Berkut. 27 (2): 77-80. 2018.

 

Distribution and population densities of diurnal raptors and owls in an urbanized riparian forest, Zambezi region, NE Namibia

G. Kopij

University of Namibia, Department of Integrated Environmental Science; Ogongo Campus, Private Bag, 5520, Oshakati, Namibia
g.kopij@unam.na

Abstract. A territory mapping method has been employed in 2015 to assess the population density of all diurnal raptors and owls in a riparian forest on Zambezi River near Katima Mulilo, NE Namibia. The forest was c. 280 ha in surface area. The following densities (pairs/10 km2) were recorded: Haliaeetus vocifer – 7.1, Polyboroides typus, Milvus aegyptiacus, and Accipiter tachiro – each species with 3.6; Circaetus cinerascens, Kaupifalco monogrammicus each species with 1.8; Tyto alba – 14.3, Strix woodfordii – 10.7, and Glaucidium perlatum – 3.6. In general, the raptor population density in southern Africa is much higher in woodlands and savanna than in grasslands.
Key words: Accipitiformes, Strigiformes, census, habitat, population ecology.

Распространение и плотность гнездования дневных хищников и сов в одном из прибрежных лесов на р. Замбези в Северо-Восточной Намибии. - Г. Копий. - Беркут. 27 (2). 2018. - Исследования проводились в 2015 г. в лесу возле г. Катима-Мулило. Площадь его около 280 га. Плотность населения изучалась путем картирования. Получены следующие данные (пар/10 км2): Haliaeetus vocifer – 7,1, Polyboroides typus, Milvus aegyptiacus и Accipiter tachiro – по 3,6; Circaetus cinerascens и Kaupifalco monogrammicus – по 1,8; Tyto alba – 14,3, Strix woodfordii – 10,7, Glaucidium perlatum – 3,6. Плотность гнездования хищников на юге Африки намного выше в лесной местности и саванне, чем на лугах и пастбищах.
Ключевые слова: Accipitiformes, Strigiformes, учет, биотоп, популяционная экология.

 


 

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