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Ocena liczebności populacji lęgowej muchołówki małej Ficedula parva w OSO Puszcza Darżlubska

100%

Sikora A., Neubauer G., Poltorak W., Rohde Z.

Ornis Polonica

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2018

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tom 59

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nr 3

2

How the territory mapping technique reflects yearly fluctuations in the Collared Flycatcher Ficedula albicollis numbers?

100%

Walankiewicz W., Czeszczewik D., Mitrus C., Szymura A.

Acta Ornithologica

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1997

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tom 32

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nr 2

201-207

The territory mapping technique censuses of the Collared Flycatcher F. albicollis were conducted on 25.5 ha plot in the Białowieża National Park. Conducted at the same time within the same plot, an intensive study on the ecology of the Collared Flycatcher allowed us to precisely assess the true number of breeding pairs (all nests were found). The combined version of mapping technique yields numbers which are an average 67% (min. 54, max. 92%) of the true numbers of the F. albicollis breeding pairs. This underestimation is negatively related both to the breeding losses in the Collared Flycatcher (r = -0.87, p = 0.010) and to its breeding density (r = -0.64, p = 0.125). Despite this underestimation the year-to-year changes in numbers obtained by both methods are positively correlated and highly significant (r = 0.84, p = 0.017). After an arithmetical formula was applied (i.e. 1.82 * mapping result - 7.33) only an average 14% of bias occurred.

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Is the Pied Flycatcher Ficedula hypoleuca overcompeted by the Collared Flycatcher Ficedula albicollis in the natural forest of Bialowieza?

80%

Walankiewicz W., Mitrus C., Czeszczewik D., Jablonski P. M.

Acta Ornithologica

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1997

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tom 32

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nr 2

213-217

We studied the fluctuation in 1975-1997 numbers of two species: the Pied Flycatcher Ficedula hypoleuca and the Collared Flycatcher F. albicollis breeding in natural cavities in the primeval deciduous stands of the Białowieża National Park (NE Poland). Both studied birds are commonly regarded as competitors if sympatric. Densities of two flycatchers are positively correlated within 7 plots (pooled data) investigated by a territory mapping method over 22 years (r = 0.71, p < 0.05) and 36 ha plot studied very intensively through 9 years (r = 0.35, p < 0.05). We found no evidence that the Pied Flycatcher density is negatively affected by the dominant Collared Flycatcher when that stronger species has a higher density. Clearly, both species fluctuated in a parallel way which contradicts an earlier generalization. The Pied Flycatcher breeds in Białowieża deciduous stands in much lower densities than the Collared Flycatcher does.

4

Amatorka muszek

80%

Kruszewicz A. G.

Ogrody, Ogródki, Zieleńce

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2011

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nr 09

5

Bastardyzacja mucholowek [Ficedula hypoleuca X Ficedula albicollis] w okolicach Warszawy

80%

Kruszewicz A. G.

Notatki Ornitologiczne

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1993

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tom 34

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nr 3-4

379-382

6

Ksztaltowanie fauny ptakow w wybranych srodowiskach przeksztalconych przez czlowieka

61%

Ptaszek J.

Ten Świat

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1993

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nr 1

4-5

7

Muchołówka szara

50%

Krzyskow T.

Ptaki Polski

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2010

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nr 1[17]

8

Mucholowka - lekkosc owada

50%

Zaleski P. A.

Łowiec Polski

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1994

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nr 10

17

Ograniczanie wyników

2 Acta Ornithologica

1 Notatki Ornitologiczne

1 Ogrody, Ogródki, Zieleńce

1 Ornis Polonica

1 Ptaki Polski

1 Ten Świat

1 Łowiec Polski

2 Czeszczewik D.

2 Kruszewicz A. G.

2 Mitrus C.

2 Walankiewicz W.

1 Jablonski P. M.

1 Krzyskow T.

1 Neubauer G.

1 Poltorak W.

1 Ptaszek J.

1 Rohde Z.

1 Sikora A.

1 Szymura A.

1 Zaleski P. A.

1 2018

1 2011

1 2010

2 1997

1 1994

2 1993