...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Marine ecology progress series >Fate of sinking particles, especially fecal pellets, within the epipelagic zone in the North Water (NOW) polynya of northern Baffin Bay
【24h】

Fate of sinking particles, especially fecal pellets, within the epipelagic zone in the North Water (NOW) polynya of northern Baffin Bay

机译：巴芬湾北部北水（NOW）多年生生物的上表带内下沉颗粒（尤其是粪便颗粒）的命运

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Moored time-programmed sediment traps were deployed from late August 1997 through late July 1999 in the North Water (NOW) polynya to determine the fate of sinking particles in the upper 200 m water column (epipelagic zone). The contribution of phytoplankton carbon (PPC), fecal pellet carbon (FPC), and other unidentified particulate carbon (UPC) to total particulate organic carbon (TPOC) collected in sediment traps varied over the 2 yr. UPC fluxes contributed significantly to TPOC fluxes (ca. 37 to 96%) during the sampling period. FPC fluxes (ca. 20 to 33 mgC m~(-2) d~(-1)) dominated the TPOC fluxes (ca. 45 to 62%) between July and August 1998, when the highest TPOC fluxes occurred. However, during the period of highest primary production (June) more than 99% of the total fecal pellets produced in the epipelagic zone (ca. 74 to 122 mgC m~(-2) d~(-1)) did not reach 200 m. No marked decreases in fecal pellet production in the upper 50 m and flux at 200 m were observed in July. The changing proportion of FPC flux between June and July suggests that losses of fecal pellets due to fragmentation by coprophagy and/or coprorhexy by zooplankton equivalent to ca. 73-121 mgC m~(-2) d~(-1) occurred in the upper mesopelagic layer in June. The fate of sinking particles represented by these fecal pellets can be influenced by the retention processes mediated by coprophagous feeding behavior of zooplankton within the epipelagic layers of the NOW.
机译：从1997年8月下旬至1999年7月下旬，在北水（NOW）多年生植物中部署了按时程安排的沉积物诱集装置，以确定在200 m水柱上部（延流带）下沉颗粒的命运。在过去的两年中，浮游植物碳（PPC），粪便颗粒碳（FPC）和其他未确定的颗粒碳（UPC）对沉积物捕集阱中收集的总颗粒有机碳（TPOC）的贡献变化。在采样期间，UPC通量对TPOC通量有很大贡献（约37％至96％）。在1998年8月至1998年8月，TPPC流量最高时，FPC流量（约20至33 mgC m〜（-2）d〜（-1））占TPOC流量（约45至62％）。然而，在最高的初级生产时期（6月），上表带（约74至122 mgC m〜（-2）d〜（-1））产生的粪便总量超过99％。米在7月，上部50 m的粪便颗粒产量和200 m的通量没有观察到明显的下降。 FPC通量在6月至7月之间变化的比例表明，粪便颗粒的损失是由共浮游物和/或浮游动物的共驱散造成的，大约等于。六月中上弹性层中出现73-121 mgC m〜（-2）d〜（-1）。这些粪便颗粒所代表的沉没颗粒的命运会受到NOW表层上浮游动物共食进食行为介导的滞留过程的影响。

著录项

相似文献

  • 外文文献
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号