The effects of climate change on                 marine calcifying organisms     Penelope Donohue, Murray Roberts, Maggie ...
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The effects of climate change on marine calcifying organisms - Penelope Donohue

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Centre for Marine Biodiversity & Biotechnology Away Day 2012. Presentation by PhD student Penelope Donohue.

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  • Primary organism of focus is the free-living red coralline algaelithothamnionglaciale (maerl or rhodolith)The photograph in the background is the maerl bed at Loch Sween – our field site – important for biodoversity, ecosystem function and provides a nursery ground for important commercial species.Interesting because it is a marine calcifyer (thought to be susceptable to OA) but also a photosynthesising organism (maybe benefit from increases in CO2)….will there be physiological trade-offs???Primary focus is increasing CO2 and temperature – these are major threats for coastal marine systemsUsing this systems based approach it is suggested that we will provide more detail about the specific biological processes affected by GCC which will help to interpret the responses we see at the whole organism levelWe are using in situ experiments and laboratory based short and long term studies.Other systems I am working on include L. pertusa the deep sea coral and also Padinagymnaspora a tropical calcifying reef algae.
  • The effects of climate change on marine calcifying organisms - Penelope Donohue

    1. 1. The effects of climate change on marine calcifying organisms Penelope Donohue, Murray Roberts, Maggie Cusack, Nicholas Kamenos• Free- living red coralline algae - Lithothamnion glaciale• Ocean acidification and increasing temperature• Systems based approach - molecular physiology – proteomics 5 cm

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