Claire Ross

Claire Ross
Department of Biodiversity and Conservation; Adjunct Research Fellow at University of Western Australia

PhD

About

22
Publications
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448
Citations

Publications

Publications (22)
Article
Full-text available
Many temperate reefs are experiencing a shift towards a greater abundance of tropical species in response to marine heatwaves and long-term ocean warming worldwide. Baseline data for coral communities growing in high-latitude reefs is required to better understand ecosystem changes over time. In this study, we explore spatial and temporal trends in...
Article
Full-text available
Ocean warming is transforming the world’s coral reefs, which are governed by the growth of marine calcifiers, most notably branching corals. Critical to skeletal growth is the corals’ regulation of their internal chemistry to promote calcification. Here we investigate the effects of temperature and light on the calcifying fluid chemistry (using bor...
Preprint
Full-text available
Ocean warming is increasing the incidence, scale, and severity of global-scale coral bleaching and mortality, culminating in the third global coral bleaching event that occurred during record marine heatwaves of 2014-2017. While local effects of these events have been widely reported, the global implications remain unknown. Analysis of 15,066 reef...
Preprint
Full-text available
Understanding the drivers of net coral reef calcium carbonate production is increasingly important as ocean warming, acidification, and other anthropogenic stressors threaten the maintenance of coral reef structures and the services these ecosystems provide. Despite intense research effort on coral reef calcium carbonate production, the inclusion o...
Article
Full-text available
Oxygen depletion is well recognized for its role in the degradation of tropical coral reefs. Extreme acute hypoxic events that lead to localized mass mortality and the formation of ‘dead zones’ (a region where few or no organisms can survive due to a lack of oxygen) are particularly concerning as they can result in wide-ranging losses of biodiversi...
Technical Report
Full-text available
The drivers contributing to the trajectories of seagrass ecosystems is a key knowledge gap which limits our effectiveness in preventing their decline. Here, we present the key findings from the regional assessment of seagrass condition (shoot density) over time, which was undertaken to inform environmental impact assessment and monitoring as well a...
Article
Full-text available
Scientists and managers rely on indicator taxa such as coral and macroalgal cover to evaluate the effects of human disturbance on coral reefs, often assuming a universally positive relationship between local human disturbance and macroalgae. Despite evidence that macroalgae respond to local stressors in diverse ways, there have been few efforts to...
Article
Full-text available
Understanding the drivers of net coral reef calcium carbonate production is increasingly important as ocean warming, acidification, and other anthropogenic stressors threaten the maintenance of coral reef structures and the services these ecosystems provide. Despite intense research effort on coral reef calcium carbonate production, the inclusion o...
Article
Full-text available
Coral skeletons are the most commonly used high‐resolution temperature proxy in the tropical oceans, providing paleoclimate reconstructions dating back centuries to millennia. However, physiological differences in skeletal formation modes together with artifacts arising from coral biomineralization (vital effects) can confound the temperature depen...
Article
Full-text available
The sensitivity of corals to ocean acidification depends on the extent to which they can buffer their calcifying fluid aragonite saturation state (Ωcf) from declines in seawater pH. While the seasonal response of the coral calcifying fluid Ωcf to seawater pH has been studied previously, relatively little is known about Ωcf dynamics on shorter (dail...
Article
Full-text available
The processes that occur at the micro-scale site of calcification are fundamental to understanding the response of coral growth in a changing world. However, our mechanistic understanding of chemical processes driving calcification is still evolving. Here, we report the results of a long-term in situ study of coral calcification rates, photo-physio...
Article
Full-text available
High-latitude coral reefs provide natural laboratories for investigating themechanisms andlimits of coral calcification. While the calcification processes of tropical corals have been studied intensively, little is known about how their temperate counterparts grow under much lower temperature and light conditions. Here, we report the results of a l...
Article
Full-text available
In 2015/16, a marine heatwave associated with a record El Niño led to the third global mass bleaching event documented to date. This event impacted coral reefs around the world, including in Western Australia (WA), although WA reefs had largely escaped bleaching during previous strong El Niño years. Coral health surveys were conducted during the au...
Article
Full-text available
Coral calcification is dependent on both the supply of dissolved inorganic carbon (DIC) and the up-regulation of pH in the calcifying fluid (cf). Using geochemical proxies (δ 11 B, B/Ca, Sr/Ca, Li/Mg), we show seasonal changes in the pH cf and DIC cf for Acropora yongei and Pocillopora damicornis growing in-situ at Rottnest Island (32°S) in Western...
Article
Full-text available
To assess the viability of high latitude environments as coral refugia, we report measurements of seasonal changes in seawater parameters (temperature, light, and carbonate chemistry) together with calcification rates for two coral species, Acrop-ora yongei and Pocillopora damicornis from the southernmost geographical limit of these species at Salm...
Preprint
Full-text available
We observed the bleaching of high-latitude coral species, Acropora yongei and Pocillopora damicornis on the southern side of Rottnest Island (32.0°S, 115.5°E), offshore Perth, Western Australia (WA) in December 2013. Rottnest Island constitutes the southernmost limit at which these coral species have been reported to grow in WA; their growth being...

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