Estructura de las comunidades herbáceas en áreas con plantaciones forestales

Silveira, David; Cadenazzi, Mónica; Zanoniani, Ramiro; Boggiano, P.

doi:10.31285/agro.22.1.1

Cited by 4 publications

(4 citation statements)

References 13 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Also, species richness was lower in the region under the canopy in both Brunisol situations, while no differences were detected in the Solonetz. Silveira et al (2018) found that the highest values in the number of families, genera, and plant species were associated with more luminous environments and that the vegetation developed in more illuminated environments presented higher values of richness and diversity.The C3 grass species which had highest soil cover under the tree canopy (total shade) included Bromus catharticus Vahl, Lolium multi orum, Stipa hialina, and S. setigera (Table 5). The C4 grass species wich had lowest soil cover under the canopy, included Bouteloua megapotamica (Spreng.)…”

Section: Resultsmentioning

confidence: 90%

“…Although some studies have studied silvopastoral systems in Uruguay (Bussoni et al 2019;Bernardi et al 2016;Fedrigo et al 2018a;Silveira et al 2018;2022;2023), there is limited information on the systematic effect of trees on the species and functional composition of native grasslands. Thus, this research aimed i) to detect gradients in the botanical composition of native grasslands associated with the effect of the shade by existent trees of the natural forest in Uruguay, and ii) to characterize the species of the native grasslands by their behavior under different projections of light and shade.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Trees increase the frequency of cool-season grasses in silvopastoral systems on temperate native grasslands of Uruguay

Pizarro,

Zarza,

Boggiano

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

Silvopastoral systems may provide important production and environmental benefits. The loss of cool-season (C3) grasses from temperate grazed native grasslands is associated with selective grazing and excessive solar radiation that limits their survival. Silvopastoral systems integrate trees with grasslands that provide shade to both cattle and herbaceous plants, potentially favoring C3 species. There is limited information on the effect of trees on the species and functional composition of native grasslands in the Campos biome in South America. The objective of this study was to detect gradients in the botanical composition of grasslands associated with trees under three conditions: Prosopis on Solonetz, Acacia on Brunisols, and Eucalyptus on Brunisols. Frequency and soil cover of the herbaceous species under trees in each situation was systematically recorded in transects on the four cardinal directions. In all situations, there were differences in pasture composition in the different shade regions. Under the canopy, the herbaceous layer was enriched with cool-season grasses such as Bromus catharticus Vahl, Lolium multiflorum Lam., Stipa hyalina (Nees) Barkworth, and S. setigera J.Presl. At greater distances from trees, cover of warm-season (C4) grasses increased, such as Axonopus affinis Chase and Paspalum notatum Flüggé. The gradients detected allow us to conclude that trees in silvopastoral systems can increase the abundance of cool-season species and potentially improve the forage nutritive value of the native pasture.

show abstract

Section: Resultsmentioning

confidence: 90%

Section: Introductionmentioning

confidence: 99%

Trees increase the frequency of cool-season grasses in silvopastoral systems on temperate native grasslands of Uruguay

Pizarro,

Zarza,

Boggiano

et al. 2023

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…En cada cuadro se determinó en porcentaje la cobertura vegetal (CV), mantillo + heces (M+H), restos secos (RS) y suelo descubierto (SD). La cobertura vegetal (CV) correspondió a la suma de las coberturas relativas de cada una de las especies (Braun, 1950;Silveira et al, 2018). Se realizó la clasificación de las especies relevadas en siete TFP: gramíneas perennes invernales (GPI), gramíneas perennes estivales (GPE), gramíneas anuales invernales (GAI), leguminosas (Leg), malezas de campo sucio (MCS, grupo integrado por especies subarbustivas y espinosas), Ciperáceas, Juncáceas y Liliáceas (Cyp -Jun -Lil) y especies de hierbas menores (HM).…”

