ArticlePDF Available

Cattle ranching in the Amazon rainforest

Authors:

Abstract

Since the 1960s, the cattle herd of the Amazon Basin has increased from 5 millions to more than 70-80 million heads. Around 15% of the Amazon forest has been replaced and around 80% of the deforested areas have been covered by pastures (approximately 900 000 km2). Cattle expansion occurs in the new agricultural frontier areas of the "Arc of deforestation", from the Eastern Brazilian Amazon (States of Maranhão and Pará), through the Southern Brazilian Amazon (States of Tocantins, Mato Grosso and Rondônia) and the Bolivian rainforests, to the Andean Amazon ecosystems of Bolivia, Peru, Ecuador, Colombia and Venezuela. Based on 1990s data from different agricultural frontiers of the Amazon basin, the authors try to identify the main factors responsible for cattle expansion. Whereas there are some promising and sustainable land use alternatives are emerging in particular regions, adequate solutions to avoid or minimize the negative ecological impact of Amazon basin development still have to be found. INTRODUCTION With 7.5 million km 2 , the Amazon is the largest tropical forest in the world. The Amazon basin covers eight countries: Brazil (67% of the area), Peru and Bolivia (25% together), Colombia, Venezuela, Ecuador, Guyana, Surinam and French Guyana. It is comprises high diversity ecosystems: lowlands along the Eastern Amazon river until its delta, savannas in Colombia and Brazil, respectively located in the basin's North-West and South-East, Andean Amazonian highlands in the West, Guyana plateau in the North and, last but not least, the typical Amazon rainforest, which covers the main area in the center of the basin. Cattle ranching in the Brazilian Amazon started in the 16 th century, at the beginning of the Portuguese colonization, when navigators brought the first animals to satisfy farmers demand for milk and animal draught (Desffontaines 1956). Cattle ranching has then expanded in the Low Amazon River regions, from Santarém to the Marajó Islands, based on extensive farming systems on natural grasslands (Teixeira 1953). At the beginning of the 20 th century, the Brazilian Amazon herd was made of 750 000 cattle and 250 000 buffaloes. In the Andean Amazon, cattle ranching started later, in the 19 th and 20 th centuries, by catholic missions from the Andean Sierras, where cattle ranching had been developed during the Spanish colonization. Although cattle ranching is an old farming system in the Amazon, its expansion has not been as fast as in Brazilian and Andean regions (Medeiros Neto 1970; Olmedo et al. 2001).
Anim. Prod. Aust. 2002 Vol. 24: 253-256
253.
CATTLE RANCHING IN THE AMAZON RAINFOREST
J. B. VEIGA, J.F. TOURRAND, R. POCCARD-CHAPUIS, M.G. PIKETTY
Embrapa-Cirad Cooperation Program, Tv. Enéas Pinheiro s/n, Caixa Postal 48, CEP: 66095-100, Belém-PA,
Brazil
SUMMARY
Since the 1960s, the cattle herd of the Amazon Basin has increased from 5 millions to more than 70-80
million heads. Around 15% of the Amazon forest has been replaced and around 80% of the deforested
areas have been covered by pastures (approximately 900 000 km2). Cattle expansion occurs in the new
agricultural frontier areas of the “Arc of deforestation”, from the Eastern Brazilian Amazon (States of
Maranhão and Pará), through the Southern Brazilian Amazon (States of Tocantins, Mato Grosso and
Rondônia) and the Bolivian rainforests, to the Andean Amazon ecosystems of Bolivia, Peru, Ecuador,
Colombia and Venezuela. Based on 1990s data from different agricultural frontiers of the Amazon
basin, the authors try to identify the main factors responsible for cattle expansion. Whereas there are
some promising and sustainable land use alternatives are emerging in particular regions, adequate
solutions to avoid or minimize the negative ecological impact of Amazon basin development still have
to be found.
Keywords: cattle, beef, sustainability, deforestation, farming systems
INTRODUCTION
With 7.5 million km2, the Amazon is the largest tropical forest in the world. The Amazon basin covers
eight countries: Brazil (67% of the area), Peru and Bolivia (25% together), Colombia, Venezuela,
Ecuador, Guyana, Surinam and French Guyana. It is comprises high diversity ecosystems: lowlands
along the Eastern Amazon river until its delta, savannas in Colombia and Brazil, respectively located
in the basin’s North-West and South-East, Andean Amazonian highlands in the West, Guyana plateau
in the North and, last but not least, the typical Amazon rainforest, which covers the main area in the
center of the basin.
