A 2021. januári vízimadár-felmérés eredményei a Balatonon és a környező vizesélőhelyeken = Results of the January 2021 Waterbird Census at Lake Balaton and Its Surrounding Wetlands

Kovács, Gyula (2023) A 2021. januári vízimadár-felmérés eredményei a Balatonon és a környező vizesélőhelyeken = Results of the January 2021 Waterbird Census at Lake Balaton and Its Surrounding Wetlands. MAGYAR VÍZIVAD KÖZLEMÉNYEK = HUNGARIAN WATERFOWL PUBLICATIONS, 37. pp. 283-288. ISSN 1416-1389 (nyomtatott); 1419-6107 (elektronikus)

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Abstract

Az elmúlt évekhez hasonlóan (KOVÁCS, 2008a, 2008b, 2008c, 2013a, 2013b, 2013c, 2013d, 2015; KOVÁCS & HAJDU, 2015a, 2015b; KOVÁCS & BRUCKNER 2022a, 2022b, 2022c) az MME Dél-Balatoni Helyi Csoportjának szervezésében vízimadár-felmérést végeztünk a teljes Balatonon és a környező vizesélőhelyeken 2021 év elején. Waterbird census was carried out on 59 survey plots around Lake Balaton and its surrounding wetlands on 17th January 2021, like in previous years (KOVÁCS, 2008a, 2008b, 2008c, 2013a, 2013b, 2013c, 2013d, 2015; KOVÁCS & HAJDU, 2015a, 2015b; KOVÁCS & BRUCKNER 2022a, 2022b, 2022c) by BirdLife Hungary South-Balaton Local Group. A total of 37 waterbird species from 8 orders and 8 families were observed (Table 1.). The highest number (>5700 ind.) was counted at Királyszentistván, the highest species richness was found at Balatonfűzfő. We counted more than 1000 individuals in further 9 plots (Table 2, Map 1.), while species richness was exceeded 10 in 21 survey plots (Map 2.). On the fishponds and marshes, the dominant (D>5%) species were the Black-headed Gull, the Yellow-legged/Caspian Gull and the Mallard; on Lake Balaton the Eurasian Coot, the Mallard, the Tufted Duck, the Common Pochard, the Black-headed Gull and the Common Goldeneye. The highest abundance of Eurasian Coots (>8500 ind.) was observed, but also Mallards (~6400 ind.), Black-headed Gulls (~5900 ind.), Tufted Ducks (>3600 ind.), Common Pochards (>3000 pd), Yellow-legged/Caspian Gulls (~2700 ind.), Common Goldeneyes (>2200 ind.), Great Cormorants (>1400 ind.) and Pygmy Cormorants (>1000 ind.) were also significant throughout the survey area. Another remarkable record was the total number of Common Merganser 164. Interesting faunistic result was the occurrence of the Greater Scaup (1-1-1-2 ind. at Fonyódliget, Balatonszemes, Balatonszárszó, Szántód), Common Scoter (1 ind. at Balatonfenyves); Red-breasted Merganser (1-4-2-4-4 ind. at Fonyód, Balatonlelle, Balatonkenese, Balatonfűzfő Tobruk, Alsóörs); Red-necked Grebe (3-3-2 ind. at Balatonfűzfő Tobruk, Alsóörs, Balatonfüred MVM port); Black-necked Grebe (14-1-1-1 ind. at Fonyód, between Balatonkenese-Balatonfűzfő, Örvényes, Keszthely). However, not a single loon could be observed on the given day, although the observation conditions were not optimal.

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