Informasi Detil Paper |
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| Judul: | Introduction the Impacts of Ocean Acidification and Climate Change to Intertidal Marine Gastropods |
| Penulis: | Sedercor Melatunan || email: info@mx.unpatti.ac.id |
| Jurnal: | Triton Vol. 8 no. 2 - hal. 51-68 Tahun 2012 [ Perikanan & IK ] |
| Keywords: | Ocean acidification, climate change, carbon dioxide, calcium carbonate. |
| Abstract: | Future changes of ocean pH and temperature caused by elevated CO2 in to the atmosphere are predicted to impact marine biodiversity. Acidic water indicated by low pH induces dissolution rates of aragonites and calcites – the two forms of calcium carbonate useful as building block material for calcified organisms to grow – insufficiently uptake. Various studies pronounced that reduction pH disrupts metabolic rates and acid base balance that lead to metabolic depression, whilst increase temperature affects organisms thermo- tolerance capacity. Even though decreased metabolic rates were associated with metabolic depression, a strategy to match oxygen demand and availability, however prolong exposure to these stressors affected growth, survival and reproduction rates. Increase CO2 and temperature also magnitude muscle contraction and altered end- product metabolites such as succinic and lactic acids as well as reduced energy nucleotides in the cells, indicating an increased reliance on anaerobic metabolism. Elevated CO2 and temperature have also affected plastic responses, a fundamental mechanism of many marine gastropods to cope environmental variability. Shells were more globular to increase lodgement of water and defend desiccation rates. Despite level of impacts may vary from species to species and populations based on geographical distributions, however, physiologically, it always came at cost. |
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