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首页> 外文期刊>Journal of marine systems: journal of the European Association of Marine Sciences and Techniques >Dissolved organic matter in the Baltic Sea
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Dissolved organic matter in the Baltic Sea

机译：波罗的海中溶解的有机物

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Several factors highlight the importance of dissolved organic matter (DOM) in coastal ecosystems such as the Baltic Sea: 1) DOM is the main energy source for heterotrophic bacteria in surface waters, thus contributing to the productivity and trophic state of bodies of water. 2) DOM functions as a nutrient source: in the Baltic Sea, more than one-fourth of the bioavailable nutrients can occur in the dissolved organic form in riverine inputs and in surface water during summer. Thus, DOM also supports primary production, both directly (osmotrophy) and indirectly (via remineralization). 3) Flocculation and subsequent deposition of terrestrial DOM within river estuaries may contribute to production and oxygen consumption in coastal sediments. 4) Chromophoric DOM, which is one of the major absorbers of light entering the Baltic Sea, contributes highly to water color, thus affecting the photosynthetic depth as well as recreational value of the Baltic Sea. Despite its large-scale importance to the Baltic Sea ecosystem, DOM has been of minor interest compared with inorganic nutrient loadings. Information on the concentrations and dynamics of DOM in the Baltic Sea has accumulated since the late 1990s, but it is still sporadic. This review provides a coherent view of the current understanding of DOM dynamics in the Baltic Sea. (C) 2014 Elsevier B.V. All rights reserved.
机译：有几个因素凸显了诸如波罗的海之类的沿海生态系统中溶解有机物（DOM）的重要性：1）DOM是地表水中异养细菌的主要能源，因此有助于提高水体的生产力和营养状态。 2）DOM是一种养分来源：在波罗的海，夏季，四分之一以上的生物可利用养分会以溶解的有机形式存在于河流输入物中和地表水中。因此，DOM还支持直接生产（渗透）和间接生产（通过再矿化）的初级生产。 3）在河口内絮凝和随后的地面DOM沉积可能有助于沿海沉积物中的生产和氧气消耗。 4）发色性DOM是进入波罗的海的主要光吸收剂之一，对水的颜色有很大贡献，因此影响了波罗的海的光合深度和娱乐价值。尽管DOM对波罗的海生态系统具有广泛的重要性，但与无机养分含量相比，DOM的重要性却很小。自1990年代末以来，已经积累了有关波罗的海DOM浓度和动态的信息，但仍是零星的。这篇评论提供了对波罗的海中DOM动力学当前理解的一致看法。 （C）2014 Elsevier B.V.保留所有权利。

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