A model for managing an endangered species in Sandhills rangeland

摘要：

Blowout penstemon ( Penstemon haydenii S.Wats.) is an endangered perennial plant species native to the Sandhills region of Nebraska, USA.Populations of blowout penstemon have reached adequate numbers to consider reclassifying its status to threaten as outlined in the Recovery Plan ( Fritz et al., 1992).Its habitat is disturbed areas of blowing sand in Nebraska rangeland.The survival of blowout penstemon depends on its ability to prosper in current conditions and on our ability to manage for minimum viable population levels.The impact of cattle grazing on this plant will be a key factor in effectively managing its populations.These impacts will be added to a Lefkovitch stage‐structured model in later studies to determine its potential for self‐sufficiency.

关键词： blowout penstemon endangered species rangeland

作者: K.Kottas J.Stubbendieck

作者单位: Department of Agronomy and Horticulture,University of Nebraska,P.O.Box 830915,Lincoln,NE 68583-0915 USA

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）