Pedro Arthur de Albuquerque NunesCooperativa Central Gaúcha Ltda.
Pedro Arthur de Albuquerque Nunes
PhD
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39
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355
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Introduction
Additional affiliations
October 2018 - April 2019
April 2016 - present
February 2015 - May 2015
Publications
Publications (39)
The Rio de la Plata region (Argentina, Uruguay, and southern Brazil) is currently characterized by a mosaic of intensively managed croplands and remaining areas of livestock production on native grasslands. The production of crops and animals in this scenario is usually spatially segregated as a result of mindset and structural constraints develope...
Characterization of the diet composition of horses in a native grassland of the Pampa Biome (i.e., Campos). The evaluator observed each animal for four hours in the morning (beginning at dawn) and four hours in the afternoon (until dusk) representing the grazing journey, with intervals of 15 to 20 days, totaling 374 hours. A total of 2,451,32 bites...
Closely integrated crop and livestock production systems used to be the rule in agriculture before the industrial revolution. However, agricultural landscapes have undergone a massive intensification process in recent decades. This trajectory has led to uniform landscapes of specialized cropping systems or consolidated zones of intensive livestock...
We evaluated Italian ryegrass (Lolium multiflorum Lam.) establishment in a factorial of grazing intensity (intense, moderate, moderate‐light, light, and no grazing, with target average sward heights of 10, 20, 30, and 40 cm in the grazed plots) and additional seeding (self‐seeding with or without additional seeding) in an integrated soybean‐beef ca...
The Rio de la Plata region comprises central Argentina, Uruguay, and southern Brazil. Modern agriculture developed around 1900 with recent decades being characterized by the advance of cropping areas over native grasslands. Highly specialized agriculture has decoupled crop and livestock production but has succeeded in intensifying yields. However,...
We tested the hypothesis that improving sward structure through adjustments in forage allowance results in greater forage intake and live weight (LW) gains by beef cattle and lower CH4 emissions per unit LW gain and unit area in a native grassland ecosystem of the Pampa biome. The experiment was carried out during 2012 and 2013 in southern Brazil....
Climate models project greater weather variability over the coming decades. High yielding systems that can maintain stable crop yields under variable environmental scenarios are critical to enhance food security. However, the effect of adding a trophic level (i.e. herbivores) on the long-term stability of agricultural systems is not well understood...
The authors would like to make the following correction to the published paper [...]
Cattle dung distribution in pastoral ecosystems is uneven and affects nutrient availability to plants. Thus, identifying its spatiotemporal patterns is crucial to understanding the mechanisms underlying the system functioning. We aimed to characterize the spatiotemporal distribution of dung patches in mixed black oat (Avena strigosa Schreb.) and It...
Animal grazing in integrated crop-livestock systems (ICLS) results in continuous nutrient release to forage plants and crops in succession. This study aimed to assess sheep dung composition and decomposition rates under distinct grazing intensities and at different development stages of Italian ryegrass pasture (Lolium multiflorum Lam.), and to eva...
Managing for resilience in agriculture will be required to overcome future challenges such as growing food demand, climatic uncertainty, scarce raw materials and economic instability. Identifying resilience-enhancing practices is therefore fundamental for developing sustainable agroecosystems. We aimed to assess the resilience of two agricultural s...
Capítulo publicado nos Anais do V Simpapasto
V Simpósio de Produção Animal a Pasto
21 e 22 de Novembro de 2019
Maringá - Paraná
Métodos de pastoreio: uma perspectiva alternativa a décadas de debate e pouco avanço conceitual
‘Rotatinuous’ stocking (RS) is an innovative sward management concept based on the ingestive behaviour of grazing animals. It considers that grazing time is the major limitation to allow animals to take the best from the vegetation on offer and limit supplementation to cover the daily requirements. It hypothesizes that there is an ideal sward struc...
We would like to draw the reader's attention to an error in the following article:
Nunes, P. A. D. A., Bredemeier, C., Bremm, C., Caetano, L. A. M., de Almeida, G. M., de Souza Filho, W., ... Carvalho, P. C. F. (2019). Grazing in‐ tensity determines pasture spatial heterogeneity and productivity in an integrated crop‐livestock system. Grassland Sci...
Integrated Crop-Livestock Systems (ICLS) is a modern concept of agriculture due to their capacity to intensify food production with the simultaneous promotion of environmental services, matching global demand for sustainable intensification. Sound cover crop grazing is pivotal to ICLS performance. We present a change in the concept of pasture manag...
Commercial-scale integrated crop-livestock systems intensify land use by combining complementary agricultural enterprises and leveraging synergistic ecosystem services to achieve both productive and environmental outcomes. Although widely implemented in southern Brazil as an annual beef/soybean rotation, tradeoffs such as competing soil water use b...
We evaluated the effect of different grazing intensities by steers on animal performance, herbage intakeand CH4 emissions in the stocking period of a soybean-beef cattle integrated system in southern Brazil.Treatments consisted of different grazing intensities, defined by target sward heights (10, 20, 30 and 40 cm) of mixed black-oat (Avena strigos...
Spatial heterogeneity is a property of natural ecosystems. Integrated crop‐livestock systems (ICLS) aim to mimic natural ecosystem functions as pillars of sustainable intensification, and grazing is a process that potentially affects spatial heterogeneity. Then, we investigated the effect of different grazing intensities, defined according to a ran...
Areas with a history of cupric fungicide application accumulate copper (Cu), which may be toxic to plants and might result in food chain contamination. This work aimed to study the effects of Cu contaminated vineyard soils (2.2, 5, 36.3, 67, 95.7, 270.5 and 320.70 mg Cu kg-1 soil) on three potato genotypes and its potential risk to human health, du...
