Revisiting Theories of Frontier Expansion in the Brazilian Amazon: A Survey of the Colonist Farming Population in Rondônia’s Post-Frontier, 1992–2002

Browder, John O.; Pedlowski, Marcos Antônio; Walker, Robert; Wynne, Randolph H.; Summers, Percy M.; Abad, Ana; Becerra-Cordoba, Nancy; Mil-Homens, Joao

doi:10.1016/j.worlddev.2007.08.008

Cited by 115 publications

(85 citation statements)

References 21 publications

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“…The distribution of existing areas of forest among CTs is strongly associated with patterns of actor dominance. Overall, there is more forest in CTs dominated by smallholders (SI Appendix, Table S2), which is expected, given that they have traditionally dominated areas close to the forest frontier (21). In absolute terms 779,468 km 2 , or 24.0% of the total forest area in the BLA, can be found in CTs dominated by smallholders, whereas only 13.2%, 5.6%, and 11.9% of the total remaining forest can be found in CTs dominated by medium, large, and very large landholders.…”

Section: Resultsmentioning

confidence: 62%

Actor-specific contributions to the deforestation slowdown in the Brazilian Amazon

Godar

Gardner

Tizado

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

206

137

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Significance The Brazilian Amazon is at a critical juncture after the recent stabilization of deforestation rates. Identifying opportunities for continued deforestation reductions requires an understanding of the contribution of different actors to overall deforestation. We provide the first such assessment, to our knowledge, that reports on two headline findings. First, between 2004 and 2011, areas dominated by properties larger than 500 ha accounted for 48% of the deforestation compared with only 12% for smallholders (<100 ha). Second, the deforestation share attributed to the largest properties (≥2,500 ha) declined by 63% from a peak in 2005, whereas that of smallholders increased by 69%. Further reductions in deforestation are likely to require a shift toward more incentive-based policies that are tailored toward different actors.

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Section: Resultsmentioning

confidence: 62%

Actor-specific contributions to the deforestation slowdown in the Brazilian Amazon

Godar

Gardner

Tizado

et al. 2014

Proc. Natl. Acad. Sci. U.S.A.

206

137

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“…Even though government subsidies have decreased in the last two decades, subsidized loans for pasture activities can still influence household level decisions (Moran 1993;Brasil 2007). In old settlements the ageing of householders affects labour force availability, which can lead to an increase of pasture area and even force small farmers to sell their land in areas progressively dominated by large farms (Browder et al 2008). This local dynamics can explain the stronger causality between deforestation and the number of inhabitants as well as between deforestation and the per capita income rather than population density in old settlements in the northeast of Rondônia State (Soler, Escada, and Verburg 2009).…”

Section: Selection Of Land Cover Change Determinantsmentioning

confidence: 99%

Using fuzzy cognitive maps to describe current system dynamics and develop land cover scenarios: a case study in the Brazilian Amazon

Soler

Kok

Câmara

et al. 2012

Journal of Land Use Science

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In this study we developed a methodology to identify and quantify the relationships among determinants of land cover change using a regional case study in the Brazilian Amazon. The method is based on the application of fuzzy cognitive maps (FCMs), a semi-quantitative tool that provides a structured assessment of key feedbacks in scenario analysis. Novel to the application of FCMs is the use of spatial data-sets as the main input to build a cognitive map. Identification of interactions between land cover determinants and strengths is based on an empirical analysis of spatially explicit data and literature review. Expert knowledge is adopted to identify the strengths and weaknesses of the method. Potential pitfalls, such as spatial autocorrelation and scale issues, identified are intrinsic to the empirical data analysis. The outputs of the resulting FCMs are compared to the outputs of spatially explicit models under similar scenarios of change. The proposed method is said to be robust and reproducible when compared with participatory approaches, and it can endorse the consistency between demand and allocation in scenario analysis to be used in spatially explicit models.

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“…Numerous criticisms, however, were still made by national and international experts, especially social NGOs, which had extremely limited participation in the project (World Bank 1995;Rodrigues 2002). For instance, critics highlighted the increase in deforestation during the implementation of PLANAFLORO (Browder et al 2008) and thereafter. From 1990 to 2000, Rondônia State lost 26,247 km² of forests, corresponding to 12.94% of its natural coverage.…”

Section: Introductionmentioning

confidence: 99%

What survived from the PLANAFLORO Project: angiosperms of Rondônia state, Brazil

Carleial¹,

Bigio²

2014

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The PLANAFLORO Project funded botanical expeditions in different areas of the state to inventory arboreal plants with potential use in the wood industry. The aim of the present study was to recover plant specimens and data collected during PLANAFLORO's ecological-economic zoning study between 1996 and 1997 and to disseminate these data and a preliminary checklist of the angiosperm trees in Rondônia State. Materials and MethodsUnfortunately, the plant collections made during PLANAFLORO are dispersed. After almost 15 years neglected, less than half (870) of the originally 4000 vouchers were fertile and relatively undamaged. That material was decontaminated with a combination of 70% ethanol and 0.2% sodium hypochlorite. Then, it was frozen two times for three days, with a three-day interval, before transference to the main herbarium collection. Finally, specimens were registered, mounted, and deposited under an official voucher number at the Herbário RondonienseJoão Geraldo Kuhlmann (RON) of the Federal University of Rondônia (UNIR). The vouchers are available digitally at the RON website (http://www.ron.unir.br).To gather the information from the specimens, all available labels and identification lists were used. Collection sites, when specified, included protected areas, riparian zones, highways and farms, although we only mention here the entire municipality (Figure 1). Some specimens collected by Hamilton S. Pereira, however, lacked crucial information about site or date of collection and were only included to indicate new records for Rondônia State [see Table 1, tagged as (?)]. In addition, further information on date of collection, common name, and collector name and number were also recovered, when possible. The collector names were Araújo

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Revisiting Theories of Frontier Expansion in the Brazilian Amazon: A Survey of the Colonist Farming Population in Rondônia’s Post-Frontier, 1992–2002

Cited by 115 publications

References 21 publications

Actor-specific contributions to the deforestation slowdown in the Brazilian Amazon

Actor-specific contributions to the deforestation slowdown in the Brazilian Amazon

Using fuzzy cognitive maps to describe current system dynamics and develop land cover scenarios: a case study in the Brazilian Amazon

What survived from the PLANAFLORO Project: angiosperms of Rondônia state, Brazil

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