NESP TWQ Round 5 - Project 5.2 – From exposure to risk: Novel experimental approaches to analyse cumulative impacts and determine thresholds in the Great Barrier Reef World Heritage Area (GBRWHA)

Understanding cumulative impacts from multiple stressors will be critical for successful management of the Great Barrier Reef (GBR) under the Reef2050 Plan. We will produce experimental analyses of concentration-response relationships for selected species under broad, controlled envelopes of local stressors at different climate scenarios. Results will inform assessments of ecological risks, and management opportunities for a range of activities in the coastal zone and on the GBR. In the project-extension we will use exposure maps and ecological models, based on our developed and existing databases and experimental results, to advance our understanding of the contribution of individual disturbances in a cumulative framework (including both acute and chronic disturbances) to the current status of the reef. In turn, this new knowledge will inform management on setting future water quality thresholds, identifying catchments and regions as priorities for management action aimed at ameliorating impacts to reef health and building resilience for large-scale cumulative disturbances

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