Kobe University Research Center for Inland Seas, 1-1 Rokkodai, Nadaku, Kobe 657-8501, Japan.
Oregon State University, HMSC-EPA, 2111 SE Marine Science Drive, Newport, OR 97365-5260, USA.
Mar Pollut Bull. 2018 Jul;132:74-81. doi: 10.1016/j.marpolbul.2017.06.053. Epub 2017 Jul 3.
Since 2012 a huge amount of marine debris caused by the 2011 Great East Japan Earthquake and Tsunami has been arriving on Northeastern Pacific shores. Often healthy macroalgae were attached to them, which may become introduced to the Northwestern Pacific coasts and disturb their ecosystems. In order to elucidate the diversity of those macroalgae, and to establish a basis for detecting their new introduction to Northwestern Pacific coasts, we have examined their species diversity by morphology and genetic identifications. We have obtained gene sequences for 205 specimens, and identified 49 species as Japanese Tsunami Marine Debris (JTMD) macroalgae. Most of them are known to be distributed in Japan and showed identical or very closely related genetic types to those of Tohoku, and confirmed to be originated from the area. Several species such as Ceramium sungminbooi, Ectocarpus crouaniorum, Polysiphonia koreana, etc. have not been reported from Japan, but this is explained by the shortage of taxonomic information.
自 2011 年东日本大地震和海啸以来，大量的海洋碎片已抵达东北太平洋海岸。大量的海洋碎片上经常附着着健康的大型藻类，这些藻类可能会被引入西北太平洋海岸，并扰乱其生态系统。为了阐明这些大型藻类的多样性，并为检测它们在西北太平洋海岸的新引入建立基础，我们通过形态学和遗传鉴定研究了它们的物种多样性。我们已经获得了 205 个标本的基因序列，并鉴定出 49 种为日本海啸海洋碎片（JTMD）大型藻类。其中大多数在日本有分布，显示出与东北地区相同或非常接近的遗传类型，并证实其来源于该地区。一些物种，如 Ceramium sungminbooi、Ectocarpus crouaniorum、Polysiphonia koreana 等，在日本没有报道，但这可以用分类学信息的缺乏来解释。
