of emotional responses explain differences in support for climate change policy. Scientists tied their emotional …
President Trump Tweets Supreme Leader Kim Jong-Un On Nuclear Weapons: A Comparison With Climate Change, David E. Allen, Michael Mcaleer
President Trump Tweets Supreme Leader Kim Jong-Un On Nuclear Weapons: A Comparison With Climate Change, David E. Allen, Michael Mcaleer
Research outputs 2014 to 2021
A set of 125 tweets about North Korea's Supreme Leader Kim Jong-Un by President Trump from 2013 to 2018 are analysed by means of the data mining technique, sentiment analysis. The intention is to explore the contents and sentiments of the messages contained, the degree to which they differ, and their implications about President Trump's understanding and approach to international diplomacy. The results suggest a predominantly positive emotion in relation to tweets about North Korea, despite the use of questionable nicknames such as "Little Rocket Man". A comparison is made between the tweets on North Korea and climate change, madefrom …
Forest Die-Off Following Global-Change-Type Drought Alters Rhizosphere Fungal Communities, Anna J. M. Hopkins, Katinka X. Ruthrof, Joseph B. Fontaine, George Matusick, Shannon J. Dundas, Giles E. St J. Hardy
Forest Die-Off Following Global-Change-Type Drought Alters Rhizosphere Fungal Communities, Anna J. M. Hopkins, Katinka X. Ruthrof, Joseph B. Fontaine, George Matusick, Shannon J. Dundas, Giles E. St J. Hardy
Research outputs 2014 to 2021
Globally, forest die-off from global-change-type drought events (hotter droughts) are of increasing concern, with effects reported from every forested continent. While implications of global-change-type drought events have been explored for above-ground vegetation, below-ground organisms have received less attention, despite their essential contributions to plant growth, survival, and ecosystem function. We investigated rhizosphere fungal communities in soils beneath trees affected by a global-change-type drought in a Mediterranean climate-type ecosystem in southwestern Australia, quantifying how fungal richness, composition and functional groups varied along a drought impact gradient. Following a forest die-off three years previously, we collected soils beneath dead and alive trees …
On Legitimacy In Impact Assessment: An Epistemologically-Based Conceptualisation, Alan Bond, Jenny Pope, Francois Retief, Angus Morrison-Saunders
On Legitimacy In Impact Assessment: An Epistemologically-Based Conceptualisation, Alan Bond, Jenny Pope, Francois Retief, Angus Morrison-Saunders
Research outputs 2014 to 2021
Impact assessment (IA) is carried out as an ex ante process to inform decision-making. It includes requirements for engagement with stakeholders (including the public) regarding actions proposed by a proponent. A key issue with the various stakeholders involved is the perceived legitimacy of the IA, which can have implications both for the reputation of the proponent, and the likelihood of conflict over the decision. But the understanding of legitimacy in the IA literature has changed over time in line with an ontological shift from positivism (that scientifically generated information leads to better informed decisions) to the post-positivist acknowledgement of the …
Coagulation And Electrocoagulation For Co-Treatment Of Stabilized Landfill Leachate And Municipal Wastewater, Mohini Verma, R. Naresh Kumar
Coagulation And Electrocoagulation For Co-Treatment Of Stabilized Landfill Leachate And Municipal Wastewater, Mohini Verma, R. Naresh Kumar
Research outputs 2014 to 2021
Landfill leachate and municipal wastewater at various ratios (1:20, 1:10, 1:7 and 1:5) were subjected to coagulation and electrocoagulation (EC). Alum was used in conventional coagulation at pH 6 and aluminum plate as electrode was used in EC at a current density of 386 A/m2 with 5 cm inter electrode spacing. Treatment efficiency was assessed from removal of chemical oxygen demand (COD), total suspended solids (TSS), turbidity, ammonia, nitrate and phosphate. At 1:5 ratio of landfill leachate to municipal wastewater, highest COD removal was with 3.8 g/L alum whereas highest turbidity removal was with 3.3 g/L alum during coagulation. …
Carbon Assimilation And Transfer Through Kelp Forests In The Ne Atlantic Is Diminished Under A Warmer Ocean Climate, Albert Pessarrodona, Philippa J. Moore, Martin Sayer, Dan Smale
Carbon Assimilation And Transfer Through Kelp Forests In The Ne Atlantic Is Diminished Under A Warmer Ocean Climate, Albert Pessarrodona, Philippa J. Moore, Martin Sayer, Dan Smale
Research outputs 2014 to 2021
Global climate change is affecting carbon cycling by driving changes in primary productivity and rates of carbon fixation, release and storage within Earth's vegetated systems. There is, however, limited understanding of how carbon flow between donor and recipient habitats will respond to climatic changes. Macroalgal‐dominated habitats, such as kelp forests, are gaining recognition as important carbon donors within coastal carbon cycles, yet rates of carbon assimilation and transfer through these habitats are poorly resolved. Here, we investigated the likely impacts of ocean warming on coastal carbon cycling by quantifying rates of carbon assimilation and transfer in Laminaria hyperborea kelp forests—one …
Evolution Or Revolution: Where Next For Impact Assessment?, Zsuzsa Banhalmi-Zakar, Claire Gronow, Lachlan Wilkinson, Bryan Jenkins, Jenny Pope, Geraldine Squires, Kathy Witt, Galina Williams, Jon Womersley
Evolution Or Revolution: Where Next For Impact Assessment?, Zsuzsa Banhalmi-Zakar, Claire Gronow, Lachlan Wilkinson, Bryan Jenkins, Jenny Pope, Geraldine Squires, Kathy Witt, Galina Williams, Jon Womersley
Research outputs 2014 to 2021