Section: Variables Evaluadasunclassified

“…La intensidad de luz incidente, la calidad de la luz, el balance de radiación y condiciones hídricas sobre el estrato herbáceo puede modificar la composición botánica, la relación C 4 /C 3 (Pillar et al, 2002;Carvalho et al, 2002;Silveira et al, 2018;2022).…”

Section: Introductionunclassified

El ambiente lumínico y su influencia sobre tipos funcionales de plantas y producción en pastizales naturales

Silveira¹,

Favre²,

Cadenazzi³

et al. 2023

Agro sur

View full text Add to dashboard Cite

Es importante estudiar la adaptación de los pastizales naturales a diferentes niveles de sombra, ya que los sistemas silvopastoriles brindan muchos servicios ecosistémicos y beneficios de producción. Con el objetivo de analizar el efecto de la sombra artificial sobre la producción, distribución estacional de forraje de pastizales y composición botánica a través de grupos funcionales se condujo un experimento durante tres años (desde marzo del 2019 hasta abril del 2022) en un pastizal natural de la zona noreste del Uruguay. Se utilizó un diseño experimental de bloques completos con cuatro repeticiones. Los tratamientos fueron: campo natural (CN) a pleno sol, CN con 35% de intercepción de la radiación solar (IRS), CN con 50% IRS, CN con 65% IRS y CN con 80% IRS. Se evaluó los tipos funcionales de plantas a través de años y estaciones, la producción de biomasa estacional y total acumulada. La composición en verano y otoño tendió a homogeneizarse con los años asociándose a gramíneas perennes estivales, independiente del nivel de intercepción de la radiación solar. En invierno y primavera la cobertura evolucionó hacia una mayor asociación con gramíneas perennes invernales, gramíneas anuales invernales y Cyperáceas+Juncáceas+Liliáceas en los niveles de mayor sombramiento. El incremento de los niveles de intercepción de la radiación solar aumentó la producción del campo natural. El efecto de la sombra a través del tiempo determinó respuestas estacionales diferentes en la producción de biomasa y composición de tipos funcionales de plantas.

show abstract

Botanical composition gradients in silvopastoral systems on temperate native grasslands of Uruguay

Pizarro,

Zarza,

Boggiano

et al. 2024

Agroforest Syst

View full text Add to dashboard Cite

Silvopastoral systems may provide important production and environmental benefits. The loss of cool-season (C3) grasses from temperate grazed native grasslands is associated with selective grazing and excessive solar radiation that limit their survival. Silvopastoral systems integrate trees with grasslands that provide shade to both cattle and herbaceous plants, potentially favoring C3 species. There is limited information about the effect of trees on the species and functional composition of native grasslands in the Campos biome in South America. The objective of this study was to detect gradients in the botanical composition of grasslands as affected by changes in the shade associated with distance to the trees and cardinal orientation in three situations defined by the combination of soil and tree species (Prosopis on Solonetz, Acacia on Brunisols, and Eucalyptus on Brunisols). Soil cover of the herbaceous species under trees was recorded in double transects located in the four cardinal directions. In all situations there were changes in pasture composition in the different shaded regions (total shade, partial shade, or full sun). Under the canopy, there was an increase of cool-season grasses such as Bromus catharticus Vahl, Lolium multiflorum Lam., Stipa hyalina (Nees) Barkworth, and S. setigera J.Presl. At greater distances from trees, cover of warm-season grasses, such as Axonopus affinis Chase and Paspalum notatum Flueggé increased. These gradients suggest that trees in silvopastoral systems can increase the abundance of cool-season species and potentially improve the forage nutritive value of the native pasture.

show abstract

Estructura de las comunidades herbáceas en áreas con plantaciones forestales

Cited by 4 publications

References 13 publications

Trees increase the frequency of cool-season grasses in silvopastoral systems on temperate native grasslands of Uruguay

Trees increase the frequency of cool-season grasses in silvopastoral systems on temperate native grasslands of Uruguay

El ambiente lumínico y su influencia sobre tipos funcionales de plantas y producción en pastizales naturales

Botanical composition gradients in silvopastoral systems on temperate native grasslands of Uruguay

Contact Info

Product

Resources

About