scholarly journals Influence of woody species on aerial growth of perennial grasses in semi-arid rangelands of central Argentina

Phyton ◽  
2014 ◽  
Vol 83 (1) ◽  
pp. 397-405
Author(s):  
Blazquez FR ◽  
DV Pel醗z ◽  
RJ ◽  
rioli ◽  
OR Elia
Keyword(s):  
Woody Species ◽  
Perennial Grasses ◽  
Central Argentina ◽  
Aerial Growth ◽  
Arid Rangelands ◽  
Semi Arid

Influence of Woody Species on Aboveground Biomass Production and Quality of Two Perennial Grasses in Semi-arid Rangelands of Central Argentina

2020 ◽  
Vol 51 (1) ◽  
pp. 90-98
Author(s):  
Blazquez Francisco Rubén ◽  
Daniel Valerio Peláez ◽  
Romina Jessica Andrioli ◽  
Omar Raúl Elia
Keyword(s):  
Biomass Production ◽  
Aboveground Biomass ◽  
Woody Species ◽  
Perennial Grasses ◽  
Central Argentina ◽  
Arid Rangelands ◽  
Semi Arid

Response of grass species to different fire frequencies in semi-arid rangelands of central Argentina

2013 ◽  
Vol 35 (4) ◽  
pp. 385 ◽  
Author(s):  
Daniel V. Peláez ◽  
Romina J. Andrioli ◽  
Omar R. Elia ◽  
Eliana E. Bontti ◽  
María A. Tomas ◽  
...  
Keyword(s):  
Basal Area ◽  
Bare Soil ◽  
Fire Frequency ◽  
Perennial Grasses ◽  
Moderate Intensity ◽  
Grass Species ◽  
Central Argentina ◽  
Controlled Burns ◽  
Arid Rangelands ◽  
Semi Arid

The study was undertaken to quantify the effect of different controlled fire frequencies on foliar cover, density, individual basal area, and mortality of the most common perennial grass species in the semi-arid rangelands of the southern Caldenal in central Argentina over a 20-year period. Cover of bare soil was also assessed. The study comprised three fire treatments: (i) high fire frequency (controlled burns every 3–5 years; HFF); (ii) low fire frequency (controlled burns every 8 years; LFF); and (iii) unburned control (C). Fire treatments, regardless of frequency, induced an increase in foliar cover and density in desirable grasses, no changes in intermediate grasses, and a decrease in undesirable grasses. Individual basal area tended to be higher for desirable grasses and lower for intermediate and undesirable grasses when subject to fire. Most of the species under study exhibited higher mortality rates in the HFF treatment than in the LFF and C treatments. The results of the study suggest that recurrent controlled burns of moderate intensity may favour the herbage production of desirable perennial grasses. This, in turn, assuming appropriate grazing management, may have a beneficial impact on livestock production. Nevertheless, given the effects of fire on the cover of bare soil and mortality of grasses, further research is needed in order to determine the appropriate fire frequency in terms of rangeland sustainability.

scholarly journals Effects of the Management of Extensive Beef Grazing Systems on the Mitigation of Greenhouse Gas Emissions in Semi-arid Rangelands of Central Argentina

2018 ◽  
Author(s):  
María I. Nieto ◽  
Olivia Barrantes ◽  
Liliana Privitello ◽  
Ramón Reiné
Keyword(s):  
Management Practices ◽  
Linear Models ◽  
Ghg Emissions ◽  
Farm Management ◽  
Forage Crops ◽  
Central Argentina ◽  
Livestock Sector ◽  
Arid Rangelands ◽  
On Farm ◽  
Semi Arid

The livestock sector can be a major contributor to the mitigation of greenhouse (GHG) emissions. Within the sector, beef production produces the largest proportion of the livestock sector’s direct emissions. The objective of this study was to assess the on-farm GHG emissions in semi-arid rangelands in Argentina and to identify the relationships between emissions and current farm management practices. A survey recorded detailed information on farm management and characteristics. Assessments of GHG emissions were based on the IPCC Tier 2 protocols [1]. The relationships between farm management and GHG emissions were identified using General Linear Models. Cluster analysis was used to identify groups of farms that differed from others in emissions and farm characteristics. Emissions per product sold were low on farms that had improved livestock care management, rotational grazing, received technical advice, and had high animal and land productivities. Emissions per hectare of farmland were low on farms that had low stocking rates, low number of grazing paddocks, little or no land dedicated to improved pastures and forage crops, and low land productivity. Our results suggest that the implementation of realistic, relatively easy-to-adopt farming management practices has considerable potential for mitigating GHG emissions in semi-arid rangelands of central Argentina.

