Wade L Hadwen

Wade L Hadwen
Griffith University · Australian Rivers Institute and Griffith Climate Change Response Program

B Sc (Hons) PhD

About

89
Publications
32,198
Reads
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1,864
Citations
Citations since 2016
36 Research Items
1171 Citations
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2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
2016201720182019202020212022050100150200250
Additional affiliations
January 1998 - present
Griffith University
January 1997 - present

Publications

Publications (89)
Article
Full-text available
Seasonality in tourism is a regular and predictable cycle of visitation across a year. Although seasonality in visitation is extremely common and is known, in principle, often to be driven by temporal changes in a range of natural and institutional factors, the relative importance of different individual pressures has yet to be quantified for any l...
Article
Full-text available
The Pacific region presents some of the lowest water and sanitation coverage figures globally, with some countries showing stagnating or even declining access to improved water and sanitation. In addition, Pacific Island Countries (PICs) are among the most vulnerable countries on the globe to extreme and variable climatic events and sea-level rise...
Article
Full-text available
Coral reefs across the world have demonstrated an incredible resilience to disturbance, having persisted for over 200 million years withstanding local, short-term shocks such as cyclones and bleaching events, as well as large-scale, long-term global changes such as sea-level fluctuations. However, there are now many persistent and growing threats t...
Article
Full-text available
Climate change poses significant threats to wellbeing and livelihoods of people and the ecosystems in many Small Island Developing States (SIDS). Adaptation solutions must counteract these threats while also supporting development in vulnerable SIDS. Suitable options need to ensure that connections between the social, economic, and environmental di...
Article
Full-text available
Islands provide the opportunity to explore management regimes and research issues related to the isolation, uniqueness, and integrity of ecological systems. K’gari (Fraser Island) is an Australian World Heritage property listed based on its outstanding natural value, specifically, the unique wilderness characteristics and the diversity of ecosystem...
Article
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Rapid tourism growth can place unprecedented strain on water resources and reduce access for local communities. This study explored the state of Inclusive water, sanitation and hygiene (WASH) in the tourism sector and local communities of Labuan Bajo, one of Indonesia's ‘super-premium’ tourism destinations. The formative research applied an Inclusi...
Article
Full-text available
Developing countries face risks from coastal hazards that are being amplified by climate change. The selection of effective adaptation interventions to manage these risks requires a sufficiently accurate assessment of the coastal hazard at a given location. Yet challenges remain in terms of understanding local coastal risks given the coarseness of...
Article
Check dams, installed to control sediment and flood risk along streams, can significantly influence the hydrology and ecology of aquatic ecosystems. Few studies assessing its impacts have been done in some countries, however, such has not been the case in the Philippines. Implementation of check dam projects in the Philippines has not been paired w...
Article
Sustainable tourism development, including tourism's COVID-19 recovery, requires a holistic view of environmental and community benefits, including access to water, sanitation and hygiene (WASH). This study presents a system-wide Inclusive WASH in tourism framework for destinations. Using a qualitative approach including interviews and focus groups...
Preprint
Full-text available
Developing countries face risks from natural hazards that are being amplified by climate change. Selection of effective adaptation interventions to manage these risks requires a sufficiently accurate assessment of the coastal hazard at a given location. Yet challenges remain in terms of understanding local coastal risks given the coarseness of glob...
Article
Coastal freshwater wetlands (CFWs) are among the most understudied wetlands globally and are highly vulnerable to projected climate changes. To address CFW knowledge gaps in south-east Queensland, Australia, we surveyed the floristic composition and structure of wooded CFWs and explored variation in vegetation patterns in relation to selected envir...
Article
Full-text available
Modern stormwater treatment assets are a form of water sensitive urban design (WSUD) features that aim to reduce the volumes of sediment, nutrients and gross pollutants discharged into receiving waterways. Local governments and developers in urban areas are installing and maintaining a large number of stormwater treatment assets, with the aim of im...
Article
Nutrients are a fundamental determinant of broad scale patterns in the benthic algal community of stream ecosystems. Excessive inputs of nutrients such as nitrogen and phosphorus into upland streams may result in significant impacts on benthic algal communities. In upland streams, diatoms are the most abundant and diverse taxonomic group in benthic...
Article
Full-text available
Coastal wetlands are significant components of the coastal landscape with important roles in ecosystem service provision and mitigation of climate change. They are also likely to be the system most impacted by climate change, feeling the effects of sea levels rise, temperature increases and rainfall regime changes. Climate change impacts on estuari...
Article
Full-text available
Coastal freshwater supply and demand systems are expected to be significantly affected by changes to both climatic and non-climatic drivers over coming decades. Adapting to these changes to secure adequate freshwater to meet the rising demands of socio-economic development has become a critical task for decision-makers. Whilst a range of adaptation...
Article
Adaptation to drought is particularly challenging on remote island atolls, such as those found in the Republic of the Marshall Islands (RMI), a nation of 58,000 populating 29 low-lying coral atolls spread over >2 million km². Exposure to consecutive atmospheric hazards, such as meteorological floods and droughts diminish scarce water resources and...
Article
