Estimates of sediment and nutrient loads in 10 major catchments draining to the Great Barrier Reef during 2006–2009

Joo, M.; Raymond, Myriam; McNeil, Vivienne H.; Huggins, R.; Turner, Ryan; Choy, Satish

doi:10.1016/j.marpolbul.2012.01.002

Cited by 49 publications

(27 citation statements)

References 53 publications

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“…In parallel, sediment, nutrient and herbicide loads based on monitoring data have been estimated using a variety of methods, with different load estimation techniques applied to different basins, or to different sets of monitoring information per individual basin (e.g. Brodie et al, 2009a;Joo et al, 2012;Kroon et al, 2012;Neil et al, 2002). Kroon et al (2012) provides a comprehensive compilation of available catchment water quality and flow monitoring data across all basins draining to the GBR, as well as a synthesis of all pre-European and current load estimates extending to all GBR basins.…”

Section: The Gbr Catchment Area (Gbrca)mentioning

confidence: 99%

“…Lynam et al (2010) showed that Bayesian Belief Networks (BBNs) could be used to assess the probabilities of changed management practice scenarios improving sediment and nutrient loads at end of catchment while Shenton et al (2010) showed how BBNs could link improved management to marine ecosystem outcomes. (3) Improved load estimation using more sophisticated algorithms that better account for the variable flow and concentration profiles found in northern Australian rivers and enabling better estimates of load estimation uncertainty (for example, Joo et al, 2012;Kuhnert et al, in review). (4) Improved identification of specific catchment areas, subcatchments, landuses and erosion processes that are the sources of contaminants reaching the river mouth.…”

Section: Improving Load Estimation and Source Attributionmentioning

confidence: 99%

See 1 more Smart Citation

Terrestrial pollutant runoff to the Great Barrier Reef: An update of issues, priorities and management responses

Brodie

Kroon

Schaffelke

et al. 2012

Marine Pollution Bulletin

351

188

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Section: The Gbr Catchment Area (Gbrca)mentioning

confidence: 99%

Section: Improving Load Estimation and Source Attributionmentioning

confidence: 99%

Terrestrial pollutant runoff to the Great Barrier Reef: An update of issues, priorities and management responses

Brodie

Kroon

Schaffelke

et al. 2012

Marine Pollution Bulletin

351

188

View full text Add to dashboard Cite

“…In order to assess the long-term effectiveness of the Reef Plan, there is a need to monitor the long term trends in sediment and nutrient delivery to the reef and to identify sub catchment hot-spots that are responsible for delivering disproportionate quantities of sediment and nutrients. In 2005 a water quality monitoring program was implemented in the GBR catchment, designed to ''track long term trends in the load of sediment and nutrient entering the GBR lagoon from priority catchments'' (Joo et al, 2012). The water quality monitoring activities of the original program focussed at the end of freshwater system of ten priority rivers; Normanby, Barron, Johnstone, Tully, Herbert, Burdekin, O'Connell, Pioneer, Fitzroy, Burnett and 13 major sub-basins.…”

Section: Long-term Catchment Monitoring Of Water Qualitymentioning

confidence: 99%

A Paddock to reef monitoring and modelling framework for the Great Barrier Reef: Paddock and catchment component

Carroll

Waters

Vardy

et al. 2012

Marine Pollution Bulletin

100

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“…First, flood was strongly associated with coral losses in southern catchments and while none of the water quality metrics could provide better statistical fits, the mechanism responsible very likely involves water quality. A study of ten catchments along the inshore GBR found that Fitzroy is one of the two catchments that contribute the highest sediment and nutrient exports (Joo et al 2012);…”

Section: Resultsmentioning

confidence: 99%

The Dynamics and Resilience of Coral Reefs

Lam¹

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A major goal in ecosystem management is to prevent shifts to undesirable states, and there is widespread interest in understanding, mapping, and quantifying resilience to support management decisions. With rapid changes taking place on coral reefs, managers and scientists are faced with a challenging task in prioritising interventions that help strengthen reef resilience. Resilience-based management (RBM) of coral reefs requires in-depth knowledge on the various components and feedback mechanisms of the ecosystem, and uses resilience theory to inform decisions. To date, there are mechanistic models that analyse and forecast the future of reefs, but being data intensive and requiring specialist knowledge, are not applicable to managers in most locations with limited data and analytical training. Hence, there is a need to develop approaches to acquire insights on resilience using monitoring data.The global decline of reefs to varying extents, underscores the importance of understanding how biophysical factors influence and shape reef community dynamics. Multiple environmental factors affect reef functioning, either positively or negatively, and the diversity and complexity of responses make it difficult to predict future reef trajectories. My thesis addresses the need to improve retrospective analyses of time-series monitoring data to suit management goals, such as resilience, by focusing on the data collection and analytical components of long-term monitoring programmes. In this thesis, I trialled two state-of-the-art methods to extract useful ecological information and identified drivers of coral reef trajectories from long-term monitoring data collected in the Great Barrier Reef, arguably one of the most comprehensive coral reef monitoring dataset in the world.In Chapter 1, I provide a theoretical overview of the issues related to resilience and identify the quantification approaches found within the coral reef field. By examining the current state of knowledge, a simple framework of resilience-related concepts is developed, followed by an analysis of approaches used to quantify reef resilience and vulnerability. Seven broad quantification approaches were identified under the three principle concepts of (1) ecological resilience (ecological resilience, precariousness and current attractor), (2) engineering resilience (short-term recovery rate and long-term reef performance), and (3) vulnerability (absolute and relative vulnerability) respectively.iii Resilience-based management (RBM) is a new approach to reef management that is being adopted by governmental institutions globally. However, there are no quantitative studies on how this has changed coral reef monitoring and assessment. In Chapter 2, I conducted a critical evaluation of how RBM has changed the way we monitor our reefs. Through a comparison of metrics used in conventional programmes with those developed specifically for resilience assessments, I show that resilience metrics are much more diverse and have a strong focus on ecological processe...

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Estimates of sediment and nutrient loads in 10 major catchments draining to the Great Barrier Reef during 2006–2009

Cited by 49 publications

References 53 publications

Terrestrial pollutant runoff to the Great Barrier Reef: An update of issues, priorities and management responses

Terrestrial pollutant runoff to the Great Barrier Reef: An update of issues, priorities and management responses

A Paddock to reef monitoring and modelling framework for the Great Barrier Reef: Paddock and catchment component

The Dynamics and Resilience of Coral Reefs

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