Cattle ranching in the Brazilian Amazon started in the 16th century, at the beginning of the Portuguese
colonization, when navigators brought the first animals to satisfy farmers demand for milk and animal
draught (Desffontaines 1956). Cattle ranching has then expanded in the Low Amazon River regions,
from Santarém to the Marajó Islands, based on extensive farming systems on natural grasslands
(Teixeira 1953). At the beginning of the 20th century, the Brazilian Amazon herd was made of 750 000
cattle and 250 000 buffaloes. In the Andean Amazon, cattle ranching started later, in the 19th and 20th
centuries, by catholic missions from the Andean Sierras, where cattle ranching had been developed
during the Spanish colonization. Although cattle ranching is an old farming system in the Amazon, its
expansion has not been as fast as in Brazilian and Andean regions (Medeiros Neto 1970; Olmedo et al.
2001).
COLONIZATION IN THE AMAZON
The rise of colonization in the Amazon is strongly linked with the new policy decisions of the national
government in the 1960s. These choices were motivated by several political, economic and social
objectives: (i) to secure the integrity of national territories (ii) to exploit regional natural and hydro-
carbonic resources, (iii) to provide land to farmers that were excluded from economic growth in other
regions because of land concentration or agricultural mechanization. Thus, starting in the 1960s,
public investments have led to road building and other colonization projects in this region.
In the Brazilian case, three main roads have been built in order to link the Amazon to the Southern
States: the Belém – Brasília (Br 010), the Cuiabá – Santarém (Br 163), and the Cuiabá - Rio Branco
(Br 364). Another road has been built in the Eastern-Western axis, the Transamazon (Br 230). In
Andean countries, each government has built between one to three roads linking the Amazon to the
coastal regions through the Cordilleras. Finally, a marginal road has also been built along the Eastern
Cordillera from Santa Cruz de la Sierra (Bolivia) to Venezuela. Farmer’s migrations have been
stimulated by the construction of these roads, both spontaneously and organised by governments.
Anim. Prod. Aust. 2002 Vol. 24: 253-256
254.
Other policies have stimulated agricultural colonization. The Brazilian government has implemented a
tax-exemption program, in order to stimulate the “organization and establishment of large farms, almost
all for beef production, considering the pioneer role cattle have played in Brazilian agricultural history”
(Santiago 1986). In the Andean countries, recent studies have shown that low-interest and short-term
public loans have favored cattle ranching rather than perennials crops (Olmedo et al. 2001; Valencia et
al. 2001). Thus it can be said: “cattle feet have carried out the world greatest forest colonization”.
CATTLE RANCHING AS THE MAIN FARMING SYSTEM IN THE AMAZON BASIN
Since the beginning of the colonization in the 1960s, around 15% of the Amazon forest has been
removed through agricultural practices. Slash and burn is the most common way to open primary
forest: high-valued timber is sold to timber companies; annual crops are planted in the first year;
sometimes perennials crops are planted as well on good soils; pasture follows annual crops.
Nowadays, around 0.5 to 1% of the Brazilian Amazon forests is opened through slash and burn,
followed by pasture establishment, 3 to18 months later depending on the region (Tourrand et al. 1999;
Alves 2001). Pastures cover 80 % of deforested areas and represent the main land use, thus cattle herd
growth is a good indicator of expansion of the agricultural frontier.
During the last twenty years, cattle herd growth in the Brazilian Amazon has been impressive (see
Table 1). The main part of the Maranhão State, particularly the eastern part, has been colonized before
the 1960s, and the cattle expansion in the western has mostly occurred before 1990 and, since then,
cattle herd seems to be stabilized at around 1 head/hectare. A similar evolution occurred a little later in
the Tocantins State, and now, as in Maranhão, there is no more forest and pasture is the main land use.
Table 1: Bovine herd in legal Brazilian Amazon (x1000 head)
States 1980 1985 1990 1995 1996 1997 2000* 2001* Ratio 97/98
Acre
Amapá
Amazonas
Maranhão
Mato Grosso
Pará
Rondônia
Roraima
Tocantins
292
46
356
2 836
3 442
2 730
251
314
1 574
334
47
425
2 973
6 547
3 479
771
306
4 199
400
70
637
3 791
8 815
6 182
1 719
377
5 045
471
93
637
4 162
14 153
8 058
3 928
282
5 544
854
195
771
3 992
15 597
7 198
3 948
400
5255
863
205
810
3 962
16 363
7 925
4 342
378
5 363
892
238
940
3 868
18 888
10 577
5 779
319
5 708
902
250
988
3 838
19 814
11 645
6 357
301
5 828
5.1
13.1
5.0
0.8
2.5
10.6
17.9
12.5
1.7
Amazon 11 841 19 081 27 036 37 328 38 210 40 211 47 209 49 923 8.5
Source: IBGE and DBO rural magazine; * Estimation from 96/97 data
Today, the Brazilian agricultural frontiers are crossing Rondônia, Roraima, Eastern Pará and Northern
Mato Grosso. Since the 1990s, these regions have shown the highest deforestation rates, according to
the Brazilian Secretary of Environment (MMA, 2001), and the highest cattle growth rates. New
regions are developing through the conversion of forest in pastures. Villages and little cities are
growing rapidly. Local agribusiness is based on sawmills, slaughterhouses, dairy and leather factories,
, as well as on timber and cattle transport. Recently, in some regions, mechanized soybean, rice and
maize production has increased.
