Wyniki wyszukiwania

1

Bird communities of a suburb habitat in South African highveld during the wet and dry season

100%

Kopij G.

Zeszyty Naukowe Akademii Rolniczej we Wrocławiu. Zootechnika

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2004

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tom 50

2

Does red fox Vulpes vulpes affect bird species richness and abundance in an agricultural landscape?

75%

Kujawa K., Lecki R.

Acta Ornithologica

|

2008

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tom 43

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nr 2

167-178

The aim of the study (carried out 25 km south of Poznań, western Poland) was to determine the impact of Red Fox on bird abundance on farmland. Bird abundance was studied in the years 1999-2000 and 2005-2007 in three categories of sampling plots: 1) in small woods — with or without active fox dens, 2) along transects — starting from dens and running across arable land, and 3) around points — located at dens and far from them. Thus, variability in bird density was analyzed in relation to the presence/absence of Red Fox (in woods) and to the intensity of Red Fox penetration of crops (approximated by distance from a den). Two groups of bird species were distinguished with respect to their vulnerability to Red Fox predation pressure: 1) potential fox prey, i.e. species nesting on the ground and in low vegetation; and 2) birds not threatened by foxes, i.e. species nesting in tree holes and in tall vegetation. To investigate the relationships between bird distribution and Red Fox dens in woods, a step-wise multiple regression of bird density and species number on woodland structure was first performed. The residuals derived from the model were used to evaluate the impact of foxes by analyzing the differences between woods with and without active dens. Neither the species number nor the bird density differed significantly between woods with and without active dens. The differences in bird density observed between years in woods with or without active dens were not significant, either. No relationship between bird density in crop fields and distance from fox dens was found. The results are contrary to those of earlier studies and show that Red Fox does not affect farmland bird distribution, diversity and abundance, at least in the short term.

3

The effect of scale-dependent habitat gradients on the structure of bird assemblages in the Czech Republic

75%

Reif J., Storch D., Simova I.

Acta Ornithologica

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2008

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tom 43

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nr 2

197-206

Spatial patterns in bird community structure are closely related to changes in habitat composition at small spatial scales, but the explanatory power of habitat declines towards larger scales, where dispersal limitations and historical factors becoming more important. To disentangle these effects, we performed a large-scale bird census using a small-scale field approach in the Czech Republic. Using canonical correspondence analysis, we found that the strongest scale-independent gradient in bird community composition goes from higher-altitude forest assemblages to lower-altitude farmland and human settlement assemblages. The other gradients were also scale-dependent, probably due to the different distributional patterns of particular habitats at the respective scales. Closer examination of bird occurrence in particular habitats revealed that water bodies host the most distinct bird assemblage compared to the assemblages of other habitats. Interestingly, although the census tracked the most important east-west biogeographical gradient within the Czech bird fauna, we did not find longitude to be a significant predictor of changes in bird community structure along the transect at any resolution. We suggest that the biogeographical gradient is actually related to the habitat-based distinction between the coniferous-forested higher-altitude West and the deciduous-forested lower-altitude agricultural East. Fine-scale bird-habitat associations are thus responsible for the patterns of community structure at all spatial scales.

4

Analysis of Ixodes ricinus [L.] tick burdens in a resident passerine bird community in the Mazurian Lake Region [Northeastern Poland]

75%

Gryczynska A., Barkowska M., Siemiatkowski M.

Acta Parasitologica

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2002

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tom 47

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nr 1

The abundance of birds and their tick parasites were estimated in a residential avian community located in the Mazurian Lake region (NE Poland). A total of 1624 passerine birds (representing 45 species) were captured, of which 25% were infested with at least one tick. All the ticks belonged to the species Ixodes ricinus. The highest tick infestation prevalence (>50%) were recorded for dunnock (Prunella modularis), tree pipit (Anthus trivialis), hawfinch (Coccothraustes coccothraustes) and blackbird (Turdus merula). Changes in tick infestation prevalence of passerine birds are seasonal. June and September were the two months in which tick infestation rates were the highest. The percentage of birds that were tick carriers was significantly greater in mixed coniferous forest than in alder swamp forest (respectively 32% and 20% of birds were infested with ticks).

