Details

Autor(en) / Beteiligte

• Romanenko, V D
• Afanasyev, SA
• Vasenko, O G

Titel

Review of Status of Fisheries and Aquaculture in the Dnipro Region in Relation to Biodiversity Conservation

Ist Teil von

• Water quality research journal of Canada, 2005-01, p.42-53

Erscheinungsjahr

2005

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Damming of the Dnipro River accompanied by the anthropogenically-induced eutrophication has significantly changed the diversity of ichthyofauna and has resulted in the considerable deterioration of the quality of commercial fishes caught both from reservoirs and river estuaries. In the Dnipro River, reservoirs have caused changes in the hydrological regime, flooded fish-spawning and dwelling areas, blocked routes of migrating fishes by dams, resulting in a decline of native migrating, semi-migrating and non-migrating rheophilic fish species. Some valuable species (such as ship, sterlet, salmon, and eel) have completely disappeared, while fishes with limited value (sardelle, Alburnus alburnus, aterina and pipefish) have multiplied in large numbers. The same situation is observed in the Dnipro-Bug estuary, which cannot but influence the Black Sea ecosystem. Because Dnipro Basin shorelines have, for the most part, been turned into agricultural lands, water reservoirs are being contaminated by surface run-offs of suspended solids. In addition, due to low water velocity in the reservoirs, shallow water zones that serve as spawning areas for phytophilic fishes are getting silted. This process is accompanied by the contraction of fish-spawning areas and spawning substrate, which is a characteristic feature of the current stage of their development. Strategic recommendations to resolve these problems are made.