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1

Na Bialorusi wodniczek jest wiecej niz u nas

100%
Cofta T.
Ptaki. Biuletyn Ogólnopolskiego Towarzystwa Ochrony Ptaków
|
1999
|
nr 1
20-21
2

Wodniczka Acrocephalus paludicola [Vieill.] - ptak o niezwyklej biologii rozrodu

86%
Dyrcz A.
Wiadomości Ekologiczne
|
1995
|
tom 41
|
nr 3
177-185
3
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Stanowisko wodniczki Acrocephalus paludicola na Nizinie Mazowieckiej

86%
Pagorski P., Antczak K., Zapart M.
Kulon
|
2006
|
tom 11
103-104
4

Nowe stanowisko wodniczki Acrocephalus paludicola na Rowninie Kurpiowskiej

86%
Neubauer G., Zagalska M.
Przegląd Przyrodniczy
|
2001
|
tom 12
|
nr 1-2
156-157
5

Song behaviour and range use in the polygamous Aquatic Warbler Acrocephalus paludicola

72%
Schmidt V., Schaefer H. M., Leisler B.
Acta Ornithologica
|
1999
|
tom 34
|
nr 2
209-213
Male Aquatic Warblers use three different song types. Playback experiments revealed, that A-type song had an intrasexual function, while C-type song seemed to serve intersexual communication. Song flight contained a higher portion of C-song than spontaneous song. Song flight rate was not constant throughout the breeding season with a maximum in the absence of receptive females. The range use of both sexes was studied using radio-telemetry during two breeding seasons. Males used home ranges of up to 8 ha in size. These home ranges overlapped up to 74% with the ranges of other males. Females used isolated patches of 2.8 to 6.4 ha within activity ranges of 100-160 ha during the mating period. Seasonal variation in mobility of males was correlated to the presence of receptive females. The diurnal mobility of males was constant during the day and decreased after 20:00 when males participated in an evening chorus.
6

Home range and habitat use by Aquatic Warblers Acrocephalus paludicola on their wintering grounds in Northwestern Senegal 

72%
Arbeiter S., Tegetmeyer C.
Acta Ornithologica
|
2011
|
tom 46
|
nr 2
The Aquatic Warbler Acrocephalus paludicola was once a common breeding bird in mesotrophic fen mires all over Central and Western Europe. In the last century large parts of its habitat have been destroyed by wetland drainage and agricultural intensification. Besides protecting the remaining breeding habitats, it is of great importance to preserve suitable migration stopover habitats and wintering grounds to avert the extinction of the species. We determined home-range size and the use of vegetation associations of Aquatic Warblers on the wintering grounds in a flooded plain north of the Djoudj National Park in Senegal. Individual birds (11) were caught in mist nets and equipped with radio transmitters. Locations were assessed by radiotelemetry and a compositional analysis was conducted to determine which vegetation types were preferred within home ranges. Similar to their behaviour on the breeding grounds, the Aquatic Warblers showed no territorial behaviour in their winter quarters. They used home ranges that averaged 4 ha in size, which they shared with conspecifics and other warblers. The home ranges overlapped 54% on average, with a maximum of 90% in an area used by four individuals. The vegetation structure of the wintering habitat is similar to breeding grounds and stopover sites of the species. Preferential vegetation had 80% to 100% cover and consisted of 60 to 90 cm high stands of Oryza longistaminata, Scirpus maritimus or Eleocharis mutata. Most birds stayed more often near the edge of open water, probably for foraging. A constant inundation seems essential, because Aquatic Warblers never occurred in desiccated parts of the study site.
7

Liczebnosc, zagrozenia i sposoby ochrony populacji legowej wodniczki [Acrocephalus paludicola] w Polsce

72%
Dyrcz A., Czeraszkiewicz R.
Notatki Ornitologiczne
|
1993
|
tom 34
|
nr 3-4
231-246
8

Wiadomosci powrotne o wodniczkach [Acrocephalus paludicola] zaobraczkowanych na bagnach Biebrzy

72%
Dyrcz A.
Notatki Ornitologiczne
|
1992
|
tom 33
|
nr 3-4
336-337
9

Wysokie zagęszczenie wodniczki Acrocephalus paludicola w Dolinie Biebrzy wiosną 2010 roku