5

Annual dynamics of spruce forest birds community

75%

Matiukas G.

The Ring

|

1993

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tom 15

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nr 1-2

6

Bird community of inner La Plata City, Argentina

75%

Montalti D., Kopij G.

Acta Ornithologica

|

2001

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tom 36

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nr 2

During the years 1991-2000,101 bird species were recorded in the city of La Plata, Argentina, 47 of which were breeding ones. The most abundant species were: Zenaida auriculata, Columba livia, Funarius rufus, Pitangus sul- phuratus, Zonotrichia capensis and Passer domesticus. Columba maculosa, C. picazuro, Fumarius rufus, Turdus rufiventris and Molothrus bonariensis have increased in number, while Passer domesticus has decreased. Zonotrichia capensis may successfully compete for food with Passer domesticus. Sturnus vulgaris and Acridotheres cristatellus are new species in the breeding avifauna of La Plata city.

7

Impact of habitat succession in avian populations in the area abandoned after Chernobyl's accident

75%

Nikiforov M. E.

The Ring

|

1993

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tom 15

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nr 1-2

8

Diversity and abundance of bird communities in three mountain forest stands: effect of the habitat heterogeneity

63%

Balaz M., Balazkova M.

Polish Journal of Ecology

|

2012

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tom 60

|

nr 3

The structural composition of the forest habitats is considered to be one of the most important factors affecting the breeding bird community composition. Structurally more homogenous forests are usually characterized by lower number of bird species and their densities. This study presents results of a comparison of the breeding bird communities in three Carpathian mountain forests, and the effect of the forest composition on breeding bird species richness and density. There are the bird communities occurring in semi-natural forests: natural mixed forest (NMF) – spruce-beech forest situated ca. 1000 m a.s.l. and UFZ-spruce forest in the upper forest zone (UFZ) up to 1510 m a.s.l., and the managed spruce forest (MSF) at altitude which is similar to NMF. The territory mapping method was used to estimate the number of breeding species and their densities during years 2004– 2006. The species richness as well as the density of breeding bird communities were found to be higher in the semi-natural habitats (33 breeding species; 64.6 breeding pairs 10–1 ha in NMF and 8 breeding species; 57.6 breeding pairs 10–1 ha in UFZ) than in the managed habitat (21 breeding species; 53.6 breeding pairs 10–1 ha). This was true even for the high-elevated study plot despite the fact that the altitude is usually negatively correlated with both the species richness and density.

9

Breeding bird community of a primeval temperate (Białowieza National Park, Poland) at the beginning of the 21st century

63%

Wesolowski T., Rowinski P., Mitrus C., Czeszczewik D.

Acta Ornithologica

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2006

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tom 41

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nr 1

10

Changes in the structure of avian community along a moisture gradient in an urbanized tropical riparian forest

63%

Kopij G.

Polish Journal of Ecology

|

2020

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tom 68

|

nr 3

11

The winter bird community of rural areas in the proximity of cities: low density and rapid decrease in diversity

63%

Ciach M.

