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dc.contributor.authorVerrier, James T.
dc.date.accessioned2018-04-12T23:38:44Z
dc.date.available2018-04-12T23:38:44Z
dc.date.issued2017-10
dc.identifier.issn0734-3434
dc.identifier.urihttp://hdl.handle.net/10150/627274
dc.description.abstractA large population of the fully mycoheterotrophic orchid, Corallorhiza striata var. vreelandii, was monitored for nine years, 2009—2017, in the Santa Catalina Mountains of southeastern Arizona. High elevation slopes were chosen for an unusually high density of plants. Orchid stems were counted annually, and the number of flowering stems steadily decreased by 78% during the first seven years (2009–2015) in drought conditions. Following a partial return to average rainfall on the seventh through ninth years, the number of stems dramatically rebounded on the eighth and ninth years. Overall the total number of flowering stems decreased by 35% during the study. Precipitation from the previous winter and summer strongly correlated with the number of flowering stems observed. Years of extreme drought, with less than half of annual averages, resulted in a decline of flowering stems for two consecutive years, even when the following year had average rainfall. Two years of near average rainfall resulted in an increase on the second year. Orchid numbers were observed to fluctuate as its endophyte was dynamically affected by changes in annual precipitation. This study highlights the need for research on the impact of drought to ectomycorrhizal fungi and affiliated plant species.en_US
dc.language.isoen_USen_US
dc.publisherUniversity of Arizona (Tucson, AZ)en_US
dc.rightsCopyright © Arizona Board of Regents. The University of Arizona.
dc.sourceDesert Plants Editorial Staff.
dc.titleA Mycoheterotrophic Orchid, Tomentelloid Fungi, and Drought in an Arizona Sky Islanden_US
dc.typeArticleen_US
dc.contributor.departmentUniv Arizona, Herbariumen_US
dc.identifier.journalDesert Plantsen_US
dc.description.collectioninformationDesert Plants is published by The University of Arizona for the Boyce Thompson Southwestern Arboretum. For more information about this unique botanical journal, please email the College of Agriculture and Life Sciences Publications Office at pubs@cals.arizona.edu.
refterms.dateFOA2018-04-12T23:38:45Z


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