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Tytuł:
Distribution and numbers of wolves in Poland
Autorzy:
Okarma, H.
Powiązania:
Acta Theriologica
Opis:
The wolf Canis lupus Linnaeus, 1758 has had "game species" status since the late 1970's. Hunting is permitted only by licensed hunters from August 1 to March 31. Official reports show that recently over 160 wolves were killed during every hunting season in Poland. Numbers and distribution of kills showed that the wolf has expanded its range since the late 1970's and occupied two core areas: northeastern and southeastern Poland.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
The physical condition of red deer falling a prey to the wolf and lynx and harvested in the Carpatian Mountains
Autorzy:
Okarma, H.
Powiązania:
Acta Theriologica
Opis:
Examination was made of the condition of red deer killed by wolves and lynxes in the Bieszczady Mountains over a period of two winters (1981/82 and 1982/83) or shot by hunters. The fat content in the bone marrow of the limbs was taken as a criterion of condition. Important differences were found in the age structure of red deer killed by wolves and lynxes.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Mandible versus long bone marrow fat in red deer
Autorzy:
Okarma, H.
Powiązania:
Acta Theriologica
Opis:
Mandible and long bone marrow fat content of red deer Cervus elaphus Linnaeus, 1758 hinds (N=21) and calves (N=17) killed in the Carpathian Mountains from 1984 to 1988 were examined.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
The trophic ecology of wolves and their predatory role in ungulate communities of forest ecosystems in Europe
Autorzy:
Okarma, H.
Powiązania:
Acta Theriologica
Opis:
Predation by wolves Canis lupus Linnaeus, 1758 in ungulate communities in Europe, with special reference to the multi-species system of Białowieża Primeval Forest (Poland/Belarus), was assessed on the basis results of original research and literature. In hisstorical times (post-glacial period), the geographical range of the wolf and most ungulate species in Europe decreased considerably. Community richness of ungulates and potential prey for wolves, decreased over most of the continent from 5-6 species to 2-3 species. The wolf is typically an opportunistic predator with a highly diverse diet; however, cervids are its preffered prey.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Craniometrical characteristics of wolves Canis lupus from Poland
Autorzy:
Okarma, H.
Buchalczyk, T.
Powiązania:
Acta Theriologica
Opis:
Skulls of 145 adult wolves Canis lupus Linnaeus, 1758 from two areas of the highest wolf density in Poland (78 from the Carpathian Mountains and 71 from the Białowieża Primeval Forest) were measured using 17 selected characters. Values of cranial characters measured were similar to those of previous studies from middleeastern Eurasia.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Speed and actual distances travelled by radiocollared wolves in Białowieża Primeval Forest (Poland)
Autorzy:
Okarma, H.
Musiani, M.
Jędrzejewski, W.
Powiązania:
Acta Theriologica
Opis:
The relationship between the straight line distances (SLD), obtained from telemetry locations, and actual distances travelled by wolves Canis lupus (ADT), measured by snowtracking, was investigated in BIałowieża Primeval Forest, E Poland, in winter 1995/96.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
Tytuł:
Spatial organization and social relations in the Eurasian lynx population in Bialowieza Primeval Forest, Poland
Autorzy:
Okarma, H.
Schmidt, K.
Jedrzejewski, W.
Powiązania:
Acta Theriologica
Opis:
The home range size, spacing pattern and intraspecific relations in the lynx Lynx lynx (Linnaeus, 1758) were studied in Białowieża Primeval Forest (eastern Poland), in 1991-1996. Eighteen lynx (11 males and 7 females) were captured and radio-collared. The mean autumn-winter home range size was 165 km2 for males and 94 km2 for females. In spring-summer, it was 143 and 55 km2, respectively. The mean life-time home ranges were 248 km2 for males and 133 km2 for females. Male home range size did not change significantly between autumn-winter and spring-summer seasons, however, their ranges icreased by 40-90% just before and during the mating season (December-March). The home range of females in the autumn-winter season was almost twice as large compared with the spring-summer period (94 vs 55 km2). The smallest home ranges were observed in breeding females during the two months after parturition (10 km) and these grew until the following spring. The home ranges calculated for 5-month periods shifted on average 4 km in adult males, 2.7 in adult females and 4.7 km in subadult males. One of the farthest shifts in the adult male range (8.7 km) was explained by the death of a neighbouring resident. The average overlap between adult males' ranges was 30%, while those between females was 6%. The largest overlap occured between adult males and females (62%) as well as between adult and subadult males (75%). The lynx showed a tendency to avoid each other. The average distance between neighbouring adult males was 11.6 km, and they were never found closer than 1 km to each other. The average distance between neighbouring females was 8.1 km. Besides a few meetings between males and females (during and outside the mating season), they were located separately (4.4 km from each other, on average). In 93% of the cases an adult female was recorded with her dependent kittens. It was concluded that home range size and spacing pattern in male lynx depend on the distribution of females, whereas spacing in females was determined by food-related factors.
Dostawca treści:
RCIN - Repozytorium Cyfrowe Instytutów Naukowych
Książka
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