Polish Journal of Ecology

|

2012

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tom 60

|

nr 1

The current problem in farmland ecology is the change in the character of rural development in areas neighbouring cities and towns. Progressive urbanization and the prediminance of housing estates over agricultural aims led to a change in the bird community. During 2005– 2010, a survey of birds wintering within densely populated built-up rural areas was conducted by the line transect method (a total length of 8 km). A total number of 33 species was recorded and the most numerous dominant was the House Sparrow Passer domesticus, which constituted 32–58% of the bird community. The group of dominants and subdominants (which constituted up to 20% of the bird community) included the Yellowhammer Emberiza citrinella and the Rook Corvus frugilegus, and a group of forest and synanthropic species – the Great Tit Parus major, the Blue Tit Cyanistes caeruleus, the Blackbird Turdus merula, and the Collared Dove Streptopelia decaocto. The total density varied in subsequent study years from 57.4 to 87.5 ind. 10 ha–1 and was approximately twice lower than in other rural regions studied in Poland. A significant decrease in the wintering birds’ diversity index was recorded through the study period. The explanations for this could be in the character of villages in the proximity of builtup city areas. This has rapidly changed in recent years, and nowadays agricultural management in the region is discarded. As a result, farmlands of the region almost entirely lost their agricultural character, notably becoming a residential and recreational backup for cities. The villages neighbouring cities and towns are developed into suburban- like areas, where housing estates predominate over agricultural aims. Future consequences of these changes are far-reaching for farmland biodiversity and ecology. The decrease in species diversity and evolution into urban-like bird communities is the most probable scenario.

12

First documented record of barn swallow (Hirundo rustica) in the Antarctic

63%

Korczak-Abshire M., Lees A. C., Jojczyk A.

Polish Polar Research

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2011

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tom 32

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nr 4

13

Effects of intergraded farming on herbal and bird species diversity in Czech agricultural landscapes

63%

Stefanova M., Salek M.

Polish Journal of Ecology

|

2014

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tom 62

|

nr 1

Negative impacts from application of fertilizers and pesticides in agriculture have been observed since the mid-20th century, when their use rapidly increased. This led to decrease in the number of species connected to the agricultural landscape. So-called integrated farming practices are currently being introduced that aim to mitigate negative impacts on the environment and to stabilize the numbers of wild flora and fauna. A number of studies have examined the positive influence of integrate and organic farming as modern agricultural practices in a European perspective. The positive impact of these practices is particularly evident in plants and invertebrates studied in Italy, Austria, Germany and the UK, for example. There is little such data from Central and Eastern Europe, however, even as the region has specific environmental conditions due especially to the more moderate impact of agriculture there during the second half of the 20th century. In this study, we compared the numbers of herbal and bird species on crop fields and meadows managed with conventional versus integrated systems in Southern and Central Bohemia, the Czech Republic. Our analysis included also the effects of land parcel size, position within these parcels and presence of other habitat elements (ditch, tree, field roads, dunghill, field margins – boundaries, bushes, fallow area) in the vicinity of study plots. We found that herbal communities were significantly more species-rich on lands with integrated farming and similar results were obtained in the case of birds, except there was a non-significant effect of integrated farming on bird species richness in meadows. In addition, the species richness of plants decreased as land parcel size increased. In conclusion, herbal and bird communities were shown to benefit more distinctively from integrated farming in Central Europe, where this effect is not considered unambiguous due to the higher overall habitat heterogeneity and historically lower burdening of farmland with pesticides and fertilizers. The results support the idea that it makes sense even here to introduce integrated forms of agricultural practice.

14

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A synoptic report on the early winter migrants and resident birds in the coastal wetland of the Marine National Park, Positra, Gujarat

63%

Chatterjee A., Ghosal S., Chakrabarti P.

International Letters of Natural Sciences

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2015

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tom 49

The study is based on the avian community observed in the region. In total, 524 individuals, 27 genera and 35 species of birds belonging to 21 families have been recorded. Among them, the family Charadriidae with 15.08% incidence is the most frequent; immediately followed by the family Scolopacidae (11.26% of occurence). The highest observed species richness has been observed in case of the family Ardeidae. Little Ringed Plover (Charadrius dubius) is the most abundant avian species observed. The community consists of 40% Resident; 40% Resident-migrant and 20% Migrant bird species. It was observed that the concerned community shows a considerable diversity and a corresponding low value of dominance. In the feeding guild analysis, the Insectivore and the Aquatic invertebrate-feeder guilds have the most number of recorded avian species. The feeding guild affiliations also points out that the overall community is fairly rich in its composition as it houses bird species belonging to various feeding guilds.

