INCDPM Subunit Danube Delta National Institute for Research and Development

Tulcea, Romania

INCDPM Subunit Danube Delta National Institute for Research and Development

Tulcea, Romania
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Deak G.,INCDPM National Institute for Research and Development in Environmental Protection | Badilita A.M.,INCDPM National Institute for Research and Development in Environmental Protection | Popescu I.,INCDPM National Institute for Research and Development in Environmental Protection | Tudor M.,INCDPM Subunit Danube Delta National Institute for Research and Development
Journal of Environmental Protection and Ecology | Year: 2014

In the last decades, sturgeon species population decreased due to several factors, the most important ones being: habitats fragmentation caused by river bed rehabilitation works, irrational and excessive fishing and poaching phenomena which is extremely difficult to control. In order to gain a better understanding of sturgeon species migration on Lower Danube which is useful in elaborating preventive measures for species conservation, National Institute for Research and Development in Environmental Protection Bucharest (INCDPM) created a complex monitoring, control and alarming system (DK-PRB-01U) which uses acoustic telemetry method. The monitoring system comprises, among others, two sub-systems: a fixed one (DKTB) and a floating one (DKMR-01T), both being able to create detection gates for sturgeon migration and for water quality parameters determination. This new system is capable to send data on-line in order to alarm the research team when an abiotic parameter (e.g. turbidity and water level) registers values above thresholds. In this case, intervention should be performed and systems positioning must not affect the calibration and validation. The system facilitates data gathering without allowing any station loss, therefore has a direct impact on the informational volume regarding sturgeon migration behaviour and reduces the monitoring and maintaining costs.


Deak G.,INCDPM National Institute for Research and Development in Environmental Protection | Badilita A.M.,INCDPM National Institute for Research and Development in Environmental Protection | Danalache T.,INCDPM National Institute for Research and Development in Environmental Protection | Tudor M.,INCDPM Subunit Danube Delta National Institute for Research and Development
Journal of Environmental Protection and Ecology | Year: 2014

Nowadays, the available information regarding sturgeon behaviour and their spawning and wintering migration routes on Lower Danube is limited. Moreover, the four existing sturgeon species are prone to extinction due to anthropic activities including over-exploitation, environmental pollution and hydromorphological changes, therefore, the necessity of performing an in-depth study in this field appeared. The sturgeon species behaviour was investigated through acoustic telemetry and the results showed that on the monitored sector, between Calarasi and Braila, km 375-175, for the 201 caught, tagged, released and monitored sturgeons, the branches with highest importance on sturgeons migration feeding, wintering and spawning are the Borcea branch (km 68-0), Old Danube (km 350-175), Caleia branch, Cravia branch and also the Bala branch.

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