干旱区生态环境知识资源中心(Arid): Diversity and density of the desert seed bank: Interplays between cacti and nurse shrub species

Arid

DOI	10.1016/j.jaridenv.2021.104536
	Diversity and density of the desert seed bank: Interplays between cacti and nurse shrub species
	Varela, Omar; Ordano, Mariano; Toledo, Gimena; Lizardo, Guillermo; Rotger, Sofia; Montero, Anyelen; Claudia Cisneros, Maria
通讯作者	Varela, O (corresponding author), Univ Nacl Chilecito, Inst Ambientes Montana & Reg Aridas, 9 Julio 22,CP F536OCKB, La Rioja, Argentina.
来源期刊	JOURNAL OF ARID ENVIRONMENTS
ISSN	0140-1963
EISSN	1095-922X
出版年	2021
卷号	191
英文摘要	Woody plants can modify microclimate, nutrients, and seed availability in the soil. We studied the influence of two shrub species on species diversity, and seed density in the northern Monte desert soils. We hypothesized that the presence of shrubs affects species richness and seed density. We predicted a higher richness and seed density under shrubs than open spaces between shrubs, and differences between shrubs species (Bulnesia retama and Zuccagnia punctata) influenced by variations in their attributes (crown and nutrients supply to the soil). We obtained seeds and seedlings from 20 soil samples from shrub species and open spaces. The seed bank was composed of 21 species and was dominated by perennial species (62%), mainly Cactaceae. The species richness and density were significantly higher under shrubs than open spaces, without significant differences between shrub species. The variations found among sites, samples, and years is consistent with the spatial heterogeneity of seed banks in deserts. Our study suggests a combination of the spatial heterogeneity hypothesis and the life-form hypothesis would explain the plant diversity dynamics in deserts because, for the maintenance of soil seed bank diversity, shrubs function as nurse islands among open spaces, and perennial cacti dominate the soil seed bank.
英文关键词	Facilitation Nurse effect Community dynamics Diversity Seed density Monte desert
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000660573200005
WOS关键词	PLANT DIVERSITY ; MONTE DESERT ; SOIL ; DYNAMICS ; PATTERNS ; VEGETATION ; GRASSLAND ; SIZE ; CACTACEAE ; ARGENTINA
WOS类目	Ecology ; Environmental Sciences
WOS研究方向	Environmental Sciences & Ecology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/350715
作者单位	[Varela, Omar] Univ Nacl Chilecito, Inst Ambientes Montana & Reg Aridas, 9 Julio 22,CP F536OCKB, La Rioja, Argentina; [Varela, Omar; Ordano, Mariano] Fdn Miguel Lillo, Miguel Lillo 251,CP T4000JFE, San Miguel De Tucuman, Argentina; [Ordano, Mariano] Univ Nacl Tucuman, Inst Ecol Reg, CC 34,CP 4107, San Miguel De Tucuman, Argentina; [Ordano, Mariano] Consejo Nacl Invest Cient & Tecn IER UNT CONICET, CC 34,CP 4107, San Miguel De Tucuman, Argentina; [Toledo, Gimena; Lizardo, Guillermo; Rotger, Sofia; Montero, Anyelen; Claudia Cisneros, Maria] Univ Nacl Tucuman, Fac Ciencias Nat, Miguel Lillo 201,CP T4000JFE, San Miguel De Tucuman, Argentina; [Toledo, Gimena; Lizardo, Guillermo; Rotger, Sofia; Montero, Anyelen; Claudia Cisneros, Maria] Univ Nacl Tucuman, Inst Miguel Lillo, Miguel Lillo 201,CP T4000JFE, San Miguel De Tucuman, Argentina
推荐引用方式 GB/T 7714	Varela, Omar,Ordano, Mariano,Toledo, Gimena,et al. Diversity and density of the desert seed bank: Interplays between cacti and nurse shrub species[J],2021,191.
APA	Varela, Omar.,Ordano, Mariano.,Toledo, Gimena.,Lizardo, Guillermo.,Rotger, Sofia.,...&Claudia Cisneros, Maria.(2021).Diversity and density of the desert seed bank: Interplays between cacti and nurse shrub species.JOURNAL OF ARID ENVIRONMENTS,191.
MLA	Varela, Omar,et al."Diversity and density of the desert seed bank: Interplays between cacti and nurse shrub species".JOURNAL OF ARID ENVIRONMENTS 191(2021).