The agricultural frontier is now expanding as well through western Pará and Southern Amazonas,
which are still mainly covered by tropical forest. Colonization there remains based on timber
extraction and cattle ranching. If this trend persists, these regions will probably show the same pattern
of change as the other regions (MMA, 2001).
The situation in Acre and Amapá States is a little different, since local public policies try to prevent
anarchic frontier expansion through an effective control of timber and cattle activities and a promotion
of sustainable natural resources management, as self-sustainable forest management. The monitoring
of the development seems also to be easier since these States are smaller, still somewhat remote, and
with a low population density. Thus, agricultural frontier expansion appears to be more stable. Even if
cattle numbers are increasing, it seems to be due to farming intensification rather than to pasture
expansion.
It should be recognised that previously cited figures of the Brazilian Amazon herd may be
underestimated (Veiga et al., 2001b). Indeed, some cattle usually are not counted: (i) smallholders
Anim. Prod. Aust. 2002 Vol. 24: 253-256
255.
herds (10 to 20% of total); (ii) calves (around 20%); (iii) some herds of large companies, temporarily
kept in other ranches (5 to 10%). Thus, the real figures could be between 60 and 70 million head.
The previous analysis shows that, only 35 years ago, livestock in the Amazon was based only on 5
million head herd, whereas today the figure is close to 80 millions head, with an annual growth rate
of between 5 and 8%. Another important transformation is the replacement of natural grassland by
sown pastures in former forest areas. The distribution of the cattle herd along the different sub-regions
may be estimated as following: Eastern Brazilian Amazon (20-25 millions heads), Southern Brazilian
Amazon (25-30 millions heads), South-Western Amazon (10-12 millions heads), Central Andean
Countries Amazon (8 millions) and Northern Andean Countries Amazon (5 millions bovines).
DETERMINANTS OF CATTLE RANCHING EXPANSION IN THE AMAZON
Cattle ranching in the Amazon is often criticized in the scientific literature because of its numerous
harmful consequences on economic, social and ecological grounds (deforestation, land concentration,
biodiversity loss, land tenure concentration, and small contribution to regional development).
Opposing these viewpoints, some authors have argued that cattle ranching is a suitable agricultural
activity for the Amazon, is a good alternative for smallholders and allows safe returns on investment.
It is clear that most of these opposing arguments are valid under specific conditions and
generalizations cannot be easily made. Apart from these ideological positions, several researches in
the 1990s have identified the main factors responsible for cattle expansion in Amazon.
Firstly, the emergence of efficient beef production and marketing chains in the region allows low, but
secure prices for livestock products. Farmers in the Amazon can always sell cattle at a price indexed
on the biggest national markets (São Paulo, Lima, Quito, Guayaquil, Santa Cruz, Bogotá). Some other
agricultural activities may give higher returns, such as pepper in Brazil, but price or yield variability
often impedes security. For example, the price of annual crops (maize, rice, beans etc) shows seasonal
and annual variability. Perennial crops prices also fluctuate and depend on international markets. The
low variability in prices seems thus to guarantee safe returns in cattle ranching, from smallholders to
large farmers and from small traders to larger agribusiness companies.
Cattle ranching in the Amazon does not depend anymore on any kind of public subsidies: very low
production costs, around US$0.03/litre of milk and US$0.15/kg of meat (Machado 2000), make it very
competitive, allowing to trade livestock products around all Amazon basin. In Peru and Ecuador,
young bulls born and raised in the Amazon are fattened in Lima, Quito and Guayaquil with by-product
feed supplements (Olmedo et al. 2001; Valencia Chamba et al. 2001). In Brazilian, final products are
sold to the large markets of the Northeast, Southeast and South. With 25-30% of the Brazilian cattle,
Amazon is indirectly contributing to the increase of national livestock products export, from 200
millions tons in 1996 to 625 millions tones in 2000 (DBO, 2002).
Secondly, sown pasture performance is a major determinant of cattle expansion in the Amazon;
Brachiaria brizantha has become the major forage species planted in the Amazon and today, it counts
for around 95% of forage seeds sold in the region (Veiga et al. 2001 b). Its nutritive value is not as
high as of Panicum spp, but allows live weight gains of around 600-800 g/day. Moreover, it is very
competitive with weeds that tend to grow as pasture management fails or soils fertility declines. The
soil cover of Brachiara brizantha is dense and its roots are deep, which allows a reasonable forage
production during the dry season.
