Oxygen consumption and inorganic nutrient fluxes of deep-water hexactinellid and demosponges from New Zealand collected during SONNE cruise SO254@en

During R/V Sonne cruise SO254 around New Zealand (January-February 2017), deep-sea sponges were incubated in-situ and ex-situ to measure oxygen consumption, inorganic nutrient fluxes, bacterial and phospholipid-derived fatty acid (PLFA) composition. Inorganic nutrient (ammonium, nitrite, nitrate, silicate, phosphate) fluxes and oxygen consumption in the sponge incubations were calculated by linear regression analyses of concentrations measured at the begin and the end of the 5 h incubations (nutrient fluxes) or of continuous measurements of oxygen concentrations (oxygen consumption).2017年1—2月，在研究船桑尼号（R/V Sonne）执行的SO254航次中，于新西兰周边海域开展了深海海绵的原位（in-situ）与异位（ex-situ）培养实验，以测定其耗氧量、无机营养盐通量、细菌群落组成及磷脂脂肪酸（PLFA）组成。海绵培养实验中的无机营养盐（铵态氮、亚硝态氮、硝态氮、硅酸盐、磷酸盐）通量与耗氧量，分别通过5小时培养周期起始与结束时测定的浓度（用于营养盐通量计算），或是连续氧浓度监测数据（用于耗氧量计算）的线性回归分析完成计算。