Abundance and feeding of wintering and migrating aquatic birds in two sampling areas of Lake Balaton in 1983–1985

Ponyi, J. E.

doi:10.1007/978-94-011-1128-7_6

Cited by 9 publications

(10 citation statements)

References 3 publications

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“…Shoreline 56 development of the lake started in the 1890s with the establishment of bathing resorts, the 57 number of which has dramatically increased since World War II, resulting in a significant part of 58 the lake's shoreline being covered by urbanized areas (Buday-Sántha 2007). However, despite 59 these changes, during autumn and winter the lake is an internationally significant staging site for 60 many waterbird species (Liker & Nagy 2009;Pónyi 1994). The specific aims of this study were 61 7 used for bird census (1.5  0.1 census plots per section).…”

Section: Introduction 14mentioning

confidence: 99%

Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline

et al. 2013

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Section: Introduction 14mentioning

confidence: 99%

Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline

et al. 2013

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“…Usually this diving duck spends less than 25% of diurnal hours feeding (Petkov, 2003;Muzaffar, 2004 and Samraoui, 2008; Aissaoui et al, 2011). As evident in this study, spending less diurnal time feeding may be a direct attribute of consuming high caloric animal matters (del Hoyo et al, 1992;Poyni, 1994). Foraging in shallow water by diving rather than up-ending or dabbling may also be the result of spending less time feeding.…”

Section: Discussionmentioning

confidence: 59%

Time-activity budgets of wintering Ferruginous Duck, Aythya nyroca, at Gajoldoba wetland, Jalpaiguri, India

Datta¹

2014

Turk J Zool

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Results indicate resting as the main diurnal activity of Aythya nyroca, whereas feeding dominated during the night. Other than resting (56.3%), feeding (16.8%) and swimming (15.2%) were major activities of the diurnal time-activity budget, whereas preening (9.4%) and flying (2.3%) were less frequent and occupied a secondary rank. Feeding and swimming were prevalent during the morning and afternoon hours. During midday, most of the ducks indulged in resting. The small amount of time spent on diurnal feeding was compensated by voracious nocturnal feeding (64.6%), which peaked in the middle of the night. Human interference plays an important role in shaping the diurnal time-activity budget. Ferruginous Ducks used the Gajoldoba wetland for foraging and roosting both day and night all through the wintering cycle, which proves that the Gajoldoba wetland is a stable wintering ground for Ferruginous Ducks.

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“…As to the role of aquatic species in the material and energy cycles, all three material-cycle guilds of these species were observed in all water habitats. The dominant members of transporter and metabolism accelerator guilds have been investigated by gut content analysis (Andrikovics and Gere, unpublished data;Ponyi, 1994). The feeding activity of the dominant waders as the members of bioturbing accelerators in sodic pools have been also studied by regurgitation gut analysis in our territory (Boros et al, 2006).…”

Section: Birdsmentioning

confidence: 99%

“…Today, the number of aquatic birds may be so high on the remaining small wetlands that they have a significant impact on material cycling (Ba´ldi, 2001;Gere & Andrikovics 1992a, 1992b, 1994. The aim of this study was to investigate the role of aquatic birds in a complex of eu-, para-and plesiopotamon systems as that is found in Bodrogzug.…”

Section: Introductionmentioning

confidence: 98%

Water bird guilds and their feeding connections in the Bodrogzug, Hungary

et al. 2006

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Species composition, number, species diversity, and evenness of nesting bird communities were surveyed in 2001 and 2002 in north-east Hungary. The survey was aimed at foraging birds. A higher number of species and species diversity was observed in the oxbows compared to that of the eupotamon-type areas, and was correlated with the more luxuriant vegetation covering the water surface. The species evenness value of the oxbows was lower than that of the flowing river. The number of species and species diversity in riparian areas covered with trees were higher than those in areas covered only by bushes. There was a negative correlation between evenness and the diversity of species for habitats covered with water, and habitats covered with trees and bushes along the banks. The following highly protected bird species nested in the study areas: black stork (Ciconia nigra), lesser spotted eagle (Aquila pomarina), saker falcon (Falco cherrug), red-footed falcon (Falco vespertinus), and corncrake (Crex crex). Compared to the total bird fauna of the investigated area, the highest ratio of aquatic bird species was present in the oxbow areas covered with aquatic vegetation. Considering the role of aquatic birds in material and energy cycles, three main species groups were distinguished: the material-transporting group (highest number of specimens); the bioturbing group (lowest number of specimens); and the decomposition-accelerating group (intermediate numbers).

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Abundance and feeding of wintering and migrating aquatic birds in two sampling areas of Lake Balaton in 1983–1985

Cited by 9 publications

References 3 publications

Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline

Environmental factors shaping the distribution of common wintering waterbirds in a lake ecosystem with developed shoreline

Time-activity budgets of wintering Ferruginous Duck, Aythya nyroca, at Gajoldoba wetland, Jalpaiguri, India

Water bird guilds and their feeding connections in the Bodrogzug, Hungary

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