Is it beneficial to be a city dweller? Impact of urban conditions on red fox reproduction DOI
Mateusz Jackowiak, Karolina Jasińska, Jakub Gryz

et al.

Journal of Zoology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 10, 2024

Abstract Various species inhabit cities around the world, and numerous changes in their biology can be observed. Among them, time of reproduction or productivity are often recorded urban populations. Firstly, we compared selected reproductive features (i.e., litter size breeding) two red fox ( Vulpes vulpes ) populations, one living city Warsaw other inhabiting a forest‐field mosaic Central Poland. Secondly, investigated social behaviour an extensive camera trap study (2018–2021). By means generalized linear mixed effects models, identified which factors (fox group size, share natural food, level urbanization, created by using principal components analysis for habitat landscape variables) affected and/or foxes. We found that foxes started breeding about 2 weeks earlier than rural counterparts produced bigger litters (3.98 vs. 3.48 cubs). Opposite to where only pairs adult were reported, population, groups observed with mean number 2.37 individuals. Interestingly, none studied foxes, while was influenced urbanization food. Earlier areas is fairly frequently may attributed altered environmental conditions habitats, higher probably consequence food availability.

Language: Английский

Low contribution of livestock in the grey wolf diet in the area with high availability of free-ranging cattle and horses DOI Creative Commons
Weronika Baranowska, Magdalena Bartoszewicz, Sabina Nowak

et al.

European Journal of Wildlife Research, Journal Year: 2025, Volume and Issue: 71(3)

Published: April 26, 2025

Language: Английский

Citations

0
Following urban predators – long‐term snow‐tracking data reveal changes in their abundance and habitat use DOI
Dagny Krauze‐Gryz, Mateusz Jackowiak, Daniel Klich

et al.

Journal of Zoology, Journal Year: 2024, Volume and Issue: 323(3), P. 213 - 224

Published: April 22, 2024

Abstract Urban habitats differ from natural environments, however some predatory species have become established in cities across the globe. The aim of our study was to compare occurrence red fox and stone marten Warsaw during three time periods (1976–1978, 2005–2008, 2015–2021) different habitats. Generalized linear models were used show factors affecting density indices these two (i.e., frequency tracks each recorded snow tracking on transects). transects increased over explained by habitat type distance city centre. higher more‐natural located far In first period (1976–1978), this only forests riparian areas. last (2015–2021), its frequently built‐up areas cemeteries. From beginning period, a wider range than it colonized all types subsequent periods, but statistically significant increase observed for lower that most seminatural (forests, parks, areas). No relationship between found. We speculate growth urban numbers driven an national population as result anti‐rabies vaccinations. turn, marten, being synanthropic species, present centre study, now occurs

Language: Английский

Citations

3
Alien vs. Native—Influence of Fallow Deer (Dama dama) Introduction on the Native Roe Deer (Capreolus capreolus) Population DOI Open Access
Jakub Gryz, Dagny Krauze‐Gryz, Karolina Jasińska

et al.

Forests, Journal Year: 2024, Volume and Issue: 15(6), P. 1014 - 1014

Published: June 11, 2024

Fallow deer is one of the most widespread alien mammals in Europe. We documented response roe population shortly after fallow was introduced to a hunting ground central Poland. Mean density dropped from 17.6 ind./100 ha 10.5 species introduced. In reference area, where absent, did not change analogue study period. At both sites, mean productivity before introduction similar (1.6 juv./female). However, first 1.4, while it slightly increased 1.75. The presence influenced space use negatively, i.e., number pellet groups decreased with an increase feces. Overall, successful and grew quickly. Yet, economic impact its far satisfactory. same time, negative influence on apparent. This shows that threatening local biodiversity.

Language: Английский

Citations

3
Wolf diet in the Notecka Forest, western Poland DOI Creative Commons
Sabina Nowak, Patrycja Tomczak,

Aleksandra Kraśkiewicz

et al.

Wildlife Biology, Journal Year: 2024, Volume and Issue: 2024(6)

Published: July 24, 2024

We assessed the diet composition of wolves inhabiting Notecka Forest (ca 1400 km 2 ) in western Poland based on analysis scats (n = 261) collected 2008–2021. The study revealed that this large forest tract, consisting mainly pine monocultures, consumed primarily wild ungulates (95.2% biomass). roe deer was essential food item (47.8%), followed by red Cervus elaphus (25.1%) and boar Sus scrofa (18.4%). Wolves supplemented their with medium‐sized mammals, European hare Lepus europaeus (2.8%) Eurasian beaver Castor fiber (1.9%). niche narrow ( B 1.1), there no difference between spring–summer autumn–winter seasons. emphasize significance smallest ruminant, deer, Central Plains.

Language: Английский

Citations

2
Long-term snow-track indices of a Finnish native mesopredator declined while those of an invasive one increased DOI Creative Commons
Vesa Selonen, Pyry Toivonen, Andreas Lindén

et al.

Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: Oct. 31, 2024

Language: Английский

Citations

0
Is it beneficial to be a city dweller? Impact of urban conditions on red fox reproduction DOI
Mateusz Jackowiak, Karolina Jasińska, Jakub Gryz

et al.

Journal of Zoology, Journal Year: 2024, Volume and Issue: unknown

Published: Nov. 10, 2024

Abstract Various species inhabit cities around the world, and numerous changes in their biology can be observed. Among them, time of reproduction or productivity are often recorded urban populations. Firstly, we compared selected reproductive features (i.e., litter size breeding) two red fox ( Vulpes vulpes ) populations, one living city Warsaw other inhabiting a forest‐field mosaic Central Poland. Secondly, investigated social behaviour an extensive camera trap study (2018–2021). By means generalized linear mixed effects models, identified which factors (fox group size, share natural food, level urbanization, created by using principal components analysis for habitat landscape variables) affected and/or foxes. We found that foxes started breeding about 2 weeks earlier than rural counterparts produced bigger litters (3.98 vs. 3.48 cubs). Opposite to where only pairs adult were reported, population, groups observed with mean number 2.37 individuals. Interestingly, none studied foxes, while was influenced urbanization food. Earlier areas is fairly frequently may attributed altered environmental conditions habitats, higher probably consequence food availability.

Language: Английский

Citations

0