15

The breeding bird community of a primeval temperate forest [Bialowieza National Park, Poland] at the end of the 20th century

63%

Wesolowski T., Tomialojc L., Mitrus C., Rowinski P., Czeszczewik D.

Acta Ornithologica

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2002

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tom 37

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nr 1

16

The abundance of tree holes and utilization by hole-nesting birds in a primeval boreal forest of Mongolia

63%

Bai M. L., Wichmann F., Muhlenberg M.

Acta Ornithologica

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2003

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tom 38

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nr 2

The natural tree holes and nest holes of hole-nesting birds were surveyed in four forest types in the west Khentii Mountains of NE Mongolia. The utilization patterns of species, size and condition of trees, as well as hole types, were investigated. The average density of tree holes in the study area approached 30 holes/ha, while that of hole-nesting birds was 2.4 nests/ha only. The riparian mixed forest had the greatest number of species and individuals of hole-nesting birds, while the spruce-fir forest had the lowest numbers. Excavating bird species preferred larger, deciduous trees, and snags. Non-excavators did not select holes according to tree species or size, but preferred holes in living trees and branch holes. In view of the low occupancy of holes among the four habitats, we suggest that the density of secondary hole-nesting birds is not limited by availability of holes in the study area.

17

Effect of habitat diversity on breeding birds: comparison of farmland bird community in the Region of Wielkopolska [W.Poland] with relevant data from other European studies

63%

Tryjanowski P.

Polish Journal of Ecology

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1999

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tom 47

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nr 2

18

The development of bird communities in new housing estates in Warsaw

63%

Luniak M.

Memorabilia Zoologica

|

1994

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tom 49

19

Formation of bird communities in the forest sample plots undergoing the action of industrial pollution in the Ojcow National Park

63%

Tomek T.

Acta Zoologica Cracoviensia

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1992-1993

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tom 35

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nr 2

20

Bird fauna and populations of raised bogs of Belorussia

63%

Kozlov V. P., Kuzmenko V. Y.

The Ring

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1993

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tom 15

|

nr 1-2

Ograniczanie wyników

Bird communities of a suburb habitat in South African highveld during the wet and dry season

Does red fox Vulpes vulpes affect bird species richness and abundance in an agricultural landscape?

The effect of scale-dependent habitat gradients on the structure of bird assemblages in the Czech Republic

Analysis of Ixodes ricinus [L.] tick burdens in a resident passerine bird community in the Mazurian Lake Region [Northeastern Poland]

Annual dynamics of spruce forest birds community

Bird community of inner La Plata City, Argentina

Impact of habitat succession in avian populations in the area abandoned after Chernobyl's accident

Diversity and abundance of bird communities in three mountain forest stands: effect of the habitat heterogeneity

Breeding bird community of a primeval temperate (Białowieza National Park, Poland) at the beginning of the 21st century

Changes in the structure of avian community along a moisture gradient in an urbanized tropical riparian forest

The winter bird community of rural areas in the proximity of cities: low density and rapid decrease in diversity

First documented record of barn swallow (Hirundo rustica) in the Antarctic

Effects of intergraded farming on herbal and bird species diversity in Czech agricultural landscapes

A synoptic report on the early winter migrants and resident birds in the coastal wetland of the Marine National Park, Positra, Gujarat

The breeding bird community of a primeval temperate forest [Bialowieza National Park, Poland] at the end of the 20th century

The abundance of tree holes and utilization by hole-nesting birds in a primeval boreal forest of Mongolia

Effect of habitat diversity on breeding birds: comparison of farmland bird community in the Region of Wielkopolska [W.Poland] with relevant data from other European studies

The development of bird communities in new housing estates in Warsaw

Formation of bird communities in the forest sample plots undergoing the action of industrial pollution in the Ojcow National Park

Bird fauna and populations of raised bogs of Belorussia