Delivering water and sanitation services are challenging in data poor rural settings in developing countries. In this paper we develop a Bayesian Belief Network model that supports decision making to increase the availability of safe drinking water in five flood-prone rural communities in the Solomon Islands. We collected quantitative household sur...
Article
Full-text available
Bayesian networks (BNs) are widely implemented as graphical decision support tools which use probability inferences to generate "what if?" and "which is best?" analyses of potential management options for water resource management, under climate change and socioeconomic stressors. This paper presents a systematic quantitative literature review of a...
Article
Full-text available
The routine use of multiple water sources to meet household water needs is widely practiced and has been reported in many developing countries. However, it is typically neglected by implementers, development organizations, and researchers who tend to focus exclusively on the “main source of drinking water.” In this Perspective, we explain the natur...
Article
Full-text available
Coastal freshwater wetlands are amongst the world’s most modified but poorly researched ecosystems and some of the most vulnerable to climate change. Here, we examine vegetation resilience in coastal wetlands of subtropical Australia to altered salinity and flooding regimes likely to occur with climate change. We conducted field surveys and glassho...
Article
Environmental water management has become a global imperative in response to environmental degradation and the growing recognition that human well-being and livelihoods are critically dependent on freshwater ecosystems and the ecological functions and services they provide. Although a wide range of techniques and strategies for planning and impleme...
Article
Water resources management faces many challenges in coastal areas of developing countries, where climate change coupled with high rates of population growth and urbanization have the potential to cause severe water scarcity. Of particular concern, are sea level rise and altered precipitation regimes that will influence spatial and temporal patterns...
Article
Full-text available
Global water research and monitoring typically focus on the household's “main source of drinking-water.” Use of multiple water sources to meet daily household needs has been noted in many developing countries but rarely quantified or reported in detail. We gathered self-reported data using a cross-sectional survey of 405 households in eight communi...
Conference Paper
Full-text available
Water resources management faces many challenges in coastal areas of developing countries; where sea level rise and upstream flow decline coupled with high rates of population growth and urbanization have the potential to cause severe water scarcity. Understanding of the operational resilience of coastal freshwater systems is therefore needed to in...
Article
Full-text available
Pacific Island Countries (PICs) lag behind global trends in water, sanitation and hygiene (WaSH) development. We conducted a systematic search of all English language papers (published before February 2015) about WaSH in PICs to evaluate the state of the peer-reviewed literature and explore thematic findings. A total of 121 papers met the criteria...
Article
Full-text available
Climate change threatens water, sanitation and hygiene (WaSH) facilities and services, as these are intimately linked to the water cycle and are vulnerable to changes in the quantity and quality of available water resources. Floods and droughts, which pollute and reduce water delivery respectively, have now become a perennial issue to deal with in...
Chapter
The recent Paris climate change agreement has resulted in a consensus between 196 countries on the need for action, including a stated aim to try to limit warming to 1.5 °C. Despite its weaknesses, it will provide the policy basis for climate change action and research within signature countries. Scientific research is highlighted in the agreement...
Preprint
Climate change threatens water, sanitation and hygiene (WaSH) facilities and services, as these are intimately linked to the water cycle and are vulnerable to changes in the quantity and quality of available water resources. Floods and droughts, which pollute and reduce water delivery respectively, have now become a perennial issue to deal with in...
Article
Full-text available
The investigation of multiple sources in household water management is considered overly complicated and time consuming using paper and pen interviewing (PAPI). We assess the advantages of computer-assisted personal interviewing (CAPI) in Pacific Island Countries (PICs). We adapted an existing PAPI survey on multiple water sources and expanded it t...
Article
Bayesian belief networks (BBNs) are probabilistic graphical models that can capture and integrate both quantitative and qualitative data, thus accommodating data-limited conditions. This paper systematically reviews applications of BBNs with respect to spatial factors, water domains, and the consideration of climate change impacts. The methods used...
Article
Full-text available
Freshwater inflow events play a major role in structuring estuarine zooplankton communities. Freshwater inflow events affect zooplankton directly through advective forcing and changes in salinity, and indirectly through changes to resources by the delivery of organic carbon and nutrients that can stimulate microbial and primary production. Here, we...
Article
Full-text available
Diatoms (Division Bacillariophyta) commonly dominate benthic algal communities in upland streams and are the major primary producers that sit at the base of food webs. Given their ecological importance, the aim of the present study was to investigate the spatial patterns of freshwater biofilm biomass and diatom assemblage composition in response to...
Conference Paper
Full-text available
The imbalance of a coastal water supply and demand system is temporally affected by both natural and anthropogenic processes that are interactions between interdependent components with many feedbacks. Water availability is influenced over time by interactions among sea level rise, river flows and salt-water intrusion. Water demand is affected by p...
Article
Full-text available
Freshwater inflows play an important role in delivering dissolved organic carbon (DOC) to estuaries. Episodic inputs of DOC may support increased bacterial production. However, the role of DOC in supporting zooplankton production is widely debated. To evaluate this role we performed an in situ mesocosm experiment in the Bega River estuary, Australi...
Article
Full-text available
