Response to climate change in Antarctic benthos - Environmental change in Antarctic marine ecosystem: study of long term observations and ocean acidification experiments to better understand the destiny of three key benthic species in the Terra Nova Bay littoral (Ross Sea): Adamussium colbecki, Sterechinus neumayeri and Odontaster validus. ...
Climate changes effects include ocean acidification and, possibly, the alteration of frequency and magnitude of climate events, such as El Ni�o. All environmental global changes are supposed to be a major threat to ecosystem, both terrestrial and marine. Despite the amazing bulk of literature on the...
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| Format: | Text |
| Language: | English |
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Universit� degli studi di Genova
2018
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| Online Access: | https://dx.doi.org/10.15167/dell-acqua-ombretta_phd2018-05-30 https://iris.unige.it//handle/11567/929157 |
| Summary: | Climate changes effects include ocean acidification and, possibly, the alteration of frequency and magnitude of climate events, such as El Ni�o. All environmental global changes are supposed to be a major threat to ecosystem, both terrestrial and marine. Despite the amazing bulk of literature on these last, few efforts have been devoted to polar regions, which are actually likely to be the most fragile environments on the Earth. In this work we want to elucidate the response, to environmental modifications, of three Antarctic benthic macroinvertebrates: the scallop Adamussium colbecki, the sea urchin Sterechinus neumayeri and the sea star Odontaster validus, inhabiting the littoral area of Terra Nova Bay (Ross Sea, Victoria Land). Using long term series, we investigated potential correlation between A. colbecki recruitment and environmental variables (sea ice cover duration and El Ni�o events), reporting that A. colbecki recruitment is not affected by these variables. We also performed a manipulative ... |
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