Multiple climate impacts on seagrass dynamics: Amphibolis antarctica patches at Ningaloo Reef, Western Australia

The impacts of tropical cyclones combined with a marine heatwave are reported for a seagrass community at Ningaloo Reef, Western Australia. A community of 9.5ha of Amphibolis antarctica was lost following a combination of cyclone-induced burial and a marine heatwave. No new seedlings have been observed since the loss; recruitment of seedlings may be impeded by local ocean circulation.

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Profitability, Productivity and the Efficiency of Grain Production with Climate Impacts: A Case Study of Western Australia

SSRN Electronic Journal ◽

10.2139/ssrn.2095774 ◽

2012 ◽

Author(s):

Nhu Che ◽

Tom Kompas ◽

Vilaphonh Xayavong ◽

David Cook

Keyword(s):

Western Australia ◽

Climate Impacts ◽

Grain Production

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Vertical, thermal, and geographic habitats of whale sharks (Rhincodon typus) tagged along Ningaloo Reef, Western Australia

10.22371/02.2019.006 ◽

2019 ◽

Author(s):

Rachel Steinberg

Keyword(s):

Western Australia ◽

Rhincodon Typus ◽

Ningaloo Reef ◽

Whale Sharks

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Outbreak densities of the coral predator Drupella in relation to in situ Acropora growth rates on Ningaloo Reef, Western Australia

Coral Reefs ◽

10.1007/s00338-018-01748-7 ◽

2018 ◽

Vol 37 (4) ◽

pp. 985-993 ◽

Cited By ~ 3

Author(s):

C. Bessey ◽

R. C. Babcock ◽

D. P. Thomson ◽

M. D. E. Haywood

Keyword(s):

Western Australia ◽

Growth Rates ◽

Ningaloo Reef

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Spatial and temporal patterns of nature-based tourism interactions with whale sharks (Rhincodon typus) at Ningaloo Reef, Western Australia

Estuarine Coastal and Shelf Science ◽

10.1016/j.ecss.2014.05.023 ◽

2014 ◽

Vol 148 ◽

pp. 109-119 ◽

Cited By ~ 6

Author(s):

Douglas J. Anderson ◽

Halina T. Kobryn ◽

Brad M. Norman ◽

Lars Bejder ◽

Julian A. Tyne ◽

...

Keyword(s):

Western Australia ◽

Temporal Patterns ◽

Spatial And Temporal Patterns ◽

Rhincodon Typus ◽

Ningaloo Reef ◽

Whale Sharks

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Macroalgae Inhibits Larval Settlement and Increases Recruit Mortality at Ningaloo Reef, Western Australia

PLoS ONE ◽

10.1371/journal.pone.0124162 ◽

2015 ◽

Vol 10 (4) ◽

pp. e0124162 ◽

Cited By ~ 26

Author(s):

Fiona J. Webster ◽

Russell C. Babcock ◽

Mike Van Keulen ◽

Neil R. Loneragan

Keyword(s):

Western Australia ◽

Larval Settlement ◽

Ningaloo Reef

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Habitat Associations of Juvenile Fish at Ningaloo Reef, Western Australia: The Importance of Coral and Algae

PLoS ONE ◽

10.1371/journal.pone.0015185 ◽

2010 ◽

Vol 5 (12) ◽

pp. e15185 ◽

Cited By ~ 70

Author(s):

Shaun K. Wilson ◽

Martial Depczynski ◽

Rebecca Fisher ◽

Thomas H. Holmes ◽

Rebecca A. O'Leary ◽

...

Keyword(s):

Western Australia ◽

Juvenile Fish ◽

Habitat Associations ◽

Ningaloo Reef

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Microbial ecosystem dynamics drive fluctuating nitrogen loss in marine anoxic zones

Proceedings of the National Academy of Sciences ◽

10.1073/pnas.1818014116 ◽

2019 ◽

Vol 116 (15) ◽

pp. 7220-7225 ◽

Cited By ~ 10

Author(s):

Justin L. Penn ◽

Thomas Weber ◽

Bonnie X. Chang ◽

Curtis Deutsch

Keyword(s):

Competitive Advantage ◽

Ocean Circulation ◽

Species Interactions ◽

Nitrogen Loss ◽

Regional Scale ◽

Climate Impacts ◽

Ecosystem Dynamics ◽

N Loss ◽

Microbial Ecosystem ◽

Anoxic Zones

The dynamics of nitrogen (N) loss in the ocean’s oxygen-deficient zones (ODZs) are thought to be driven by climate impacts on ocean circulation and biological productivity. Here we analyze a data-constrained model of the microbial ecosystem in an ODZ and find that species interactions drive fluctuations in local- and regional-scale rates of N loss, even in the absence of climate variability. By consuming O2to nanomolar levels, aerobic nitrifying microbes cede their competitive advantage for scarce forms of N to anaerobic denitrifying bacteria. Because anaerobes cannot sustain their own low-O2niche, the physical O2supply restores competitive advantage to aerobic populations, resetting the cycle. The resulting ecosystem oscillations induce a unique geochemical signature within the ODZ—short-lived spikes of ammonium that are found in measured profiles. The microbial ecosystem dynamics also give rise to variable ratios of anammox to heterotrophic denitrification, providing a mechanism for the unexplained variability of these pathways observed in the ocean.

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