A test of the key resource hypothesis in the Richtersveld,South Africa

摘要：

Introduction The key resource model predicts that herbivore numbers in seasonally-variable grazing systems are determined by access to a critical subset of forage resources,and that herbivore population dynamics are essentially uncoupled from resources accessible during the growing season (Illius & OConnor 2000).This contrasts with the view that nonequilibrial dynamics are ubiquitous in variable environments,with weak or no coupling between herbivore and resource dynamics (Ellis & Swift 1988).

关键词： key resource model herbivory density‐dependence Succulent Karoo biome

作者: Gareth Hempson Andrew Illius Howard Hendricks Susanne Vetter

作者单位: School of Biological Sciences,University of Edinburgh,The Kings Buildings,West Mains Road,Edinburgh South African National Parks,P.O.Box 787,Pretoria 0001,South Africa Department of Botany,Rhodes University,Grahamstown 6140,South Africa

会议类型: 国际会议

会议名称: 2008世界草地与草原大会

会议地点: 呼和浩特

会议语种:英文

在线出版日期: 2008-06-29（万方平台首次上网日期，不代表论文的发表时间）