Chapter 2 ‘A CLOSE AND FRIENDLY ALLIANCE’: BIOLOGY, GEOLOGY AND THE GREAT BARRIER REEF EXPEDITION OF 1928–1929

oceanography, climate change, reefs, marine science, marine conservation, marine researc

Predicting Responses of Geo-ecological Carbonate Reef Systems to Climate Change: A Conceptual Model and Review

[Chapter Abstract] 230Coral reefs provide critical ecological and geomorphic (e.g. sediment production for reef-fronted shoreline maintenance) services, which interact in complex and dynamic ways. These services are under threat from climate change, requiring dynamic modelling approaches that predict how reef systems will respond to different future climate scenarios. Carbonate budgets, which estimate net reef calcium carbonate production, provide a comprehensive ‘snap-shot’ assessment of reef accretionary potential and reef stability. These budgets, however, were not intended to account for the full suite of processes that maintain coral reef services or to provide predictive capacity on longer timescales (decadal to centennial). To respond to the dual challenges of enhancing carbonate budget assessments and advancing their predictive capacity, we applied a novel model elicitation and review method to create a qualitative geo-ecological carbonate reef system model that links geomorphic, ecological and physical processes. Our approach conceptualizes relationships between net carbonate production, sediment transport and landform stability, and rates knowledge confidence to reveal major knowledge gaps and critical future research pathways. The model provides a blueprint for future coral reef research that aims to quantify net carbonate production and sediment dynamics, improving our capacity to predict responses of reefs and reef-fronted shorelines to future climate change.https://nsuworks.nova.edu/occ_facbooks/1116/thumbnail.jp

Cleaning up runoff onto the Great Barrier Reef: how art and science are inspiring farmers to help

The most recent report card on the Great Barrier Reef\u27s water quality highlighted major changes that need to be made to meet targets by 2018. Sediment and pollutant runoff from land use have increased 2-3 fold since 1850, largely driven by agricultural land clearing and grazing, while fertiliser used in sugar cane farming contributes to nitrogen runoff

Development of a spatial data infrastructure for coastal management in the Amirante Islands, Seychelles

Spatial data infrastructures play a key role in coastal management decision making in the Seychelles. This paper describes four components of a web-based spatial data infrastructure that were developed to facilitate coastal management of the Amirante Islands in the Seychelles. The four components include: (i) the institutional arrangement for using spatial data effectively to address local management challenges, (ii) the production of island habitat maps from remotely sensed data, (iii) the tasks undertaken for promoting access to and use of this spatial data, and (iv) an example of how this data is used for a specific coastal management application in the Seychelles. By outlining these four components, the value of this spatial data infrastructure framework for tropical coastal management in the Seychelles is demonstrated

Isometric scaling of faunal patchiness: Seagrass macrobenthic abundance across small spatial scales.

Following earlier studies across 2115 → 33 m2 scales (Barnes and Laurie, 2018), patchiness of macrobenthic abundance in intertidal Queensland seagrass was assessed by dispersion indices, spatial autocorrelation and hotspot analysis across a hierarchically-nested series of smaller scales (5.75 → 0.09 m2). Overall patterns of distribution and abundance over larger extents and with greater lag were mirrored across these smaller ones. Assemblage abundance per station varied by a factor of >10, but all three approaches showed effective constancy of total assemblage patchiness across all sub-2115 m2 scales (across-scales-mean Lloyd's IP of 1.06 and global Moran's I of 0.13). Equivalent constancy was also shown by most numerically-dominant species (scaling exponent β = 0.93-1.15). Decreasing patchiness of some species with decreasing scale, however, resulted in two no longer being patchily dispersed across small scales. Significant hotspots of abundance occurred at a constant proportion of stations across scales, against a background of randomly scattered peak-abundance points

Geographic Information Systems (GIS)

Geographic Information Systems (GIS) are computerized spatial decision-making tools that work with place-based information and allow users to display, manage, and analyze geographic data. Since coastal features typically show distinct spatial patterning, coastal managers and scientists have incorporated this technology from its beginnings. However, coastal data often represent dynamic, multidimensional systems that present problems to this historically land-based technology

Isometric scaling of faunal patchiness: Seagrass macrobenthic abundance across small spatial scales.

Following earlier studies across 2115 → 33 m2 scales (Barnes and Laurie, 2018), patchiness of macrobenthic abundance in intertidal Queensland seagrass was assessed by dispersion indices, spatial autocorrelation and hotspot analysis across a hierarchically-nested series of smaller scales (5.75 → 0.09 m2). Overall patterns of distribution and abundance over larger extents and with greater lag were mirrored across these smaller ones. Assemblage abundance per station varied by a factor of >10, but all three approaches showed effective constancy of total assemblage patchiness across all sub-2115 m2 scales (across-scales-mean Lloyd's IP of 1.06 and global Moran's I of 0.13). Equivalent constancy was also shown by most numerically-dominant species (scaling exponent β = 0.93-1.15). Decreasing patchiness of some species with decreasing scale, however, resulted in two no longer being patchily dispersed across small scales. Significant hotspots of abundance occurred at a constant proportion of stations across scales, against a background of randomly scattered peak-abundance points

\u27Rock the Boat\u27: song-writing as geographical practice

Climate change science is unequivocal on the link between fossil fuels and climate change. Yet, some governments - including those in Australia - fail to meet agreed targets and continue to invest in the coal industry. Scientists and other scholars have expressed concern that the science is not prompting shifts in policy adequate to address current and future effects of climate change. Many have called for other tools - specifically, the arts and social sciences - to investigate and communicate about the environmental and social changes underway. In this context, this article explores the potential of interdisciplinary collaborative song-writing as research practice. Beginning on a boat on Australia\u27s Great Barrier Reef, the research team adopted singing and song-writing as a method for coming together to reflect upon our research aims and motivations, to explore and express the delight and grief we were experiencing in this climate-changing land and seascape and potentially to reach new audiences and create different affects. Our multidisciplinary expertise offered impetus to pursue a hybrid form: an original song written, professionally recorded and vinyl pressed; scholarly notes to expand on our song lyrics; visual presentation of our music as annotated score; and written reflections on the process and its contribution to knowledge. Here, we present and explore the possibilities of song-writing as creative geographical practice