Effects of dam construction on sediment phosphorus variation in a semi-enclosed bay of the Seto Inland Sea, Japan

Guangzhe Jin, Shin ichi Onodera, Atsuko Amano, Mitsuyo Saito, Yuta Shimizu, Takaharu Satou

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

This study investigated the effects of dam construction on sediment phosphorus concentrations in a semi-enclosed bay in western Japan. Long sediment core samples spanning over 100 years were collected from the bay, and their P fractions were analyzed. Sediment P concentrations and the P accumulation rate in an artificial lake increased after the construction of a coastal dam in 1959. The amount of P accumulated in the 60 years after the dam construction was ~1.7 times that prior to the dam construction. Moreover, concentrations of mobile forms of P, primarily redox-sensitive P species, were higher in freshwater sediments above the dam than in saline sediments below the dam. The redox-sensitive forms of P in freshwater sediments increased sharply after the dam construction, from 100 to ~900μg/g, accompanied by a decrease in chloride (Cl-) concentrations to

Original languageEnglish
Pages (from-to)191-200
Number of pages10
JournalEstuarine, Coastal and Shelf Science
Volume135
DOIs
Publication statusPublished - Dec 20 2013

Fingerprint

dams (hydrology)
dam construction
inland sea
Japan
phosphorus
sediments
freshwater sediment
dam
sediment
accumulation rate
sediment core
chloride
effect
chlorides
lakes

Keywords

  • Eutrophication
  • Lake reclamation
  • Phosphorus
  • Sediments
  • Sequential extraction

ASJC Scopus subject areas

  • Aquatic Science
  • Oceanography

Cite this

Effects of dam construction on sediment phosphorus variation in a semi-enclosed bay of the Seto Inland Sea, Japan. / Jin, Guangzhe; Onodera, Shin ichi; Amano, Atsuko; Saito, Mitsuyo; Shimizu, Yuta; Satou, Takaharu.

In: Estuarine, Coastal and Shelf Science, Vol. 135, 20.12.2013, p. 191-200.

Research output: Contribution to journalArticle

Jin, Guangzhe ; Onodera, Shin ichi ; Amano, Atsuko ; Saito, Mitsuyo ; Shimizu, Yuta ; Satou, Takaharu. / Effects of dam construction on sediment phosphorus variation in a semi-enclosed bay of the Seto Inland Sea, Japan. In: Estuarine, Coastal and Shelf Science. 2013 ; Vol. 135. pp. 191-200.
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