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| Dataset Title: | 2015_PHD_VERHELST_EEL - Acoustic telemetry data for European eel (Anguilla anguilla) in the Scheldt estuary and southern North Sea (Belgium) 
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| Institution: | UGent-MARBIOL, VLIZ, LNE-INBO (Dataset ID: 2015_phd_verhelst_eel) |
| Range: | longitude = -9.04483 to 69.47853°E, latitude = -49.27985 to 65.13457°N |
| Information: | Summary
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| FGDC
| ISO 19115
| Metadata
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Attributes {
s {
eventID {
String long_name "eventID";
String units "None";
String units_uri "None";
}
ScientificName {
String long_name "ScientificName";
String sdn_P02_name "SeaDataNet biological format biotic parameters";
String sdn_P02_uri "https://vocab.nerc.ac.uk/collection/P02/current/BPRP/";
String sdn_P02_urn "SDN:P02::BPRP";
String sdn_parameter_name "Taxon of biological entity specified elsewhere";
String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/";
String sdn_parameter_urn "SDN:P01::SCNAME01";
String sdn_uom_name "Not applicable";
String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/XXXX/";
String sdn_uom_urn "SDN:P06::XXXX";
String standard_name "scientificname";
String units "Not applicable";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/SCNAME01/";
}
BasisOfRecord {
String long_name "BasisOfRecord";
String units "None";
String units_uri "None";
}
InstitutionCode {
String long_name "InstitutionCode";
String units "None";
String units_uri "None";
}
YearCollected {
Float32 actual_range 2015.0, 2022.0;
String long_name "YearCollected";
String units "None";
String units_uri "None";
}
MonthCollected {
Float32 actual_range 1.0, 12.0;
String long_name "MonthCollected";
String units "None";
String units_uri "None";
}
DayCollected {
Float32 actual_range 1.0, 31.0;
String long_name "DayCollected";
String units "None";
String units_uri "None";
}
time {
String _CoordinateAxisType "Time";
String axis "T";
String ioos_category "Time";
String long_name "Time";
String standard_name "time";
String time_origin "01-JAN-1970 00:00:00";
String time_precision "1970-01-01T00:00:00Z";
String units "seconds since 1970-01-01T00:00:00Z";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/CJDY1101";
}
TimeOfDay {
Float32 actual_range 0.0, 24.0;
String long_name "TimeOfDay";
String units "None";
String units_uri "None";
}
sex {
String long_name "sex";
String units "None";
String units_uri "None";
}
lifestage {
String long_name "lifestage";
String units "None";
String units_uri "None";
}
longitude {
String _CoordinateAxisType "Lon";
Float32 actual_range -9.04483, 69.47853;
String axis "X";
String ioos_category "Location";
String long_name "Longitude";
String standard_name "longitude";
String units "degrees_east";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALONZZ01";
}
latitude {
String _CoordinateAxisType "Lat";
Float32 actual_range -49.27985, 65.13457;
String axis "Y";
String ioos_category "Location";
String long_name "Latitude";
String standard_name "latitude";
String units "degrees_north";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/ALATZZ01";
}
aphia_id {
String long_name "aphia_id";
String sdn_P02_name "SeaDataNet biological format biotic parameters";
String sdn_P02_uri "https://vocab.nerc.ac.uk/collection/P02/current/BPRP/";
String sdn_P02_urn "SDN:P02::BPRP";
String sdn_parameter_name "Identifier (LSID) of biological entity specified elsewhere";
String sdn_parameter_uri "https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/";
String sdn_parameter_urn "SDN:P01::SNANID01";
String sdn_uom_name "Not applicable";
String sdn_uom_uri "https://vocab.nerc.ac.uk/collection/P06/current/XXXX/";
String sdn_uom_urn "SDN:P06::XXXX";
String standard_name "aphia_id";
String units "Not applicable";
String units_uri "https://vocab.nerc.ac.uk/collection/P01/current/SNANID01/";
}
}
NC_GLOBAL {
String AccConID "19";
