干旱区生态环境知识资源中心(Arid): Predation and Biophysical Context Control Long-Term Carcass Nutrient Inputs in an Andean Ecosystem

Arid

DOI	10.1007/s10021-023-00893-7
	Predation and Biophysical Context Control Long-Term Carcass Nutrient Inputs in an Andean Ecosystem
	Monk, Julia D.; Donadio, Emiliano; Smith, Justine A.; Perrig, Paula L.; Middleton, Arthur D.; Schmitz, Oswald J.
通讯作者	Monk, JD
来源期刊	ECOSYSTEMS
ISSN	1432-9840
EISSN	1435-0629
出版年	2024
卷号	27 期号:2 页码:346-359
英文摘要	Animal carcass decomposition is an often-overlooked component of nutrient cycles. The importance of carcass decomposition for increasing nutrient availability has been demonstrated in several ecosystems, but impacts in arid lands are poorly understood. In a protected high desert landscape in Argentina, puma predation of vicunas is a main driver of carcass distribution. Here, we sampled puma kill sites across three habitats (plains, canyons, and meadows) to evaluate the impacts of vicuna carcass and stomach decomposition on soil and plant nutrients up to 5 years after carcass deposition. Soil beneath both carcasses and stomachs had significantly higher soil nutrient content than adjacent reference sites in arid, nutrient-poor plains and canyons, but not in moist, nutrient-rich meadows. Stomachs had greater effects on soil nutrients than carcasses. However, we did not detect higher plant N concentrations at kill sites. The biogeochemical effects of puma kills persisted for several years and increased over time, indicating that kills do not create ephemeral nutrient pulses, but can have lasting effects on the distribution of soil nutrients. Comparison to broader spatial patterns of predation risk reveals that puma predation of vicunas is more likely in nutrient-rich sites, but carcasses have the greatest effects on soil nutrients in nutrient-poor environments, such that carcasses increase localized heterogeneity by generating nutrient hotspots in less productive environments. Predation and carcass decomposition may thus be important overlooked factors influencing ecosystem functioning in arid environments.
英文关键词	carcasses decomposition predation Puma concolor Vicugna vicugna high Andes biogeochemical hotspots nutrient cycling
类型	Article
语种	英语
开放获取类型	hybrid
收录类别	SCI-E
WOS记录号	WOS:001136719600001
WOS关键词	CARRION DECOMPOSITION ; TROPHIC CASCADES ; SOIL ; NITROGEN ; EXPLOITATION ; HERBIVORES ; STRENGTH ; MODULATE ; FOREST ; PLANTS
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/403474
推荐引用方式 GB/T 7714	Monk, Julia D.,Donadio, Emiliano,Smith, Justine A.,et al. Predation and Biophysical Context Control Long-Term Carcass Nutrient Inputs in an Andean Ecosystem[J],2024,27(2):346-359.
APA	Monk, Julia D.,Donadio, Emiliano,Smith, Justine A.,Perrig, Paula L.,Middleton, Arthur D.,&Schmitz, Oswald J..(2024).Predation and Biophysical Context Control Long-Term Carcass Nutrient Inputs in an Andean Ecosystem.ECOSYSTEMS,27(2),346-359.
MLA	Monk, Julia D.,et al."Predation and Biophysical Context Control Long-Term Carcass Nutrient Inputs in an Andean Ecosystem".ECOSYSTEMS 27.2(2024):346-359.