Timeseries of environmental and sluice operation data for adjusted tidal barrier management (aangepast spuibeheer) to promote upstream glass eel migration in Flanders (Belgium)
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The European eel (Anguilla anguilla L.) population has experienced a severe decline in recent decades, with restricted upstream migration of glass eels identified as a major contributing factor. In Flanders, glass eel potential entries are located at the IJzer (Nieuwpoort), the “Sas Slijkens” sluice complex (Ghent-Ostend Canal), and the complex in Zeebrugge (Afleidingskanaal van de Leie and Leopoldkanaal). To facilitate migration, adjusted tidal barrier management - slightly opening sluice gates during incoming tide - was evaluated between 2016 and 2025. This dataset contains monitoring results of electrical conductivity, discharge and precipitation and sluice management practices at these sites, providing insight into the effectiveness of adjusted sluicing measures and the trade-off between eel migration opportunities and salinization risks. The data currently stored is from 2020 to August 2025. The folder data is subdivided in: conductiviteit (conductivity data collected by VMM as provided at waterinfo.be) KGO: VMM conductivity data of the Kanaal Gent-Oostende (KGO) NE: VMM conductivity data of the Noordede (NE) Ijzer: VMM conductivity data of the Ijzer CTD (conductivity data collected by INBO) 2019 to 2025 (per canal further subdived in date that divers were read out; 1 file per site) AKL (Afleidingskanaal van de Leie) Ijzer KGO (Kanaal Gent-Oostende) LK (Leopoldkanaal) ND (Kanaal Nieuwpoort-Duinkerke) NE (Noordede) NP (Kanaal Nieuwpoort-Plassendale) debiet (discharge data collected by VMM as provided at waterinfo.be) One file per site intern (all data that was created within the R project) ctd (all INBO conductivity data brought together and standardized) ctd_vmm (all VMM conductivity data brought together and standardized) debiet ((all VMM discharge data brought together and standardized) metadata (treshold values, coordinates and links between stations) conductiviteitslimieten (tresholds for terminating the adjusted tidal barrier management and returning to regular tidal barrier management) coordinaten_ctd (coordinates of all INBO ctd divers) link_conductiviteit_debiet_neerslag (which VMM conductivity data is connected to which discharge and precipitation data) link_ctd_debiet_neerslag (which INBO conductivity data is connected to which discharge and precipitation data) neerslag (precipitation data collected by VMM as provided at waterinfo.be) One file per site spuibeheer (adjusted tidal barrier management records) extern ruw (as provided by the operators of the sluices) verwerkt_in_excel (corrections were made) intern os_summary_yyyy (summarized data per year) os_cleaned (cleaned data of ATBM at the finest resolution)
欧洲鳗鲡（Anguilla anguilla L.）种群在近数十年间经历了严重的种群衰退，其中玻璃鳗溯河洄游受阻被认定为主要促成因素之一。在佛兰德斯地区，玻璃鳗潜在洄游入口分别位于伊泽尔河（Ijzer，尼乌波特段）、“萨斯斯利肯斯”（Sas Slijkens）水闸枢纽（根特-奥斯坦德运河）以及泽布吕赫的水闸枢纽（莱伊分流运河<Afleidingskanaal van de Leie>与利奥波德运河<Leopoldkanaal>）。 2016年至2025年间，研究人员对调整式潮汐闸管理措施（即在涨潮时段小幅开启水闸）进行了评估，以促进鳗苗洄游。本数据集包含上述监测点位的电导率、径流量、降水量监测结果以及水闸管理实践数据，旨在解析调整后的水闸调度措施的有效性，同时权衡鳗鲡洄游机遇与盐渍化风险之间的利弊关系。 当前存储的数据时段为2020年至2025年8月。数据文件夹划分如下： conductiviteit（电导率数据，由VMM采集，源自waterinfo.be） KGO: 根特-奥斯坦德运河（Kanaal Gent-Oostende, KGO）的VMM电导率数据 NE: 诺尔德河（Noordede, NE）的VMM电导率数据 Ijzer: 伊泽尔河的VMM电导率数据 CTD（电导率温度深度传感器，Conductivity, Temperature, Depth）采集的电导率数据 2019年至2025年（按运河细分，数据按潜水式传感器读取日期归档，每个站点对应1个数据文件），包含点位： AKL（莱伊分流运河<Afleidingskanaal van de Leie>） Ijzer（伊泽尔河） KGO（根特-奥斯坦德运河） LK（利奥波德运河<Leopoldkanaal>） ND（尼乌波特-敦刻尔克运河<Kanaal Nieuwpoort-Duinkerke>） NE（诺尔德河） NP（尼乌波特-普拉森达尔运河<Kanaal Nieuwpoort-Plassendale>） debiet（径流量数据，由VMM采集，源自waterinfo.be） 每个站点对应1个数据文件 intern（R项目内部生成的全部数据） ctd：整合并标准化后的所有INBO电导率数据 ctd_vmm：整合并标准化后的所有VMM电导率数据 debiet：整合并标准化后的所有VMM径流量数据 metadata（元数据，包含阈值、站点坐标及站点间关联关系） conductiviteitslimieten：终止调整式潮汐闸管理、恢复常规潮汐闸管理的电导率阈值 coordinaten_ctd：所有INBO CTD潜水式传感器的坐标信息 link_conductiviteit_debiet_neerslag：VMM电导率数据与对应径流量、降水量数据的关联映射 link_ctd_debiet_neerslag：INBO电导率数据与对应径流量、降水量数据的关联映射 neerslag（降水量数据，由VMM采集，源自waterinfo.be） 每个站点对应1个数据文件 spuibeheer（调整式潮汐闸管理记录，即ATBM<Adjusted Tidal Barrier Management>相关记录） extern ruw：水闸运营方提供的原始数据 verwerkt_in_excel：经人工修正后的数据 intern os_summary_yyyy：按年度汇总的统计数据 os_cleaned：最高分辨率下的调整式潮汐闸管理清洗后数据
