Nadine Marshall

Conceptualizing and Operationalizing Social Resilience within Commercial Fisheries in Northern Australia

How can we tell whether resource-dependent people are socially resilient to institutional change? This question is becoming increasingly important as demand for natural resources escalates, requiring resource managers to implement policies that are increasingly restrictive on resource users. Yet policy changes are frequently made without a good understanding of the likely social and economic consequences. Knowledge of the resilience of resource users to changes in resource-use policies can assist in the design and implementation of policies that minimize the impacts on people while maximizing the sustainability of ecosystem goods and services. Despite the appeal of resilience as a framework for sustaining human-environment relations, there has been a distinct lack of explicit application of the concept by natural- resource managers. In response, we build on general resilience theory to develop a conceptual model of social resilience for resource-dependent users. We test and refine the operational virtues of the model using the commercial fishing industry in North Queensland. Detailed surveys of individual resource users provide data on historic response, expected well-being, and capacity as a basis for assessing resilience. We find that the response of fishers to generic yet anticipated change events is determined by four key characteristics: (1) perception of risk associated with change; (2) perception of the ability to plan, learn, and reorganize; (3) perception of the ability to cope; and (4) level of interest in change. These responses represent relative measures of the likely response of resource users to prospective changes in resource policy that affect the way in which the resource is used or accessed.

How resource dependency can influence social resilience within a primary resource industry

Maintaining a healthy balance between human prosperity and environmental integrity is at the core of the principles of Ecological Sustainable Development. Resource-protection policies are frequently implemented so as to regulate the balance between resource access and use, however, they can inadvertently compromise the ability of resource users to adapt and be resilient. Resource users who are especially dependent on a resource are more seriously compromised. But how do we define and measure resource dependency? And how do we assess its ability to influence social resilience? In this study, a conceptual model of resource dependency is developed in terms of: (i) occupational attachment, (ii) attachment to place, (iii) employability, (iv) family attitude to change, (v) business size, (vi) business approach, (vii) financial situation, (viii) level of specialisation, (ix) time spent harvesting, and (x) interest in and knowledge of the environment. The model of resource dependency and its effect on social resilience are (quantitatively and qualitatively) tested and explored using the commercial fishing industry in North Queensland, Australia. Results show that occupational attachment and employability were important influences as were business size and approach. Results can be used to identify vulnerability to institutional change and guide policy development processes.

Transformational capacity and the influence of place and identity

Climate change is altering the productivity of natural resources with far-reaching implications for those who depend on them. Resource-dependent industries and communities need the capacity to adapt to a range of climate risks if they are to remain viable. In some instances, the scale and nature of the likely impacts means that transformations of function or structure will be required. Transformations represent a switch to a distinct new system where a different suite of factors become important in the design and implementation of response strategies. There is a critical gap in knowledge on understanding transformational capacity and its influences. On the basis of current knowledge on adaptive capacity we propose four foundations for measuring transformational capacity: (1) how risks and uncertainty are managed, (2) the extent of skills in planning, learning and reorganizing, (3) the level of financial and psychological flexibility to undertake change and (4) the willingness to undertake change. We test the influence of place attachment and occupational identity on transformational capacity using the Australian peanut industry, which is presently assessing significant structural change in response to predicted climatic changes. Survey data from 88% of peanut farmers in Queensland show a strong negative correlation between transformational capacity and both place attachment and occupational attachment, suggesting that whilst these factors may be important positive influences on the capacity to adapt to incremental change, they act as barriers to transformational change.

Riparian Ecosystems in the 21st Century: Hotspots for Climate Change Adaptation?

