By Jean-Pierre Debenay
Numbering approximately 10000 species, Foraminifera represent the main diversified team of shelled microorganisms within the ocean. also they are probably the most useful instruments for environmental evaluate and tracking courses. This advisor by means of Jean-Pierre Debenay offers an outline of the environmental stipulations round New Caledonia, an obtainable advent to Foraminifera, and a precis of the learn that has been conducted from the island state. It additionally describes multiple thousand species of Foraminifera amassed round New Caledonia, accompanying every one access with SEM micrographs and notes on its distribution. equipped into teams to make it effortless to spot each one species, it will likely be a pragmatic reference.
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Additional info for A guide to 1,000 foraminifera from southwestern Pacific : New Caledonia
They considered Tretomphaloides a junior synonym of Neoconorbina and Tretomphalus a junior synonym of Rosalina. PARKER (2009) suggested reinstating Tretomphalus for Rosalina-Neoconorbina-like species that develop a float chamber with Tretomphaloides as a junior synonym. He observed that the apertural position in these species, inset slightly from the periphery, is intermediate between Neoconorbina and Rosalina. This short summary about the status of Tretomphalus clearly shows that only future studies that combine lifecycle studies with morphological and molecular systematics can truly resolve this issue.
They are dominated by porcelaneous species. The two most abundant species in the lagoon are Marginopora vertebralis and Alveolinella quoyi, which are widely distributed, together with a few species (fig. 33), while other species, also distributed all over the lagoon, are present only in discontinuous patches (fig. 34). Southern shelf Amphistegina papillosa Ammobaculites reophaciformis Nubeculina advena Heterolepa praecincta Neoeponides procerus Placopsilina bradyi Depressions Heterolepa praecincta Elphidium craticulatum Operculinella sp.
30 | A Guide to 1,000 Foraminifera from Southwestern Pacific: New Caledonia Foraminifera in the southwestern lagoon General distribution The global contribution of foraminifera to the sediment has been presented above (fig. 7). 5 mm, the species richness appears to be related to oceanic influence with more than 25 species on the southern shelf, near the passes, and in the axis of the lagoon. The lower richness is found in the bays, with fewer than 5 species in the bays of Saint Vincent and Prony.