* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
Download Why large carnivores? Large carnivores, as they stand at the top of
Survey
Document related concepts
Transcript
Why large carnivores? Large carnivores, as they stand at the top of the food chain, have a determining role in the ecosystem of forests. During their hunting activity they select the injured and weak animals regulating by that the proliferation of the population of prey animals. That way they help to maintain the delicate balance of the ecosystem. From among large carnivores of the Carpathian Basin wolf and lynx live in Hungary. The lynx had stable population until the end of the 19th century, while there was a stable wolf population until the middle of the 20th century. Afterwards, on account of habitat degradation and heavy hunting, both the lynx and wolf population collapsed. Towards the end of the 20th century both species were extinct in Hungary, only seldom was a specimen prowling in the country heard about. From the 1980-90’s this kind of occasional observations became more frequent. Several animals appeared and resettled in certain places of the Hungarian forests. A natural re-colonization has started. At the same time their appearance causes some problems, too. Farmers and gamekeepers fear for their cattle. Even the general public thinks that wolf and lynx are bloodthirsty and vicious animals. But these negative assumptions are generally baseless. Wolf and lynx avoid humans if they can. They are very careful animals, living a hidden life. They hunt and kill only of hunger. At the same time the role of large carnivores in the ecological cycle is indispensable. Their conservation is the common interest of all of us. Some more information about wolf and lynx in Hungary Wolf (Canis lupus) Distribution The European wolf (hereinafter wolf) is the second largest mammalian predator of Europe. Owing to its remarkable adaptability the wolf can be found in a wide range of habitats throughout Asia, Europe and North America. Over the last few centuries its population has substantially decreased and its distribution became patchy as a result of ruthless killing and habitat deterioration. Its situation is especially worrying in Europe. The species virtually disappeared from the western parts of Europe and only isolated patches are found in the Iberian and Apennine peninsulas. Relatively large populations survived in Eastern Europe, the Balkans, the Carpathians, Polish plains, Scandinavia and in the areas further east. Because of the lack of extensive forest cover even in the above mentioned countries the populations are rather isolated, although gradual increase in population size led to new areas being repatriated. The wolf population in Hungary had substantially decreased by the middle of the 20th century and virtually disappeared from much of the country. In the second half of the 20th century sporadic occurrences were recorded in the Transdanubian region and the southern territories between the Danube-and Tisza rivers as well as the Northern Mountain Range east of the Mátra Hills and in Szabolcs-Szatmár-Bereg County. Little and often contradictory information is available as to its present occurrences. It looks as if there had been two main centers of repatriation formed by the end of the 20th century, which differ from each other in both the origins of immigrating individuals and habitat endowments. Relatively constant and frequent occurrences were observed in the north-eastern part of Hungary. The origin of repatriation is the populations of the Carpathian Mountains. There is likely to be a stable and reproducing population in the area of Aggtelek and Zemplén. These habitats were re-filled by migrating individuals deriving from the Slovakian populations. Sporadically they also appear in the Bükk Mountains. According to observations the population tends to occupy the inner and enclosed forest of the mountains. Much of this forest is commercially managed relying mainly on timber and big games. In the last one and a half decades occurrences have also been observed in the open plains of SzatmárBereg County and along the Romanian border. Some immigrating individuals from Bácska County in Yugoslavia also settled in the southern part of the territory between the Danube and Tisza rivers. Much of these forests are intensively managed acacia, black pine, poplar forests. These are the most extensive forest covers of the country. The occurrences in this area are less regular although individuals with cubs have also been observed. Population size Although we lack reliable data regarding the size of the European population especially in the eastern parts, it is estimated to number not more than 25 000 individuals. Following a long period of decline the population is now on the increase. Since there has been no population size estimation carried out in the last four decades there is no reliable data available concerning the size of the stock in Hungary. Based on shooting data, results of questionnaire surveys and field observations, the size of the population shows an overall increasing tendency, in spite of significant fluctuations. During the observations there were 1-3 individuals moving together at a time. The rate of reproduction is, however, unknown. Nevertheless, the size of the wolf population in Hungary didn’t exceed 20-25 specimens even in the best years of distribution between 1980 and 2005. Protection status The official judgment of the status of the wolf is remarkably contradictory. Although the species is endangered and protected in the EU (Convention of Bern, European Council Directive on Protection of Natural and Wild Fauna and Flora 93/743 EEC.), its legal status varies throughout Europe from unrestricted hunting to full protection. This can be regarded as the reflection of the human-wolf conflict itself and has a lot to do with the varying amount of damage caused by wolf in the different countries. In Hungary the wolf had been considered to be extinct until the beginning of the 90’s. Since it was not on the list of protected species its hunting was possible with the permission of the hunting authorities and with the consent of the Nature Conservation Authority. Following its spontaneous repatriation it was declared protected in 1993 and strictly protected in 2001 with an intangible value of HUF 250 000. Distribution of wolf in Europe and in Hungary Lynx (Lynx lynx) Distribution Because of its special habitat requirements and vulnerability the European lynx (hereinafter lynx) has a rather limited distribution restricted to isolated patches across Europe and in Hungary. The European stock is mainly found in the high mountains of Scandinavia, the Alps, the Balkans, and the Carpathians. The Lynx pardina population of the Iberian peninsula is regarded by many as a separate species. Even within its limited area of distribution its population density has decreased substantially. Noteworthy is the fact that in the study titled ‘The Threatened Mammals of Europe’ commissioned by the European Council in 1993 the European lynx is not mentioned for some reason (lack of information?). The lynx was regarded as extinct in Hungary until the mid 1980’s when it reappeared in Hungary due to an increase in its population size in the Carpathians. Its occurrence is mostly confined to the Northern Mountains closely associated with enclosed and undisturbed forests. In the last 15 years the surveys carried out indicated both regular and occasional occurrences in the Börzsöny, Mátra, Zemplén, and Aggtelek regions and occasional occurrences were detected in the Bükk and Tarnavidék Hills. Population size Making an estimation of the real population size of the lynx in Europe is even more difficult than that for the wolf due to its hidden way of life. All in all their number can amount to 3-4000 specimens in Europe, about one third of which live in the Carpathian region. The lack of information and the weak reliability of available data mean a real problem even in Hungary. Estimation of population size has not been taken for four decades. According to our present knowledge - existing shooting statistics, results of the mail questionnaire survey and the sporadic field observations - a realistic estimation can put this figure to no more than 10-15 individuals even in the best years of its distribution in Hungary since 1980 up till now. The rate of reproduction is also unknown. Protection status There is a consensus of opinion with regard to the protection of lynx. The species is endangered and protected in the EU (Bern Convention, 92/43EEC European Council Directive on the Conservation of Natural and Wild Fauna and Flora). However, it is worth to note that according to the EU system of subsidies the lynx is not a priority species. In Hungary the lynx was regarded as extinct until the late 80’s and shooting of occasionally occurring specimens was possible only with a special permission. From 1988 the lynx is strictly protected with an intangible value of HUF 500 000. Since it has obtained a protected status no legal killing has been recorded. Distribution of lynx in Europe and in Hungary