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| Godet, Claire; Robuchon, Marine; Leroy, Boris; Cotté, Cedric; Baudena, Alberto; Da Silva, Ophélie; Fabri-ruiz, Salomé; Lo Monaco, Claire; Sergi, Sara; Koubbi, Philippe. |
| Distinguishing regions based on the geographic distribution of both abiotic factors and living organisms is an old but still actual central issue for biogeographers. In the Southern Ocean, the few existing regionalization studies have been carried out either at very large scales or on the relatively small region around the Sub-Antarctic islands of Kerguelen and the Crozet archipelagos. However, regionalization studies at meso-scales (100–300 km) covering the Indian part of the Southern Ocean and adjacent South Indian Ocean are scarce. These waters, ranging from the Subtropical to the polar region, are home to large populations of well-studied top predators that depend on the biomass of less known mid-trophic level species such as zooplankton. To fill those... |
| Tipo: Text |
Palavras-chave: Bioregionalization; Southern Ocean; Indian Ocean; Pelagic ecosystem; Zooplankton; Continuous plankton recorder. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00643/75474/76309.pdf |
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| Leroy, Boris; Dias, Murilo S.; Giraud, Emilien; Hugueny, Bernard; Jézéquel, Céline; Leprieur, Fabien; Oberdorff, Thierry; Tedesco, Pablo A. |
| Aim To define the major biogeographical regions and transition zones for freshwater fish species. Taxon Strictly freshwater species of actinopterygian fish (i.e. excluding marine and amphidromous fish families). Methods We based our bioregionalization on a global database of freshwater fish species occurrences in drainage basins, which, after filtering, includes 11,295 species in 2,581 basins. On the basis of this dataset, we generated a bipartite (basin‐species) network upon which we applied a hierarchical clustering algorithm (the Map Equation) to detect regions. We tested the robustness of regions with a sensitivity analysis. We identified transition zones between major regions with the participation coefficient, indicating the degree to which a basin... |
| Tipo: Text |
Palavras-chave: Actinopterygians; Biogeographical regions; Biogeography; Bioregionalization; Bioregions; Dispersal; Freshwater fish; Transition zones; Vicariance; Zoogeographical regions. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00514/62589/66985.pdf |
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