String AccConstrDescription "CC0 enables scientists, educators, artists and other creators and owners of copyright- or database-protected content to waive those interests in their works and thereby place them as completely as possible in the public domain, so that others may freely build upon, enhance and reuse the works for any purposes without restriction under copyright or database law.";
String AccConstrDisplay "To the extent possible under law, the person who associated CC0 with this dataset has waived all copyright and related or neighboring rights to this dataset.";
String AccConstrEN "CC 0 (No Rights Reserved)";
String AccessConstraint "CC 0 (No Rights Reserved)";
String AccessConstraints "None";
String Acronym "None";
String added_date "2024-08-26 16:02:51.197000";
String BrackishFlag "1";
String CDate "2017-11-24";
String cdm_data_type "Other";
String CheckedFlag "0";
String Citation "Verhelst, P.; Reubens, J.; Coeck, J.; De Maerteleire, N.; Desmet, P.; Gelaude, E.; Mouton, A.; Pieters, S.; Reyserhove, L.; Robberechts, K.; Moens, T.; (2020): 2015_PHD_VERHELST_EEL - Acoustic telemetry data for European eel (Anguilla anguilla) in the Scheldt estuary and southern North Sea (Belgium). Marine Data Archive.";
String Comments "None";
String ContactEmail "None";
String Conventions "COARDS, CF-1.6, ACDD-1.3";
String creator_name "Robberechts, Coeck, Desmet, Reyserhove, Mouton, Pieters, Reubens, Moens, Verhelst, De Maerteleire, Gelaude";
String CurrencyDate "None";
String DasID "5850";
String DasOrigin "Sensor platform";
String DasType "Data";
String DasTypeID "1";
String DateLastModified "{'date': '2025-01-08 10:49:50.793317', 'timezone_type': 1, 'timezone': '+01:00'}";
String DescrCompFlag "0";
String DescrTransFlag "0";
Float64 Easternmost_Easting 69.47853;
String EmbargoDate "None";
String EngAbstract "This is an acoustic telemetry dataset published by Ghent University. It contains animal (fish) tracking data collected by the Permanent Belgian Acoustic Receiver Network (https://lifewatch.be/en/fish-acoustic-receiver-network) for the project/study 2015_phd_verhelst_eel, using VEMCO tags (V13) and receivers (VR2AR, VR2Tx, VR2W). In total 136 female individuals of European eel (Anguilla anguilla) were captured, tagged and released between 2015 and 2018 in the Scheldt estuary, to study their migration behaviour - especially their use of selective tidal stream transport - in a tidal system without migration barriers.";
String EngDescr
"Large estuaries with a complete salinity gradient from a tidal freshwater zone to marine have become rare due to water regulating constructions such as sluices, shipping locks, water pumping stations and dams. However, the Scheldt estuary in Belgium still has an extensive estuary of ca 160 km. Diadromous fish have to overcome substantial distances which come with a high energetic cost. Due to the high energetic cost of migration and the low adult survival, some of these species have developed semelparity. Consequently, a bioenergetic trade-off between migration and reproduction may exist for semelparous fish species, especially since many will stop feeding during migration: the smaller the energy expenditure during migration, the larger the amount of energy that may remain available for gonad maturation. An example where migration can have important bioenergetic repercussions is migration through strong tidal systems. To reduce energy loss in such systems, fish may perform selective tidal stream transport (STST): an animal ascends into the water column with the appropriate tide and rests on or in the bottom during the opposite tide. However, the use of STST by silver European eels is still controversial. In this study, we found strong evidence that silver European eels apply STST. The results illustrate that eels can distinguish between ebb and flood and suggest that tides play a role in orientation, either directly or indirectly. The general migration speed was higher in the downstream part of the estuary compared to the upstream part, while tidal migration speed was equal in both parts, indicating that eels migrated more consistently in the downstream part. The results of this study give insight in how a diadromous species migrates through an estuary and underline the importance of the tides.
