Influence of Wind-Driven Currents Upon Behavior of Fresh Water From Chikugo River in the Inner Part of Ariake Bay

Ishita, Kyoji; Fujiie, Wataru; Yanaga, Junichi; Takemoto, Masatada; Ono, Eiji; Shiratani, Eisaku

doi:10.2208/jscejoe.72.i_688

Cited by 2 publications

(1 citation statement)

References 1 publication

Supporting

Mentioning

Contrasting

Order By: Relevance

“…1, respectively. These transects were selected considering the behavior of freshwater from the Chikugo River flowing toward the inner Ariake Sea [23]. Sampling was conducted during the ebb phase of a moderate tide on June 21 and a spring tide on October 29.…”

Section: Transect Monitoringmentioning

confidence: 99%

Influence of River Inflow and Microbial Activity on Distribution of Dissolved Organic Carbon in the Northern Part of Ariake Sea, Kyushu, Japan

Uchino

Mori

Fukushima

et al. 2021

J. of Wat. & Envir. Tech.

View full text Add to dashboard Cite

To identify the factors controlling the distribution of dissolved organic carbon (DOC) in the northern Ariake Sea (Japan), we measured DOC, salinity and chlorophyll a (Chl. a) along transect lines from the largest river discharging into the Ariake Sea (the Chikugo River) to the opposite shore. The DOC concentration was significantly correlated with salinity, although no correlation was found between the Chl. a concentration and DOC. Thus, river inflow is the primary source of DOC. However, the expected concentration of riverine DOC, represented by the y-intercept of the regression curve between salinity and DOC, was much higher than the DOC concentration of the Chikugo River, suggesting the presence of additional DOC sources to the Ariake Sea. We conducted particulate organic matter (POM) decomposition experiments and observed DOC production after incubation. Thus, microbial POM decomposition may be a source of excess DOC. This study is the first to show that river inflow and microbial decomposition of POM affect the DOC distribution in the northern Ariake Sea.

show abstract

Section: Transect Monitoringmentioning

confidence: 99%

Influence of River Inflow and Microbial Activity on Distribution of Dissolved Organic Carbon in the Northern Part of Ariake Sea, Kyushu, Japan

Uchino

Mori

Fukushima

et al. 2021

J. of Wat. & Envir. Tech.

View full text Add to dashboard Cite

show abstract

Influence of terrestrial organic matter loading on the occurrence of red tides and hypoxia in Isahaya Bay, Japan

TAKASU

2023

Japanese Journal of Limnology (Rikusuigaku Zasshi)

View full text Add to dashboard Cite

In the year 1997, the inner part of Isahaya Bay on the west coast of Ariake Sea was separated from the sea by dikes, leading to the formation of a freshwater reservoir. Since the Isahaya Reclamation Project began in the 1990s, red tides and hypoxia have become more common in the bay. Eutrophic water from the reservoir is frequently discharged into the bay; therefore, nutrient and organic matter in the discharge may promote the occurrence of the red tides and hypoxia in the bay. In this review, I have discussed the impacts of the discharge on matter cycling, and its contribution to the occurrence of red tides and hypoxia in Isahaya Bay. In particular, I have focused on the interaction between organic matter in the discharge and microbes in Isahaya Bay, which is considered to significantly influence the red tides and hypoxia in this bay.

show abstract

Influence of Wind-Driven Currents Upon Behavior of Fresh Water From Chikugo River in the Inner Part of Ariake Bay

Cited by 2 publications

References 1 publication

Influence of River Inflow and Microbial Activity on Distribution of Dissolved Organic Carbon in the Northern Part of Ariake Sea, Kyushu, Japan

Influence of River Inflow and Microbial Activity on Distribution of Dissolved Organic Carbon in the Northern Part of Ariake Sea, Kyushu, Japan

Influence of terrestrial organic matter loading on the occurrence of red tides and hypoxia in Isahaya Bay, Japan

Contact Info

Product

Resources

About