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首页> 外文期刊>Journal of nannoplankton research: A publication of the International Nannoplankton Association >Coccolithophore biocoenosis, thanatocoenosis, and taphocoenosis in a marginal basin in the Gulf of California
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Coccolithophore biocoenosis, thanatocoenosis, and taphocoenosis in a marginal basin in the Gulf of California

机译：加利福尼亚州海湾的边缘盆地中的Coccolthophore生物凸症，梭菌化和口味轴病

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Since 2002, we have been monitoring the coccolithophore plankton assemblages, associated carbonate flux, and accumulation of coccoliths in surface sediments in a pristine marginal basin located close to a productive upwelling area in the Gulf of California. During the study period, cell density varied from less than 1 × 10~3 cells 1~(-1) to 125 × 10~3 cells 1~(-1) in the upper photic zone, and from 0.5 × 10×3 cells 1~(-1) to 31 × 10~3 cells 1~(-1) in the lower photic zone, respectively. In general, the highest cell density occurred during late winter-early spring. The total flux of coccoliths in the trap showed minimum fluxes (2 ×10~6 coccoliths m~(-2) d~(-1)) in spring-summer and maximum fluxes in autumn-winter (13 ×10~9 coccoliths m~(-2) d~(-1)). A total of 85 species from 44 genera were identified. Species richness varied from 57 species in plankton samples (dominated by Emiliania huxleyi in winter-spring and Gephyrocapsa oceanica in summer-autumn) to 55 species in sediment trap samples (dominated by G. oceanica and E. huxleyi) and 8 species in surface sediment samples (dominated by G. oceanica). Our data clearly show that species richness is significantly reduced in sediment assemblages because, on an average, only 10% of the plankton species are preserved in sediments.
机译：自2002年以来，我们一直在靠近加利福尼亚州海湾的富有成效的升高区域的原始边缘盆地中的Coccolethophore Plankton组装，相关碳酸盐通量和Coccolith的积累。在研究期间，细胞密度在上光区中的小于1×10〜3个细胞1〜（-1）至125×10〜3个细胞1〜（-1），以及0.5×10×3细胞1〜（-1）至31×10〜3个细胞1〜（-1）分别在较低光区中。一般来说，最高的细胞密度发生在冬季早期春季晚期。陷阱中的Coccoliths的总通量显示出春夏和秋季冬季最大助焊剂（13×10〜9 Coccoliths M春季最大助熔剂（2×10〜6个Coccoliths m〜（-2）d〜（-1）） 〜（-2）d〜（-1））。确定了44个属的85种。物种丰富度在普拉克斯特样本（冬季春季和Gephyrocapsa Oceanica的冬季春天和Gephyrocapsa Oceanica主导的57种）不同于沉积物陷阱样品的55种（由G. Oceanica和E. Huxleyi占据）和表面沉积物中的8种。样品（由G. Oceanica主导）。我们的数据清楚地表明，在沉积物组合中，物种丰富性显着降低，因为平均只有10％的浮游生物物种被保存在沉积物中。

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