Faunal mapping of birds in a riparian area of River Danube after construction of a hydroelectric power station

András Báldi, Csaba Moskát, András Zágon

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Abstract

The construction of a hydroelectric power station and a reservoir significantly modified the landscape in the Szigetkoz region, Hungary. The upper half of the region suffered from a serious decrease in the water table, whereas the lower parts were considered to remain unchanged. We conducted a faunal mapping (presence/absence) of all bird species in the region, covering 62 quadrates of 1 km2 quadrates in the flood area. Our aims were to monitor environmental changes and to assess the efficiency of the faunal mapping method for regional monitoring. We found that the distribution of many species did not differ between the upper and lower parts of the Szigetkoz region, including the forest and meadow living species. However, species that inhabit reed-beds (e.g. reed warbler Acrocephalus scirpaceus, sedge warbler A. schoenobaenus, Savi's warbler Locustella luscinioides, reed bunting Emberiza schoeniclus) showed clear preference for the lower parts, and their occurrence was restricted in the upper parts, whereas species occurring on gravel shores (e.g. little ringed plover Charadrius dubius, common sandpiper Tringa hypoleucos) were more frequent in the upper than in the lower parts. Based on our results, we recommend the use of faunal mapping in monitoring projects. The main advantage is that the diversity and variability in birds' habitat selection assure that there will be several species or guilds that can indicate changes.

Original languageEnglish
Pages (from-to)173-180
Number of pages8
JournalFolia Zoologica
Volume47
Issue number3
Publication statusPublished - Jan 1 1998

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Keywords

  • Habitat selection
  • Hungary
  • Monitoring
  • Riparian landscape
  • Water level modification

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Animal Science and Zoology

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