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Management of stranded eelgrass and macroalgae along the German Baltic coastline

机译：管理德国波罗的海沿岸搁浅的鳗草和大型藻类

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摘要

Marine vegetation washed ashore recreationally used beaches is a widespread subject of discussion. This paper presents an innovative and cost-saving monitoring method of stranded eelgrass and macroalgae, combined with surveys and a literature review, to provide baseline criteria for recommendations for an advanced beach wrack management. Between May and October 2010 around 4900 t (dry matter) of beach wrack were accumulated in the study area. Accumulation took place on 8.3% of all days. The material is habitat, a nutrient source for beach ecosystems but also a nuisance for a fraction of beach tourists. Seaside resorts rake beaches mechanically almost every day and remove on average 269 kg/m beach wrack mixed with sand during the summer season. This costs up to 38 Euro per meter beach per year. German beach wrack management is a patchwork of local solutions with no general strategy. Beach wrack is either disposed or re-used as fertilizer, compost or soil improver in agriculture. More than 7.8 million Euros were invested in research for improvements and cost reduction in beach wrack management. Costs for beach cleaning are still an economic burden for spa resorts. The legal situation for biomass treatment is a hindering factor for innovation, and an ecosystem approach to management is regarded too expensive. We recommended overcoming current hindrances and throwbacks in beach management by zoning, seasonable limitations, a two-step beach cleaning, and improved environmental education. In terms of scientific research, a more detailed understanding of beach wrack nearshore drifting processes, and the establishment of baseline criteria is necessary.
机译：冲刷到岸上休闲使用的海滩的海洋植被是一个广泛讨论的话题。本文提出了一种搁浅的鳗cost和大型藻类的创新且节省成本的监测方法，并结合调查和文献综述，为高级滩涂管理的建议提供了基线标准。在2010年5月至2010年10月之间，研究区域累积了约4900吨（干物质）海滩残骸。累计发生了8.3％。该材料是栖息地，是海滩生态系统的营养来源，但对一部分海滩游客也很有害。海滨度假胜地几乎每天都会用机械耙动海滩，在夏季，平均每年可清除269公斤/米的海滩沙杂物。每年每米海滩的费用高达38欧元。德国的海滩残骸管理是局部解决方案的拼凑而成，没有通用的策略。海滩残骸可以作为肥料，堆肥或土壤改良剂进行处理或再利用。超过780万欧元投资于研究，以改善和降低海滩残骸管理的成本。海滩清洁的费用仍然是温泉度假村的经济负担。生物质处理的法律状况是创新的障碍因素，而生态系统管理方法被认为过于昂贵。我们建议通过分区，季节性限制，两步式海滩清洁和改善环境教育来克服海滩管理中的当前障碍和退步。在科学研究方面，有必要对海滩残骸近岸漂流过程进行更详细的了解，并建立基线标准。

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  • 来源
    《Ocean & coastal management》 |2012年第3期|p.1-9|共9页
  • 作者

    Matthias Mossbauer; Inga Haller; Sven Dahlke; Gerald Schemewski;

  • 作者单位

    Leibniz Institute for Baltic Sea Research, Wamemiinde, Seestrafie 15, 18057 Rostock, Germany;

    EUCC - The Coastal Union Germany, SeestraJSe 15, 18057 Rostock, Germany;

    University of Greifswald, Schwedenhagen 6, J8565 Kloster/Hiddensee, Germany;

    Leibniz Institute for Baltic Sea Research, Wamemiinde, Seestrafie 15, 18057 Rostock, Germany;

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