Understanding longitudinal variation in water quality along rivers and how they are influenced by large dams is important for both ecological theory and river management. This study examines longitudinal changes in water quality downstream of a large bottom release dam (Lake Copeton) on the Gwydir River, Australia. We compared longitudinal changes...
Chapter
This chapter provides an overview of the vulnerability of coastal ecosystems to climate change with respect to their exposure, sensitivity and adaptive capacity, emphasising the uncertainties involved in attempting to predict ecological impacts. It explores potential options for managed adaptation action that aim to conserve coastal biodiversity an...
Data
Full-text available
Natural abundances of stable isotopes in lotic food webs yield valuable information about sources of organic matter for consumers and trophic structure. However, interpretation of isotopic information can be challenging in the face of variability in organisms at the base of food webs. Unionid and dreissenid mussels, commonly used as baseline organi...
Data
Recreation ecology - the study of the environmental consequences of outdoor recreation/nature-based tourism activities and their effective management - is an emerging field of global importance. A primary research generalization in this field, the use-impact relationship, is commonly described as curvilinear, with proportionally more impact from in...
Technical Report
Full-text available
JUNE 2013 This paper has been produced by ACCARNSI's Infrastructure Node based at the UNSW Water Research Laboratory, Manly Vale, NSW. The authors are members of NCCARF's Adaptation Research Networks for Settlements and Infrastructure (ACCARNSI), Terrestrial Biodiversity and Water Resources and Freshwater Biodiversity. www.nccarf.edu.au/settlements...
Article
Full-text available
A variety of sources contribute to nutrients in rivers and nutrients may subsequently take various pathways and undergo different transformation processes. We first review representative types of isotopes and the roles of isotope techniques that have been or could be used for nutrient assessment and management. We then present technical, financial...
Data
Full-text available
Freshwater flow events drive phytoplankton productivity in subtropical coastal river systems. However, few studies have the necessary temporal and spatial resolution to fully characterise the effect of events on the distribution of phytoplankton across the full river–estuary–bay continuum. The present study characterised the response of phytoplank-...
Article
Full-text available
Environmental monitoring is an essential feature of environmental assessment and natural resource management. Whilst the focus of monitoring programs is often on the response of chosen variables to a disturbance of particular concern, it is also important to consider the variability of disturbance pressures in relation to the variability of the eco...
Technical Report
Climate change represents a major threat to coastal ecosystems and communities. In many areas around the Australian coast, the combined projected threats of sea level rise, increased temperatures and reduced rainfall will place unprecedented stress on species, ecosystems and human settlements and industries. Given that even the strictest climate ch...
Article
Full-text available
The value of aquatic systems for biodiversity, agriculture, pastoralism and mining is widely recognised, whereas their significance for tourism and recreation is often poorly acknowledged. We surveyed protected-area managers, local governments and tour operators (river and general) to determine how aquatic systems were used in inland Australia for...
Article
Full-text available
Urban land use has increased dramatically over the past few decades. Urban streams are distinguished from forested or agricultural streams, in particular, by their more variable and unpredictable hydrologic pattern. The resulting high variability in nutrient loading is likely to alter the elemental composition of primary producers and, ultimately,...
Article
Full-text available
Many aquatic ecosystems have been severely degraded by water-resource development affecting flow regimes and biological connectivity. Freshwater fish have been particularly affected by these changes and climate change will place further stress on them. The MurrayDarling Basin (MDB), Australia, represents a highly affected aquatic system with dramat...
Article
Full-text available
Fraser Island’s perched dune lakes are magnets for tourists. Our research has documented the ecological consequences of unregulated visitor use of these systems, with a focus on the likely visitor-mediated delivery of nutrients to these oligotrophic systems. In addition to threats from visitors, a significant sleeper issue for perched dune lakes is...
Book
Full-text available
Climate change represents a major threat to coastal ecosystems and communities. In many areas around the Australian coast, the combined projected threats of sea level rise, increased temperatures and reduced rainfall will place unprecedented stress on species, ecosystems and human settlements and industries. Given that even the strictest climate ch...
Article
Understanding longitudinal trends in the processing of carbon in rivers represents a much conceptualised, but infrequently tested, issue in aquatic ecology. In this study, we conducted concurrent longitudinal examinations of three very different rivers in eastern Australia to determine whether general principles in river functioning exist across br...
Article
Full-text available
Stream food web function is often assessed using carbon stable isotope assessments of the relative contribution of autochthonous and allochthonous sources of organic matter to consumer diets. As a result, variability in source signatures can strongly influence the assessment of carbon flows. To examine the implications of temporal source variabilit...
Article
Full-text available
The Intergovernmental Panel on Climate Change has identified Australia as among the developed nations most at risk from climate change effects. Key tourism icon destinations and the tourism sector generally have been identified as being particularly at risk. This paper reports on an interdisciplinary, multi-case study approach to assess tourism sta...
Article
Full-text available
Growing demand for natural area recreation and tourism has seen a rise in visitor numbers to protected areas. In response, there has been an increase in research into visitor impacts. There has also been increased interest in establishing and maintaining visitor impacts monitoring programmes. Here, we evaluate the relationship between recreation ec...