Species dispersal and biodiversity in human-dominated metacommunities

JOURNAL OF THEORETICAL BIOLOGY

卷:457

Article

Shanafelt, David W.^1,2,3  Clobert, Jean^3,4  Fenichel, Eli P.⁵  Hochberg, Michael E.^6,7  Kinzig, Ann¹  Loreau, Michel^2,3,4  Marquet, Pablo A.^8,9  Perrings, Charles¹ 

[1] Arizona State Univ, Sch Life Sci, POB 874501, Tempe, AZ 85287 USA

[2] CNRS, Ctr Biodivers Theory & Modelling, Theoret & Expt Ecol Stn, F-09200 Moulis, France

[3] Paul Sabatier Univ, F-09200 Moulis, France

[4] CNRS, Theoret & Expt Ecol Stn, F-09200 Moulis, France

[5] Yale Univ, Yale Sch Forestry & Environm Studies, 195 Prospect St, New Haven, CT 06511 USA

[6] Univ Montpellier 2, CNRS, Inst Sci Evolut, Montpellier, France

[7] Santa Fe Inst, 1399 Hyde Pk Rd, Santa Fe, NM 87501 USA

[8] Pontificia Univ Catolica Chile, Dept Ecol, Casilla 114-D, Santiago, Chile

[9] IEB, Santiago, Chile

关键词: Bioeconomics;    Biodiversity;    Dispersal;    Non-consumptive benefits;    Spatial insurance;   

DOI  :  10.1016/j.jtbi.2018.08.041

来源: Elsevier

【 摘 要 】

The concept of the Anthropocene is based on the idea that human impacts are now the primary drivers of changes in the earth's systems, including ecological systems. In many cases, the behavior that causes ecosystem change is itself triggered by ecological factors. Yet most ecological models still treat human impacts as given, and frequently as constant. This undermines our ability to understand the feedbacks between human behavior and ecosystem change. Focusing on the problem of species dispersal, we evaluate the effect of dispersal on biodiversity in a system subject to predation by humans. People are assumed to obtain benefits from (a) the direct consumption of species (provisioning services), (b) the non consumptive use of species (cultural services), and (c) the buffering effects of the mix of species (regulating services). We find that the effects of dispersal on biodiversity depend jointly on the competitive interactions among species, and on human preferences over species and the services they provide. We find that while biodiversity may be greatest at intermediate levels of dispersal, this depends on structure of preferences across the metacommunity. (C) 2018 Elsevier Ltd. All rights reserved..

【 授权许可】

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