Yodnarasri Supaporn, Montani Shigeru, Tada Kuninao, Shibanuma Seiichiro, Yamada Toshiro
Department of Life Sciences, Faculty of Agriculture, Kagawa University, Ikenobe, Miki, Kita, Kagawa, Japan.
Mar Pollut Bull. 2008;57(1-5):149-54. doi: 10.1016/j.marpolbul.2008.04.016. Epub 2008 May 27.
The sediment parameters and nematode assemblages in the intertidal zone of the Hichirippu shallow lagoon, Hokkaido, Japan, were investigated. The objectives of this study were to observe the seasonal variation in the nematodes in the sediment, and to investigate the relationships between the nematodes and environmental factors. Samples were collected bi-monthly from five stations on the tidal flat from April 2003 to February 2004. It was found that the sediment parameters (Chl a concentration, AVS, TOC and TN contents) varied throughout the 10-month study. Fifty-four species of nematodes were found in the study area. The density and biomass of the nematodes varied in accordance with the sediment temperature during the sampling period. In this study, there was a seasonal variation in the nematode assemblage found in the intertidal zone of this shallow lagoon. The important factors affecting this variation were sediment temperature, and food competition among the nematodes themselves. The seasonal variation of the nematode also showed a relationship with the Chl a concentration in the sediment during the sampling period.
对日本北海道日知立普浅泻湖潮间带的沉积物参数和线虫群落进行了调查。本研究的目的是观察沉积物中线虫的季节变化，并研究线虫与环境因素之间的关系。2003年4月至2004年2月，每两个月从潮滩的五个站点采集样本。研究发现，在为期10个月的研究中，沉积物参数（叶绿素a浓度、酸挥发性硫化物、总有机碳和总氮含量）有所变化。研究区域内发现了54种线虫。线虫的密度和生物量在采样期间随沉积物温度而变化。在本研究中，该浅泻湖潮间带发现的线虫群落存在季节变化。影响这种变化的重要因素是沉积物温度以及线虫自身之间的食物竞争。线虫的季节变化还与采样期间沉积物中的叶绿素a浓度有关。
