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dc.date.available
2022-07-19T19:13:22Z
dc.identifier.citation
Loydi, Alejandro; (2022): Siembra de especies nativas en Napostá 2015. Consejo Nacional de Investigaciones Científicas y Técnicas. (dataset). http://hdl.handle.net/11336/162589
dc.identifier.uri
http://hdl.handle.net/11336/162589
dc.description.abstract
Land use has changed the original composition of the natural grasslands in the dry pampas of central Argentina, to the detriment of palatable perennial grasses (PPG). Long-term elimination of anthropogenic disturbances has not been enough to effectively recover the PPG, which suggests that availability of seeds and/or habitats may be limiting their recruitment. Therefore, our objectives in a degraded grassland site were to assess: (1) the germinable soil seed bank and (2) changes in botanical composition after addition of PPG seed following canopy disturbance. In autumn 2015, we randomly selected 10-paired plots, measured the aboveground biomass and took soil samples to assess the germinable soil seed bank. Afterwards, we disturbed the resident vegetation in each paired plot and either added PPG seeds or left the plot without any seed addition as a control. We quantified the seedling density of seeded and spontaneous species in the spring of 2015 and 2016, and the aboveground biomass at the end of 2017. Annual grasses and forbs (AGFS) dominated the soil seed bank, while PPG and unpalatable perennial grasses (UPG) occurred at low seed density and richness. Addition of PPG seeds resulted in the successful establishment of one key seeded PPG (Poa ligularis ). In the spring 2017, the aerial biomass of PPG was highest in the seeded plots, where P. ligularis accounted for 94%. Our results showed that PPG were poorly represented in the soil seed bank of the degraded grassland and that disturbance of the resident vegetation combined with PPG seed addition enabled successful recruitment of a key PPG. So, enhancement of the pastoral value of degraded dry pampas grasslands would be possible through disturbance of the resident vegetation and addition of PPG seed.
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.title
Siembra de especies nativas en Napostá 2015
dc.type
dataset
dc.date.updated
2022-07-19T14:11:02Z
dc.description.fil
Fil: Loydi, Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida; Argentina
dc.rights.license
Protección de datos personales (Ley 25.326)
dc.datacite.PublicationYear
2022
dc.datacite.Creator
Loydi, Alejandro
dc.datacite.affiliation
Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Centro de Recursos Naturales Renovables de la Zona Semiárida. Universidad Nacional del Sur. Centro de Recursos Naturales Renovables de la Zona Semiárida
dc.datacite.publisher
Consejo Nacional de Investigaciones Científicas y Técnicas
dc.datacite.subject
Ecología
dc.datacite.subject
Ciencias Biológicas
dc.datacite.subject
CIENCIAS NATURALES Y EXACTAS
dc.datacite.date
01/04/2015-31/12/2020
dc.datacite.DateType
Recolectado
dc.datacite.language
eng
dc.datacite.version
1.0
dc.datacite.description
Siembra de mezcla de especies nativas y monitoreo por 6 años de su densidad, cobertura y banco de semillas.
dc.datacite.DescriptionType
Métodos
dc.datacite.FundingReference
PICT 2014-0865
dc.datacite.FunderName
Ministerio de Ciencia, Tecnología e Innovación Productiva. Agencia Nacional de Promoción Científica y Tecnológica. Fondo para la Investigación Científica y Tecnológica
dc.relationtype.isSourceOf
https://ri.conicet.gov.ar/handle/11336/112336
dc.subject.keyword
Argentina dry Pampas
dc.subject.keyword
Grassland recovery
dc.subject.keyword
Seed addition
dc.subject.keyword
Soil seed bank
dc.datacite.resourceTypeGeneral
dataset
dc.conicet.datoinvestigacionid
1028
dc.datacite.awardTitle
Estructura, importancia, ecología funcional y formación del banco de semillas en pastizales naturales sometidos a disturbios naturales
dc.datacite.geolocation
Napostá: -38,428787, -62,290276
dc.datacite.formatedDate
2015-2020
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