Cascade effects of slope gradient on ground vegetation and small-rodent populations in a forest ecosystem

Lee, Jae-Kang; Hwang, Hyun-Su; Eum, Tae-Kyung; Bae, Ho-Kyoung; Rhim, Shin‐Jae

doi:10.1163/15707563-20191192

Cited by 7 publications

(5 citation statements)

References 35 publications

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“…The climatic factors affect the body mass of animals by directly stimulating their thermogenesis requiring energy (cost), especially in cold conditions or by indirectly modulating their habitat conditions including the characteristics of the vegetation (Wang et al 2006, Guralnick et al 2020). The topographic factors modulate microclimatic conditions and soil conditions, resulting in differences in the composition and structure of vegetation as an essential resource (benefit) for wildlife (Pintado et al 2001, Chun et al 2020, Lee et al 2020). Cover factors determine the availability of diverse food and shelter resources (benefit) for animals, which in turn control their body mass (Muñoz et al 2009, Lee et al 2019).…”

Section: Introductionmentioning

confidence: 99%

Effects of multiple ecological factors on the body mass of small rodents in a forest ecosystem

et al. 2023

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The body mass of animals is directly or indirectly affected by multiple ecological factors. However, the effects of ecological factors on the body mass are controversial, and a comprehensive study dealing diverse ecological factors is rare. This study was performed to determine the effects of ecological factors on the body mass of small rodents in a natural deciduous forest located on Mt Gariwang, Pyeongchang and Jeongseon, South Korea from May 2019 to October 2020. We classified ecological factors into topographic, climatic, cover and demographic factors. Three forest‐dwelling small rodent species, striped field mouse Apodemus agrarius, Korean field mouse A. peninsulae and red‐backed vole Myodes regulus, were captured using the capture–mark–recapture method. The findings showed that the body mass of three rodent species was not regulated by topographic factors. In addition, a high ambient temperature resulted in a heavy body mass for A. agrarius and A. peninsulae, and the A. agrarius body mass was negatively affected by extreme rainfall. The body mass of each rodent species had a specific response to the cover factors: ground vegetation, understory vegetation or downed trees. The three species showed sexual dimorphism and two Apodemus species competed each other. This study reveals that ecological factors affecting body mass differ among species. Our findings contribute to enhancing the understanding of variation in the body mass of animals, particularly small rodents, in response to diverse ecological factors.

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Section: Introductionmentioning

confidence: 99%

Effects of multiple ecological factors on the body mass of small rodents in a forest ecosystem

et al. 2023

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“…Each rodent species shows speciesspecific habitat selection preference depending on its requirements for food and shelter (Radespiel et al 2003). Apodemus agrarius and M. reguluse primarily consume grass and seeds, whereas A. peninsulae prefers tree seeds and acorns (Jo 2015;Lee et al 2020). Therefore, A. peninsulae did not show preference for the 50% thinned stand, where distance among trees is greater than that in the other stands.…”

Section: Microhabitat Factormentioning

confidence: 99%

“…Models were selected using Akaike Information Criterion with corrections for small sample size (AICc) (᭝AICc < 2). selecting habitat in various environments (Coda et al 2014;Lovera et al 2019;Lee et al 2020). This habitat preference of these species depends on the role of ground vegetation cover in providing food and shelter (Lee et al 2019).…”

Section: Microhabitat Factormentioning

confidence: 99%

Short-term effects of tree thinning on microhabitat variables and rodents in Japanese larchLarix kaempferiforest

Son

Lee

Hwang

et al. 2021

Forest Science and Technology

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We examined the short-term effects of tree thinning on microhabitat factors and the abundances of striped field mice Apodemus agrarius, Korean field mice Apodemus peninsulae, and Korean red-backed voles Myodes regulus within a Japanese larch Larix kaempferi forest in South Korea. Three different stands were thinned to 0%, 25%, or 50%. Ground vegetation was higher in the second year of tree thinning than in the first year. In the first year of thinning, ground vegetation was significantly higher in the control than in the 50% thinned stand, whereas the opposite trend was observed in the second year. Mid-story vegetation was higher in the control than in the 50% thinned stand. In the first year of thinning, the sub-overstory vegetation was higher in the control than in the 50% thinned stand. Basal area was the highest in the control stand. Abundances of the three rodent species were higher in the second year of tree thinning than in the first year. The abundance of A. peninsulae was higher in the control than in the 50% thinned stand. Overall, the three rodent species preferred microhabitats with dense ground vegetation. Our results showed that the short-term effects of tree thinning altered microhabitat factors and disturbed microhabitat conditions in the first year; furthermore, the 50% thinned stand did not provide suitable habitats for A. peninsulae. In this study, moderate (25%) tree thinning resulted in a convenient balance between biodiversity conservation and human demands for forest wood.

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“…However, from the perspective of ecosystems as a whole, rodents are primary consumers in the food chain and prey of many natural enemies, such as small felids, small canines, weasels, snakes, and raptors. Rodents are thus one of the most crucial links in the maintenance of ecosystem energy flows and ecological balance [ 2 , 3 ].…”

Section: Introductionmentioning

confidence: 99%

A Systematic Review and Meta-Analysis of the Inhibitory Effects of Plant-Derived Sterilants on Rodent Population Abundance

Wen

Yuan

et al. 2022

Toxins

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Owing to their low minimal environmental risk and other ethical considerations, plant-derived sterilants are used to control rodent populations. However, the effects of plant-derived sterilants are not immediate, and their efficacy on rodent control is controversial, which negatively affects sterilant research and application. Here, a meta-analysis of the available literature was conducted to evaluate the effects of two plant-derived sterilants, triptolide and curcumol, on rodent populations. Using a random-effects and a fixed-effects model, we calculated the weighted mean difference (WMD) and relative risk (RR) and their corresponding 95% confidence intervals (95% CIs). After the application of plant-derived sterilants, the rodent population density tended to decrease. Three outcome-related measures in rodents, i.e., capture rate (RR = 0.31, 95% CI [0.20, 0.47]), pregnancy rate (RR = 0.49, 95% CI [0.40, 0.61]), and sperm survival rate (WMD = −17.53, 95% CI [−28.96, −6.06]), significantly decreased, as shown by a significant reduction of ovarian, uterine, and testicular organ coefficients. However, the number of effective rodent holes did not change significantly after the interventions, indicating that the studied sterilants did not directly eradicate the rodent populations. This study provides a theoretical basis for elucidating the inhibitory mechanisms of plant-derived sterilants on rodent populations and for the rational use of these sterilants.

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Cascade effects of slope gradient on ground vegetation and small-rodent populations in a forest ecosystem

Cited by 7 publications

References 35 publications

Effects of multiple ecological factors on the body mass of small rodents in a forest ecosystem

Effects of multiple ecological factors on the body mass of small rodents in a forest ecosystem

Short-term effects of tree thinning on microhabitat variables and rodents in Japanese larchLarix kaempferiforest

A Systematic Review and Meta-Analysis of the Inhibitory Effects of Plant-Derived Sterilants on Rodent Population Abundance

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