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Your search keyword '"Schaffelke, Britta"' showing total 175 results
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175 results on '"Schaffelke, Britta"'

1. Research priorities for the sustainability of coral-rich western Pacific seascapes

Author

Cumming, Graeme S., Adamska, Maja, Barnes, Michele L., Barnett, Jon, Bellwood, David R., Cinner, Joshua E., Cohen, Philippa J., Donelson, Jennifer M., Fabricius, Katharina, Grafton, R. Quentin, Grech, Alana, Gurney, Georgina G., Hoegh-Guldberg, Ove, Hoey, Andrew S., Hoogenboom, Mia O., Lau, Jacqueline, Lovelock, Catherine E., Lowe, Ryan, Miller, David J., Morrison, Tiffany H., Mumby, Peter J., Nakata, Martin, Pandolfi, John M., Peterson, Garry D., Pratchett, Morgan S., Ravasi, Timothy, Riginos, Cynthia, Rummer, Jodie L., Schaffelke, Britta, Wernberg, Thomas, and Wilson, Shaun K.

Published
2023
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2. Reduced diversity and stability of coral-associated bacterial communities and suppressed immune function precedes disease onset in corals.

Author

Pollock, F Joseph, Lamb, Joleah B, van de Water, Jeroen AJM, Smith, Hillary A, Schaffelke, Britta, Willis, Bette L, and Bourne, David G

Subjects
bacteria, coral microbes, disease, immunity, marine infrastructure, white syndrome
Abstract

Disease is an emerging threat to coral reef ecosystems worldwide, highlighting the need to understand how environmental conditions interact with coral immune function and associated microbial communities to affect holobiont health. Increased coral disease incidence on reefs adjacent to permanently moored platforms on Australia's Great Barrier Reef provided a unique case study to investigate environment-host-microbe interactions in situ. Here, we evaluate coral-associated bacterial community (16S rRNA amplicon sequencing), immune function (protein-based prophenoloxidase-activating system), and water quality parameters before, during and after a disease event. Over the course of the study, 31% of tagged colonies adjacent to platforms developed signs of white syndrome (WS), while all control colonies on a platform-free reef remained visually healthy. Corals adjacent to platforms experienced significant reductions in coral immune function. Additionally, the corals at platform sites that remained visually healthy throughout the study had reduced bacterial diversity compared to healthy colonies at the platform-free site. Interestingly, prior to the observation of macroscopic disease, corals that would develop WS had reduced bacterial diversity and significantly greater community heterogeneity between colonies compared to healthy corals at the same location. These results suggest that activities associated with offshore marine infrastructure impacts coral immunocompetence and associated bacterial community, which affects the susceptibility of corals to disease.

Published
2019

3. Sediment and turbidity associated with offshore dredging increase coral disease prevalence on nearby reefs.

Author

Pollock, F Joseph, Lamb, Joleah B, Field, Stuart N, Heron, Scott F, Schaffelke, Britta, Shedrawi, George, Bourne, David G, and Willis, Bette L

Subjects
Animals, Anthozoa, Water Pollutants, Analysis of Variance, Regression Analysis, Environmental Monitoring, Geologic Sediments, Models, Biological, Time Factors, Western Australia, Coral Reefs, Models, Biological, General Science & Technology, MD Multidisciplinary
Abstract

In recent decades, coral reef ecosystems have declined to the extent that reefs are now threatened globally. While many water quality parameters have been proposed to contribute to reef declines, little evidence exists conclusively linking specific water quality parameters with increased disease prevalence in situ. Here we report evidence from in situ coral health surveys confirming that chronic exposure to dredging-associated sediment plumes significantly increase the prevalence of white syndromes, a devastating group of globally important coral diseases. Coral health surveys were conducted along a dredging-associated sediment plume gradient to assess the relationship between sedimentation, turbidity and coral health. Reefs exposed to the highest number of days under the sediment plume (296 to 347 days) had two-fold higher levels of disease, largely driven by a 2.5-fold increase in white syndromes, and a six-fold increase in other signs of compromised coral health relative to reefs with little or no plume exposure (0 to 9 days). Multivariate modeling and ordination incorporating sediment exposure level, coral community composition and cover, predation and multiple thermal stress indices provided further confirmation that sediment plume exposure level was the main driver of elevated disease and other compromised coral health indicators. This study provides the first evidence linking dredging-associated sedimentation and turbidity with elevated coral disease prevalence in situ. Our results may help to explain observed increases in global coral disease prevalence in recent decades and suggest that minimizing sedimentation and turbidity associated with coastal development will provide an important management tool for controlling coral disease epizootics.

