Preferencje help
Polish version English version Język
Widoczny [Schowaj] Abstrakt
Liczba wyników

Znaleziono wyników: 21

Liczba wyników na stronie
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych:  water bird
help Sortuj według:

help Ogranicz wyniki do:
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
1
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Parasites of the captive mallard duck (Anas platyrhynchos)

100%
Ras-Norynska M., Sokol R., Michalczyk M., Koziatek-Sadlowska S.
Annals of Parasitology
|
2016
|
tom 62
|
nr Suppl.
2

The importance of fishponds to waterfowl in Poland

100%
Bukacinska M., Bukacinski D., Cygan J. P., Dobrowolski K. A., Kaczmarek W.
Acta Hydrobiologica
|
1995
|
tom 37
|
nr Suppl.1
3

Wader studies of the water bird research group Kuling in 1983-1998

100%
Meissner W., Remisiewicz M.
The Ring
|
1998
|
tom 20
|
nr 1-2
4

Vilejka reservoir as important bird area in Belorussia

100%
Shkljarov L. P.
The Ring
|
1993
|
tom 15
|
nr 1-2
5

Seasonal changes in the diversity and numbers of waterbirds in a tropical river in Southern Africa

84%
Kopij G., Paxton M.
Polish Journal of Ecology
|
2018
|
tom 66
|
nr 3
Although freshwater habitats play a crucial role in most ecosystems in the world, little is known on their functioning in tropical regions even in regard to the most often studied avian communities. In this study, counts on waterbirds were conducted in dry and wet season (in years 2001–2008) in a riverine habitat in southern Africa (Shamvura stretch of the Okavango River). In total, 84 waterfowl species were recorded. The birds were assigned to different guilds according to their migration activity, diet and nesting site selection. In overall, the species number was almost the same (74 vs. 73) in the wet and dry season. The abundance of all resident species recorded was lower in wet (N = 5992) than in dry seasons (N = 6965)(χ²= 73.1, P < 0.01). In both seasons Palearctic migrants were represented by seven species, which comprised 1–2% of all waterbirds. Six species were classified as dominants: African reed cormorant Phalacrocorax africanus, African openbill stork Anastomus lamelligerus, cattle egret Bubulcus ibis, wattled lapwing Vanellus senegallus, African darter Anhinga rufa and white-faced duck Dendrocygna viduata. In the wet season the dominant species comprised 68%, while in dry season – 52.5% of all birds recorded. Significant seasonal differences in the numbers of individuals were shown for the following species: African reed cormorant, great egret, squacco heron, wattled lapwing and pied kingfisher. Insectivorous and omnivorous birds were more abundant in wet season, while piscivorous, carnivorous and plant eating birds in dry season. These differences can be related mainly to seasonal variation in the availability of food as well as to the timing of breeding.
6

Notes on quill mites (Acariformes, Syringophilidae) from aquatic birds in North America

84%
Skoracki M., Bochkov A. V., OConnor B. M.
Acta Parasitologica
|
2011
|
tom 56
|
nr 3
A new monobasic genus of parasitic mites, Phalarophilus fulicarius gen. nov., sp. nov. (Acariformes, Syringophilidae) is described from feather quills of Phalaropus fulicarius (Linnaeus) (Charadriiformes, Scolopacidae) from USA. Females of the new genus differs from those of the genus Bochkovia Skoracki et OConnor, by having the rounded posteriorly stylophore, edentate movable cheliceral digits, propodonotal setae arranged 2-1-1-2, thin and smooth dorsal setae of the idiosoma, smooth dorsal setae of legs I and II, and by the presence of setae vsI; males are distinguished by the presence of the propodonotal setae arranged 2-1-1-1-1. Additionally, two new syringophilid species recorded from aquatic birds in North America and three new host associations of these mites are recovered.
7

Analysis of spatial point pattern shows no desertion of breeding Mute Swan areas by the other waterbirds within fishpond

84%
Gayet G., Calenge C., Broyer J., Mesleard F., Vaux V., Fritz H., Guillemain M.
Acta Ornithologica
|
2016
|
tom 51
|
nr 2
Mute Swan Cygnus olor numbers have recently increased in a dramatic fashion in Western Europe and in North America, suggesting there could be potential consequences for the rest of the waterbird community. Breeding Mute Swan pairs may behave territorially towards other waterbirds, taking advantage of their larger size, and hence cause concern regarding their potential effects on waterbird communities. We studied how the within-site distributions of breeding Mute Swans and other waterbirds were related to each other, in order to assess if there is support to the assertion that breeding Mute Swans may affect the distribution of the other waterfowl within waterbodies. We mapped waterbird and swan distribution within fishponds during the Mute Swan breeding period. Relying on spatial point pattern analysis, our first finding is that breeding Mute Swans were located in the vicinity of the other waterbirds, using the same area within fishpond. Waterbirds do not completely desert the area used by breeding swan pairs within a waterbody, hence not supporting the claim that Mute Swans dislodge the other species. If an exclusion process by Mute Swan breeding pairs towards waterbirds exists, it is not strong enough to generate deserted areas by waterbirds around breeding Mute Swans. Our second finding is that breeding Mute Swans were not located where the density probability function for waterbird presence was the greatest within a fishpond, i.e. breeding Mute Swans were not located in the centre of groups formed by other waterbirds within each fishponds. This may indicate slightly different micro-habitat preferences or use within fishponds, or could indicate the potential occurrence of interactions. In conclusion, these results question whether the increasing Mute Swan populations actually directly threaten the other waterbird communities in such habitats, and require population control as is often claimed.
8

Can poor foraging habitat [an inundated opencast sulphur mine] be attractive to the great crested grebe [Podiceps cristatus]?