Thirdly, few agricultural alternatives can compete with cattle ranching in the Amazon. Whereas
mechanized soybean or annual crop may allow large benefits, few farmers and agribusiness companies
are yet to invest on it. Large producers prefer to stay in the livestock production and marketing chain,
while wait for specific loans to invest in agroforestry or annual crops, even if the succession of 2-3
years of annual cropping followed by 5-8 years of pastures has a great potential, particularly in drier
region of the Northern Mato-Grosso or South- Eastern Pará States. These alternatives depend also on
the development of local technological skills.
In many regions, some smallholders have faced major difficulties due to price fluctuations of perennial
crops and to crop diseases, mainly with cocoa, sugarcane, pepper and coffee. Some small farmers who
have diversified their production systems with typical Amazonian crops, such as cupuaçú and guaraná,
Anim. Prod. Aust. 2002 Vol. 24: 253-256
256.
have not succeeded in the long term. The exploitation that may better fit to smallholders’ features is
milk production, also linked to cattle ranching. Diversified farming systems based on meat and milk
production seems to be the main sustainable alternative for small farmers in the Amazon, what need to
be confirmed in the long term (Veiga et al. 2001c).
THE EMERGENCE OF MORE SUSTAINABLE FARMING SYSTEMS?
Recently, it has been noticed that large farmers are beginning to be concerned about their negative
ecological impacts. In Brazil, the current strategy of some farmers is to not rely only on timber
extraction and land tenure expansion. Some of them are trying to use new financial supports to reforest
degraded areas or to implement agroforestry systems. For example, in the South of Para, a large cattle
rancher has planted teck (a valuable timber tree) in his pastures, increasing land productivity and
decreasing environmental negative externalities (Piketty et al. 2001). Some smallholders have also
developed small-scale-agroforestry systems, integrating perennial crops with fruit or timber trees
(Smith et al. 1996). However, these experiences are still poorly developed, and sometimes only
experimental (Boulanger 2001), despite increasing governmental incentives.
CONCLUSION
Over the last thirty years, the Amazon rainforest has become one of the main cattle ranching regions in
the world. With 5 to 8% annual expansion, the growth of cattle herd is still strongly affecting forest
resources in this region. Negative ecological impacts are evident, however economic and social
constraint cannot always be generalized. Cattle ranching has allowed many smallholders to improve
their livelihoods, particularly through dairy production. Still poorly developed, more sustainable
farming systems are being encouraged by new international and national regulations, as well as by
society. Adequate solutions to avoid or minimize the negative ecological impact of development of
Amazon basin are necessary and part of these solutions will have to be found within the livestock
sector.
REFERENCES
ALVES, D.S. (2001). ‘ Desmatamento e fragmentação da florestas na Amazônia’. (INPE : São José dos Campos )
DBO Rural. Magazine (1990-2001)
BOULANGER, D. (2001) ‘L’arbre hors forêt sur le front pionnier amazonien: le cas du Municipe d’Uruara’
(Engref-Paris)
DESFFONTAINES, P. (1956).. In ‘Congresso Internacional de Geográfia’ (Rio de Janeiro)
IBGE (1994. 1998). ‘Anuários estatísticos’ do Brasil. (IBGE: Rio de Janeiro).
Machado, R.C. (2000). ‘Práticas de criação de bovinos na agricultura familiar da região de Marabá no Sudeste do
Pará na Amazônia Oriental brasileira’.(Universidade Federale do Pará : Belém).
MMA (2001). Causas e dinâmica do desmatamento na Amazônia. (Ministerio de Meio Ambiente : Brásilia)
OLMEDO, J.G. (2001). ‘Caracterización de la Región Amazónica Ecuatoriana. Revisión de fuentes secundarias’
(INIAP : Quito)
PIKETTY M.G., POCCARD-CHAPUIS, R., VEIGA, J.B. and TOURRAND J.F. (2002). In ‘Bois & Forêts des
Tropiques’ 272, 75-87
SANTIAGO, A.A. (1986). ‘ O zebu na Índia, no Brasil e no mundo’ .(Inst. Camp. Ensino Agric. Campinas).
SMITH N.J.H., FALESI I.C.,ALVIM P.T., and SERRÃO E.A.S. (1996). In : Ecological Economics, 18, 15-27
TEIXEIRA, J.F. (1953). ‘O Arquipélo de Marajó’.(Cong. Bras. Geografia X, vol III: Rio de Janeiro).
TOURRAND J.F.,VEIGA J.B.,FERREIRA, L.A., LUDOVINO R.M.R., POCCARD-CHAPUIS, R. and
SIMÃO-NETO, M. (1999). In ‘Patterns and Processes of Land Use and Forest Change in the Amazon’.
(University of Florida : Gainesville)
VALENCIA CHAMBA T., RIOS ALVORADO J., et al. (2001). ‘Cattle Ranching, Land Use and Deforestation in
Brazil, Peru and Ecuador. Peruvian report’ (University of Florida-LATAM : Gainesville)
VEIGA, J.B., POCCARD-CHAPUIS, ALVES, A.M., PIKETTY, M.G., THALES, M.C.; OLMEDO, J.G.,
CHAMBA, F.V., ALVARADO, J.R. and TOURRAND, J.F. (2001). In ‘Jornadas Agrarias’ November 7-9th
(Universidade. of Buenos Aires).
