Using acoustic telemetry to study Endangered Atlantic Whitefish (Coregonus huntsmani) ecology in native and novel habitats.

This is the OBIS extraction of the Ocean Tracking Network and Department of Fisheries and Oceans Canada (DFO) Using acoustic telemetry to study Endangered Atlantic Whitefish (Coregonus huntsmani) ecology in native and novel habitats., 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=AWF).
Abstract:Atlantic Whitefish persist in one watershed on Earth, the Petite Rivière near Bridgewater, Nova Scotia, and the species is genetically, culturally, and ecologically unique. Despite being one of the first species protected under Canada's Species at Risk Act (SARA) when it came into force in 2003, they remain Endangered. The most prominent threats to their persistence are habitat deterioration due to anthropogenic impacts such as migration barriers and invasive species increasing competition and predation of Atlantic Whitefish. However, the species is so rare and poorly understood that fundamental questions about the ecology of Atlantic Whitefish are still limiting the effective implementation of the SARA recovery program. A subset of 80 captive-bred whitefish reared in the Dalhousie University Aquatron facility was tagged with acoustic transmitters (Thelma Biotel 2MP9 and Innovasea V9-TP) and released into Millipsigate Lake, the Petite Riviere, or the estuary of the river (i.e. below the migration barriers) in spring 2024. Data analysis will focus on changes between range size and depth use of whitefish in the lake and potential migratory movements of fish released in the estuary. Results will help to identify critical habitats, determine whether the species maintains anadromous instincts, and identify migration barriers. Results will also be used to investigate post-release success and make comparisons between several release strategy elements (i.e. location, season, native/novel system). This study will provide the information needed to identify critical habitats and support the effective implementation of a recovery plan to resist the wild extinction of this Nova Scotia endemic species.

本数据集为海洋跟踪网络（Ocean Tracking Network, OTN）与加拿大渔业与海洋部（Department of Fisheries and Oceans Canada, DFO）产出的海洋生物地理信息系统（Ocean Biogeographic Information System, OBIS）提取数据集，该项研究利用声学遥测技术（acoustic telemetry），探究濒危大西洋白鲑（Coregonus huntsmani）在原生与新生栖息地中的生态特征。数据集包含放流标记元数据（即标记个体的放流位置与日期）以及标记个体的检测事件汇总数据。
若读者希望获取原始数据集，可联系此处列出的项目首席研究员（Principal Investigators, PIs），或通过OTN官网（https://members.oceantrack.org/project?ccode=AWF）进行咨询。
摘要：大西洋白鲑仅存于地球上一处流域——新斯科舍省布里奇沃特附近的佩蒂特河（Petite Rivière），该物种在遗传、文化与生态层面均具有独特性。尽管该物种是2003年《加拿大濒危物种法》（Species at Risk Act, SARA）生效时首批受到保护的物种之一，但目前仍处于濒危状态。对其存续最突出的威胁来自人类活动导致的栖息地退化，包括洄游障碍以及入侵物种加剧了对大西洋白鲑的竞争与捕食压力。但该物种极为稀有且研究程度极低，关于大西洋白鲑生态的基础问题仍制约着《濒危物种法》恢复计划的有效落地。2024年春季，研究人员对达尔豪西大学Aquatron实验设施繁育的80尾人工繁育大西洋白鲑进行了声学发射器（acoustic transmitter）标记，所用发射器型号为Thelma Biotel 2MP9与Innovasea V9-TP，并将其放流至米尔皮西盖特湖（Millipsigate Lake）、佩蒂特河或该河河口（即洄游障碍下方区域）。数据分析将聚焦于湖内白鲑的活动范围与栖息深度变化，以及河口放流个体的潜在洄移行为。研究结果将有助于确定关键栖息地，判断该物种是否保留溯河洄游习性（anadromous instincts），并识别洄游障碍。同时，研究结果还将用于评估放流后存活率，并对比不同放流策略要素（包括放流位置、季节、原生/新生栖息地系统）的效果差异。本研究将为确定关键栖息地提供必要数据，并助力有效落实恢复计划，以阻止这一新斯科舍省特有物种走向野生灭绝。