Heterotrophic bacterial abundance, bacterial respiration and production measured from water bottle samples during METEOR cruise M156@en

This dataset includes measured and calculated data over the epipelagic layer (0-200 m depth) of 25 stations with 14 of them inside or in the vicinity of a cyclonic eddy that formed off Mauritania along the ∼ 900 km zonal corridor between Mauritania and the Cabo Verde islands in the eastern Tropical North Atlantic during the M156 cruise on the RV Meteor from July 3rd to August 1st 2019. Bacterial biomass production rates were measured through the incorporation of labelled leucine (3H) using the microcentrifuge method (Kirchman et al., 1985, https://doi.org/10.1128/aem.49.3.599-607.1985; Smith and Azam, 1992). Bacteria carbon demand and growth efficiency were calculated from bacterial production and respiration rates. Dittmar, T., Cherrier, J., and Ludwichowski, K. U.: The analysis of amino acids in seawater, in: Practical guidelines for the analysis of seawater, edited by: Wurl, O., 67–78, CRC Press, Boca Raton, ISBN: 978-1-4200-7306-5, 2009. Evans, C. A., O'Reily, J. E., and Thomas, J. P.: A handbook for measurement of Chl a and primary production, College Station, TX, Texas A and M University, ISBN:9780948277078, 0948277076, 1987. Gargas, E.: A Manual for Phytoplankton Primary Production Studies in the Baltic, The Baltic Marine Biologists, 2, 88 pp. Ed. Gargas E. (Hørsholm, Denmark: Water Quality Institute), 1975. Smith, D. and Azam, F.: A simple, economical method for measuring bacterial protein synthesis rates in seawater using, Mar. Microb. Food Webs, 6, 107–114, 1992.本数据集涵盖2019年7月3日至8月1日期间，“流星号”（RV Meteor）科考船M156航次在热带北大西洋东部海域采集的25个站位的真光层（epipelagic layer，0~200米水深）实测与计算数据。该采样海域位于毛里塔尼亚与佛得角群岛之间约900公里的纬向通道内，其中14个站位位于毛里塔尼亚外海形成的气旋式涡旋（cyclonic eddy）内部或其邻近海域。细菌生物量生产速率通过微量离心法，利用氚标记亮氨酸（³H）的掺入量进行测定（Kirchman等，1985，DOI:10.1128/aem.49.3.599-607.1985；Smith与Azam，1992）。细菌碳需求与生长效率则基于细菌生产速率与呼吸速率计算得到。本数据集依托的参考文献如下：1. Dittmar T、Cherrier J与Ludwichowski K U：《海水中氨基酸的分析》，载于Wurl O主编《海水分析实用指南》，佛罗里达州博卡拉顿：CRC出版社，2009年，第67-78页，ISBN：978-1-4200-7306-5。2. Evans C A、O'Reily J E与Thomas J P：《叶绿素a（Chl a）与初级生产力测定手册》，德克萨斯州学院站：德克萨斯农工大学，1987年，ISBN：9780948277078、0948277076。3. Gargas E：《波罗的海浮游植物初级生产力研究手册》，《波罗的海生物学家丛书》第2卷，共88页。Gargas E主编（丹麦霍尔绍姆：水质研究所），1975年。4. Smith D与Azam F：《一种测定海水细菌蛋白质合成速率的简便经济方法》，《海洋微生物食物网》，1992年，第6卷，第107-114页。