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Ecological performance of construction materials subject to ocean climate change

Artificial structures will be increasingly utilized to protect coastal infrastructure from sea-level rise and storms associated with climate change. Although it is well documented that the materials comprising artificial structures influence the composition of organisms that use them as habitat, little is known about how these materials may chemically react with changing seawater conditions, and what effects this will have on associated biota. We investigated the effects of ocean warming, acidification, and type of coastal infrastructure material on algal turfs. Seawater acidification resulted in greater covers of turf, though this effect was counteracted by elevated temperatures. Concrete supported a greater cover of turf than granite or high-density polyethylene (HDPE) under all temperature and pH treatments, with the greatest covers occurring under simulated ocean acidification. Furthermore, photosynthetic efficiency under acidification was greater on concrete substratum compared to all other materials and treatment combinations. These results demonstrate the capacity to maximise ecological benefits whilst still meeting local management objectives when engineering coastal defense structures by selecting materials that are appropriate in an ocean change context. Therefore, mitigation efforts to offset impacts from sea-level rise and storms can also be engineered to alter, or even reduce, the effects of climatic change on biological assemblages.
- University of Hong Kong China (People's Republic of)
- University of Adelaide Australia
- Southern Cross University Australia
- Department of Agriculture and Fisheries Australia
- University of Hong Kong China (People's Republic of)
marine infrastructure, Marine infrastructure, Climate Change, Oceans and Seas, ocean acidification, 551, ocean warming, Ocean warming, Materials Testing, Climate change, Seawater, Water Pollutants, Construction Materials, Ocean acidification, Filamentous algae, filamentous algae, Polyethylene, Environmental Sciences
marine infrastructure, Marine infrastructure, Climate Change, Oceans and Seas, ocean acidification, 551, ocean warming, Ocean warming, Materials Testing, Climate change, Seawater, Water Pollutants, Construction Materials, Ocean acidification, Filamentous algae, filamentous algae, Polyethylene, Environmental Sciences
citations This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).21 popularity This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.Top 10% influence This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).Average impulse This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.Top 10%
