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首页> 外文期刊>Estuarine Coastal and Shelf Science >Physical factors influencing immature-fish communities in the surf zones of sandy beaches in northwestern Kyushu Island, Japan
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Physical factors influencing immature-fish communities in the surf zones of sandy beaches in northwestern Kyushu Island, Japan

机译：影响日本九州岛西北部沙滩冲浪区未成熟鱼类群落的物理因素

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摘要

We aim to understand the relationships between physical conditions and characteristics of the immature-fish community in surf zones of sandy beaches. Therefore, we obtained fish samples between March 2007 and February 2008 and analyzed certain physical conditions in the surf zones of 21 sandy beaches on the coastline of the northwestern Kyushu Island, Japan. We collected a total of 83 species and 6458 immature individuals. In a BIO-ENV analysis, the highest correlation was observed between fish assemblage and S20 (i.e., the slope from the shoreline to the sites where the depth was 20 m) and current velocity (CV) values. Stepwise multiple linear regression analyses revealed that the number of species and individuals decrease with an increase in the S20 and CV values. These results show that species richness and the abundance of immature-fish increase under shelving and calm conditions. Thus, immature-fish assemblages are strongly influenced by the prevailing physical conditions. Moreover, in six of the 10 dominant species, a negative correlation was observed between CV and abundance. On the other hand, S20 was found to be the explanatory variable only in the case of the most dominant species, i.e., Cymnogobius breunigii. Furthermore, a positive correlation was observed between S1 (i.e., the slope from the shoreline to the sites where the depth was 1.0 m at the mean tidal level) and median particle size (i.e., MPS of the sediments) and the abundances of Sillago japonica and Favonigobius gymnauchen, respectively, and a negative correlation with salinity, in the case of Acanthogobius lactipes. We conclude that the characteristics of the fish community in surf zones on sandy beaches are determined by not only the shelving and calm conditions, which influence fish assemblages and abundances, but also the habitat diversity, which influences the diversity of fish species.
机译：我们旨在了解身体条件与沙滩冲浪区未成熟鱼类群落特征之间的关系。因此，我们获得了2007年3月至2008年2月之间的鱼样本，并分析了日本九州岛西北海岸线21个沙滩冲浪区的某些物理条件。我们总共收集了83个物种和6458个未成熟个体。在BIO-ENV分析中，观察到鱼群与S20（即从海岸线到深度为20 m的站点的坡度）和当前速度（CV）值之间的相关性最高。逐步多元线性回归分析显示，物种和个体数量随着S20和CV值的增加而减少。这些结果表明，在搁置和平静条件下，物种丰富度和未成熟鱼类的丰度增加。因此，不成熟的鱼群会受到当时身体状况的强烈影响。此外，在10种优势物种中的6种中，CV与丰度之间呈负相关。另一方面，仅在最占优势的物种，即C兰（Cymnogobius breunigii）的情况下，才发现S20是解释变量。此外，观察到S1（即从海岸线到平均潮汐深度深度为1.0 m的站点的坡度）与中值粒径（即沉积物的MPS）与Sillago japonica的丰度之间呈正相关。对于Acanthogobius lactipes，它们分别与Favonigobius Gymnauchen和盐度呈负相关。我们得出的结论是，沙滩冲浪区鱼类群落的特征不仅取决于搁置和平静的条件，这些条件影响鱼类的聚集和丰度，还取决于栖息地的多样性，后者影响鱼类的多样性。

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  • 来源
    《Estuarine Coastal and Shelf Science》 |2010年第3期|467-476|共10页
  • 作者

    Ryutei Inui; Takashi Nishida; Norio Onikura; Katsuhisa Eguchi; Motoyoshi Kawagishi; Masaya Nakatani; Shin Oikawa;

  • 作者单位

    Fishery Research Laboratory, Graduate School of Bioresomce and Bioenvironmental Science, Kyushu University, 2506 Tsuyazaki, Fukutsu, Fukuoka 811-3304, Japan;

    Japan Pulp & Paper Research Institute, Inc., Tokodai 5-13-11, Tsukuba, Ibaraki 300-2635, Japan;

    Fishery Research Laboratory, Graduate School of Bioresomce and Bioenvironmental Science, Kyushu University, 2506 Tsuyazaki, Fukutsu, Fukuoka 811-3304, Japan;

    Saga Prefectural Fisheries Research and Development Center, 6966 Nagoya, Chinzei, Karatsu, Saga 847-0401, Japan;

    Fishery Research Laboratory, Graduate School of Bioresomce and Bioenvironmental Science, Kyushu University, 2506 Tsuyazaki, Fukutsu, Fukuoka 811-3304, Japan;

    Fishery Research Laboratory, Graduate School of Bioresomce and Bioenvironmental Science, Kyushu University, 2506 Tsuyazaki, Fukutsu, Fukuoka 811-3304, Japan;

    Fishery Research Laboratory, Graduate School of Bioresomce and Bioenvironmental Science, Kyushu University, 2506 Tsuyazaki, Fukutsu, Fukuoka 811-3304, Japan;

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  • 正文语种 eng
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  • 关键词

    physical conditions; sandy beach; surf zone; fish assemblage; fish community;

    机译：身体状况;沙滩;冲浪区鱼群;鱼社区;

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