Riparian ecosystems in the 21st century are likely to play a critical role in determining the vulnerability of natural and human systems to climate change, and in influencing the capacity of these systems to adapt. Some authors have suggested that riparian ecosystems are particularly vulnerable to climate change impacts due to their high levels of exposure and sensitivity to climatic stimuli, and their history of degradation. Others have highlighted the probable resilience of riparian ecosystems to climate change as a result of their evolution under high levels of climatic and environmental variability. We synthesize current knowledge of the vulnerability of riparian ecosystems to climate change by assessing the potential exposure, sensitivity, and adaptive capacity of their key components and processes, as well as ecosystem functions, goods and services, to projected global climatic changes. We review key pathways for ecological and human adaptation for the maintenance, restoration and enhancement of riparian ecosystem functions, goods and services and present emerging principles for planned adaptation. Our synthesis suggests that, in the absence of adaptation, riparian ecosystems are likely to be highly vulnerable to climate change impacts. However, given the critical role of riparian ecosystem functions in landscapes, as well as the strong links between riparian ecosystems and human well-being, considerable means, motives and opportunities for strategically planned adaptation to climate change also exist. The need for planned adaptation of and for riparian ecosystems is likely to be strengthened as the importance of many riparian ecosystem functions, goods and services will grow under a changing climate. Consequently, riparian ecosystems are likely to become adaptation ‘hotspots’ as the century unfolds.

Evaluating social and ecological vulnerability of coral reef fisheries to climate change.

There is an increasing need to evaluate the links between the social and ecological dimensions of human vulnerability to climate change. We use an empirical case study of 12 coastal communities and associated coral reefs in Kenya to assess and compare five key ecological and social components of the vulnerability of coastal social-ecological systems to temperature induced coral mortality [specifically: 1) environmental exposure; 2) ecological sensitivity; 3) ecological recovery potential; 4) social sensitivity; and 5) social adaptive capacity]. We examined whether ecological components of vulnerability varied between government operated no-take marine reserves, community-based reserves, and openly fished areas. Overall, fished sites were marginally more vulnerable than community-based and government marine reserves. Social sensitivity was indicated by the occupational composition of each community, including the importance of fishing relative to other occupations, as well as the susceptibility of different fishing gears to the effects of coral bleaching on target fish species. Key components of social adaptive capacity varied considerably between the communities. Together, these results show that different communities have relative strengths and weaknesses in terms of social-ecological vulnerability to climate change.

Operationalizing resilience for adaptive coral reef management under global environmental change

Cumulative pressures from global climate and ocean change combined with multiple regional and local-scale stressors pose fundamental challenges to coral reef managers worldwide. Understanding how cumulative stressors affect coral reef vulnerability is critical for successful reef conservation now and in the future. In this review, we present the case that strategically managing for increased ecological resilience (capacity for stress resistance and recovery) can reduce coral reef vulnerability (risk of net decline) up to a point. Specifically, we propose an operational framework for identifying effective management levers to enhance resilience and support management decisions that reduce reef vulnerability. Building on a system understanding of biological and ecological processes that drive resilience of coral reefs in different environmental and socio-economic settings, we present an Adaptive Resilience-Based management (ARBM) framework and suggest a set of guidelines for how and where resilience can be enhanced via management interventions. We argue that press-type stressors (pollution, sedimentation, overfishing, ocean warming and acidification) are key threats to coral reef resilience by affecting processes underpinning resistance and recovery, while pulse-type (acute) stressors (e.g. storms, bleaching events, crown-of-thorns starfish outbreaks) increase the demand for resilience. We apply the framework to a set of example problems for Caribbean and Indo-Pacific reefs. A combined strategy of active risk reduction and resilience support is needed, informed by key management objectives, knowledge of reef ecosystem processes and consideration of environmental and social drivers. As climate change and ocean acidification erode the resilience and increase the vulnerability of coral reefs globally, successful adaptive management of coral reefs will become increasingly difficult. Given limited resources, on-the-ground solutions are likely to focus increasingly on actions that support resilience at finer spatial scales, and that are tightly linked to ecosystem goods and services.

