Hot spring drainage impact on fish communities around temperate estuaries in southwestern Japan
Hot spring drainage impact on fish communities around temperate estuaries in southwestern Japan
复制标题
温泉排水对日本西南部温带河口周围鱼类群落的影响
DOI：
10.1016/j.ejrh.2015.12.060
复制
发表时间：
2017
期刊：
影响因子：
--
通讯作者：
M.
中科院分区：
文献类型：
--
作者：
Yamada;M.;Shoji;J.;Ohsawa;S.;Mishima;T.;Hata;M.;Honda;H.;Masahiko Fujii;M.;Taniguchi;M.
研究区域我们在日本大分县的别府进行了调查。在日本温泉众多的地区，温泉水流入河流，然后流入沿岸地区。研究重点温泉水对河流和沿岸地区生态系统的影响尚不清楚。我们评估了温泉排水对河口附近鱼类群落的影响。新的水文洞察因子分析结果表明，温泉排水对河流的影响在河流之间存在差异。温泉排水流入河流对浮游植物的影响大于生活排水流入，这增加了浮游植物的数量。此外，温泉排水通过增加食物供应和水温，为尼罗河罗非鱼（一种外来物种）创造了更好的栖息地。
Study regionWe investigated in Beppu, Oita Prefecture, Japan. Hot spring drainage flows into a river and then flows into coastal areas in this area, a region in Japan with many hot springs.Study focusThe effects of that drainage on river and coastal area ecosystems remain unclear. We evaluated the impact of the hot spring drainage on fish communities near the estuary.New hydrological insightsFactor analysis results obtained using water quality data show that the scale of the hot spring drainage influence on rivers differs among rivers. The inflow of hot spring drainage into the rivers affects phytoplankton more than the inflow of domestic drainage, which increases the amount of phytoplankton. Furthermore, hot spring drainage creates a better habitat for Nile tilapia, a foreign species, by increasing food availability and water temperature.