72%
Polakowski M.
Ornis Polonica
|
2011
|
tom 52
|
nr 1
10

Szansa dla wodniczki. LIFE - Projekt aktywnej ochrony wodniczki

72%
Ekopartner
|
2008
|
nr 03
33
11

Deteriorating weather conditions predict the use of suboptimal stopover sites by Aquatic Warblers Acrocephalus paludicola

72%
Arizaga J., Mendiburu A., Andueza M., Fontanilles P., Fourcade J.-M., Urbina-Tobias P.
Acta Ornithologica
|
2011
|
tom 46
|
nr 2
The Aquatic Warbler Acrocephalus paludicola is a globally threatened songbird and its decline is related to habitat loss. Accordingly, most studies dealing with the stopover ecology of this species have been chiefly focused on the habitat use and the availability of suitable habitats along its route of migration. In contrast, much less attention has been paid to other environmental causes potentially explaining the use of stopover sites. Our aim here was to investigate whether the Aquatic Warbler at an apparently suboptimal stopover site with small area of suitable habitats stops over only during adverse weather conditions. We used data obtained at a suboptimal 0aizubia marshland, northern Iberia) and another optimal (Villefranque, southwestern France) stopover sites during the autumn migration over four seasons (2007-2010). The Aquatic Warbler tended to stop over at Jaizubia in days with rain, a fact that was not so evident at Villefranque, supporting the hypothesis that they used the suboptimal site only, or mostly, when adverse weather conditions forced them to land. In contrast, the optimal habitat was used independently of weather conditions. To properly identify key stopover localities for the Aquatic Warbler, we should consider the potential influence of adverse weather in occurrence of individuals, especially in small areas without preferred habitat.
12

Foraging range and habitat use by Aquatic Warblers Acrocephalus paludicola during a fall migration stopover

72%
Provost P., Kerbiriou C., Jiguet F.
Acta Ornithologica
|
2010
|
tom 45
|
nr 2
13

How many Aquatic Warblers Acrocephalus paludicola stop over in France during the autumn migration?

72%
Jiguet F., Chiron F., Dehorter O., Dugue H., Provost P., Musseau R., Guyot G., Latraube F., Fontanilles P., Sechet E., Laignel J., Gruwier X., Le Neve A.
Acta Ornithologica
|
2011
|
tom 46
|
nr 2
The autumn world population of the endangered Aquatic Warbler Acrocephalus paludicola probably numbers between 23 000 and 69 000 individuals, including 5 000 to 44 000 first-year individuals, depending on variation in breeding success and post-fledging survival. After breeding, the species migrates as early as August along a westerly route along French coast to reach its African wintering grounds. In 2009, French ringers have carried out targeted mist-net- ting to enhance the capture of the species, using tape luring in suitable habitats. Overall, 874 different individuals were captured in France in that year. In 2010 similar ringing effort allowed the capture of 646 different individuals. From this ringing information, we propose a simple method to estimate the number of individuals which stopped in the country during the autumn migration, considering all birds or first-years only. Splitting the country in two parts (northern and southern), the method uses the total number of captures and the number of southern recaptures of birds first ringed in the north. Overall, we estimated that between 24 000 and 30 000 individuals — most of them in their first calendar year — stop in France each year during the fall migration. These estimates suggest that probably all first-year Aquatic Warblers migrate by this western flyway and stop in France to refuel, while adults may partly use a different flyway or may stop in France, but for shorter times or at fewer sites. The proposed figures highlight the importance of maintaining suitable refuelling habitats for the species all along coastal France.
14

Bird-habitat relationships on wet meadows in the Slonsk Nature Reserve, W Poland

72%
Kuczynski L., Osiejuk T. S., Tryjanowski P.
Biological Bulletin of Poznań
|
2000
|
tom 37
|
nr 2
15

Z wizyta w Bretani. Ochrona wodniczki na szlaku migracji

58%
Radziszewski M.
Ptaki. Biuletyn Ogólnopolskiego Towarzystwa Ochrony Ptaków
|
2009
|
nr 1
7
16

Spatial variation in long-term trends in a metapopulation of the globally threatened Aquatic Warbler Acrocephalus paludicola in Poland

