By Jean-Pierre Debenay

ISBN-10: 2709917297

ISBN-13: 9782709917292

ISBN-10: 2856536980

ISBN-13: 9782856536988

Numbering approximately 10000 species, Foraminifera represent the main various staff of shelled microorganisms within the ocean. also they are the most invaluable instruments for environmental evaluate and tracking courses. This consultant by means of Jean-Pierre Debenay offers an outline of the environmental stipulations round New Caledonia, an available advent to Foraminifera, and a precis of the learn that has been performed from the island kingdom. It additionally describes a couple of thousand species of Foraminifera amassed round New Caledonia, accompanying each one access with SEM micrographs and notes on its distribution. geared up into teams to make it effortless to spot each one species, it will likely be a realistic reference.

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Extra resources for A guide to 1,000 foraminifera from southwestern Pacific : New Caledonia

Example text

The last area of test deposition, along the south-east coast of Ouen Island, indicates a southward longshore transport. The distribution of silt and clay is consistent with the sediment transport direction deduced from the distribution of O. bartshi, and the combination of both sets of information allows a better comprehension of sedimentary dynamic in front of the bay (fig. 40 right). This approach should be of interest owing to the Goro Nickel Mining Project that is developing in the area and will require an extensive environmental assessment.

35]). Some species are found at intermediate depths: Alveolinella quoii, Nummulites venosus, Amphistegina lessonii, Heterostegina depressa, Anomalinella rostrata, and Operculina ammonoides. Other species are rare in the lagoon, found only in the deepest areas: Amphistegina quoyi, Heterolepa praecincta, Amphistegina papillosa, Amphistegina radiata, Amphistegina bicirculata, Lenticulina gibba, Ammobaculites reophaciformis, Nubeculina advena, Heterostegina operculinoides, Neoeponides procerus, and Cycloclypeus carpenteri.

The distribution of the test, west and east of the entrance of the bay can be explained by the strong alternating tidal currents through Woodin channel and along the southern coast of Grande Terre. The presence of tests on the deeper southern shelf, to the south, suggests a gravity-driven sediment transport on the southern shelf, down to deeper low energy areas. The last area of test deposition, along the south-east coast of Ouen Island, indicates a southward longshore transport. The distribution of silt and clay is consistent with the sediment transport direction deduced from the distribution of O.

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