Sprightly Voyage SP 11/79 Biological Data overview

This record describes the biological datasets obtained on Sprightly Voyage SP 11/79. The data were obtained as part of a time series study of Eddy "J" in the Tasman Sea off the New South Wales Coast in October 1979. At this time the eddy was centred on approximately 34 deg 30 min S and 153 deg 30 min E. Stations inside and outside the eddy were sampled for hydrology/nutrients, phytoplankton fluorescence and particle size, zooplankton (including organic nitrogen), and midwater fishes using the RMT (rectangular midwater trawl) net. Underway data were also collected on surface salinity, night-time light intensity, in vivo fluorescence and particle size, and thermal structure of the water was investigated using XBTs. Within the eddy, the most abundant family of fishes in the midwater trawls was family Myctophidae (lanternfishes). Decapod crustacea, salps and squid were also enumerated. Catch data from the midwater trawls (41 operations) are currently held by the CSIRO Marine and Atmospheric Research Data Centre in Hobart.本记录记述了Sprightly航次SP 11/79所获取的生物数据集。该数据集为1979年10月针对新南威尔士州沿岸外塔斯曼海‘J’涡旋开展的时间序列研究的一部分。彼时该涡旋的中心位置约为南纬34度30分、东经153度30分。研究人员利用RMT（矩形中层拖网，rectangular midwater trawl）网对涡旋内外的站位进行了采样，检测指标涵盖水文/营养盐、浮游植物荧光特性与粒径、浮游动物（含有机氮组分）以及中层鱼类。同时还采集了走航观测数据，包括表层盐度、夜间光强、活体荧光特性与粒径，并利用XBTs（投弃式温深仪，Expendable Bathythermograph）对水体热结构开展了探测。在涡旋内部的中层拖网采样中，数量最丰富的鱼类类群为灯笼鱼科（Myctophidae，俗称灯笼鱼）。此外还对十足目甲壳动物、樽海鞘以及鱿鱼进行了计数统计。目前，41次中层拖网作业所获取的渔获数据由位于霍巴特的澳大利亚联邦科学与工业研究组织（CSIRO）海洋与大气研究数据中心托管。