...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Continental Shelf Research: A Companion Journal to Deep-Sea Research and Progress in Oceanography >Spatial-temporal distribution of dimethylsulfide in the subtropical Pearl River Estuary and adjacent waters
【24h】

Spatial-temporal distribution of dimethylsulfide in the subtropical Pearl River Estuary and adjacent waters

机译：亚热带珠江口及邻近海域二甲基硫的时空分布

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

Three cruises were carried out in the Pearl River Estuary (PRE) and adjacent northern South China Sea (SCS) in July 2000, May 2001 and November 2002 to collect seawater samples. Concentrations of dimethylsulfide (DMS), chlorophyll a (chl a), nutrients (N, P, Si), salinity and temperature in seawater were measured. The spatial and temporal distribution of DMS concentrations showed larger fluctuations compared with other estuaries reported in the literature. The mean DMS concentrations in three cruises ranged from 0.05 nM (nM = 10(-9) mol l(-1)) to 52.7 nM (n = 76). The higher concentrations of DMS were observed at the mouth of the estuary. In wet season, high variations of environmental salinity might stimulate algae to release more DMSP to adjust osmotic pressure. Most of these DMS 'hotspots' were coincident with the area of high chl a concentrations, although no significant correlation between DMS and chl a was found. The values of DMS/chI a showed a clear trend along the north to the south transect, increasing sharply from estuary to shelf and open sea. There was no significant correlation between DMS and salinity in the wet season (July and May), but a significant positive correlation in the dry season. High primary production and more iron deposition implied that the NE monsoon might influence DMS production in the dry season. (c) 2005 Elsevier Ltd. All rights reserved.
机译：2000年7月，2001年5月和2002年11月，在珠江口（PRE）和邻近的南中国海北部（SCS）进行了3次巡游，以收集海水样本。测量了海水中二甲硫（DMS），叶绿素a（chla），养分（N，P，Si），盐度和温度的浓度。与文献中报道的其他河口相比，DMS浓度的时空分布表现出更大的波动。在三个巡航中的平均DMS浓度范围从0.05 nM（nM = 10（-9）mol l（-1））到52.7 nM（n = 76）。在河口处观察到较高的DMS浓度。在雨季，环境盐分的高变化可能会刺激藻类释放更多的DMSP来调节渗透压。尽管未发现DMS与chl a之间的显着相关性，但大多数DMS“热点”与chl a浓度高的区域一致。 DMS / chI a的值沿北向南断面呈明显趋势，从河口至陆架和公海急剧增加。湿季（7月和5月）的DMS与盐度之间没有显着的相关性，而在旱季中DMS与盐度之间没有显着的正相关。高初级产量和更多的铁沉积意味着东北季风可能会影响干旱季节的DMS生产。 （c）2005 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
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