Golden jackal expansion in Europe

ǂa ǂcase of mesopredator release triggered by continent-wide wolf persecution?

Miha Krofel (Avtor), Giorges Giannatos (Avtor), Duško Ćirović (Avtor), Stoyan Stoyanov (Avtor), Thomas Newsome (Avtor)

Povzetek

Top-down suppression by apex predators can limit the abundance and spatial distribution of mesopredators. However, this phenomenon has not been studied over long time periods in humandominated landscapes, where the strength of this process might be limited. Here, we used a multiscale approach to analyse interactions between two canids in the human-dominated landscapes of Europe. We tested the hypothesis that the range expansion of golden jackals (Canis aureus) was triggered by intensive persecution and resulting decline of the apex predator, the grey wolf (Canis lupus). To do so, we (1) reviewed literature to reconstruct the historic changes in the distribution and abundance of the two canid species on the continental scale, (2) analysed hunting data patterns for both species in Bulgaria and Serbia, and (3) surveyed jackal persistence in eight study areas that became re-colonized by territorial wolves. The observed trends were generally consistent with the predictions of the mesopredator release hypothesis and supported the existence of top-down suppression by wolves on jackals. We observed inverse patterns of relative abundance and distribution for both canid species at various spatial scales. In most (seven out of eight) cases of wolf re-colonization of jackal territories, jackals disappeared or were displaced out or to the periphery of the newly established wolf home-ranges. We suggest that wolf extermination could be the key driver that enabled the expansion of jackals throughout Europe. Our results also indicate that topdown suppression may be weakened where wolves are intensively persecuted by humans or occur at reduced densities in human-dominated landscapes, which has important management implications and warrants further research.

Ključne besede

zlati šakal;volk;velike zveri;vrhovni plenilec;kulturna krajina;trofične kaskade;sprostitev mezoplenilcev;Canis aureus;Canis lupus;apex predator;interference competition;mesopredator release;trophic cascades;human-dominated landscapes;

Podatki

Jezik:	Angleški jezik
Leto izida:	2017
Tipologija:	1.01 - Izvirni znanstveni članek
Organizacija:	UL BF - Biotehniška fakulteta
UDK:	630*156
COBISS:	4714150
ISSN:	0394-1914
Št. ogledov:	982
Št. prenosov:	316
Ocena:	0 (0 glasov)
Metapodatki:

Ostali podatki

Sekundarni jezik:	Slovenski jezik
Sekundarne ključne besede:	zlati šakal;volk;Canis aureus;velike zveri;vrhovni plenilec;kulturna krajina;trofične kaskade;sprostitev mezoplenilcev;
Vrsta dela (COBISS):	Delo ni kategorizirano
Strani:	str. 9-15
Letnik:	ǂVol. ǂ28
Zvezek:	ǂiss. ǂ1
Čas izdaje:	2017
DOI:	10.4404/hystrix-28.1-11819
ID:	10911440