VEIGA, J.B., TOURRAND, J.F., POCCARD-CHAPUIS, R. et al. (2001b). ‘Cattle Ranching, Land Use Change
and Deforestation in Brazil, Peru and Ecuador – O caso da Amazônia Oriental’. (University of Florida –
LATAM, Gainesville)
VEIGA, J.B., POCCARD-CHAPUIS, R., PIKETTY, M.G. and TOURRAND, J.F. (2001c) ‘Produção leiteira e
desenvolvimento regional na Amazônia Brasileira’ (Embrapa Amazônia Oriental, Belém).
Email:tourrand@aol.com
... The Amazon biome has lost approximately 20% of its primary forests since the 1960s (Assis et al. 2019), releasing carbon and potentially disrupting the regional climate (Lovejoy and Nobre 2018;Davidson et al. 2012). Pasture expansion is the leading cause of deforestation in the Amazon (Henshall 1982;Buschbacher 1986;Batistella et al. 2003;Sy et al. 2015;Veiga et al. 2002), so mapping land cover transitions on areas cleared for pasture is a key step to understanding the consequences of deforestation. In particular, the dynamics of woody vegetation, both during and following clearing, play a key role in maintaining regional energy and carbon balances. ...
Article
Full-text available
The Amazon Basin is experiencing large-scale land use conversion from primary forest to pasture. While several land cover datasets map cleared areas in the Amazon, the percent cover of woody vegetation (trees and shrubs) in cleared areas and its association with clearing age, soil type, and geology is poorly understood, despite its importance for carbon emissions, biodiversity, land–atmosphere interactions, and monitoring of pasture condition. We used temporal mixture analysis on Sentinel-2 imagery from 2019 to map woody vegetation cover on cleared areas in Rondônia, Brazil. Binary woody vegetation masks were generated at 10-m resolution using a threshold of the evergreen endmember, with an overall accuracy of 84%. The age of clearing for each pixel was calculated from MapBiomas (Sousa and Davis, Remote Sens Environ 247, 2020) with a 2019 base year. We find little evidence of large-scale abandonment of pasture: most (53%) of the cleared area in 2019 was “clean pasture” (< 10% woody vegetation cover), 34% was “dirty pasture” (10–90% woody vegetation cover), 10% was forest (90–100% woody vegetation cover), and 3% was early stage clearing (> 10% woody vegetation cover, cleared 1–5 years ago). Recently cleared areas (1–2 years) had high (60%) woody vegetation cover, woody vegetation cover decreased with pasture age, and older pastures (20–34 years) had consistently low woody vegetation cover (25% on average). The commonly observed decrease in greenness with increasing clearing age, which is sometimes interpreted as decreasing grass health, was due in part to decreasing woody vegetation cover as pastures were gradually cleared over a decade. These results suggest modifications to existing conceptual models that describe clearing as a rapid process with high rates of secondary growth. We found a gradual and semi-permanent clearing of woody vegetation and proposed a revised conceptual model of deforestation dynamics.
... Tempestades intensas Quebra de galhos e troncos, aumento da mortalidade de árvores de grande porte. Além disso, as atividades humanas, como incêndios florestais (20%), exploração madeireira ilegal (15%) e expansão agropecuária (12%), agravam as taxas de mortalidade, ao modificar a estrutura florestal e reduzir a diversidade de espécies (VEIGA et al., 2002;SANTOS DE LIMA et al., 2018;SEYDI et al., 2022). O impacto das tempestades e o surgimento de espécies de rápido crescimento, embora menos representados (10% e 8%, respectivamente), são igualmente significativos, pois comprometem a resiliência da floresta e sua capacidade de atuar como sumidouro de carbono a longo prazo (BRIENEM et al., 2015;YANG et al., 2018). ...
Chapter
A Amazônia é hoje uma das regiões mais ricas em biodiversidade do planeta, e território de pesquisa em diversas áreas de conhecimento. Diante disto, esta obra agrega estudos realizados por professores, estudantes e pesquisadores, e se constitui em um espaço de construção crítica e científica do conhecimento. Resulta, também, de movimentos interinstitucionais e de ações de incentivo à pesquisa que congregam pesquisadores das mais diversas áreas do conhecimento e de diferentes Instituições de Educação Superior públicas e privadas de abrangência nacional e internacional. O Objetivo desta obra, é divulgar novos saberes sobre a região, e integrar uma rede de pesquisadores e instituições e estimular a formação continuada dos profissionais da educação, por meio da produção e socialização de conhecimentos das diversas áreas do Saberes. Portanto, a obra reflete o valor da educação continuada, incentivando a formação constante por meio do compartilhamento de perspectivas e descobertas das várias áreas de conhecimento representadas. Agradecemos a todos os autores pelo empenho, disponibilidade e dedicação para o desenvolvimento e conclusão dessa obra. Esperamos também que esta obra sirva de instrumento didático-pedagógico para estudantes, professores dos diversos níveis de ensino em seus trabalhos e demais interessados pela temática.
