Aplinkos veiksnių įtaka vilkų (Canis lupus lupus L.) populiacijai Lietuvos miškuose /
A considerable amount of the data on wolves in Lithuania is out of date and is not representative of the current situation. To ensure that management of the wolf population in Lithuania is underpinned by a scientific methodology, some data needs to be updated and additional research conducted. This...
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| Format: | Doctoral or Postdoctoral Thesis |
| Language: | Lithuanian English |
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Institutional Repository of Aleksandras Stulginskis University
2012
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| Online Access: | https://vb.asu.lt/ASU:ELABAETD2027776&prefLang=en_US |
| Summary: | A considerable amount of the data on wolves in Lithuania is out of date and is not representative of the current situation. To ensure that management of the wolf population in Lithuania is underpinned by a scientific methodology, some data needs to be updated and additional research conducted. This is a prerequisite to planning the management of the population and its protection. The objective and tasks. The objective of this work is to discover what influence environment factors have on the population of wolves of Lithuania and to present the data necessary for planning the management of the wolf population. To achieve this objective, the following tasks shall be tackled: To discover the true condition of the wolf population in Lithuania according to bio-indicators; To examine the purity of the species; To evaluate the influence of abiotic and biotic factors, as well as anthropogenic factors, on the distribution of wolves in terms of abundance in the biotopes; To discover additional important factors that influence the selection of wolf territories. Novelty and originality. An evaluation of the purity of the wolf population based on morphological features was conducted and single crosses between wolf and dog were detected for the first time in Lithuania. In areas of wolf hunting, different abiotic, biotic and anthropogenic factors that may influence the biotopic distribution of wolves were analysed with a help of GIS technologies for the first time in Lithuania. A region-based quota system was proposed for the entire country to be set on the basis of actual damage done by wolves, and to allow short-term hunting in areas of damage during the off-season. Scientific and practical significance. Existing knowledge on the gender and age structure of the wolf populations, as well as on wellness and the craniometrical index, was updated. Environmental factors that are of a greater importance in their influence on the distribution of wolves were discovered in relation to the places of wolf hunting. It was established ... |
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