Environmental controls affecting the composition and distribution of deep sea benthic foraminifera were analyzed in the Panama Basin (Eastern Equatorial Pacific). For this study, results of the analysis of a new set of 33 core-top samples from the upper-lower slope (714–3819 mbsf) were integrated with previous data from this area.

The composition of the foraminiferal assemblages resembles a typical deep sea association, illustrating a close relationship with dissolved oxygen at the seafloor and indirectly with surface productivity. Low oxygen content and organic matter influx, as inferred in the eastern Panama Basin, are connected to terrigenous supply and seasonal upwelling on the Panama Bight and southern Costa Rica. Buliminids, bolivinids, and Epistominella spp. are common elements of the continental slope. In addition, physiographic aspects such as the type of substrate, turbidity fluxes, and bottom currents also exert control over some of the described taxa and defined morphogroups. A broad exploration of the infaunal/epifaunal relationships in the basin does not suggest a clear relationship with dissolved oxygen content. However, there are fluctuations in the proportion of some of the defined epifaunal morphogroups and selected taxa (e.g. Cibicidoides wuellerstorfi, Chilostomella oolina, and Hoeglundina elegans, among others) along the Carnegie Ridge. These changes are explained by the variable physiographic features (surface upwelling, strong bottom currents) that coalesce in this part of the Panama Basin.

Furthermore, re-evaluation of the foraminiferal morphogroups in two deep sea cores that comprised the last 25 ky, indicate that some taxa of the recent samples (Cassidulina spp. and Siphouvigerina peregrina, among others) reacted to paleoproductivity and bottom current fluctuations at the end of the Last Glacial Maximum and the Younger Dryas.

Despite the lack of ecological data in the foraminiferal assemblages for a large proportion of the Panama Basin, the application of selected taxa or morphogroups as proxies for paleoceanographic conditions is promising.

在巴拿马盆地（赤道东太平洋）分析了影响深海底栖有孔虫组成和分布的环境控制措施。在本研究中，分析了一组新的33个来自上-下坡度（714-3819 mbsf）的岩心顶部样品的结果，并与该地区以前的数据相结合。

有孔虫组合的组成类似于典型的深海联系，说明与海底溶解氧密切相关，与表面生产力间接相关。如在巴拿马盆地东部所推断的那样，低氧含量和有机质涌入与巴拿马湾和哥斯达黎加南部的陆源供应和季节性上升有关。Buliminids，bolivinids和Epistominellaspp。是大陆坡的常见元素。另外，诸如底物类型，浊度通量和底电流的生理学方面也控制了一些所述的分类单元和确定的吗基。对该盆地的基础/表观关系的广泛探索并没有表明与溶解氧含量的明确关系。但是，沿着卡耐基岭，某些已定义的表生真菌形态群和选定的分类群（例如Cibicidoides wuellerstorfi，Chilostomella oolina和Hoeglundina elegans等）的比例存在波动。这些变化可以通过在巴拿马盆地这一部分合并的可变的地貌特征（地表上升流，强烈的底流）来解释。

此外，对包括后25 ky在内的两个深海核心的有孔虫形态基团的重新评估表明，最近的一些样品（Cassidulina spp。和Siphouvigerina peregrina等）对古生产力和底电流波动产生了最终反应。最后的冰川最大值和年轻的树妖。

尽管在巴拿马盆地的大部分地区，有孔虫组合中都缺乏生态数据，但将选定的分类群或形态群作为古海洋学条件的代理还是有希望的。