Papers by Miklós Gábor Heltai
Differences in food preferences between two sympatric canids, the golden jackal (Canis aureus), w... more Differences in food preferences between two sympatric canids, the golden jackal (Canis aureus), which is currently spreading from south-east Europe and is a little-known species in Europe, and the red fox (Vulpes vulpes) were investigated. Data on diet composition and food availability were collected over a 13-season period, in a temperate climate agricultural area of Hungary. We found that jackals and foxes preferred small mammals (Ivlev's electivity index, E i s0.38 and 0.39, respectively), and avoided towards wild boar (E i s -0.43 and -0.56, respectively) and cervids (E i s-0.92 and -0.94, respectively). Jackals preferred pheasant less than foxes (E i s0.06 and 0.51, respectively). Within small mammals, both predators preferred the open field living species, with the forest living species being less favoured. The relationship between the available biomass of small mammals, as the primarily important food resource for both canids, and the proportion of consumed biomass of small mammals was not close. This was probably as a result of abundant food resources and high trophic flexibility of the golden jackal and red fox allowing these two closely related carnivores to coexist sympatrically in Central European areas without resource partitioning.
Annales Zoologici Fennici, 2014
ABSTRACT The Eurasian badger (Meles meles) and the red fox (Vulpes vulpes) are the two most wides... more ABSTRACT The Eurasian badger (Meles meles) and the red fox (Vulpes vulpes) are the two most widespread medium-sized carnivores in Hungary. We hypothesise that niche segregation between these species may be observed in the selection of burrow sites. Burrowsite selection was investigated by evaluating habitat preferences for three habitat categories (forest covered, open and mixed). Differences between overall habitat selection by the two species within the study areas were not significant, but the area ratios of habitat categories within the immediate surroundings (400 m) of burrows were significantly different. Around the red fox burrows, the ratios of mixed habitats and small-mammal hole densities were significantly higher (p < 0.001 and p = 0.007, respectively) than around those of the Eurasian badger. This led us to conclude that the red fox, due to its diet, may select sites rich in small mammals, which is manifested in the preference and use of mixed habitats.
BEVEZETÉS A nemzetközi természetvédelemben elfogadott módszer az egyes fajok elterjedésének, állo... more BEVEZETÉS A nemzetközi természetvédelemben elfogadott módszer az egyes fajok elterjedésének, állományhelyzetének értékelésére az IUCN módszertan szerinti kategorizálás (category) és kritérium rendszerekbe sorolás (criteria). Bár a kategorizálás szigorú feltételrendszerhez kötött (1. táblázat) az értékelések során gyakran szakértőkhöz fordulnak és valójában a besorolás egyéni szakértői vélemények (educated guess vs. evidence-based conservation) alapján történik. Erre aktuális példaként szolgál a BioREGIO Carpathians nemzetközi projekt, amely 2012-ben vette kezdetét. Kategória nemzetközi neve Kategória magyar neve Rövidítés Leírás A vizsgálatban használt megfeleltetés Critically Endangered Súlyosan veszélyeztetett CR A: Múltbéli populáció csökkenés ≥ 90 % B: Elterjedési terület < 100 km 2 C: Kis méretű populációk < 250 D: Elszigetelt populációk < 50 E: Matematikai modellezés Fokozottan védett Endangered Veszélyeztetett EN A: Múltbéli populáció csökkenés ≥ 70 % B: Elterjedési ...
We give a comprehensive overview of the observation of the golden jackal or reed wolf (Canis aure... more We give a comprehensive overview of the observation of the golden jackal or reed wolf (Canis aureus), from the beginning of the 1800s until 1995 in Hungary, based on the available literature. We discuss 57 observations from the period surveyed, seven reports that mentioned canids but certainly not a jackal, 26 questionable cases, and 16 records that
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.
We give a comprehensive overview of the observation of the golden jackal or reed wolf (Canis aure... more We give a comprehensive overview of the observation of the golden jackal or reed wolf (Canis aureus), from the beginning of the 1800s until 1995 in Hungary, based on the available literature. We discuss 57 observations from the period surveyed, seven reports that mentioned canids but certainly not a jackal, 26 questionable cases, and 16 records that
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.
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Papers by Miklós Gábor Heltai
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.
certainly refer to jackals. These included records from historical Hungary as well: two from present Serbia, one from present Ukraine, one from present Croatia, and six from present
Romania. Until the 1920s, the jackal was observed in Hungary only along major rivers and between the Danube and Tisza, and records are almost missing in the 1920-1945 period,
whereas in the last 50 years surveyed, the number of observations increased. Since 1980 the Hungarian jackal population is constantly increasing, its beeing estimated at above 1500 individuals in 2007. We discuss the distribution pattern observed in the light of the geographical and historical changes that took part in the country in the last few decades.