Social vulnerability of marine resource users to extreme weather events

Knowledge of vulnerability provides the foundation for developing actions that minimize impacts and supports system views that are particularly desirable. We modified a well-established model to assess and describe the vulnerability of the two major industries dependent on the Great Barrier Reef (GBR) to extreme weather events. The modification entailed distinguishing between the properties that determine exposure, sensitivity, and adaptive capacity for both the ecological and the social components of a natural resource system. We surveyed 145 commercial fishers and 62 tourism operators following a severe tropical cyclone and a major flooding event that extensively affected the region in 2011. Exposure of these industries included direct risk to life and infrastructure and indirect risk from loss of important ecosystem services. Our study found that many commercial fishers and marine-based tourism operators were sensitive to changes in the GBR’s condition and limited in their adaptive capacity. However, those with smaller businesses, higher levels of occupational identity, place attachment, formal networks, and strategic approaches also had higher levels of adaptive capacity. These results suggest that resource users with higher sensitivity to change are not necessarily the most vulnerable; sensitivity may be offset by adaptive capacity. That is, while exposure and sensitivity determine the potential impact of a climate-induced change, adaptive capacity may be a major influence on the impacts that eventuate. We empirically show that adaptive capacity is an obvious focus for climate adaptation planning.

Impact of secondary salinisation on freshwater ecosystems: effects of contrasting, experimental, short-term releases of saline wastewater on macroinvertebrates in a lowland stream

In Australia, secondary salinisation of land and water resources is a serious environmental problem. We conducted two field experiments to examine the effects on macroinvertebrates of increased salt concentration (approximately 1000 and 2000 mg L–1 total dissolved solids (TDS)) and mode of salt water release (continuous press release approximately 1500 mg L–1 and four, separate pulses of approximately 3400 mg L–1 TDS). The abundance of the gastropod Ferrissia tasmanica, the mayfly Baetis sp. 5 and scraper and predator functional feeding groups were significantly reduced at 1500 mg L–1, with the effect exacerbated in pulse release channels. Moreover, the pooled abundance of Oligochaeta, Copepoda and Acarina was significantly reduced at 2000 mg L–1 and the number of drifting animals in the pulse treatment channels significantly increased following commencement of salt water release during daylight hours. In contrast, the abundance of 49 other macroinvertebrate taxa, collector–gatherer functional group and species diversity were unaffected by salinity or release schedule. We conclude that much of the existing macroinvertebrate fauna appears to be halotolerant. However, the abundance of halosensitive species will be reduced at 1500 mg L–1. Delivering short pulses of high salt concentration is more detrimental than delivering the same salt load at a low concentration over a longer period of time.

Assessing Resource Dependency on the Rangelands as a Measure of Climate Sensitivity

Climate change is altering the quality and availability of natural resources with far-reaching implications for resource users and the extensive social and economic systems that they support. Those who are particularly dependent on a climate sensitive resource will be especially sensitive to climate changes. Measuring resource dependency is key to understanding the sensitivity of resource users to climate change. I assessed 100 cattle-graziers in Queensland, Australia, for their dependency on grazing lands. I assessed their (i) attachment to place, (ii) attachment to occupation, (iii) family circumstances, (iv) employability, (v) networks, (vi) financial circumstances, (vii) business characteristics, (viii) local knowledge and skills, and (ix) attitudes and behavior. Results indicate that graziers are highly resource dependent, socially and economically. Understanding dependency in its entirety may provide the foundations for developing strategic efforts to reduce climate vulnerability and assist resource users to cope and adapt.

Preparing for climate change: recognising its early impacts through the perceptions of dive tourists and dive operators in the Egyptian Red Sea.

Climate change has the potential to permanently alter the attraction of many destinations and substantially impact the benefits derived from tourism. These impacts can be reduced if vulnerability to climate change is understood and operators take steps to adapt. Some of the more immediate and manageable impacts are likely to result from changes in tourist perceptions and attitudes towards climate change. We test for early impacts in the Red Sea region and for the awareness of tourism operators. We interviewed 150 tourists and 35 operators. Our data suggest that changes in tourist awareness are already apparent; yet, operators ascribe only a moderate level of environmental and climate awareness to them. This ‘perception gap’ increases the vulnerability of dive operators.