Arid
DOI10.1016/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
Corresponding AuthorVarela, O (corresponding author), Univ Nacl Chilecito, Inst Ambientes Montana & Reg Aridas, 9 Julio 22,CP F536OCKB, La Rioja, Argentina.
JournalJOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
Year Published2021
Volume191
Abstract in EnglishWoody 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.
Keyword in EnglishFacilitation Nurse effect Community dynamics Diversity Seed density Monte desert
SubtypeArticle
Language英语
Indexed BySCI-E
WOS IDWOS:000660573200005
WOS KeywordPLANT DIVERSITY ; MONTE DESERT ; SOIL ; DYNAMICS ; PATTERNS ; VEGETATION ; GRASSLAND ; SIZE ; CACTACEAE ; ARGENTINA
WOS SubjectEcology ; Environmental Sciences
WOS Research AreaEnvironmental Sciences & Ecology
Document Type期刊论文
Identifierhttp://119.78.100.177/qdio/handle/2XILL650/350715
Affiliation[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
Recommended Citation
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).
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