National Climate Change Adaption Research Facility
Abstract
Inherent in every adaptation measure are risks, costs and benefits. A challenge for
decision-makers is how to choose adaptations that reduce risks from climate change
impacts and provide overwhelmingly beneficial outcomes. This project focused on
three catchments in the Murray-Darling Basin to test a method for more integrative
climate change adaptation that increased resilience and avoided maladaptation. Water
management under the highly variable Murray-Darling Basin climate has lessons and
broad implications for climate policies, especially as some of the proposed climate
change adaptation measures for ecosystems and water resources are overly narrow or
maladaptive, and have a high risk of institutional failure.
We brought together a range of experts and Catchment Management Authority (CMA)
representatives from the Goulburn-Broken, Lachlan and NSW Murray catchments to
synthesise and integrate the risks, costs and benefits of climate change adaptation
measures and assess the extent to which they may represent maladaptation or
contribute to adaptation and resilience.
Specific methods included a literature review; a three-day technical workshop with
representatives from the three CMAs as well as technical experts from academic
institutions and government departments; three stakeholder workshops with the CMAs;
and semi-structured interviews with 20 key stakeholder representatives in each case
study. Limitations of this approach, mainly due to timing and financial constraints,
included small sample sizes for the interviews, a CMA-only focus, reliance on expert
opinion and limited opportunity to further test the results.
By working with the CMAs, we:
• showed how systemic climate change adaptation planning can better
consider risks, costs and benefits to inform choice of measures
• produced research data on climate change adaptation options in specific
catchments in southern Australia
• identified current stakeholder understanding of the complex issue of climate
change adaptation at a catchment level
• confirmed the usefulness of an ‘ecosystem-based approach’ for climate
change adaptation
• developed a ‘CCA Catchment Assessment Framework’ as a tool for regional
management bodies in southern Australia to assess climate change
adaptation.
The key lessons that emerged from this research are presented below. First, there are
many activities underway that, if extended and linked, would comprise a substantial
ecosystem-based approach to adaptation. It is notable that many of these activities had
not previously been considered in an adaptation context. Second, the research
confirmed the need to look at a suite of complementary actions that spread risk rather
than investing in one or two perceived best actions. Third, the adoption of an
ecosystem-based approach is constrained by institutional complexity and socioeconomic
considerations that should be included in assessments of climate change
adaptation. Finally, adaptive management provides a basis for the implementation of
an ecosystem-based approach to climate change adaptationInherent in every adaptation measure are risks, costs and benefits. A challenge for
decision-makers is how to choose adaptations that reduce risks from climate change
impacts and provide overwhelmingly beneficial outcomes. This project focused on
three catchments in the Murray-Darling Basin to test a method for more integrative
climate change adaptation that increased resilience and avoided maladaptation. Water
management under the highly variable Murray-Darling Basin climate has lessons and
broad implications for climate policies, especially as some of the proposed climate
change adaptation measures for ecosystems and water resources are overly narrow or
maladaptive, and have a high risk of institutional failure.
We brought together a range of experts and Catchment Management Authority (CMA)
representatives from the Goulburn-Broken, Lachlan and NSW Murray catchments to
synthesise and integrate the risks, costs and benefits of climate change adaptation
measures and assess the extent to which they may represent maladaptation or
contribute to adaptation and resilience.
Specific methods included a literature review; a three-day technical workshop with
representatives from the three CMAs as well as technical experts from academic
institutions and government departments; three stakeholder workshops with the CMAs;
and semi-structured interviews with 20 key stakeholder representatives in each case
study. Limitations of this approach, mainly due to timing and financial constraints,
included small sample sizes for the interviews, a CMA-only focus, reliance on expert
opinion and limited opportunity to further test the results.
By working with the CMAs, we:
• showed how systemic climate change adaptation planning can better
consider risks, costs and benefits to inform choice of measures
• produced research data on climate change adaptation options in specific
catchments in southern Australia
• identified current stakeholder understanding of the complex issue of climate
change adaptation at a catchment level
• confirmed the usefulness of an ‘ecosystem-based approach’ for climate
change adaptation
• developed a ‘CCA Catchment Assessment Framework’ as a tool for regional
management bodies in southern Australia to assess climate change
adaptation.
The key lessons that emerged from this research are presented below. First, there are
many activities underway that, if extended and linked, would comprise a substantial
ecosystem-based approach to adaptation. It is notable that many of these activities had
not previously been considered in an adaptation context. Second, the research
confirmed the need to look at a suite of complementary actions that spread risk rather
than investing in one or two perceived best actions. Third, the adoption of an
ecosystem-based approach is constrained by institutional complexity and socioeconomic
considerations that should be included in assessments of climate change
adaptation. Finally, adaptive management provides a basis for the implementation of
an ecosystem-based approach to climate change adaptatio