Effect of Groundwater Flow on Microbial Activity in a Porous Limestone Groundwater

IF 2.5 3区环境科学与生态学 Q2 ECOLOGY

Ecohydrology Pub Date : 2025-01-30 DOI:10.1002/eco.70000

Shinji Nakaya, Tatsuya Deno, Jun Yasumoto, Ryogo Takada

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引用次数: 0

Abstract

Microbial metabolism in aerobic conditions releases carbon dioxide into the groundwater in the aquifer, while carbon dioxide controls the dissolution/precipitation of calcite and the hydration reaction under field conditions. Higher microbial activity produces more adenosine triphosphate (ATP) and vice versa. In this study, to elucidate the effect of groundwater flow on microbial activity in porous limestone groundwater, the relationship between water chemistry and ATP as a microbial activity index was investigated in groundwater in the Ryukyu limestone groundwater reservoir on Yoron Island, a subtropical island in southwestern Japan. The results in groundwater of a porous limestone groundwater reservoir suggest that (1) microbial activity caused by floating microorganisms in natural groundwater flow depends on dissolved oxygen and reflects that the calcite dissolution/precipitation behaviour and the hydration reaction proceed and (2) fast-flowing groundwater flow induced by artificial pumping suppresses the microbial activity caused by floating microorganisms in groundwater, despite the introduction of sufficient dissolved oxygen necessary for metabolism, and reduces the links between the microbial activity in groundwater and water-rock interaction.

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来源期刊

Ecohydrology 环境科学-生态学

CiteScore

5.10

自引率

7.70%

发文量

116

审稿时长

24 months

期刊介绍： Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management. Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.