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| Riekenberg, Philip M.; Briand, Marine J; Moléana, Thibaud; Sasal, Pierre; Van Der Meer, Marcel T. J.; Thieltges, David W.; Letourneur, Yves. |
| Stable isotopes of carbon and nitrogen characterize trophic relationships in predator–prey relationships, with clear differences between consumer and diet (discrimination factor Δ13C and Δ15N). However, parasite–host isotopic relationships remain unclear, with Δ13C and Δ15N remaining incompletely characterized, especially for helminths. In this study, we used stable isotopes to determine discrimination factors for 13 parasite–host pairings of helminths in coral reef fish. Differences in Δ15N values grouped according to parasite groups and habitat within the host with positive Δ15N values observed for trematodes and nematodes from the digestive tract and variable Δ15N values observed for cestodes and nematodes from the general cavity. Furthermore, Δ13C... |
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| Ano: 2021 |
URL: https://archimer.ifremer.fr/doc/00682/79431/82031.pdf |
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| Petrick, Benjamin F.; Mcclymont, Erin L.; Marret, Fabienne; Van Der Meer, Marcel T. J.. |
| The Southeast Atlantic Ocean is an important component of global ocean circulation, as it includes heat and salt transfer into the Atlantic through the Agulhas leakage as well as the highly productive Benguela upwelling system. Here we reconstruct sea surface temperatures (SSTs) from Ocean Drilling Program (ODP) Site 1087 in the Southeast Atlantic to investigate surface ocean circulation patterns during the late Pleistocene (0-500 ka). The U-37(K)' index and dinoflagellate cyst assemblages are used to reconstruct SSTs, delta D-alkenone is used to reconstruct changes in sea surface salinity, and mass accumulation rates of alkenones and chlorine pigments are quantified to detect changing marine export productivity. The greatest amplitude of SST warming... |
| Tipo: Text |
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| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00351/46242/46108.pdf |
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