Nitrogen Budget at the Natural Tidal Flat and Influence of Rainfall -on the Estuary Tidal Flat in Wakayama-

安彦, 和田; 進, 失持; 俊介, 藤原; 研, 平井; のどか, 濱田; 健司, 金子; 信義, 杉野; 孝昌, 重松; 敏也, 小池

doi:10.2208/jscejg.62.41

Cited by 1 publication

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“…Various investigations about the Wakagawa estuary have been conducted for a long time. However, until recent years, most of them have been related to biota [9,10] and nutrients such as nitrogen [11,12]. There seems to be no investigation regarding metal contamination.…”

Section: Introductionmentioning

confidence: 99%

Cu, Zn, Fe AND Mn CONCENTRATIONS OF SOME GASTROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

Kubo¹

2023

GEOMATE

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The Wakagawa estuary tidal flat was heavily polluted by industrial wastewater in the past. Since then, organic pollution has decreased due to inflow regulations, etc., and it is now an important wetland with rich biota. However, it is expected that metallic elements remain in the tidal flat and affect benthic organisms. Therefore, some benthic animals, mainly sediment feeders, which are expected to be strongly affected by the sediment, were collected in 2016. Then the concentrations of some metallic elements in their bodies were measured. In this paper, copper, zinc, iron, and manganese concentrations in the soft bodies of six benthic gastropod species are reported. It was suggested that soil zinc concentration was not uniform and some areas were high in this tidal flat, especially in places where water flow is obstructed topographically and mud tends to accumulate. Some degree of partial accumulation in the sediment within this tidal flat was suggested for copper, iron and manganese. Exclusive or partial detritus feeders showed higher metal concentrations than microalgae feeders. Among gastropods, three species of genus Batillaria (B. attramentaria, B. multiformis and B. zonalis) for copper; Batillaria multiformis, B. zonalis and Pirenella nipponica for zinc; Batillaria zonalis and Pirenella nipponica for iron and manganese, are considered useful as an indicator species.

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Section: Introductionmentioning

confidence: 99%

Cu, Zn, Fe AND Mn CONCENTRATIONS OF SOME GASTROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

Kubo¹

2023

GEOMATE

View full text Add to dashboard Cite

show abstract

Nitrogen Budget at the Natural Tidal Flat and Influence of Rainfall -on the Estuary Tidal Flat in Wakayama-

Cited by 1 publication

References 7 publications

Cu, Zn, Fe AND Mn CONCENTRATIONS OF SOME GASTROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

Cu, Zn, Fe AND Mn CONCENTRATIONS OF SOME GASTROPODS IN THE WAKAGAWA ESTUARY TIDAL FLAT

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