气候变化领域集成服务门户(CCPortal): The mechanistic basis for higher-order interactions and non-additivity in competitive communities

CCPortal

DOI	10.1111/ele.13211
	The mechanistic basis for higher-order interactions and non-additivity in competitive communities
	Letten A.D.; Stouffer D.B.
发表日期	2019
ISSN	1461023X
卷号	22 期号:3
英文摘要	Motivated by both analytical tractability and empirical practicality, community ecologists have long treated the species pair as the fundamental unit of study. This notwithstanding, the challenge of understanding more complex systems has repeatedly generated interest in the role of so-called higher-order interactions (HOIs) imposed by species beyond the focal pair. Here we argue that HOIs – defined as non-additive effects of density on per capita growth – are best interpreted as emergent properties of phenomenological models (e.g. Lotka–Volterra competition) rather than as distinct ‘ecological processes’ in their own right. Using simulations of consumer-resource models, we explore the mechanisms and system properties that give rise to HOIs in observational data. We demonstrate that HOIs emerge under all but the most restrictive of assumptions, and that incorporating non-additivity into phenomenological models improves the quantitative and qualitative accuracy of model predictions. Notably, we also observe that HOIs derive primarily from mechanisms and system properties that apply equally to single-species or pairwise systems as they do to more diverse communities. Consequently, there exists a strong mandate for further recognition of non-additive effects in both theoretical and empirical research. © 2019 John Wiley & Sons Ltd/CNRS
英文关键词	Coexistence; higher-order interactions; Lotka–Volterra; mechanistic models; non-additivity; resource competition
语种	英语
scopus关键词	coexistence; community composition; community ecology; ecological modeling; growth; Lotka-Volterra model; biological model; ecosystem; population dynamics; Ecosystem; Models, Biological; Population Dynamics
来源期刊	Ecology Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/121126
作者单位	Centre for Integrative Ecology, University of Canterbury, Christchurch, 8140, New Zealand; Institute of Integrative Biology, Department of Environmental Systems Science, ETH Zürich, Zürich, 8092, Switzerland
推荐引用方式 GB/T 7714	Letten A.D.,Stouffer D.B.. The mechanistic basis for higher-order interactions and non-additivity in competitive communities[J],2019,22(3).
APA	Letten A.D.,&Stouffer D.B..(2019).The mechanistic basis for higher-order interactions and non-additivity in competitive communities.Ecology Letters,22(3).
MLA	Letten A.D.,et al."The mechanistic basis for higher-order interactions and non-additivity in competitive communities".Ecology Letters 22.3(2019).