Facilitative and competitive interactions between plant species (an example from Nodushan rangelands, Iran)

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• 作者：Mohammad Mousaei Sanjerehei^a ; ^{mmusaei@yahoo.com"" rel=""nofollow} ; Mohammad Jafari^b ; ^{jafary@ut.ac.ir"" rel=""nofollow} ; Asadollah Mataji^a ; ^{amataji@srbiau.ac.ir"" rel=""nofollow} ; Naser Baghestani Meybodi^c ; ^{n_baghestani@yahoo.com"" rel=""nofollow} ; Mohammad Reza Bihamta^d ; ^{mrghanad@ut.ac.ir"" rel=""nofollow}
• 关键词：Association ; Covariation ; Dispersion patterns ; Interactions ; Segregation
• 刊名：Flora - Morphology, Distribution, Functional Ecology of Plants
• 出版年：2011
• 出版时间：July 2011
• 年：2011
• 卷：206
• 期：7
• 页码：631-637
• 全文大小：282 K

文摘

The interactions between species in six sites located in arid and semi arid rangelands of Nodushan were assessed studying association, covariation, segregation and dispersion patterns of plants. The results indicated that facilitation and competition between species were mainly affected by the life form of the species, environmental conditions and the species involved. The dominant chamaephytic shrub species (in particular Artemisia sieberi) ameliorate microenvironmental conditions and facilitate the establishment and survival of hemicryptophytic species (in particular the caespitose grass Stipa barbata). Establishment of different shrub species seems to depend mainly on soil type. Once established, they mostly are in competition with each other for limited resources on the basis of their similar life forms.