plant community analysis
environmental impact reporting
MetadataShow full item record
CitationPorter, S. D., & Jorgensen, C. D. (1988). Longevity of harvester ant colonies in southern Idaho. Journal of Range Management, 41(2), 104-107.
PublisherSociety for Range Management
JournalJournal of Range Management
AbstractHarvester ant colonies (Pogonomyrmex owyheei Cole) in southern Idaho were monitored periodically for 9 years. Mortality rates indicate that established colonies live 14-30 years (mean = 17). Mounds were commonly reactivated after the death of an old colony; consequently, some may be utilized for many decades. Clearings with active mounds showed almost no change after 9 years of observations while those without active mounds were rapidly filled by annual herbs and then gradually by perennial shrubs. Harvester ants are clearly a very persistent component of cold desert shrub communities.