Tree invasion in secondary grasslands diminishes herbaceous biomass and diversity: A study of mechanisms behind the process

Questions: How is plant biomass, composition and diversity in secondary grasslands affected by tree invasion? How do light conditions generated by invasive trees and soil legacy affect grassland's structure and functioning? Which mechanism is more important? Location: Inland Pampa, Buenos Aires...

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Detalles Bibliográficos
Otros Autores: Ferraina, Antonella, Molina, Cecilia Denisse, Mazía, Cristina Noemí, Piñeiro, Gervasio, Miranda, María Isabel, Chaneton, Enrique José
Formato: Artículo
Lenguaje:Inglés
Materias:
C3 GRASSES
C4 GRASSES
HERBACEOUS BIOMASS
LIGHT COMPETITION
PLANT FUNCTIONAL TYPES
SECONDARY GRASSLANDS
SOIL LEGACY
WOODY - PLANT INVASION
Acceso en línea:http://ri.agro.uba.ar/files/intranet/articulo/2021ferraina.pdf
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LINK AL EDITOR
Aporte de:Registro referencial: Solicitar el recurso aquí
Biblioteca Central (FAUBA) de Universidad de Buenos Aires
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245 0 0 |a Tree invasion in secondary grasslands diminishes herbaceous biomass and diversity: A study of mechanisms behind the process 
520 |a Questions: How is plant biomass, composition and diversity in secondary grasslands affected by tree invasion? How do light conditions generated by invasive trees and soil legacy affect grassland's structure and functioning? Which mechanism is more important? Location: Inland Pampa, Buenos Aires, Argentina. Methods: We established a long-term manipulative reciprocal transplant experiment by transplanting soil monoliths coming from two origins: grasslands (G) and invaded woody patches (W) into three different habitats: open grasslands (OG), woody patches (WP), and artificially shaded grasslands (SG). Results: Seven years after the beginning of the experiment, litter, above- and belowground herbaceous biomass decreased from OG to WP habitats, with SG habitats showing intermediate values. However, differences between OG and WP habitats disappeared when tree (coarse) roots, and tree litter biomass were considered. No significant differences between the origin of the soil monoliths (G or W) were detected (p mayor a 0.10), except for herbaceous roots biomass that, contrary to expectations, was higher in all habitats when the transplanted soil monoliths came from a W origin. Additionally, biomass of C3 grasses was higher in WP habitats and biomass of C4 grasses was higher in OG habitats, while biomass of forbs had the highest biomass in SG habitats. The inverse Simpson's index decreased from OG (2.08), through SG (1.73) to WP habitats (1.14), suggesting higher dominance in WP. Conclusions: Our study helps to glimpse the main mechanism driving community changes after tree invasions in temperate grassland communities. We demonstrated that light reduction beneath the tree canopies has a more important role than soil legacy in determining structure and functioning of grasslands, even though invasion of Gleditsia triacanthos also affected soil properties such as water content and organic carbon. 
650 |2 Agrovoc  |9 26 
653 |a C3 GRASSES 
653 |a C4 GRASSES 
653 |a HERBACEOUS BIOMASS 
653 |a LIGHT COMPETITION 
653 |a PLANT FUNCTIONAL TYPES 
653 |a SECONDARY GRASSLANDS 
653 |a SOIL LEGACY 
653 |a WOODY - PLANT INVASION 
700 1 |9 37624  |a Ferraina, Antonella  |u Universidad de Buenos Aires. Buenos Aires, Argentina.  |u CONICET. Buenos Aires, Argentina.  |u Instituto Nacional de Tecnología Agropecuaria (INTA). Centro de Investigación de Recursos Naturales (CIRN). Instituto de Clima y Agua. Castelar - Hurlingham, Buenos Aires, Argentina. 
700 1 |a Molina, Cecilia Denisse  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 37792 
700 1 |a Mazía, Cristina Noemí  |u Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Buenos Aires, Argentina.  |9 7392 
700 1 |a Piñeiro, Gervasio  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 22554 
700 1 |a Miranda, María Isabel  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 34056 
700 1 |a Chaneton, Enrique José  |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |u CONICET – Universidad de Buenos Aires. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina.  |9 6467 
773 0 |t Journal of vegetation science  |w (AR-BaUFA)SECS001153  |g Vol.32, no.5 (2021), Art. e13074, grafs. 
856 |f 2021ferraina  |i En reservorio  |q application/pdf  |u http://ri.agro.uba.ar/files/intranet/articulo/2021ferraina.pdf  |x ARTI202306 
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856 |u https://www.wiley.com/  |z LINK AL EDITOR 
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