CLASSIFICATION OF RIVER ESTURIES USING PHYSICAL ENVIRONMENT AND BENTHIC FAUNA BASESD ON ECOREGION CONCEPT

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  • Ecoregionの概念に基づく底生動物相及び物理環境による河口域の類型化
  • Ecoregion ノ ガイネン ニ モトズク テイセイドウ モッソウ オヨビ ブツリ カンキョウ ニ ヨル カコウイキ ノ ルイケイカ

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Abstract

 The establishment of a conservation strategy or restoration goal for river estuaries requires knowledge of potential biota or possible habitat characteristics. We classified the Japanese river estuaries using physical indicators related to river energy, tide energy and wave energy, based on ecoregion decided by similarity of benthos. Japanese estuaries were classified into three ecoregions (Japan Sea, the Pacific Ocean and west Nankai). Finally, we classified nine types of estuary in three ecoregions by river energy, tide energy and wave energy. This classification is basic unit for conservation, because the potential biota or possible habitat is homogeneous in the same classification.

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