... Meanwhile, more small-scale farming takes place with the emergence of new collaborative arrangements in the region (Futemma et al., 2020). Livestock rearing, particularly cattle ranching, also occurs in certain regions (Veiga et al., 2002;da Silva et al., 2021). ...
Chapter
The Amazon River basin (Fig. 1), with its headwater located in the Andes Mountains in Peru, covers approximately 40% of the Brazilian territory and 75% of the Peruvian territory, as well as significant parts of Colombia, Ecuador, and Bolivia. It represents the Earth’s largest drainage system (6.15 × 106 km2) and the second longest river (~6,437 km).
... Desde los años sesenta, los ocho países que conforman la cuenca amazónica han experimentado un incremento del número de cabezas de ganado de 5 millones a un mínimo de 70 millones (Walker et al., 2009;Veiga et al., 2002). Tal aumento vino acompañado de un considerable impacto sobre los bosques. ...
Article
Full-text available
El objetivo del artículo es describir y analizar las características productivas, así como el correspondiente impacto ambiental de la pequeña y mediana ganadería extensiva practicada por colonos-mestizos y por pobladores del grupo étnico Shuar, en el cantón Morona, ubicado en la Amazonía ecuatoriana. Es indiscutible que existen formas de ganadería extensiva más sostenibles que otras, pero el volumen de tierras desboscadas constituye un problema en sí mismo que debe ser abordado. Tal sistema productivo se basa en la circulación del ganado entre los potreros de una finca debido, entre otros aspectos, al bajo potencial nutritivo del denominado pasto gramalote. Dicha actividad genera deforestación en extensiones amplias de terreno. Entre los factores que acentúan tales niveles de desbosque seencuentran, por un lado, el mayor tamaño de las unidades agropecuarias y la necesidad de compensar la pérdida en el potencial nutritivo de los pastizales y, por otro lado, la percepción crematística de los bosques. La ganadería extensiva ha demostrado, especialmente entre los colonos, tener una gran capacidad de resiliencia durante los últimos cuarenta años, a pesar de las fluctuaciones en la demanda urbana de carne y de su impacto ambiental sobre el bosque. Los ganaderos de la región han mantenido a laganadería como una fuente de ingresos, un mecanismo de capitalización, una actividad viable en un contexto de relativa escasez de mano de obra y un medio de obtener status social en un contexto de frontera. En fin, una forma de reproducir su economía familiar.
... Around 80% of the deforested areas of the Amazon forest have been covered by pasture (i.e., approximately 900 000 km 2 ). Cattle expansion occurs in the new agricultural frontier areas, from the Eastern Brazilian Amazon (i.e., states of Maranhão and Pará), through the Southern Brazilian Amazon (i.e., states of Tocantins, Mato Grosso, and Rondônia; Piketty, Poccard-Chapuis, Veiga & Tourrand, 2002). Currently, farmers from this region are concerned about their negative ecological impacts, as sustainable livestock intensification is still a challenge in the Amazon biome. ...
Article
This study evaluated the effect of a prostaglandin F2? (PGF) analogue as an ovulatory stimulus in dairy cows and buffaloes raised in the Amazon biome. To this end, three experiments were performed in the state of Rondônia, located in the Amazon biome. In Experiment 1, 22 lactating dairy buffaloes received 2 mg of intramuscular (I.M.) estradiol benzoate (EB) on day 0 and an intravaginal progesterone-releasing device (CIDR) from day 0 to day 9 of the protocol. On days 8 and 9, all cows were given 500 ?g of I.M. d-cloprostenol (PGF analogue). On day 10, buffaloes were divided into two groups to receive 500 ?g of PGF (PGF group, n = 8) or no treatment (CTL group, n = 14), respectively. In Experiment 2, 16 lactating crossbred dairy cows (Holstein x Gir) received 2 mg of EB on day 0 and a CIDR insert from day 0 to day 8. On days 7 and 8, all cows were given 500 ?g of d-cloprostenol. On day 9, cows were divided into two groups to receive 500 ?g of d-cloprostenol (PGF group, n = 8) or no treatment (CTL group, n = 8), respectively. In Experiment 3, 16 lactating crossbred dairy cows (Holstein x Gir) were handled and treated similarly as in Experiment 2, although cows did not receive d-cloprostenol on day 8. Single-point outcome variables were analyzed using one-way analysis of variance (ANOVA), while proportions with dichotomous outcomes were analyzed with the chi-square test. In Experiment 1, there was no difference (P = 0.30) in the ovulation rate between groups, and, on average, 68% of the buffaloes ovulated. Moreover, the treatment did not affect the interval to ovulation (P = 0.61) nor the diameter of the preovulatory follicle (P = 0.47). As for Experiment 2, only one cow, from the PG group, did not ovulate. There were no differences between the CTL and PG groups (P = 0.69) in the moment of ovulation, which occurred in average 82 h after CIDR removal. Finally, in Experiment 3, cows treated with PGF ovulated earlier than those in the CTL group (62.5 ± 5.8 and 94.5 ± 13.5 h, respectively; P = 0.05). Collectively, these results suggest that PGF hastens ovulation in lactating dairy cows, whereas no effect was observed in dairy buffaloes.
