Chemical characteristics of the snow pits at Murododaira, Mount Tateyama, Japan

Watanabe, Koichi; Saito, Yoichi; Tamura, Syoko; Sakai, Yuki; Eda, Nagisa; Aoki, M.; Kawabuchi, Manami; Yamada, Hirotsugu; Iwai, Ayumi; Kawada, Kunio

doi:10.3189/172756411797252239

Cited by 19 publications

(7 citation statements)

References 48 publications

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“…Tateyama) in the 2000s were higher than those in the 1990s, indicating that anthropogenic acidic deposition from Asia continent to Mt. Tateyama has continued to increase in conjunction with the increased emissions of SO 2 and NO x over Asia (Osada et al, 2000;Watanabe et al, 2011). Given that soil acidification (pH < 4.0) is still observed at Bijodaira (Table 3), a deficiency of nutrient cations and Al stress at Bijodaira may have continued for at least ~20 years.…”

Section: Historical Evolution Of Soil Acidification At Bijodairamentioning

confidence: 96%

Historical changes in soil acidification inferred from the dendrochemistry of a Tateyama cedar at Bijodaira, Mt. Tateyama, Japan

et al. 2013

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Section: Historical Evolution Of Soil Acidification At Bijodairamentioning

confidence: 96%

Historical changes in soil acidification inferred from the dendrochemistry of a Tateyama cedar at Bijodaira, Mt. Tateyama, Japan

et al. 2013

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“…1) on 21 March 2012. At this location, strong northwesterly winds result in heavy snowfall during the winter and early spring leading to the deposition of aerosol particulates originating from the Asian continent (Watanabe et al, 2011). After a snow pit was dug, the walls of the pit were carefully smoothed to ensure the stratigraphy of the snow layer was undisturbed.…”

Section: Aerosol Particulate Recoverymentioning

confidence: 99%

“…Aerosols are transported in a predictable manner by westerly wind from continental Asia to Japan and are preserved in the snowfall without undergoing local contamination (Osada et al, 2004;Watanabe et al, 2011). Snow cover is therefore regarded as a product of continuous precipitation during the Asian dust season, and can be a useful source of aerosol particulates.…”

Section: Introductionmentioning

confidence: 99%

Atmospheric aerosol deposition influences marine microbial communities in oligotrophic surface waters of the western Pacific Ocean

Maki

Ishikawa

Mastunaga

et al. 2016

Deep Sea Research Part I: Oceanographic Research Papers

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Atmospheric aerosols contain particulates that are deposited to oceanic surface waters.These can represent a major source of nutrients, trace metals, and organic compounds for the marine environment. The Japan Sea and the western Pacific Ocean are particularly affected by aerosols due to the transport of desert dust and industrially derived particulate matter with aerodynamic diameter less than 2.5 µm (PM2.5) from continental Asia. We hypothesized that supplementing seawater with aerosol particulates would lead to measurable changes in surface water nutrient composition as well as shifts in the marine microbial community. Shipboard experiments in the Pacific Ocean involved the recovery of oligotrophic oceanic surface water and subsequent supplementation with aerosol particulates obtained from the nearby coastal mountains, to simulate marine particulate input in this region. Initial increases in nitrates due to the addition of aerosol particulates were followed by a decrease correlated with the increase in phytoplankton biomass, which was composed largely of Bacillariophyta (diatoms), including Pseudo-nitzschia and Chaetoceros species. This shift was accompanied by changes in the bacterial community, with apparent increases in the relative abundance of heterotrophic Rhodobacteraceae and Colwelliaceae in aerosol particulate treated seawater. Our findings provide empirical evidence revealing the impact of aerosol particulates on oceanic surface water microbiology by alleviating nitrogen limitation in the organisms. 4

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“…The snow covers on Mt. Tateyama exhibit the deep depths ranging from 6 m to 10 m in the spring (Osada et al, 2004;Watanabe et al, 2011). The air temperature, which rarely exceeds freezing from November to April, Atmos.…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, the snow cover located at the high altitude avoids windblown contamination by regional soil materials. Some previous researches demonstrated that the chemical compounds (Osada et al, 2004;Watanabe et al, 2011) and bioaerosols (Maki et al, 2011;Tanaka et al, 2011) from continental areas were found in the coloured (dirty) layers of snow cover on Mt. Tateyama.…”

Section: Introductionmentioning

confidence: 99%

Long-range transported bioaerosols captured in snow cover on Mount Tateyama, Japan: Impacts of Asian-dust events on airborne bacterial dynamics relating to ice-nucleation activities

Maki¹,

Furumoto²,

Asahi³

et al. 2018

Preprint

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Abstract. The westerly wind travelling at high altitudes over East Asia transports aerosols from the Asian deserts and urban areas to downwind areas such as Japan. These long-range transported aerosols include not only mineral particles, but also microbial particles (bioaerosols), that impact the ice-cloud formation processes as ice nuclei. However, the the detailed relations of airborne bacterial dynamics to ice nucleation in high-elevation aerosols have not been investigated. Here, we 20 used the aerosol particles captured in the snow cover at the altitudes of 2,450 m on Mt. Tateyama to investigate the sequential changes of ice-nucleation activities and bacterial communities in aerosols and elucidate the relationships between the two processes. After stratification of the snow layers formed on the walls of a snow pit on Mt. Tateyama, snow samples, including aerosol particles, were collected from 70 layers at the lower (winter accumulation) and upper (spring accumulation) parts of the snow wall. The aerosols recorded in the lower parts mainly came from Siberia (Russia), North 25 Asia, and the Sea of Japan, while those in the upper parts showed an increase the Asian-dust particles, which originate from the desert regions and industrial coasts of Asian. The snow samples exhibited high levels of ice nucleation corresponding to the increase of Asian dust particles. Amplicon sequencing analysis using 16S rRNA genes revealed that the bacterial communities in the snow samples predominately included plant associated and marine bacteria (phyla Proteobacteria) during winter; whereas, during spring, when dust events arrived frequently, the majority were terrestrial bacteria of phyla 30 Actinobacteria and Firmicutes. The relative abundances of Firmicutes (Bacilli) showed a significant positive relationship to the ice nucleation in snow samples. Presumably, Asian dust events change the airborne bacterial communities over Mt.Tateyama and carry terrestrial bacterial populations, which possibly induce ice-nucleation activities, thereby indirectly effecting on climate changes.Atmos. Chem. Phys. Discuss., https://doi

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Chemical characteristics of the snow pits at Murododaira, Mount Tateyama, Japan

Cited by 19 publications

References 48 publications

Historical changes in soil acidification inferred from the dendrochemistry of a Tateyama cedar at Bijodaira, Mt. Tateyama, Japan

Historical changes in soil acidification inferred from the dendrochemistry of a Tateyama cedar at Bijodaira, Mt. Tateyama, Japan

Atmospheric aerosol deposition influences marine microbial communities in oligotrophic surface waters of the western Pacific Ocean

Long-range transported bioaerosols captured in snow cover on Mount Tateyama, Japan: Impacts of Asian-dust events on airborne bacterial dynamics relating to ice-nucleation activities

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