84%
Gwiazda R.
Oceanological and Hydrobiological Studies
|
2009
|
tom 38
|
nr 3
135-139
9
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

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

84%
Chatterjee A., Ghosal S., Chakrabarti P.
International Letters of Natural Sciences
|
2015
|
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.
10

The use of canonical correlation analysis for ornithological evaluation of lakes in W Poland

84%
Kuczynski L., Kosinski Z., Winiecki A.
Biological Letters
|
2006
|
tom 43
|
nr 1
11

The dynamics of waders numbers during the spring migration in flood plains of the Narew River valley near Wizna

84%
Gorski A., Nowakowski J. J.
The Ring
|
1999
|
tom 21
|
nr 2
12

Numbers of some bird species in the Slonsk Nature Reserve in 1994-1997

84%
Bartoszewicz M., Wypychowski K., Engel J.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 2
13
Artykuł dostępny w postaci pełnego tekstu - kliknij by otworzyć plik
Content available

Nematofauna of ducks of the genus Melanitta [Mergini, Anseriformes] from the south Baltic Sea

67%
Kavetska K. M.
Wiadomości Parazytologiczne
|
2008
|
tom 54
|
nr 2
155-157
14

Możliwości intensyfikacji hodowli kaczki krzyżówki (Anasplatyrhynchos L.) na stawach rybnych

67%
Bonczar Z.
Acta Agraria et Silvestria. Series Zootechnica
|
1991
|
tom 29
15

Impact of waterbirds on chemical and biological features of water and sediments of a large, shallow dam reservoir

67%
Gwiazda R., Woznica A., Lozowski B., Kostecki M., Flis A.
Oceanological and Hydrobiological Studies
|
2014
|
tom 43
|
nr 4
16

Reproductive parameters of Caspian Gull Larus cachinnans Pallas, 1811 in different habitats nearby and away fish ponds

67%
Gwiazda R., Neubauer G., Betleja J., Bednarz L., Zagalska-Neubauer M.
Polish Journal of Ecology
|
2015
|
tom 63
|
nr 1
Reproductive performance of gulls depends on a variety of factors, but food abundance and its availability are among the most important. Clutch and egg sizes in gulls are found to be strongly influenced by food availability, thus better reproductive performance in the colony with greater fish availability (near fish ponds) was expected in that study. We compared the reproductive traits (clutch size, volume of eggs in the full clutch, relative volume of the C-egg (the third egg in gull's clutches) and hatching success) of Caspian Gull Larus cachinnans in five inland colonies in Poland located at a gravel pit, a lake, a river and two dam reservoirs. Differences in the clutch size between sites were found, with the lowest at a lake. We found similar clutch volume in all studied colonies. C-eggs were slightly smaller than A- and B- eggs, in all colonies and all study years, but the relative volume of C-egg in colonies located near fish ponds (<10 km) was significantly greater compared to colonies located far away. This may be explained by high fish availability in fishponds in comparison to other habitats. However hatching success (the ratio of the number of hatched chick to the number of eggs laid) was highest in the colony at the lake. This indicates that both inland habitats a gravel pit and a lake offered good food conditions for large gulls when fish ponds are nearby.
17

The contribution of round goby [Neogobius melanostomus Pallas, 1811] to the food supply of cormorants [Phalacrocorax carbo Linnaeus, 1758] feeding in the Puck Bay

67%
Bzoma S.
Bulletin of the Sea Fisheries Institute
|
1998
|
nr 2
18

Migration of water-and-marsh birds in the Valley of the Middle San [South-Eastern Poland]

67%
Kunysz P., Hordowski J.
Acta Zoologica Cracoviensia
|
1992-1993
|
tom 35
|
nr 2
19

Feather mites [Acari, Astigmata] of water birds of the Slonsk Nature Reserve with the description of a new species

59%
Dabert J.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 2
20

The Polish part of the Vistula Lagoon - an important bird area

59%
Goc M., Iliszko L.
The Ring
|
1993
|
tom 15
|
nr 1-2
Pierwsza strona wyników Pięć stron wyników wstecz Poprzednia strona wyników Strona / 2 Następna strona wyników Pięć stron wyników wprzód Ostatnia strona wyników
JavaScript jest wyłączony w Twojej przeglądarce internetowej. Włącz go, a następnie odśwież stronę, aby móc w pełni z niej korzystać.