... The area of this macro-region is 5.2 million km 2 , or 61% of Brazilian territory. With the migration of livestock rearing to this area, about 15% of the Amazon rainforest was depleted and approximately 80% of the deforested areas have now been replaced by cultivated pastures (Veiga et al., 2002). ...
Article
Full-text available
The agricultural industry is the main emitter of methane (CH4) and nitrous oxide (N2O), gases that each have a global warming potential that is greater than that of CO2 by 23 and 298 times, respectively. On a global scale, enteric fermentation from ruminant animal production (especially of cattle and sheep) is responsible for between 21% and 25% of total anthropogenic CH4 emissions. The search for effective, simple, and fast methods to measure the production of CH4 and other products from ruminal fermentation has been the objective of several studies on ruminant nutrition. Thus, techniques have been developed under experimental conditions of Brazil and other international countries to quantify CH4 emissions of ruminants. The objective of this literature review is to discuss and compare the existing techniques of measuring enteric CH4 from ruminants. Each technique has a shortcoming or disadvantage in its characterization of ruminal fermentation. The ex-situ technique of measuring CH4 from ruminal fermentation has been quite promising, because it facilitates the measurement of CH4 and other fermentation products, such as short chain fatty acids (SOFA). CH4 detection by a portable laser is effective in monitoring fluctuations in emission and is recommended especially for short-term measurements of respiring and eructating animals reared in a feedlot system. Other methods are being improved and better adapted for practical use in the ongoing quest for more efficient uses of ruminal fermentation products.
Chapter
Full-text available
The types of fraud encountered in enterprises are mainly classified into asset abuse, corruption, and financial statement fraud. The literature deals with the use of big data to detect these frauds from various sectors’ perspectives. The studies have stated that the data generated in the enterprise’s internal and external environments provides faster access than the database, reliable evidence is obtained by analyzing these data, and this evidence effectively detects fraud. In this study, big data in detecting fraud in hotel businesses is presented within the literature framework. The hotel industry has diverse data generated from management information systems, websites, social media, and blogs. Big data transforms these multiple source data into valuable, meaningful, and processable forms. When big data is interpreted with appropriate analysis techniques, it enables enterprises to manage fraud risks.
Chapter
Full-text available
Pristine forest ecosystems provide a unique perspective for the study of plant-associated microbiota since they host a great microbial diversity. Although the Amazon forest is one of the hotspots of biodiversity around the world, few metagenomic studies described its microbial community diversity thus far. Understanding the environmental and anthropic factors (illegal logging activities)that can cause shifts in microbial occurrence in different habitats, specifically in the rhizosphere of a relevant tree species for forests’ biodiversity conservation, such as Dipteryx micrantha (Fabaceae),is a key object to preserving soil biogeochemical cycles and ecosystems functioning (McGee et al.,2019). The aim of this study is to characterize the microbiome of Amazonian soils and rhizospheresfrom both “standing” and logged Dipteryx micrantha trees (Shihuahuaco) in Junglekeepers Reserve(Perù). The study required a preliminary assessment of the Reserve with a soil sampling step thatwas carried out in 2019 and here reported as an integral section of the work. The Next Generation Sequencing (NGS) approach was applied to analyze microbial diversity and, moreover, soil chemical characterization was performed for total carbon (C%), nitrogen (N%) and C:N ratio. The results show a high convergence for the Archaea and Bacteria phyla with other pristine forest ecosystems, spatially related to Junglekeepers reserve. Furthermore, OTUs data provide relevant ecological information on the microbial rhizospheres’ effects for D. micrantha and highlight the occurrence of microbial shifts in rhizosphere of Dipteryx sp., affected by illegal logging activities.
