The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean
The concentration, size distribution and dry deposition flux of microbes in atmospheric aerosols over the marginal seas and Northwest Pacific Ocean
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边缘海和西北太平洋大气气溶胶中微生物的浓度、粒径分布和干沉降通量
DOI：
10.1016/j.atmosres.2021.105906
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发表时间：
2021-11
期刊：
影响因子：
--
通讯作者：
Lijie Dong
中科院分区：
文献类型：
--
作者：
Jianhua Qi;Yidan Yin;Daizhou Zhang;Hongtao Li;Lijie Dong
海洋上空生物气溶胶粒子的浓度和通量对于了解海洋生态系统中空气微生物的生态意义具有重要意义。海洋上空的气载微生物仍然没有特征，特别是边缘海和公海上空的微生物之间的差异。于2014年和2016年春季在青岛（QD），黄渤海（YBS）和西北太平洋（NWPO）的三个航次中采集了大气气溶胶样品。根据显微镜计数评估样品中的总空气微生物（TAM）。TAM浓度为（4.07 ± 1.42）× 105cells·m-3 2014年和2016年NWPO分别为（2.75 ± 0.91）× 105 cells·m− 3，显著低于QD（（8.02 ± 4.04）× 105cells·m− 3）（14.04 ± 23.95）× 105 cells·m− 3（2014年和2016年分别为）由于微生物的大陆来源，但2014年西北太平洋上空的TAM浓度显著高于YBS上空（p< 0.01）。西北太平洋海域微生物浓度受风速、风向、水平离岸距离和离海距离与总输运距离之比（RS）的影响，而洋底海域微生物浓度受气温、NO、NO2、离海距离、水平离岸距离和RS的影响。与海洋样品相比，沿海样品的TAM受气温、相对湿度、气压、PM2. 5、PM10、SO2和O3等多种因素的影响。沙尘暴事件显著增加了TAM的浓度，增加了1.6-49倍，并改变了样品中TAM的粒径分布。在西北太平洋，TAM的干沉降通量为8.83 × 107 ~ 5.12 × 108 cells·m-2·d-1，与长江口的1.20 × 108 ~ 2.63 × 108 cells·m-2·d-1接近。我们的研究结果表明，空气中的微生物通过大气沉积输入到海洋中，这可能对海洋生态系统产生重要影响。
The concentration and flux of biological aerosol particles over oceans are important for understanding the ecological implications of airborne microbes in marine ecosystems. Airborne microbes over oceans remain uncharacterized, especially the difference between those over the marginal seas and those over the open oceans. Atmospheric aerosol samples were collected over Qingdao (QD), the Yellow and Bohai Seas (YBS) and the Northwest Pacific Ocean (NWPO) during three cruises in the spring of 2014 and 2016. The total airborne microbes (TAM) in the samples were assessed based on microscope counts. The TAM concentration was (4.07 ± 1.42) × 105cells·m−3and (2.75 ± 0.91) × 105cells·m−3over the NWPO in 2014 and 2016, respectively, significantly lower than that over QD ((8.02 ± 4.04) × 105cells·m−3and (14.04 ± 23.95) × 105cells·m−3in 2014 and 2016, respectively) due to the continental source of microbes, but the TAM concentration over the NWPO in 2014 was significantly higher than that over the YBS (p< 0.01). The microbe concentration over the NWPO was affected by wind speed and direction, the horizontal offshore distance and the ratio of the distance over the sea to the total transport distance (RS), but the microbe concentration over the YBS was affected by air temperature, NO, NO2, the distance over the sea, the horizontal offshore distance and RS. Compared with those in the marine samples, the TAM in coastal samples was affected by many factors, such as air temperature, relative humidity, atmospheric pressure, PM2.5, PM10, SO2and O3. A dust event significantly increased the concentration of TAM by a factor of 1.6–49 and changed the size distribution of TAM in the samples. The dry deposition flux of TAM was 8.83 × 107–5.12 × 108cells·m−2·d−1over the NWPO, close to the flux of 1.20 × 108–2.63 × 108cells·m−2·d−1over the YBS. Our results suggest that airborne microbes are input to the ocean via atmospheric deposition, which may have important impacts on marine ecosystems.
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南海大气气溶胶微生物浓度和活性特征及影响因素
影响因子：
1.6
作者：
Qi Jianhua;Yin Yidan;Xie Jiamin;Li Mengzhe;Ding Xue;Li Hongtao
通讯作者：
Li Hongtao
影响因子：
--
作者：
Yan Zhang;Qi Yu;Weichun Ma;Limin Chen
通讯作者：
Yan Zhang;Qi Yu;Weichun Ma;Limin Chen
边缘海和西北太平洋大气气溶胶中无机氮和磷的干沉降通量
影响因子：
5.5
作者：
Jianhua Qi;Yu Yang;Yao Xiaohong;Yuan Gang;Gao Huiwang
通讯作者：
Gao Huiwang
DOI：
10.1002/2016jd025028
发表时间：
2016-10
期刊：
Journal of Geophysical Research: Atmospheres
影响因子：
--
作者：
Kotaro Murata;Daizhou Zhang
通讯作者：
Kotaro Murata;Daizhou Zhang
影响因子：
3.7
作者：
P. Pitta;M. Kanakidou;N. Mihalopoulos;S. Christodoulaki;Panagiotis D. Dimitriou;C. Frangoulis;A. Giannakourou;Margarita Kagiorgi;A. Lagaria;P. Nikolaou;N. Papageorgiou;S. Psarra;Ioulia Santi;M. Tsapakis;A. Tsiola;K. Violaki;G. Petihakis
通讯作者：
P. Pitta;M. Kanakidou;N. Mihalopoulos;S. Christodoulaki;Panagiotis D. Dimitriou;C. Frangoulis;A. Giannakourou;Margarita Kagiorgi;A. Lagaria;P. Nikolaou;N. Papageorgiou;S. Psarra;Ioulia Santi;M. Tsapakis;A. Tsiola;K. Violaki;G. Petihakis