Artikel-Suche

Weggler, M., H. Dähler, H.-U. Dössegger, S. Gysel, R. Hangartner, W. Hunkeler, E. Mühlethaler & W. Müller

Langfristige Entwicklung kleiner Brutvogelbestände in Feuchtgebieten im Kanton Zürich.

2004

101

55–74

Key words
(von 1994 bis 2006 vergeben)

long-term population dynamics, small populations, wetlands, habitat management, canton Zurich, Switzerland

Bestandesentwicklung, Bestandeserfassung, Kleinstbestände, Naturschutzgebiet, Artenschutzmassnahmen, Erholungsbetrieb, Feuchtgebiet

Schlagwort_Vogelart
(wissenschaftlich)

Tachybaptus ruficollis, Podiceps cristatus, Podiceps nigrigollis, Ixobrychus minutus, Anas strepera, Anas crecca, Anas querquedula, Anas clypeata, Netta rufina, Aythya ferina, Aythya fuligula, Rallus aquaticus, Porzana porzana, Porzana parva, Porzana pusilla, Gallinula chloropus, Charadrius dubius, Vanellus vanellus, Gallinago gallinago, Numenius arquata, Larus ridibundus, Larus cachinnans, Sterna hirundo, Cuculus canorus, Anthus trivialis, Luscinia megarhynchos, Locustella naevia, Locustella luscinioides, Acrocephalus palustris, Acrocephalus scirpaceus, Acrocephalus arundinaceus, Hippolais icterina, Phylloscopus trochilus, Oriolus oriolus, Carpodacus erythrinus, Emberiza citrinella, Emberiza schoeniclus

Schlagwort_Vogelart
(deutsch)

Zwergtaucher, Haubentaucher, Schwarzhalstaucher, Zwergdommel, Schnatterente, Krickente, Knäkente, Löffelente, Kolbenente, Tafelente, Reiherente, Wasserralle, Tüpfelsumpfhuhn, Kleines Sumpfhuhn, Zwergsumpfhuhn, Teichhuhn, Flussregenpfeifer, Kiebitz, Bekassine, Grosser Brachvogel, Lachmöwe, Weisskopfmöwe, Flussseeschwalbe, Kuckuck, Baumpieper, Nachtigall, Feldschwirl, Rohrschwirl, Sumpfrohrsänger, Teichrohrsänger, Drosselrohrsänger, Gelbspötter, Fitis, Pirol, Karmingimpel, Goldammer, Rohrammer

Schweiz, Zürich, Pfäffikersee Neeracher Ried, Unterer Greifensee, Katzensee, Klotener Ried, Husemer See, Dielsdorfer/Steinmaurer Ried, Oerlinger Ried

deutsch

Abhandlung

Long-term development of small breeding bird populations in wetlands of the canton of Zurich. – In this paper we analyse the population trend 1975–2002 of breeding birds in eight wetlands in the canton of Zurich. Ten out of 26 breeding species showed an increase in population size (Little Grebe, Great Crested Grebe, Black-necked Grebe, Little Bittern, Tufted Duck, Common Tern, Rufous Nightingale, Savi’s Warbler, Reed Warbler and Yellowhammer), seven a decline (Common Teal, Common Pochard, Northern Lapwing, Common Snipe, Tree Pipit, Willow Warbler, Golden Oriole) and no change was evident in nine species (Water Rail, Spotted Crake, Moorhen, Black-headed Gull, Common Cuckoo, Grasshopper Warbler, Marsh Warbler, Great Reed Warbler, Reed Bunting). Formerly common birds in the wetlands have disappeared or continued breeding only irregularly, for example the Common Snipe or the Tree Pipit. On the other hand, Savi’s Warbler and Rufous Nightingale expanded their distribution and population size. The Common Tern started to breed due to specific conservation measures. Considering the critical situation of wetlands within the densely populated canton of Zurich the overall results are encouraging. We conclude that the long-term management measures started in wetlands in the 1970s are successful. These measures include the restoration of deteriorated wetlands, actions against succession processes like constructing ponds, fine tuning of water levels or grazing cattle at specific spots, species conservation measures and the control of recreational activities.