Determinants of livelihood strategy variation in two extractive reserves in Amazonian flooded and unflooded forests

Abstract

SUMMARYExtractive reserves account for a significant proportion of the remaining intact forest within Brazilian Amazonia. Managers of extractive reserves need to understand the livelihood strategies adopted by rural Amazonians in order to implement projects that benefit the livelihoods of local residents whilst maintaining forest integrity. Whilst resident populations are often descended from immigrant rubber-tappers, dynamic economic and social conditions have led to a recent diversification of land-use practices. This two-year study in two large contiguous extractive reserves encompassing both unflooded (terra firme) and seasonally flooded (várzea) forest, shows the degree to which local livelihood strategies of different settlements are heterogeneous. Extractive offtake of forest products and fish catches and agricultural activities, together with income from sales, for 82 households in 10 communities were quantified in detail by means of weekly surveys. The survey data were combined with interviews to examine the demographic and wealth profile, and engagement in alternative activities, in 181 households across 27 communities. All households and communities were engaged in all three subsistence activity types, but there was large variation in engagement with income-generating activities. Households within a community showed considerable congruence in their income-generating activity profiles, but there was significant variation between communities. Yields from agriculture and fishing were more temporally stable than extraction of highly-seasonal forest products. Generalized linear mixed models showed that forest type was consistently important in explaining yields of both agrarian and extractive products. Communities with greater access to terra firme forest were inherently more agricultural, and strongly committed to manioc production. Communities with greater access to flooded forest, however, showed a greater dependence on fishing. Conservation should be more attuned to the diversity and dynamism of livelihood strategies in protected areas; in particular, reserve managers and policy

Human-Induced Trophic Cascades along the Fecal Detritus Pathway

“…Adjacent to the reserve system lies the municipal town of Carauari and the satellite community of Riozinho, with a total estimated population of 25,200 [37]. Reserve residents variously engage in hunting, fishing and forest extraction as well as small-scale agriculture for both local subsistence and commerce [32]. Subsistence hunting is legal in Brazilian multiple-use protected areas and reserve residents hunt with shotguns to supplement an otherwise fish and manioc-based diet.…”

“…Seasonally flooded forests (várzea) along white-water rivers account cover roughly 180,000 km 2 of the 7 million km 2 (2.6%) of the Amazon basin [28]. These forests differ dramatically in several factors that may influence cascade strength, including edaphic productivity [29], [30], vertebrate diversity [29], [31] and the seasonality and intensity of human resource use and access [32], including patterns of hunting and fishing [33].…”

Landscape-scale variation in structure and biomass of Amazonian seasonally flooded and unflooded forests

“…Using the same GIS procedure we calculated the distance of each plot to the nearest point along the Juruá river channel and the nearest semi-permanent human settlement (defined as a >25 year old cluster of more than one stable household), using a digital map of all households within the two focal reserves (Newton et al, 2012b). These values were employed as proxies for accessibility to selective logging.…”

Reservas Extrativistas Na Amazônia: Modelo Conservação Ambiental E Desenvolvimento Social?

“…Políticas de manutenção de reservas são mais eficientes quando sustentadas em relações democráticas. Elas auxiliam gestores a realizar mudanças dentro de cenários demográficos e econômicos, para melhor utilização dos recursos disponíveis (Newton;Endo;Peres, 2011). Em contrapartida, precárias condições de vida dos habitantes desses territórios condicionam atividades produtivas que causam degradação ambiental (Riemann; Santes-Álvarez; Pombo, 2011).…”