1. Role of forest fuelbreaks for browsers: Implications from dietary pattern and food resources survey for sika deer (Cervus nippon).
- Author
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Wen, Peiying, Zhu, Di, Wang, Le, Wu, Feng, Bao, Lei, Wang, Tianming, Ge, Jianping, and Wang, Hongfang
- Subjects
RESOURCE availability (Ecology) ,SIKA deer ,DIETARY patterns ,HERBACEOUS plants ,WOODY plants - Abstract
Fuelbreaks are used to manage wildfires worldwide. Regular mowing within fuelbreaks can alter species composition and transform them into grassland habitats. These changes may provide more herbaceous plants to large herbivores, subsequently influencing their distribution. To clarify the impact of fuelbreaks on herbivores' food resources, we conducted molecular dietary analysis to quantify the dietary composition of sika deer (Cervus nippon) in both the Sino-Russian border fuelbreak and forest interior, with an average distance of 1.6 km away from the fuelbreak. We constructed a local barcode database to enhance the resolution of the molecular dietary analysis. In addition, we surveyed the vegetation in these two habitats to determine the availability of food resources. We also used camera traps to monitor the visitation intensity of sika deer in both habitats. The results indicated that sika deer increased their visitation intensity at the fuelbreak during the snow-free season. The biomass of graminoids and herbaceous plants was high in the fuelbreak. However, the results of the molecular dietary analysis showed that during the snow-free season, the sika deer that visited the fuelbreak consumed fewer herbaceous plants. We used the Jacobs index to determine the dietary preferences of the sika deer and found that they were consistent browsers with a stable preference for woody plants. By assessing habitat quality, specifically the proportion of preferred plants, we found that the habitat quality of the fuelbreak was relatively low. In conclusion, fuelbreaks may attract herbivores. However, for browsers, such as sika deer, the major function of fuelbreaks is not to provide food resources. • Molecular dietary analysis reveals the diet of the sika deer. • Sika deer consistently prefer woody plants and they are browsers. • Fuelbreaks have a lower proportion of palatable plants for sika deer. • For browsers, the major function of fuelbreaks is not to provide food resources. • Sika deer increased their visits at the fuelbreak during the snow-free season. [ABSTRACT FROM AUTHOR]
- Published
- 2024
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