58%
Zmihorski M., Lawicki L., Marchowski D., Wylegala P., Part T.
Acta Ornithologica
|
2016
|
tom 51
|
nr 2
The Polish breeding population (3,200-3,250 males) of the globally threatened Aquatic Warbler Acrocephalus paludicola represents almost 25% of the global population. Except for the relatively stable large population in the Biebrza valley in north-east Poland less is known about population trends of peripheral populations in western, central and south-eastern regions of the country and whether trends differ depending on region. We investigated the long-term population dynamics in 38 small populations between 1969-2013 in the four Polish regions. Summarizing the trends of all small populations of Aquatic Warblers showed a significant decline in total number of individuals and declining number of populations over time. However, population trends were distinctly different in the different regions, with stable dynamics in south-east, moderate decline in north-east and sharp decline in the central and western regions. During the study period 19 out of 38 populations became extinct (11 populations in the western region, two in central region, four in north-east region and none in the south-east region). Five of these populations were later recolonised thus suggesting a pattern of metapopulation dynamics. To mitigate the negative trends and increased risk of local and regional extinction in the western and central parts of Poland effort should be put to increasing dispersal among populations by increasing the number of stepping stone patches between the viable large eastern populations and the smaller central and western ones.
17

Najwiekszy projekt ochrony gatunkowej w Polsce

58%
Flor I.
Ptaki. Biuletyn Ogólnopolskiego Towarzystwa Ochrony Ptaków
|
2005
|
nr 3
16
18

Factors affecting fluctuations of the Aquatic Warbler Acrocephalus paludicola population of Byelarussian mires

58%
Kozulin A., Vergeichik L., Stepanovich Y.
Acta Ornithologica
|
2004
|
tom 39
|
nr 1
Data on the density of Aquatic Warbler and plant associations in the marshes of the Sporovskiy reserve (Byelarus') were collected between 1996 and 2003. The species density changed between years from 135 to even 0 males per km². The density and numbers of these birds are governed mainly by changes in the groundwater table caused by floods, droughts or fires. Aquatic Warblers breed successfully when the groundwater table coincides with the topsoil level; the optimal water table lies in the range from 12 cm above the soil to 5 cm below it. Between 1981 and 2002 successful first-clutch breeding occurred 11 times (47.8%); in only 4 years was second-clutch breeding successful (17.3%). First and second clutches both failed in 9 years (39%). The pattern of changes in the population size and data on the recovery of the population size following such unfavourable years indicates that the key factors governing the overall population size are not migration or wintering conditions, but rather the state of the breeding biotopes. Active management of fenland still in its natural state is therefore of paramount importance.
19

Ecology of Aquatic Warblers Acrocephalus paludicola in a fall stopover area on the Atlantic coast of France

58%
Musseau R., Herrmann V., Benard S., Kerbiriou C., Herault T., Jiguet F.
Acta Ornithologica
|
2014
|
tom 49
|
nr 1
The Aquatic Warbler Acrocephalus paludicola is the only endangered songbird in continental Europe. This trans- Saharan migratory bird significantly transits along the French Atlantic coastline during post-breeding migration and the right bank of the Gironde estuary has been identified as an important stopover site. We studied the spatial occupancy strategies of stationing individuals during August of three successive years (2010-2012). We characterized habitat use by radio-tracking individuals revealing relatively small foraging ranges (6.6 ± 2.6 ha on average) with only 1 ha actually exploited (core area), and a relatively high habitat fragmentation rate. Capture-mark-recapture analyses assessed the average stopover duration of individuals and body-mass variations during their stopover. The estimated average stopover duration was 6.46 ± 0.46 days (95% confidence interval: 4.4-9.6). Lean birds tended to forage significantly more than stout birds: on average, they gain 2.81 ± 0.89% of their initial mass each day whereas stout birds only gain 0.12 ± 0.56%. Analyses of droppings characterized the local diet. We noticed that Aquatic Warbler preferentially used partially-flooded or flooded habitats with heterogeneous and rather low vegetation, such as bulrush beds or bulrush beds mixed with reed beds. Orthoptera, Araneae and Hymenoptera represented the largest contributions to the consumed biomass (64.7%, 13.4% and 8.9% respectively). The importance of the fuel deposition rate of lean birds reflects the importance of the estuary as a stopover site for the species. It means that the available resources allow birds to replenish and continue their migration route. However, the sustainability of the site's functionality is questioned because of the evolution of habitats (erosion, rise in water levels and changes in food web).
20

Pomiedzy monogamia a promiskuityzmem - jak ekologia behawioralna tlumaczy rozmaitosc systemow rozrodczych

58%
Dyrcz A., Borowiec M.
Kosmos
|
2006
|
tom 55
|
nr 1
83-93
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