Nest site characteristics and nest densities of ardieds (night heron: Nycticorax nycticorax, grey heron: Ardea cinerea, and little egret: Egretta garzetta) in the Nallıhan bird sanctuary (Sarıyar reservoir, Ankara, Turkey)

Bu çalışmada, Nallıhan Kuş Cenneti'nde balıkçılların (gri balıkçıl: Ardea cinerea; gece balıkçılı: Nycticorax nycticorax ve küçük akbalıkçıl: Egretta garzetta) yuvalanma yeri özellikleri ve yuva yoğunlukları araştırılmıştır. Üreme kolonisinin bulunduğu alanda, 92 tanesi söğüt ve 74 tanesi kavak ağacı olmak üzere, toplam 166 ağaç vardır. Bu ağaçlardan 105'inin, balıkçıllar tarafından yuvalama amacı ile işgal edildiği gözlenmiştir (63 söğüt and 42 kavak). Örneklenen ağaçlarda (n: 40), toplam olarak 395 yuva (gece balıkçılı: 254, gri balıkçıl: 103; küçük akbalıkçıl: 38) sayılmıştır ve bu yuvalardan 244'ü söğüt ağaçlarında (gece balıkçılı: 170; gri balıkçıl: 44; küçük akbalıkçıl: 30); 151'i ise kavak ağaçlarındadır (gece balıkçılı: 84; gri balıkçıl: 59; küçük akbalıkçıl: 8). Yuvalarla işgal edilmiş ağaçlardaki toplam yuva sayısı 1037 ve yuva yoğunluğu ise 0,027 yuva m2 olarak hesaplanmıştır. Bununla birlikte balıkçıllara ait yuva yoğunlukları açısından söğüt (4.07 ± 3.54 yuva/ağaç) ve kavak ağaçları (2.52 ± 2.04 yuva/ağaç) arasındaki farklılık istatistiksel olarak önemsiz bulunmuştur.

Nallıhan Kuş Cenneti’ndeki (Sarıyar rezervuarı, Ankara) balıkçılların (gece balıkçılı: Nycticorax nycticorax, gri balıkçıl: Ardea cinerea and küçük ak balıkçıl:Egretta garzetta) yuva yeri özellikleri ve yuva yoğunlukları

In this study, the nesting site characteristics and nest densities of ardeids (grey heron: Ardea cinerea; night heron: Nycticorax nycticorax, and little egret: Egretta garzetta) were investigated in Nallıhan Bird Sanctuary. It was found that the site of breeding colony had 166 trees consisting of willows (92) and poplars (74); 105 of which (63 willow and 42 poplar) were found occupied by ardeid nests. In the sampled trees (n = 40), 395 nests (night heron: 254, grey heron: 103, and little egret: 38) were located; 244 of which were located in willows (night heron: 170, grey heron: 44; little egret: 30) and 151 (night heron: 84, grey heron: 59; little egret: 8) in poplars. Also the number of nests and nest density for the 105 occupied trees were calculated as 1037 and 0,027 nest/m2, respectively. However, the difference between willows (4.07 ± 3.54 nest/tree) and poplars (2.52 ± 2.04 nest/tree) in terms of nest densities of ardeids were statistically insignificant.