Chapter
Full-text available
Una dettagliata introduzione alla foresta Amazzonica con annessa descrizione dell'ecologia di una specie arborea in via d'estinzione (Dipteryx micrantha)
Desmatamento e fragmentação da florestas na Amazônia'. (INPE : São José dos Campos ) DBO RuralL'arbre hors forêt sur le front pionnier amazonien
  • D S Alves
  • D Boulanger
ALVES, D.S. (2001). ' Desmatamento e fragmentação da florestas na Amazônia'. (INPE : São José dos Campos ) DBO Rural. Magazine (1990-2001) BOULANGER, D. (2001) 'L'arbre hors forêt sur le front pionnier amazonien: le cas du Municipe d'Uruara' (Engref-Paris)
Práticas de criação de bovinos na agricultura familiar da região de Marabá no Sudeste do Pará na Amazônia Oriental brasileira
  • R C Machado
Machado, R.C. (2000). 'Práticas de criação de bovinos na agricultura familiar da região de Marabá no Sudeste do Pará na Amazônia Oriental brasileira'.(Universidade Federale do Pará : Belém).
Caracterización de la Región Amazónica Ecuatoriana Revisión de fuentes secundarias
  • Brásilia
  • J G Olmedo
  • M G Piketty
  • R Poccard-Chapuis
  • J B Veiga
  • J F Santiago
MMA (2001). Causas e dinâmica do desmatamento na Amazônia. (Ministerio de Meio Ambiente : Brásilia) OLMEDO, J.G. (2001). 'Caracterización de la Región Amazónica Ecuatoriana. Revisión de fuentes secundarias' (INIAP : Quito) PIKETTY M.G., POCCARD-CHAPUIS, R., VEIGA, J.B. and TOURRAND J.F. (2002). In 'Bois & Forêts des Tropiques' 272, 75-87 SANTIAGO, A.A. (1986). ' O zebu na Índia, no Brasil e no mundo'.(Inst. Camp. Ensino Agric. Campinas).
Patterns and Processes of Land Use and Forest Change in the Amazon'. (University of Florida : Gainesville)
  • Tourrand J F Veiga
  • J B Ferreira
  • L A Ludovino
  • R M R Poccard-Chapuis
  • R Simão-Neto
  • M Valencia
TOURRAND J.F.,VEIGA J.B.,FERREIRA, L.A., LUDOVINO R.M.R., POCCARD-CHAPUIS, R. and SIMÃO-NETO, M. (1999). In 'Patterns and Processes of Land Use and Forest Change in the Amazon'. (University of Florida : Gainesville) VALENCIA CHAMBA T., RIOS ALVORADO J., et al. (2001). 'Cattle Ranching, Land Use and Deforestation in Brazil, Peru and Ecuador. Peruvian report' (University of Florida-LATAM : Gainesville) VEIGA, J.B., POCCARD-CHAPUIS, ALVES, A.M., PIKETTY, M.G., THALES, M.C.; OLMEDO, J.G., CHAMBA, F.V., ALVARADO, J.R. and TOURRAND, J.F. (2001). In 'Jornadas Agrarias' November 7-9 th (Universidade. of Buenos Aires).
Cattle Ranching, Land Use Change and Deforestation in Brazil
  • J B Tourrand
  • J F Poccard-Chapuis
VEIGA, J.B., TOURRAND, J.F., POCCARD-CHAPUIS, R. et al. (2001b). 'Cattle Ranching, Land Use Change and Deforestation in Brazil, Peru and Ecuador – O caso da Amazônia Oriental'. (University of Florida – LATAM, Gainesville)
  • J B Poccard-Chapuis
  • A M Alves
  • M G Piketty
  • M C Thales
  • J G Olmedo
  • F V Chamba
  • J R Alvarado
VEIGA, J.B., POCCARD-CHAPUIS, ALVES, A.M., PIKETTY, M.G., THALES, M.C.; OLMEDO, J.G., CHAMBA, F.V., ALVARADO, J.R. and TOURRAND, J.F. (2001). In 'Jornadas Agrarias' November 7-9 th (Universidade. of Buenos Aires).
  • Smith N J H C Falesi I
SMITH N.J.H., FALESI I.C.,ALVIM P.T., and SERRÃO E.A.S. (1996). In : Ecological Economics, 18, 15-27 TEIXEIRA, J.F. (1953). 'O Arquipélo de Marajó'.(Cong. Bras. Geografia X, vol III: Rio de Janeiro).
Causas e dinâmica do desmatamento na Amazônia. (Ministerio de Meio Ambiente : Brásilia)
  • Mma
MMA (2001). Causas e dinâmica do desmatamento na Amazônia. (Ministerio de Meio Ambiente : Brásilia)
Anuários estatísticos' do Brasil
IBGE (1994. 1998). 'Anuários estatísticos' do Brasil. (IBGE: Rio de Janeiro).
Cattle Ranching, Land Use and Deforestation in Brazil, Peru and Ecuador
  • T Valencia Chamba
  • Alvorado J Rios
VALENCIA CHAMBA T., RIOS ALVORADO J., et al. (2001). 'Cattle Ranching, Land Use and Deforestation in Brazil, Peru and Ecuador. Peruvian report' (University of Florida-LATAM : Gainesville)