This dataset was collected using infrastructure provided by VLIZ and INBO funded by the Research Foundation - Flanders (FWO) as part of the Belgian contribution to LifeWatch. Data were exported from the European Tracking Network data portal (http://www.lifewatch.be/etn) developed by VLIZ using the ETN R package (https://inbo.github.io/etn/) developed by INBO. Field definitions can be found at https://inbo.github.io/etn/articles/etn_fields.html.";
String FreshFlag "1";
String GBIF_UUID "638cc552-4ca9-43c0-8cad-d3f570a4572e";
Float64 geospatial_lat_max 65.13457;
Float64 geospatial_lat_min -49.27985;
String geospatial_lat_units "degrees_north";
Float64 geospatial_lon_max 69.47853;
Float64 geospatial_lon_min -9.04483;
String geospatial_lon_units "degrees_east";
String history
"2025-03-09T23:26:39Z (local files)
2025-03-09T23:26:39Z http://erddap.eurobis.org/tabledap/2015_phd_verhelst_eel.das";
String infoUrl "[{'DOIID': 434, 'PublicationYear': 2020, 'DOI': '10.14284/434', 'Citation': 'Verhelst, P.; Reubens, J.; Coeck, J.; De Maerteleire, N.; Desmet, P.; Gelaude, E.; Mouton, A.; Pieters, S.; Reyserhove, L.; Robberechts, K.; Moens, T.; (2020): 2015_PHD_VERHELST_EEL - Acoustic telemetry data for European eel (Anguilla anguilla) in the Scheldt estuary and southern North Sea (Belgium). Marine Data Archive.', 'MDAID': 'VLIZ_00000844_5fb7c680b7b43496098549', 'Moratorium': 0, 'MDAURL': 'https://mda.vliz.be/directlink.php?fid=VLIZ_00000844_5fb7c680b7b43496098549', 'CurrentDOI': 1, 'Active': 1, 'URL': None, 'downloadURL': 'https://mda.vliz.be/download.php?file=VLIZ_00000844_5fb7c680b7b43496098549'}]";
String InputNotes "None";
String institution "UGent-MARBIOL, VLIZ, LNE-INBO";
String keywords "aphia_id, BasisOfRecord, DayCollected, eventID, InstitutionCode, latitude, lifestage, longitude, MonthCollected, ScientificName, sex, time, TimeOfDay, YearCollected";
String License "https://creativecommons.org/publicdomain/zero/1.0/";
String license
"The data may be used and redistributed for free but is not intended
for legal use, since it may contain inaccuracies. Neither the data
Contributor, ERD, NOAA, nor the United States Government, nor any
of their employees or contractors, makes any warranty, express or
implied, including warranties of merchantability and fitness for a
particular purpose, or assumes any legal liability for the accuracy,
completeness, or usefulness, of this information.";
String Lineage "None";
String MarineFlag "1";
String modified_sync "2024-08-26 00:00:00";
Float64 Northernmost_Northing 65.13457;
String OrigAbstract "None";
String OrigDescr "None";
String OrigDescrLang "None";
String OrigDescrLangNL "None";
String OrigLangCode "None";
String OrigLangCodeExtended "None";
String OrigLangID "None";
String OrigTitle "None";
String OrigTitleLang "None";
String OrigTitleLangCode "None";
String OrigTitleLangID "None";
String OrigTitleLangNL "None";
String Progress "In Progress";
String PublicFlag "1";
String ReleaseDate "None";
String ReleaseDate0 "None";
String RevisionDate "None";
String SizeReference "81,302 records";
String sourceUrl "(local files)";
Float64 Southernmost_Northing -49.27985;
String standard_name_vocabulary "CF Standard Name Table v70";
String StandardTitle "2015_PHD_VERHELST_EEL - Acoustic telemetry data for European eel (Anguilla anguilla) in the Scheldt estuary and southern North Sea (Belgium)";
String StatusID "1";
String subsetVariables "ScientificName,BasisOfRecord,YearCollected,MonthCollected,DayCollected,sex,lifestage,aphia_id";
String summary "This is an acoustic telemetry dataset published by Ghent University. It contains animal (fish) tracking data collected by the Permanent Belgian Acoustic Receiver Network (https://lifewatch.be/en/fish-acoustic-receiver-network) for the project/study 2015_phd_verhelst_eel, using VEMCO tags (V13) and receivers (VR2AR, VR2Tx, VR2W). In total 136 female individuals of European eel (Anguilla anguilla) were captured, tagged and released between 2015 and 2018 in the Scheldt estuary, to study their migration behaviour - especially their use of selective tidal stream transport - in a tidal system without migration barriers.";
String TerrestrialFlag "0";
String title "2015_PHD_VERHELST_EEL - Acoustic telemetry data for European eel (Anguilla anguilla) in the Scheldt estuary and southern North Sea (Belgium)";
String UDate "2025-01-07";
String VersionDate "None";
String VersionDay "18";
String VersionMonth "9";
String VersionName "1.0";
String VersionYear "2024";
String VlizCoreFlag "1";
Float64 Westernmost_Easting -9.04483;
}
}
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