Cephalopod specimens from RV Investigator voyage IN2017_v04, Tasman Sea, Australia (2017)

<p>Cephalopods were sampled from a cyclonic cold-core eddy in the western Tasman Sea, using midwater trawls from 10th to 12th September 2017 during a research voyage on Australia&#39;s Marine National Facility RV Investigator. Two different types of trawl equipment were used. The first trawl type sampled the upper 100 m of the eddy using a Danish pelagic trawl with 300 μm mesh, towed at approximately 1 m/s (2 knots) for 60 min per trawl (n&#61; 9). The second trawl type was an International Young Gadoid Pelagic Trawl (IYGPT) fitted with a MIDwater Open and Closing net system with six distinct codends to enable depth stratified sampling. The IYGPT trawl has a mesh size of 200 mm reducing to 10 mm, and the codend mesh size was 500 μm. The IYGPT trawl was lowered to 500 m, with the first codend sampling obliquely from the surface to 500 m, and each subsequent codend sampled 100 m depth intervals for approximately 20 min each at 1 m/s, as the trawl returned to the surface.</p>
<p>Data supporting this study are available from a GitHub repository archived using Zenodo https://doi.org/10.5281/zenodo.3980411 - see citation (Murphy et al., 2020). Deployment locations are from event logs stored in the ships data archive.</p>
<p>Voyage details (metadata, projects, other datasets either online or as downloads, publications and reports, events, maps etc) can be accessed at https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey&#61;IN2017_V04
If this data has been used in any products, please acknowledge with the following: We acknowledge the use of the CSIRO Marine National Facility (https://ror.org/01mae9353) in undertaking this research.</p>

<p>头足类生物样本采集自西塔斯曼海的一个气旋性冷核涡旋，于2017年9月10日至12日间，在澳大利亚海洋国家设施RV Investigator号研究船的航行中，采用中层拖网进行。此次研究使用了两种不同的拖网设备。第一种拖网类型采用300微米网目的丹麦浮游拖网，对涡旋上层100米进行采样，以约1米/秒（2节）的速度拖曳，每次拖曳60分钟（n=9）。第二种拖网类型为国际青年鳕鱼浮游拖网（IYGPT），配备MIDwater开放式和闭合式网系统，拥有六个不同的网囊，以便进行深度分层采样。IYGPT拖网的网目大小为200毫米，逐渐减小至10毫米，而网囊的网目大小为500微米。IYGPT拖网降至500米深度，第一个网囊从水面斜向至500米进行采样，随后每个网囊以1米/秒的速度对100米深度的区间进行约20分钟的采样，直至拖网返回水面。</p><p>支持本研究的资料可通过使用Zenodo存档的GitHub仓库获取 https://doi.org/10.5281/zenodo.3980411 - 参见引用（Murphy等，2020）。部署位置来自船只数据存档中的事件日志。</p><p>航行详细信息（元数据、项目、其他在线或可下载的数据集、出版物和报告、事件、地图等）可在https://www.marine.csiro.au/data/trawler/survey_details.cfm?survey=IN2017_V04访问。</p><p>如果此数据已用于任何产品，请按照以下方式进行致谢：我们感谢CSIRO海洋国家设施（https://ror.org/01mae9353）在本项研究中的使用。</p>