Impact assessment (IA) has become one of the most prevalent environmental policy instruments today. Its introduction under the National Environmental Policy Act (US) in 1969 was revolutionary. Perhaps it is not surprising, then, that such a widely used tool has received its share of criticism, including that it fails to meet some of its fundamental goals. Over the last fifty years, IA has broadened in scope and application and embraced new techniques. It has followed evolved, but has not changed fundamentally. We believe that IA must continue to change to meet the societal and environmental challenges of the 21st century. …
Generalized Correlation Measures Of Causality And Forecasts Of The Vix Using Non-Linear Models, David E. Allen, Vince J. Hooper
Generalized Correlation Measures Of Causality And Forecasts Of The Vix Using Non-Linear Models, David E. Allen, Vince J. Hooper
Research outputs 2014 to 2021
This paper features an analysis of causal relations between the daily VIX, S & P500 and the daily realised volatility (RV) of the S & P500 sampled at 5 min intervals, plus the application of an Artificial Neural Network (ANN) model to forecast the future daily value of the VIX. Causal relations are analysed using the recently developed concept of general correlation Zheng et al. and Vinod. The neural network analysis is performed using the Group Method of Data Handling (GMDH) approach. The results suggest that causality runs from lagged daily RV and lagged continuously compounded daily return on the …
Reimagining The Cultural Significance Of Wetlands: From Perth’S Lost Swamps To The Beeliar Wetlands, Danielle Brady, Jeffrey Murray
Reimagining The Cultural Significance Of Wetlands: From Perth’S Lost Swamps To The Beeliar Wetlands, Danielle Brady, Jeffrey Murray
Research outputs 2014 to 2021
The history of Perth, Western Australia, has been characterised by the incremental loss of its wetlands. While disputes about wetlands are often framed solely in terms of the environment, they are places of cultural significance too. The extensive wetlands of central Perth, food gathering and meeting places for Noongar people are now expunged from the landscape. Urban dwellers of Perth are largely unaware that the seasonal lakes and wetlands of the centre of the city were the larders, gardens, hideouts, dumps and playgrounds of previous generations; both Noongar and Settler. The loss of social memory of these lost cultural/natural places …
Are Current Effectiveness Criteria Fit For Purpose? Using A Controversial Strategic Assessment As A Test Case, Jenny Pope, Alan J. Bond, Carolyn Cameron, François P. Retief, Angus N. Morrison-Saunders
Are Current Effectiveness Criteria Fit For Purpose? Using A Controversial Strategic Assessment As A Test Case, Jenny Pope, Alan J. Bond, Carolyn Cameron, François P. Retief, Angus N. Morrison-Saunders
Research outputs 2014 to 2021
The aim of this paper is to test the broader utility of the sustainability assessment effectiveness framework of Bond et al. (2015) by applying it to a controversial strategic assessment case study. The effectiveness framework comprises six dimensions: procedural effectiveness, substantive effectiveness, transactive effectiveness, normative effectiveness, pluralism, and knowledge and learning. It was originally developed to evaluate sustainability assessment at a system-wide level and it has not been previously applied to a specific case study. The analysis was conducted through document review and the first-hand experience of two of the authors who were involved in the case study …
A Marine Heatwave Drives Massive Losses From The World’S Largest Seagrass Carbon Stocks, A. Arias-Ortiz, Oscar Serrano, Pere Masque´, Paul S. Lavery, Ute Mueller, G. A. Kendrick, Mohammad Rozaimi, Alba Esteban, J. W. Fourqurean, N. Marba, Miguel-Angel Mateo, K. Murray, M. J. Rule, C. M. Duarte
A Marine Heatwave Drives Massive Losses From The World’S Largest Seagrass Carbon Stocks, A. Arias-Ortiz, Oscar Serrano, Pere Masque´, Paul S. Lavery, Ute Mueller, G. A. Kendrick, Mohammad Rozaimi, Alba Esteban, J. W. Fourqurean, N. Marba, Miguel-Angel Mateo, K. Murray, M. J. Rule, C. M. Duarte
Research outputs 2014 to 2021
Seagrass ecosystems contain globally significant organic carbon (C) stocks. However, climate change and increasing frequency of extreme events threaten their preservation. Shark Bay, Western Australia, has the largest C stock reported for a seagrass ecosystem, containing up to 1.3% of the total C stored within the top metre of seagrass sediments worldwide. On the basis of field studies and satellite imagery, we estimate that 36% of Shark Bay’s seagrass meadows were damaged following a marine heatwave in 2010/2011. Assuming that 10 to 50% of the seagrass sediment C stock was exposed to oxic conditions after disturbance, between 2 and 9 …
How Important Is Groundwater Availability And Stream Perenniality To Riparian And Floodplain Tree Growth?, Neil E. Pettit, Raymond H. Froend
How Important Is Groundwater Availability And Stream Perenniality To Riparian And Floodplain Tree Growth?, Neil E. Pettit, Raymond H. Froend
Research outputs 2014 to 2021
Riparian vegetation is important for stream functioning and as a major landscape feature. For many riparian plants, shallow groundwater is an important source of water, particularly in areas where rainfall is low, either annually or seasonally, and when extended dry conditions prevail for all or part of the year. The nature of tree water relationships is highly complex. Therefore, we used multiple lines of evidence to determine the water sources used by the dominant tree species Eucalyptus camaldulensis (river red gum), growing in riparian and floodplain areas with varying depth to groundwater and stream perenniality. Dendrometer bands were used to …