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Bao, Yongbin; Han, Aru; Gele, Teri; Song, Ziming; Liu, Xingpeng; Tong, Zhijun; Zhang, Jiquan
The Science of the total environment, 09/2024, Volume: 944Journal Article
The pine caterpillar (Dendrolimus spectabilis Bulter, Lepidoptera: Lasiocampidae), as an ectotherm, temperature plays a crucial role in its development. With climate change, earlier development of insect pests is expected to pose a more frequent threat to forest communities. Yet the quantitative research about the extent to which global warming affects pine caterpillar populations is rarely understood, particularly across various elevations and latitudes. Spring phenology of pine caterpillars showed an advancing trend with 0.8 d/10a, 2.2 d/10a, 2.2 d/10a, and 3.3 d/10a under the SSP1-2.6, SSP2-4.5, SSP3-7.0 and SSP5-8.5 scenario, respectively. There was a maximum advance of 20 d in spring phenology of pine caterpillars during the 2090s, from mid-March to early March, and even late February. This study highlighted the significant advance in spring phenology at elevations >1000 m and lower latitudes. Consequently, the differences in elevational and latitudinal gradients were relatively small as the increasing temperatures at the end of the 21st century. And the average temperature in February–March was effective in explaining theses variability. These findings are crucial for adapting and mitigating to climate change. Display omitted •Global warming has led to a notable advancement in pine caterpillar spring phenology.•Pine caterpillars are earlier by 0 to 48 %, shifting from mid-March to late February.•Significant shifts in pine caterpillar development at >1000 m elevations, 38–38.5°N.
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