气候变化领域集成服务门户(CCPortal): Predation, but not herbivory, declines with elevation in a tropical rainforest

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DOI	10.1007/s42965-024-00346-9
	Predation, but not herbivory, declines with elevation in a tropical rainforest
	Barlow, B. E. L.; Nakamura, A.; Ashton, L. A.
发表日期	2024
ISSN	0564-3295
EISSN	2661-8982
英文摘要	Naturally, insect herbivore populations are controlled by their plant hosts and predators. These 'bottom-up' and 'top-down' controls influence leaf area lost to herbivory. Bottom-up control of herbivory may be driven by leaf nutrients and plant defences. Top-down control can be driven by abundance and species richness of natural enemies, host or prey specificity, and predation strategies (e.g., active searching or sit-and-wait 'ambush' predation). The relative importance of bottom-up and top-down controls is unresolved but likely to vary spatially and temporally and under different environmental conditions such as changing temperature. We surveyed leaf carbon and nitrogen, leaf area loss, and attacks on plasticine caterpillars across a tropical elevational gradient in Xishuangbanna, Yunnan Provence, China. We show that predatory foraging activity decreases with elevation and temperature, whereas leaf nutrients and leaf area loss from herbivory remains more or less constant. Predation patterns were driven by ants, which are thermophiles and therefore more active, abundant, and diverse at warmer, lower elevations. Leaf nutritional values are important in driving herbivory patterns as herbivory was stable across this gradient, but other factors such as mechanical defences and herbivore-induced plant volatiles demand further study. Elevational studies provide insight into how ecosystem function will shift under climate change. As increasing temperatures following climate change allows predatory groups like ants to exploit higher elevations, top-down control in high elevation habitats could increase, resulting in re-wiring of these ecologically sensitive communities. At the same time, top-down control at lower elevations may be at risk if critical thermal maxima for natural enemies are exceeded.
英文关键词	Bottom-up; Climate change; Community ecology; Food web; Insect; Sentinel prey; Top-down; Trophic interactions
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:001234573100002
来源期刊	TROPICAL ECOLOGY
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/308387
作者单位	University of Hong Kong; Chinese Academy of Sciences; Xishuangbanna Tropical Botanical Garden, CAS
推荐引用方式 GB/T 7714	Barlow, B. E. L.,Nakamura, A.,Ashton, L. A.. Predation, but not herbivory, declines with elevation in a tropical rainforest[J],2024.
APA	Barlow, B. E. L.,Nakamura, A.,&Ashton, L. A..(2024).Predation, but not herbivory, declines with elevation in a tropical rainforest.TROPICAL ECOLOGY.
MLA	Barlow, B. E. L.,et al."Predation, but not herbivory, declines with elevation in a tropical rainforest".TROPICAL ECOLOGY (2024).