This is a correction to: Journal of Animal Science, Volume 96, Issue 8, 28 July 2018, Pages 3513–3525, https://doi.org/10.1093/jas/sky085.
The sentence “According to some estimates, one young grazing animal on each of these unused hectares of cover crop could yield as much as 700 million tonnes of equivalent live-weight – a considerable contributi...
Erratum to: “Animal production and soil characteristics from integrated crop-livestock systems: toward sustainable intensification” by Paulo César de Faccio Carvalho et al. Journal of Animal Science 2018; doi: 10.1093/jas/sky085.
The author listed as “William de Souzsa Filho,” should be listed as “William de Souza Filho”.
Sustainable intensification of land-use practices has never been more important to ensure food security for a growing world population. When combined under thoughtful management, cover cropping and crop-livestock integration under no-till systems can benefit from unexpected synergies due to their unique features of plant-animal diversification and...
Sustainable intensification of
land-use practices has never been more important
to ensure food security for a growing world
population. When combined under thoughtful
management, cover cropping and crop-livestock
integration under no-till systems can benefit from
unexpected synergies due to their unique features
of plant-animal diversification and...
Os ganhos na eficiência da produção agrícola e pecuária estão no centro de uma série de questões ambien-tais contemporâneas. Dentre os processos em debate estão a expansão das áreas de uso agrícola, que contribui para a conversão de ecossistemas sensíveis e ameaçados de extinção (Tilman et al., 2001; Oliveira et al., 2017), para as emissões de gase...
A complexidade derivada das interações entre os compartimentos solo-planta-animal-atmosfera aumenta a probabilidade de expressão de propriedades emergentes nos Sistemas Integrados de Produção Agropecuária sob manejo conservacionista do solo. Nestes sistemas, abordagens reducionistas e/ou compartimentalizadas não capturam por completo a dinâmica do...
Specialization and biological simplification of agriculture has led to important productivity gains in the last decades. However, the long-term sustainability of these highly specialized systems has been put in question. The aim of this experiment is to evaluate the long-term implications of no-till crop-livestock integration for productivity and s...
This paper aims to discuss the impact of the introduction of pastures and grazing animals in agricultural systems. For the purposes of this manuscript, we focus on within-farm integrated crop-livestock systems (ICLS), typical of Southern Brazil. These ICLS are designed to create and enhance the synergisms and emergent properties have arisen from ag...
The presence of grazing animals in succession with grain crops has long been considered harmful to no-till croplands. However, recent research has shown that well managed grazing does not jeopardize grain productivity in Integrated Crop-Livestock Systems (ICLS). The aim of this study was to understand how different grazing intensities define crop p...
Los SIPA exploran sinergismos entre los componentes suelo-planta-animal que les permiten incrementar su capacidad de producir alimentos de manera sustentable. Estos sistemas contribuyen con más del 50% de los alimentos en el mundo. No obstante, aún existe resistencia para su adopción a escalas mayores debido al inadecuado manejo de la intensidad de...
The determination of biomass flows can assist on improving pasture fertilization techniques, contributing to identify the best management methods and, in relation the use of fertilizers. Nitrogen deficiency in pastures can reduce forage production. On the other hand, there is an environmental concern on nitrogen (N) losses when this nutrient is use...
Spatial heterogeneity induced by grazing has been recognized as a crucial component to grasslands sustainable management, since the higher their complexity, the closer their similarity to natural ecosystems functioning. However, most of the interventions made by humans tend to homogenize the environments, including animal management. In order to us...
The vegetation spatial heterogeneity is exploited positively by grazing animals, which have the ability to eat diets with higher quality than the average of the pasture, consequently obtaining different levels of animal production. Domestic herbivores make decisions about where to graze, which combinations of foods to eat and in what sequence they...
Ruminant livestock production is an expanding sector in Brazil and accounts for more than 70% of the national methane (CH4) emission. As most of the livestock is raised on pastures, grazing management is the pivotal factor affecting animal production and CH4 emission efficiency. However, actual mitigation potential of grazing management on enteric...
The ecotoxicological effects of copper (Cu) are of global concern due to the intensive and long-term application of Cu-based fungicides, which may cause Cu to accumulate in the soil. Relative to the effects of other metals, comparatively little is known about the accumulation and translocation of Cu and its effects on other mineral nutrients in pla...
Projects
Projects (2)
This project aims to test the hypothesis that adequate grazing management and the supply of pasture structures that maximize plant and animal productivities have the potential to mitigate CH4 emissions. For this purpose, we evaluated the effect of different grazing intensities by steers on animal performance, herbage intake and CH4 emissions in the stocking period of a soybean-beef cattle integrated system in southern Brazil.
This project aims to (i) determine the sward height that maximizes the herbage intake rate (optimal sward structure) by cows grazing Palisade grass (Urochloa brizantha cv. Marandu); and (ii) access bite types diversity, herbage intake and grazing dynamics when sward structure diverts from this optimum. For this purpose, both pastures and animals are monitored at high spatio-temporal resolution. Pasture is assessed using on-field methods spatialized by RTK-based GPS and 3D mapping of the vegetation by UAV imagery. Animals are monitored using a combination of tools and methods such as the IGER Behaviour Recorder (Rutter et al., 1997), bioacoustics (da Trindade et al., 2012), the continuous bite monitoring (Bonnet et al., 2015), double weighing, GPS and inertial measurement units of smartphones (Adriamandroso et al., 2017).