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Arendt, J.W. and Arendt, I.A. 1988. Aspects of the breeding biology of the cattle egret Bubulcus ibis in Montserrat, West Indies and its impact on the nest vegetation. Colonial Waterbirds 11: 72-84
Baxer, G.S. 1994. The influence of synchronous breeding natal tree position and rainfall on egret nesting success. Colonial Waterbirds 17: 120-129
Buckley, F.G. and Buckley, P.A. 1980. Habitat selection and marine birds. In: Behavior of Marine Animals: Marine Birds (eds. J. Burger, B.L. Olla, and H. E. Winn). Plenum Press. New York, pp.69-112 .
Burger, J. 1978. The pattern and mechanism of nesting in mixed species heronries In: Wading Birds (eds. A. Sprunt, J. C. Odgen and S. Wincker), National Audubon Society Research Report No.7. New York, pp. 45-58.
Burger, J. 1982. On the nesting location of cattle egrets Bubulcus ibis in South African heronries. Ibis 124: 523-529
Burger, J. and Gochfeld, M. 1990. Vertical nest startification in heronry in Madagascar. Colonial Waterbirds 15: 185-192
Ekmekçi, F.G., Yerli, S.V., Ayafl, Z. and Özmen, M. 2000. The Effects of Pollution on Fish in Sarıyar Dam Lake and Its Tributaries. Report: The Scientific and Research Council of Turkey Project No: 1846; Agriculture, Forestry and Food Technologies Research Grant Committee, Ankara.
Fasola, M. and Alieri, R. 1992. Nest site characteristics in relation to body size in herons in Italy. Colonial Waterbirds 15: 185-192
Hafner, H. 2000. Heron nest site conservation. In: Heron Conservation (eds. A.J. Kushlan and H. Hafner). Academic Press, U.S.A. pp. 201-215
Hafner, H. and Britton, R. 1983. Changes of foraging sites by nesting Little Egrets Egretta garzetta L. in relation to food supply. Colonial Waterbirds 6: 24-30
Hafner, H. and Fasola, M. 1992. The relationship between feeding habitat and colonial nesting Ardeidae. In: Managing Mediterranean Wetlands and their Birds (eds. H. Hafner, M. Fasola) IWRB press, London. pp.194-201.
Hilaluddin, J., Shah, N. and Shwal, T.A. 2003. Nest site selection and breeding success by cattle egret and little egret in Amroha, Uttar Pradesh, India. Waterbirds 26: 444-448
Kazantzidis, S., Hafner, H. and Goutner, V. 1996. Comparative breeding ecology of little egret (Egretta garzetta garzetta) in the Axios Delta (Greece) and the Camargue (France). Revve Ecologie (Teree et vie) 49: 53-62.
Kazantzidis, S., Goutner, V., Pyrovetsi, M. and Sinis, A. 1997. Comparative nest site selection and breeding success in 2 sympatric ardieds, black-crowned Nightheron Nycticorax nycticorax and little egret Egretta garzetta in the Axios Delta, Mecidonia, Greece. Colonial Waterbirds 20: 505-517.
Kiziro¤lu, ‹. 1989. Türkiye Kuflları. Orman Genel Müdürlü¤ü Yayını, Ankara, 314 s.
Kiziroğlu, i. 1993. The Birds of Türkiye (Species List in Red Data Book). Turkish Association for the Conservation of Nature and Natural Resources. Publication No: 20.48. p
Kılıç, D.T. and Eken, G. 2004. Important Birds Areas of Turkey. Nature Society Press, Ankara,
Ludwig, E., Vanicsek, L., Torok, J. and Csorgo, T. 1994. The effect of nest height on the seasonal pattern of breeding success in blackbirds Tardus merula. Ardea 83: 411-418.
Martin, T.E. 1996. Fitness costs of resource overlap among coexisting bird species. Nature 380: 338-340.
Moser, M. 1984. Resource partitioning in colonial herons with particular reference to the grey heron Ardea cinerea L. and purple heron Ardea purpurea L. in the Camarange South France. Ph.D. thesis. University of Durham, U.K.
Naugle, D.E., Johnson, R.R., Meeks, W.A. and Higgins, K.F. 1996. Colonization and growth of a mixed-species heronry in South Dakota. Colonial Waterbirds 19: 199-206.
Parejo, D., Sacchez, J.M. and Aviles, J.M. 1999. Factors affecting the nest height of three heron species in heronries in the South-West Spain. Ardeola 42: 227-230.
Perktafl, U. and Ayafl, Z. 2005. Birds of Nallıhan Bird Paradise (Central Anatolia, Turkey). Turkish Journal of Zoology. 29: 45-59
Rohlf, F.J. 2003. TPSdig, Version 1.38. Ecology and Evolution, SUNY at Stony Brook. http://life.Bio.SUNYSB.edu/morph/morph.html Rosenzweig, M.L. 1981. A theory of habitat selection. Ecology 62: 327-335.
Schoener, T.W. 1974. Resource partitioning in ecological communities. Science 185: 27-29.
Subramanya, S. 1996. Distribution, status and conservation of Indian herons. Journal of Bombay Natural History Society 93: 459-486.
Thompson, D.H. 1977. Feeding areas of great blue herons and great egrets within the floodplains of the Upper Mississippi River. Colonial Waterbirds 2: 202-213.
Wiens, J.A. 1989. The Ecology of bird’s communities, Foundation and patterns. Cambridge University Press. London.