OTN Loan - Salmonids in Trondheimsfjorden

This is the OBIS extraction of the Ocean Tracking Network and Norwegian University of Science and Technology (NTNU) OTN Loan - Salmonids in Trondheimsfjorden, consisting of the release tagging metadata, i.e. the location and date when the tagged animal was released, and summarized detection events of tagged individuals.
If readers are interested in the source dataset they may also inquire with the project PIs as listed here or on the OTN web site (https://members.oceantrack.org/project?ccode=V2LTROD).
Abstract:The aim of the Trondheimfjord project is to get better knowledge of marine migrations of anadrome species (Atlantic salmon, Brown trout) from rivers draining to the Trondheim Fjord. The fjord is a national salmon fjord (a kind of MPA), which means that salmon aquaculture is prohibited. But outside the fjord, one of the most intensive areas for open net pen salmon aquaculture in Norway is located.The two overall hypotheses to test are that a) Atlantic salmon only spent few days in the protected fjord system before heading out to the open sea and b) that brown trout stay within the protected fjord system during the whole marine feeding season. Additionally, we will explore in more details the individual migratory behaviour of the tagged fish and related that to physiological status, previous growth rates, sex and body size. The outcome will be crucial knowledge for regional coastal zone planning and will be of high value as background information when the Norwegian traffic light system, which regulate the aquaculture production, will be evaluated in the years to come.

本数据集为海洋生物地理信息系统（Ocean Biogeographic Information System, OBIS）提取自海洋跟踪网络（Ocean Tracking Network, OTN）与挪威科技大学（Norwegian University of Science and Technology, NTNU）的OTN划拨数据集——特伦德拉格峡湾内的鲑科鱼类数据，包含放流标记元数据（即标记个体的放流地点与放流日期）以及标记个体的检测事件汇总结果。
若读者欲获取原始数据集，可联系此处列出的项目首席研究员（Principal Investigator, PI），或访问OTN官网（https://members.oceantrack.org/project?ccode=V2LTROD）进行咨询。
摘要：特伦德拉格峡湾项目的研究目标为深入了解注入特伦德拉格峡湾的河流所产出的溯河洄游物种（大西洋鲑、褐鳟）的海洋洄游行为。该峡湾为国家级鲑鱼保护峡湾（属于海洋保护区（Marine Protected Area, MPA）范畴），因此禁止开展鲑鱼养殖活动；而在峡湾外侧，坐落着挪威规模最为密集的开放式网箱鲑鱼养殖区域之一。
本次研究需验证两项核心假说：其一，大西洋鲑仅会在受保护的峡湾系统内停留数日，便会前往开阔海域；其二，褐鳟会在整个海洋索饵季全程停留于该受保护峡湾系统内。此外，本研究还将深入分析标记鱼类的个体洄游行为，并将其与个体生理状态、既往生长速率、性别及体型相关联。
本研究成果将为区域海岸带规划提供关键科学依据，同时在未来挪威用于监管水产养殖生产的"交通灯系统"评估工作中，亦可作为高价值的背景参考资料。