Anthropogenic CO₂ emissions to the atmosphere have increased not only air temperature, but also precipitation, which has intensified freshening of the sea surface in some parts of the ocean. As a result, many regions, including the Yellow Sea, have been confronted with a decrease in salinity. In this study we investigated the effects of low salinity on the number of dead individuals and behaviour of Haustorioides koreanus, a gammarid amphipod living in the upper and sandy regions of the tidal flats of the west and south coasts of South Korea. The experiment was conducted over 32 days with four different salinity conditions: 30 (control), 27, 24 and 21 psu (n = 8 each). Although the number of dead individuals, the moulting frequency and burrowing and swimming behaviours of H. koreanus did not significantly differ, the time taken for food detection was increased significantly by low salinity (21 psu). A decrease in the speed of food detection suggests that low salinity can reduce the amphipod’s ability to detect chemical cues.

人为排放到大气中的CO ₂不仅增加了空气温度，而且增加了降水，这加剧了海洋某些部分海面的新鲜度。结果，包括黄海在内的许多地区都面临着盐度下降的问题。在这项研究中，我们调查了低盐度对生活在韩国西海岸和南海岸的潮汐带上部和沙地中的一种γ-线足类两栖动物——Haustorioides koreanus死亡人数和行为的影响。实验在32种不同的盐度条件下进行了32天，分别为：30（对照），27、24和21 psu（n = 8）。虽然死亡个体的数量，换羽频率和穴居和游泳行为H.朝鲜球没有显著不同，采取的食品检测的时间是由低矿化度（21 PSU）显著上升。食物检测速度的降低表明低盐度会降低两栖动物检测化学线索的能力。