和歌山県田辺湾内ノ浦におけるコアマモの現存量と形態的変化に対する環境要因の影響

DOI 日本農学文献記事索引 Web Site 被引用文献3件 参考文献47件

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タイトル別名
  • Influence of Environmental Factors on Biomass and Morphological Variability of <I>Zostera japonica</I> on the Coast of Uchinoura, Tanabe Bay, Wakayama, Japan
  • ワカヤマケン タナベワン ウチノウラ ニ オケル コアマモ ノ ゲンソンリョウ ト ケイタイテキ ヘンカ ニ タイスル カンキョウ ヨウイン ノ エイキョウ

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抄録

The current velocity and sediment properties were examined on the coast of Uchinoura, Wakayama Prefecture to better understand the biomass and morphological variability of Zostera japonica population at former and last luxuriant period. The samples were obtained from intertidal sampling stations on July 20th and September 29th, 2006, former and last luxuriant period, respectively. The results indicate that morphological characteristic of July as the former luxuriant period, when population structure of above-ground is developed, adequately reflects environmental factors. The morphological characteristics of Z. japonica in calm condition with low current velocity and high silt-clay content was long vegetative shoot, sparse stands and low below-/above-ground biomass ratio. The population showing this variability was formed in inner part of the studied area. On the contrary, the population in storm condition, such as outer part of the studied area, had short vegetative shoot, dense stands and high below-/above-ground biomass ratio. In river mouth, the values of environmental factors and population properties were intermediate between the inner and the outer part, but not significantly different from two parts. The result may be due to wide range of variable coefficient suggesting influence of factors not included in this examination, such as siltation and light attenuation by riverine input.

収録刊行物

  • 水産増殖

    水産増殖 59 (1), 29-40, 2011

    日本水産増殖学会

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