Twenty-five Years of Fire Research in the Temperate Semi-arid Rangelands of Central Argentina: A Synthesis

2021 ◽  
Vol 52 (1) ◽  
pp. 49-58
Author(s):  
Daniel Valerio Peláez ◽  
Francisco Rubén Blazquez ◽  
Romina Jessica Andrioli
Keyword(s):  
Fire Research ◽  
Central Argentina ◽  
Arid Rangelands ◽  
Semi Arid

scholarly journals Greenhouse Gas Emissions from Beef Grazing Systems in Semi-Arid Rangelands of Central Argentina

2018 ◽  
Vol 10 (11) ◽  
pp. 4228 ◽  
Author(s):  
María Nieto ◽  
Olivia Barrantes ◽  
Liliana Privitello ◽  
Ramón Reiné
Keyword(s):  
Greenhouse Gas ◽  
Management Practices ◽  
Ghg Emissions ◽  
Farm Management ◽  
Forage Crops ◽  
Central Argentina ◽  
Arid Rangelands ◽  
On Farm ◽  
The Relationship ◽  
Semi Arid

The livestock sector can be a major contributor to the mitigation of greenhouse gas (GHG) emissions. Within the sector, beef production produces the largest proportion of the livestock sector’s direct emissions. The objective of this study was to assess the on-farm GHG emissions in semi-arid rangelands in Argentina and to identify the relationship between emissions and current farm management practices. A survey recorded detailed information on farm management and characteristics. Assessments of GHG emissions were based on the Intergovernmental Panel on Climate Change (IPCC) Tier 2 protocols. The relationship between farm management and GHG emissions were identified using general linear models. Cluster analysis was used to identify groups of farms that differed from others in emissions and farm characteristics. Emissions per product sold were low on farms that had improved livestock care management, rotational grazing, received technical advice, and had high animal and land productivities. Emissions per hectare of farmland were low on farms that had low stocking rates, a low number of grazing paddocks, little or no land dedicated to improved pastures and forage crops, and low land productivity. Our results suggest that the implementation of realistic, relatively easy-to-adopt farming management practices has considerable potential for mitigating the GHG emissions in the semi-arid rangelands of central Argentina.

Response of woody species to different fire frequencies in semiarid rangelands of central Argentina

2012 ◽  
Vol 34 (2) ◽  
pp. 191 ◽  
Author(s):  
Daniel V. Peláez ◽  
Romina J. Andrioli ◽  
Omar R. Elia ◽  
Eliana E. Bontti ◽  
María A. Tomas
Keyword(s):  
Woody Species ◽  
Fire Frequency ◽  
Perennial Grasses ◽  
Moderate Intensity ◽  
Similar Response ◽  
Managerial Implication ◽  
Central Argentina ◽  
Canopy Area ◽  
Controlled Burns ◽  
The Individual

The aim of the study was to assess the effect of different controlled fire frequencies on cover, density and mortality of the most common woody species in semiarid rangelands of the Caldenal district of central Argentina over a 20-year period. The study comprised three fire treatments: (1) high fire frequency (controlled burns every 3–4 years; HFF); (2) low fire frequency (controlled burns every 8 years; LFF); and (3) unburned control. Repeated burns of moderate intensity, regardless of frequency, reduced the cover and the individual height and canopy area of the most common woody species. Their density was barely affected and the mortality rates were negligible with woody species producing new sprouts after each burn. The woody species under study had a similar response to the high- and low fire frequency treatments. A controlled burn every 3–4 years, permitted the control of woody species cover, height and canopy area, which in turn may favour the production of desirable perennial grasses. The important managerial implication is that the repeated use of controlled fires of moderate intensities in the autumn, given appropriate grazing management, is likely to be essential to maintain these rangelands.

Chemical composition and in vitro ruminal fermentation of common tree forages in the semi-arid rangelands of Swaziland

2008 ◽  
Vol 142 (1-2) ◽  
pp. 99-110 ◽  
Author(s):  
Solomon Tefera ◽  
V. Mlambo ◽  
B.J. Dlamini ◽  
A.M. Dlamini ◽  
K.D.N. Koralagama ◽  
...  
Keyword(s):  
Chemical Composition ◽  
Ruminal Fermentation ◽  
Arid Rangelands ◽  
Common Tree ◽  
Semi Arid
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