Published
2014

4. New interventions are needed to save coral reefs

Author

Anthony, Ken, Bay, Line K., Costanza, Robert, Firn, Jennifer, Gunn, John, Harrison, Peter, Heyward, Andrew, Lundgren, Petra, Mead, David, Moore, Tom, Mumby, Peter J., van Oppen, Madeleine J. H., Robertson, John, Runge, Michael C., Suggett, David J., Schaffelke, Britta, Wachenfeld, David, and Walshe, Terry

Published
2017
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24. Interventions to help coral reefs under global change—A complex decision challenge

Author

Anthony, Kenneth R. N., primary, Helmstedt, Kate J., additional, Bay, Line K., additional, Fidelman, Pedro, additional, Hussey, Karen E., additional, Lundgren, Petra, additional, Mead, David, additional, McLeod, Ian M., additional, Mumby, Peter J., additional, Newlands, Maxine, additional, Schaffelke, Britta, additional, Wilson, Kerrie A., additional, and Hardisty, Paul E., additional

Published
2020
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27. Additional file 1: of Microbial indicators of environmental perturbations in coral reef ecosystems

Author

Glasl, Bettina, Bourne, David, Frade, Pedro, Thomas, Torsten, Schaffelke, Britta, and Webster, Nicole

Abstract

Supplementary figures and tables. Supplementary material contains additional information on the frequency of sampling (Table S1) and detailed statistical outputs (Table S2-S8). Furthermore, additional supplementary figures are illustrating alpha diversity measures of microbial communities associated with the distinct coral reef habitats (Figure S1), within and between time point similarities of microbial community composition (Figure S2), PCoA plots for sediment and seawater microbiomes (Figure S3), environmental variability at Geoffrey Bay (Magnetic Island) (Figure S4), collinearity of environmental metadata collected at Geoffrey Bay (Magnetic Island) (Figure S5), microbial indicator taxa, calculated with the Indicator Value analysis, for high and low temperature, Chla, POC and TSS concentrations (Figure S6), classification of seawater temperature based on Random Forest machine learning (Figure S7), Random Forest machine learning seawater temperature regression (Figure S8) and the relative fraction of stable and transient microbiomes associated with the distinct coral reef habitats (Figure S9). (DOCX 2596 kb)

Published
2019
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29. Global coral bleaching caused by global warming demands a global response.

Author

Schaffelke, Britta, Wachenfeld, David, and Stead, Selina

Subjects
CORAL bleaching, GLOBAL warming, GREENHOUSE gas mitigation, CORAL reef restoration, CORAL reefs & islands
Abstract

The article discusses the fourth global coral bleaching event, which is a result of global warming. This event is significant because it is the second global mass bleaching event in the past decade, indicating that bleaching events are becoming more frequent and severe. Coral reefs are important for ocean health and support a large number of marine species, but they are highly vulnerable to climate change. The article emphasizes the need for urgent action to reduce greenhouse gas emissions and protect coral reefs. Scientists are studying ways to improve reef resilience and restore coral reefs, but global collaboration and addressing local factors are also crucial. [Extracted from the article]

Published
2024

36. Rehabilitation of coral reefs through removal of macroalgae: state of knowledge and considerations for management and implementation

Author

Ceccarelli, Daniela M., primary, Loffler, Zoe, additional, Bourne, David G., additional, Al Moajil-Cole, Grace S., additional, Boström-Einarsson, Lisa, additional, Evans-Illidge, Elizabeth, additional, Fabricius, Katharina, additional, Glasl, Bettina, additional, Marshall, Paul, additional, McLeod, Ian, additional, Read, Mark, additional, Schaffelke, Britta, additional, Smith, Adam K., additional, Jorda, Georgina T., additional, Williamson, David H., additional, and Bay, Line, additional

Published
2018
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37. Support for improved quality control but misplaced criticism of GBR science. Reply to viewpoint “The need for a formalised system of Quality Control for environmental policy-science” by P. Larcombe and P. Ridd (Marine Pollution Bulletin 126: 449–461, 2018)

Author

Schaffelke, Britta, primary, Fabricius, Katharina, additional, Kroon, Frederieke, additional, Brodie, Jon, additional, De'ath, Glenn, additional, Shaw, Roger, additional, Tarte, Diane, additional, Warne, Michael, additional, and Thorburn, Peter, additional

Published
2018
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38. Shifting paradigms in restoration of the world's coral reefs

Author

Oppen, Madeleine J. H., primary, Gates, Ruth D., additional, Blackall, Linda L., additional, Cantin, Neal, additional, Chakravarti, Leela J., additional, Chan, Wing Y., additional, Cormick, Craig, additional, Crean, Angela, additional, Damjanovic, Katarina, additional, Epstein, Hannah, additional, Harrison, Peter L., additional, Jones, Thomas A., additional, Miller, Margaret, additional, Pears, Rachel J., additional, Peplow, Lesa M., additional, Raftos, David A., additional, Schaffelke, Britta, additional, Stewart, Kristen, additional, Torda, Gergely, additional, Wachenfeld, David, additional, Weeks, Andrew R., additional, and Putnam, Hollie M., additional

Published
2017
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