逆向詹森-康奈尔效应是否会降低物种多样性？

Do Reverse Janzen-Connell Effects Reduce Species Diversity?

机构信息

Biology Centre of the Czech Academy of Sciences, Institute of Entomology, Branisovska 31, 370 05 Ceske Budejovice, Czech Republic; Faculty of Science, University of South Bohemia, Branisovska 31a, 370 05 Ceske Budejovice, Czech Republic.

出版信息

Trends Ecol Evol. 2021 May;36(5):387-390. doi: 10.1016/j.tree.2021.02.002. Epub 2021 Feb 27.

DOI:10.1016/j.tree.2021.02.002

PMID:33653581

Abstract

Host-specific natural enemies limit the abundance of common species. This can increase host community diversity, since no single species dominates, and is known as the 'Janzen-Connell effect.' Evidence is now accumulating that host-specific mutualists can increase abundances of particular host species, hence reducing community diversity, comprising a 'reverse Janzen-Connell effect.'

摘要

宿主特异性的天敌限制了常见物种的丰度。这可以增加宿主群落的多样性，因为没有一种单一的物种占主导地位，这被称为“詹森-康奈尔效应”。现在有越来越多的证据表明，宿主特异性的互惠共生体可以增加特定宿主物种的丰度，从而降低群落多样性，构成了“反向詹森-康奈尔效应”。