Show simple item record

dc.contributor.authorLei, Simon A.
dc.date.accessioned2020-09-03T11:18:45Z
dc.date.available2020-09-03T11:18:45Z
dc.identifier.urihttps://scholar.oxy.edu/handle/20.500.12711/9578
dc.description.abstractInteractive effects of red brome grass (Bromus rubens) density and time of establishment on the early survival and growth of blackbrush (Coleogyne ramosissima) seedlings were quantitatively investigated. Seeds of Coleogyne and Bromus were collected from Cold Creek of the Spring Mountains in southern Nevada. A series of pot trial experiments were conducted in a controlled environmental glasshouse. In mixed culture pots when Coleogyne seedlings planted four weeks later than Bromus at medium and high density levels, survival of Coleogyne seedlings (experimental populations) was greatly reduced compared to single Coleogyne seedlings that grew alone (control population). Significant interactions were detected between neighboring Bromus density and time of planting for shoot height, root/shoot ratio, leaf length, and shoot water potential of experimental Coleogyne populations. When Bromus density was examined independently, all measured growth parameters of experimental Coleogyne populations were significantly reduced compared to the control population. When time of planting was examined independently, shoot height, root/shoot ratio, shoot biomass, leaf length, and water potential of experimental Coleogyne populations were significantly reduced. Results of this study revealed that some Coleogyne mortalities occurred in the absence of interspecific competition, and that growth among surviving seedlings were significantly reduced under conditions of increased density of neighboring Bromus and early Bromus establishment.
dc.subjectColeogyne ramosissima
dc.subjectBromus rubens
dc.titleInterspecific Competition Between Coleogyne ramosissima Seedlings and Bromus rubens
dc.title.alternativeInterspecific Competition Between Coleogyne ramosissima Seedlings and Bromus rubens
dc.typearticle
dc.abstract.formatonep
dc.source.issuescas/vol105/iss2
dc.source.issue2
dc.identifier.legacyhttps://scholar.oxy.edu/scas/vol105/iss2/3
dc.source.peer_reviewedTRUE
dc.source.statuspublished
dc.source.journaltitleScas: Bulletin of the Southern California Academy of Sciences


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record