Current status of the megabenthic community in coastal Fukushima Prefecture, Japan, in the wake of the Great East Japan Earthquake
Current status of the megabenthic community in coastal Fukushima Prefecture, Japan, in the wake of the Great East Japan Earthquake
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东日本大地震后日本福岛县沿海巨型底栖动物群落的现状
DOI：
10.1016/j.marenvres.2018.07.005
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发表时间：
2018
影响因子：
3.3
通讯作者：
Horiguchi T
中科院分区：
文献类型：
--
作者：
Kodama K;Aramaki T;Horiguchi T
2013年至2017年，我们在日本福岛沿岸进行了独立于渔业的底拖网调查，以研究2011年地震、海啸和核灾难后的巨型底栖动物群落结构。尽管我们没有观察到生物多样性的实质性变化，但总丰度和生物量在几年间波动，主要是因为小虾和鱿鱼的丰度或生物量暂时增加，或中型鱼(即河豚和比目鱼)和大型弹鳍鱼类的丰度或生物量的变化。棘皮动物的丰度和生物量在所有地区都有所下降。中南部近海样带甲壳动物丰度和生物量极低。我们的结果表明，巨型底栖动物群落没有明显的恢复，福岛海岸外的巨型底栖动物物种可能正在经历繁殖或补充失败。需要进一步的研究来揭示这些巨型底栖动物群落变化背后的因果因素。
We conducted fisheries-independent bottom-trawl surveys along the coast of Fukushima, Japan, from 2013 to 2017 to study the megabenthic community structure after the 2011 earthquake, tsunami, and nuclear disaster. Although we observed no substantial changes in biodiversity, total abundance and biomass fluctuated among years, primarily because of temporary increases in the abundance or biomass of small shrimp and squid, or variations in abundance or biomass of mid-sized fishes (i.e. puffers and flatfishes) and large elasmobranchs. Echinoderm abundance and biomass decreased in all areas. Crustacean abundance and biomass were extremely low in the central and southern offshore transects. Our results suggest that there has been no recognizable recovery in the megabenthic community, and megabenthic species off the coast of Fukushima might have been experiencing reproductive or recruitment failure. Further research is needed to reveal the causal factors behind changes in these megabenthic communities.