Impact of human disturbance in Japan on the distribution and diel activity pattern of terrestrial mammals

Ikeda, Takashi; Higashide, Daishi; Tomoya, Shichijo,

doi:10.1016/j.jnc.2022.126293

Cited by 13 publications

(4 citation statements)

References 56 publications

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“…Our results only indicate the probability of potential occurrence and do not represent real changes in the species distribution or habitat area [48]. In addition to the environment, the main factors affecting the distribution of the species include various biological and nonbiological factors, such as competition, disease, and human disturbances [49].…”

Section: Discussionmentioning

confidence: 77%

Time to Step Up Conservation: Climate Change Will Further Reduce the Suitable Habitats for the Vulnerable Species Marbled Polecat (Vormela peregusna)

Cheng¹,

Han²,

Lin

et al. 2023

Animals

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Habitat loss and human threats are putting the marbled polecat (Vormela peregusna) on the brink of extinction. Numerous recent studies have found that climate change will further deteriorate the living environment of endangered species, leading to their eventual extinction. In this study, we used the results of infrared camera surveys in China and worldwide distribution data to construct an ensemble model consisting of 10 commonly used ecological niche models to specify potential suitable habitat areas for V. peregusna under current conditions with similar environments to the sighting record sites. Changes in the suitable habitat for V. peregusna under future climate change scenarios were simulated using mid-century (2050s) and the end of the century (2090s) climate scenarios provided by the Coupled Model Intercomparison Project Phase 6 (CMIP6). We evaluated the accuracy of the model to obtain the environmental probability values (cutoff) of the V. peregusna distribution, the current distribution of suitable habitats, and future changes in moderately and highly suitable habitat areas. The results showed that the general linear model (GLM) was the best single model for predicting suitable habitats for V. peregusna, and the kappa coefficient, area under the curve (AUC), and true skill statistic (TSS) of the ensemble model all exceeded 0.9, reflecting greater accuracy and stability than single models. Under the current conditions, the area of suitable habitat for V. peregusna reached 3935.92 × 104 km2, suggesting a wide distribution range. In the future, climate change is predicted to severely affect the distribution of V. peregusna and substantially reduce the area of suitable habitats for the species, with 11.91 to 33.55% of moderately and highly suitable habitat areas no longer suitable for the survival of V. peregusna. This shift poses an extremely serious challenge to the conservation of this species. We suggest that attention be given to this problem in Europe, especially the countries surrounding the Black Sea, Asia, China, and Mongolia, and that measures be taken, such as regular monitoring and designating protected areas for the conservation of vulnerable animals.

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Section: Discussionmentioning

confidence: 77%

Time to Step Up Conservation: Climate Change Will Further Reduce the Suitable Habitats for the Vulnerable Species Marbled Polecat (Vormela peregusna)

Cheng¹,

Han²,

Lin

et al. 2023

Animals

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“…Temporal niche segregation might not have occurred between the two species in the present study. Avoiding competition over unpredictable and ephemeral resources (i.e., carrion) could be insufficient to cause a shift in the activity pattern of weasels, unlike factors which consistently affect the activity pattern (e.g., activity patterns of staple prey, thermal environment, human activity [Kronfeld-Schor and Dayan 2003;Ikeda et al 2022]). Japanese macaques and sika deer avoided carrion and never fed on it.…”

Section: Discussionmentioning

confidence: 99%

Scavenging on a Carcass of Sika Deer by Introduced Raccoon Dogs (Nyctereutes procyonoides) in Spring: A Case Report in the World Heritage Site of Yakushima Island, Japan

Kurihara

2023

Mammal Study

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Understanding the behavior and ecology of non-native species is important to assess their impact on food webs and ecosystem functions and to facilitate the management of non-native species. The present study reports a case of scavenging on a deer carcass by mammals, especially introduced raccoon dogs and native Japanese weasels, in the World Heritage Site of Yakushima, Japan. A sensor camera was placed near the carcass from March to May 2022 to record scavenging behavior of mammals. Out of at least six species of mammals filmed, raccoon dogs and weasels fed on the carcass. Raccoon dogs almost monopolized the carcass, i.e., raccoon dogs were filmed around carrion more frequently and spent more time scavenging than weasels. Raccoon dogs and weasels were filmed around the carcass at similar times in a day, and no overt aggression was observed between the two species, but weasels were displaced by raccoon dogs. Japanese macaques and sika deer avoided and never fed on carrion. The present study suggests that raccoon dogs contribute to carrion decomposition in the World Heritage Site of Yakushima and that comprehensive studies of carrion availability and the scavenger community could help promote the management of introduced raccoon dogs in Yakushima.

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“…Livestock grazing also leads to decreased bamboo biomass and cover, resulting in a tendency for giant pandas to use less‐disturbed habitats (Hull et al 2014, Wang et al 2019). In addition to responding with an altered spatial distribution, wildlife also responds to human disturbance by changing their activity patterns (Karanth et al 2017, Ikeda et al 2022). For instance, a study in Nepal reported that although the activity range of tigers ( Panthera tigris ) in the reserve overlapped with that of humans, the animals' pattern of activity avoided the peak periods of human activity (Carter et al 2012).…”

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confidence: 99%

Synergistic effects of anthropogenic disturbances on giant pandas

Pu,

Feng,

Huang

et al. 2024

J Wildl Manag

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Livestock grazing and the collection of bamboo shoots are the main threats to giant panda (Ailuropoda melanoleuca) habitat in the Liangshan Mountains in China. It is important to clarify the effect of these disturbances to the giant panda to formulate targeted management policies. Based on species distribution models and daily activity models, we investigated the effects of livestock grazing and bamboo shoot collection on giant pandas from May 2021 to July 2022. Our results indicated the giant panda's suitable habitat in the reserve covered 51.83 km2 (15.02% of the reserve area). Grazing and bamboo shoot collection led to losses of 19.08 km2 and 7.68 km2 of suitable habitat, respectively. Together, the 2 activities resulted in a loss of 28.35 km2 of suitable habitat, which was more than half of the area of panda habitat. The areas of suitable habitat for giant pandas significantly overlapped with the areas affected by both disturbances. Giant pandas did not show significant differences in daily activity rhythms under a single disturbance, but the daily activity rhythms of giant pandas differed when we compared the area combining the 2 disturbances with the undisturbed area. Our study reveals that the anthropogenic disturbances in the reserve have varying effects on the suitable habitat range and daily activity rhythm of giant pandas and evidence of a synergistic effect. Therefore, when formulating relevant conservation policies, it is important to fully evaluate the extent and characteristics of anthropogenic disturbances in shaping the population distribution and habitat preferences of the giant panda and other wildlife to enhance the efficacy of conservation management practices.

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Impact of human disturbance in Japan on the distribution and diel activity pattern of terrestrial mammals

Cited by 13 publications

References 56 publications

Time to Step Up Conservation: Climate Change Will Further Reduce the Suitable Habitats for the Vulnerable Species Marbled Polecat (Vormela peregusna)

Time to Step Up Conservation: Climate Change Will Further Reduce the Suitable Habitats for the Vulnerable Species Marbled Polecat (Vormela peregusna)

Scavenging on a Carcass of Sika Deer by Introduced Raccoon Dogs (Nyctereutes procyonoides) in Spring: A Case Report in the World Heritage Site of Yakushima Island, Japan

Synergistic effects of anthropogenic disturbances on giant pandas

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