Aquafin CRC Salmon Project - Process Study 3- Water Column Spatial Survey - North West Bay - October 2006

Process Study 3 was undertaken between 03-05 October 2006 in North West Bay. At site 2 a diel study was undertaken during 03-04 October. Samples were collected for the analysis of nutrients, dissolved oxygen, phytoplankton species identification, chlorophyll and carotenoid pigments and the absorption coefficients for dissolved (CDOM) particulate (ap) and detrital or non-algal (ad) components of the water column. Samples were collected at 1500, 1700, 1900 and 2200 on 03 October and 0630, 1000 and 1400 on 04 October. At each collection time, three depths were sampled (0, 10 and 20); an additional sample was also collected from the depth of the chlorophyll max (as determined by the fluorescence profile) when the depth of the chlorophyll max was different to one of the three depths already sampled. A 12 m integrated water column sample was collected at two times during the diel study - 1500 (03 October) and 0630 (04 October). At each collection time, prior to the collection of the samples a CTD (Seacat 4550) profile to near bottom was collected. PLEASE NOTE - The phytoplankton results were updated in June 2012 with a correction. The original biovolume unit in column L and M was incorrect and should have been µL/L. The values in column M and L have been divided by 1000 and the unit mL/L left unchanged. Other values are not affected including CPL and Group CPL.

流程研究3于2006年10月3日至5日在西北湾（North West Bay）开展。在2号采样点，研究人员于10月3日至4日开展了昼夜（diel）采样研究。本次采集的样本用于多项分析：营养盐含量、溶解氧浓度、浮游植物物种鉴定、叶绿素与类胡萝卜素色素分析，以及水柱中溶解态有色溶解有机物（CDOM）、颗粒态（ap）与碎屑/非藻类（ad）组分的吸收系数测定。样本采集时间为10月3日的15:00、17:00、19:00与22:00，以及10月4日的06:30、10:00与14:00。每次采样时，均采集3个深度层的样本（0 m、10 m与20 m）；若叶绿素最大值深度与已布设采样的3个深度层之一不匹配，则额外采集该叶绿素最大值深度处的样本（由荧光剖面测定得到）。本次昼夜研究期间，还在两个时间点采集了12 m水柱整合样本：10月3日15:00与10月4日06:30。每次采样前，均使用温盐深仪（CTD，Seacat 4550）采集近底剖面数据。请注意：浮游植物分析结果已于2012年6月完成修正更新。原L列与M列的生物体积单位存在错误，正确单位应为µL/L。现已将L列与M列的数值除以1000，且保留原单位mL/L不变。其余数值（包括CPL与Group CPL）均未受影响。