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首页> 外文期刊>Estuarine Coastal and Shelf Science >Dynamics of pelagic variables in two contrasting coastal systems in the western Hokkaido coast off Otaru port, Japan
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Dynamics of pelagic variables in two contrasting coastal systems in the western Hokkaido coast off Otaru port, Japan

机译：日本小樽港北海道西部沿海两个对比沿海系统中上层变量的动力学

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摘要

Human impact on adjacent coastal waters, leading to alteration in nutritional environment and hence affecting phytoplankton biomass (Chlorophyll a), will probably be enhanced by the nearby presence of ports. The main goal of this study is to assess the influence of nearby presence of port on phytoplankton biomass build-up and the physical-chemical environmental characteristics in two contrasting coastal systems (Otaru port, S-IN and an exposed coastal area, S-OUT) in the western Hokkaido coast off Otaru port, Japan. Sampling was conducted on "bi-weekly and monthly" basis during the period of September 2006-December 2007 and data comprising 11 pelagic variables were obtained. In most instance, phytoplankton biomass, nutrients' (NH_4, NO_3, PO_4, and Si(OH)_4) concentrations and nutrients' molar ratios were higher at the Otaru port location. Physical parameters (temperature, salinity, hydrogen ion concentration (pH), photosynthetically active radiation (PAR) and dissolved oxygen, (DO)) were not significantly different (P > 0.05) between the two locations. With the exception of salinity, pH and DIC, all variables measured showed significant variation (P < 0.05) with season. While the coefficient of variation (CV) of physical parameters and phytoplankton biomass were relatively higher in Otaru port location (S-IN), the exposed coastal location (S-OUT) showed a higher variation in chemical parameters. Other variables showed different patterns between the two locations. We conclude that ports, due to its activities and restricted circulation favour high nutrient loading and phytoplankton biomass build-up in adjacent coastal systems, thus, suggesting the need for continuous field observation data in order to advance our knowledge on possible future human impact on coastal environment and the need to monitor and control port activities.
机译：人类对邻近沿海水域的影响，导致营养环境的变化，进而影响浮游植物生物量（叶绿素a），可能会由于附近港口的存在而增强。这项研究的主要目的是评估在两个相对的沿海系统（小樽港，S-IN和裸露的沿海地区，S-OUT）附近港口的存在对浮游植物生物量积累的影响以及理化环境特征。 ）位于日本小樽港附近的北海道西部海岸。在2006年9月至2007年12月期间，每两周和每月进行一次抽样，获得了包含11个浮游变量的数据。在大多数情况下，在小樽港口位置，浮游植物的生物量，营养物质的浓度（NH_4，NO_3，PO_4和Si（OH）_4）和营养物质的摩尔比较高。物理参数（温度，盐度，氢离子浓度（pH），光合有效辐射（PAR）和溶解氧（DO））在两个位置之间没有显着差异（P> 0.05）。除盐度，pH和DIC外，所有测得的变量均随季节变化（P <0.05）。虽然在小樽港区（S-IN）的物理参数和浮游植物生物量的变异系数（CV）相对较高，但裸露的沿海地区（S-OUT）的化学参数变异较大。其他变量在两个位置之间显示出不同的模式。我们得出的结论是，港口由于其活动和有限的流通而有利于邻近沿海系统中的高养分负载和浮游植物生物量的积累，因此，建议需要连续的实地观测数据，以增进我们对人类未来可能对沿海地区的影响的认识环境以及监控港口活动的需求。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第3期|477-484|共8页
  • 作者

    Julius I. Agboola; Mario Uchimiya; Isao Kudo; Kazuo Kido; Masato Osawa;

  • 作者单位

    Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Sapporo 060-0810, Japan;

    Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Sapporo 060-0810, Japan;

    Graduate School of Environmental Science, Hokkaido University, Kita 10 Nishi 5, Sapporo 060-0810, Japan Graduate School of Fisheries Sciences, Hokkaido University, Hokodate 041-8611, Japan;

    Department of Marine Geoscience, Geological Survey of Hokkaido, Otaru, Japan;

    Department of Marine Geoscience, Geological Survey of Hokkaido, Otaru, Japan;

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  • 正文语种 eng
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  • 关键词

    sea port; nutrients; Chlorophyll a; anthropogenic; Hokkaido coast;

    机译：海港营养素叶绿素a;人为的北海道海岸;

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