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The population of European silver eel (Anguilla anguilla) has declined tremendously in the last decades. The cause of this decline is unknown, and it is necessary to investigate the migratory behaviour and survival rates of silver eels during the reproductive migration in order to understand if the decline is related to factors acting during that migration. We estimated survival and progression rates of European silver eel migrating in the lower part of the River Gudenaa and during the first phase of the marine migration in the Randers Fjord in Denmark.  Migration was monitored using an array of 14 Innovasea (VR2) acoustic receivers distributed accross 10 stations. Progression rate and mortality in the river, inner part of the fjord and outer part of the fjord were estimated.

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This is the most accommodating of licenses offered. Recommended for maximum dissemination and use of licensed materials.","Lineage":null,"AccConID":21},"dois":[{"DOIID":1172,"PublicationYear":2025,"DOI":"10.14284/735","Citation":"Aarestrup, K.; Thorstad, EB.; Koed, A.; Svendsen, JC.; Jepsen, N.; Pedersen, MI.;  Økland, F.; (2004) Acoustic receiver array in the Gudena River, Denmark, from 2005-2005","MDAID":null,"Moratorium":0,"MDAURL":null,"CurrentDOI":1,"Active":1,"URL":null,"downloadURL":null}],"spcols":[{"SpColID":1000,"SpName":"European Tracking Network"}],"keywords":[{"ThesaurusTerm":"Acoustic arrays","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_2cdfca90","Description":null,"OrigThesTerm":"Acoustic arrays","DutchTerm":null,"URI":"http://aims.fao.org/aos/agrovoc/c_2cdfca90","DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic data","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_54b338c3","Description":null,"OrigThesTerm":"Acoustic data","DutchTerm":null,"URI":"http://aims.fao.org/aos/agrovoc/c_54b338c3","DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic detection","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Acoustic detection","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic devices","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Acoustic devices","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic receivers","ThesTypID":0,"ThesType":null,"Code":null,"Description":null,"OrigThesTerm":"Acoustic receivers","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic telemetry","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":"c_3563933f","Description":null,"OrigThesTerm":"Acoustic telemetry","DutchTerm":null,"URI":"http://aims.fao.org/aos/agrovoc/c_3563933f","DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic Telemetry","ThesTypID":30,"ThesType":"ETN Context","Code":null,"Description":"Acoustic telemetry uses acoustic signals (also called ‘pings’) which propagate into the water, and are detected by acoustic receivers","OrigThesTerm":"Acoustic Telemetry","DutchTerm":"Akoestische Telemetrie","URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic tracking","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Acoustic tracking","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic tracking","ThesTypID":4,"ThesType":"CAB Thesaurus","Code":"5296","Description":null,"OrigThesTerm":"Acoustic tracking","DutchTerm":null,"URI":"https://id.cabi.org/cabt/5296","DasKeywordDescr":null},{"ThesaurusTerm":"Acoustic tracking systems","ThesTypID":1,"ThesType":"ASFA Thesaurus List","Code":null,"Description":null,"OrigThesTerm":"Acoustic tracking systems","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Denmark","ThesTypID":34,"ThesType":"ASFA Geoterms","Code":null,"Description":null,"OrigThesTerm":"Denmark","DutchTerm":null,"URI":null,"DasKeywordDescr":null},{"ThesaurusTerm":"Network Project","ThesTypID":30,"ThesType":"ETN Context","Code":null,"Description":"Project metadata related to receivers and deployments","OrigThesTerm":"Network Project","DutchTerm":"Network Project","URI":null,"DasKeywordDescr":null}],"parents":[{"DasID":5912,"Acronym":null,"EngAbstract":"The European Tracking Network is a pan-European biotelemetry network that aims at the integration of regional telemetry initiatives into a sustainable, efficient and integrated network embedded in the international context. 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