9. Economic Incentives for Sustainable Community Management of Fishery Resources in the Mamirauá Sustainable Development Reserve, Amazonas, Brazil

Viana, João Paulo Teixeira; Damasceno, José Maria B.; Castello, Leandro; Crampton, William G. R.; Silvius, Kirsten M.; Bodmer, Richard E.; Fragoso, José M. V.

doi:10.7312/silv12782-009

Cited by 14 publications

(20 citation statements)

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“…Almeida et al (2006) recorded higher fishery productivity in lakes with fishing agreements than in those with no regulations. Furthermore, the management of tambaqui (Colossoma macropomum) and pirarucu (Arapaima gigas) stocks in lakes of the Brazilian Mamirauá Sustainable Reserve, led to an increase in their populations (Viana et al 2004, 2007, Silvano et al 2009). This type of reserve permits the exploitation of natural resources by local populations, based on the establishment of an integrated management plan involving local communities and government agencies.…”

Section: Food Consumption In Riparian Communities Of the Amazon 2237mentioning

confidence: 99%

“…In the Amazon basin, despite the increasing pressure from commercial fisheries in recent decades (McGrath et al 1993, Isaac et al 1998b, Crampton et al 2004, fish are still the primary source of animal protein for most riverine populations. A fish-based diet, reduces the risk of disease , and balances a diet that would otherwise be poor in protein (Dorea 2003).…”

Section: Introductionmentioning

confidence: 99%

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Food consumption as an indicator of the conservation of natural resources in riverine communities of the Brazilian Amazon

Isaac

Almeida

Giarrizzo

et al. 2015

An. Acad. Bras. Ciênc.

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The present study analyzed and compared the daily consumption of foods of animal origin in eleven communities of the Lower Amazon, Trombetas and Purus Rivers, representing three different management systems and levels of conservation in the Brazilian Amazon. All food items of animal origin were weighed by at least 10% of the families in the study communities during a week in each period of the flood cycle between 2006 and 2008. Fish was the most important food, and was consumed during six days of the week, with an average rate of 169 kg.person -1 .year -1 . Game was second in importance, with 37 kg.person -1 . year -1 . This yearly rate of fish consumption is one of the highest in the world and is almost double the minimum recommended by the World Health Organization. The dietary patterns reflect both the isolation of the communities from large urban centers and the better preservation of the local environments due to the existence of protected areas. Environmental degradation may thus have effects on the health and food security of local populations. The study emphasizes the need for the implementation of public policies and participative management initiatives.

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Section: Food Consumption In Riparian Communities Of the Amazon 2237mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Food consumption as an indicator of the conservation of natural resources in riverine communities of the Brazilian Amazon

Isaac

Almeida

Giarrizzo

et al. 2015

An. Acad. Bras. Ciênc.

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“…Accuracy of the counts was assessed through direct comparison with mark‐recapture and total catches. This methodology was used in a system in which local fishers assess Arapaima populations each year, then collaborate with the Mamirauá Institute and IBAMA to use the data in determining fishing quotas for the next year (Viana et al., 2004). In this system, the Mamirauá Institute provides institutional and technical assistance to local fishers, IBAMA oversees management actions and approves (or not) legal permits for the annual fishing quotas, and the fishers are responsible for complying and enforcing management regulations.…”

mentioning

confidence: 99%

“…Due to lack of information fishing quotas to date have been determined based on trial‐and‐error and educated guesses. Nine years of experimentation have shown that where this management model was implemented, fishers’ profits more than doubled, fishers engaged in the process, and Arapaima populations recovered rapidly (Viana et al., 2004; Castello et al., 2009). Those population trends were compared to neighboring populations that remained stable at low densities, suggesting that the observed trends were the result of local management efforts (Castello et al., 2009).…”

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confidence: 99%

Assessing CITES non-detriment findings procedures forArapaimain Brazil

Castello

Stewart

2010

Journal of Applied Ichthyology

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Arapaima are listed as endangered fishes according to the Convention on International Trade of Endangered Species of Wild Fauna and Flora (CITES), thus their international trade is regulated by non-detriment finding (NDF) procedures. The authors critically assessed BrazilÕs regulations for NDF procedures for Arapaima using IUCNÕs checklist for making NDFs, and found that those regulations cannot ensure the sustainability of Arapaima populations. Arapaima are among the largest fishes in the world, migrate short distances among several floodplain habitats, and are very vulnerable to fishing during spawning. They are threatened mainly by overfishing. The fishery is largely unregulated because government regulations on size, season, and even moratoriums on capture have been very poorly enforced. Arapaima remain poorly understood and the taxonomy and geographical distribution of the genus remain uncertain. There are no data on catch levels or status of wild populations, although available information suggests they are in decline. BrazilÕs NDF procedures for specimens originating in the wild are inadequate as they rely on Ôtechnical opinion reportsÕ, which do not necessarily require scientific evidence. Furthermore, BrazilÕs NDF procedures exempt the need for NDF reports on ÔcaptiveÕ specimens; however, ÔcaptiveÕ specimens originating in the wild and raised in captivity can be exported because regulations do not specify that they must be Ôcaptive-bredÕ. Six suggestions are offered to improve the reliability of NDF procedures for Arapaima in Brazil, emphasizing the utility of participatory monitoring and adaptive harvesting to strengthen much needed harvest control capacity in other tropical fisheries.

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“…To guide the elaboration of control rules and management policies to foster the conservation of biodiversity and natural resources, 2. To indicate adequate interventions and timely actions in the fisheries of pirarucu currently promoted in the Amazon (Viana et al, 2004 and2007) to avoid serious disasters, 3. To detect possible deviations in the current natural environment due to unexpected or hidden perturbations that may affect the populations of this species.…”

Section: Discussionmentioning

confidence: 99%

Population Dynamics Modeling of Arapaima gigas

2010

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Pirarucu (Arapaima gigas) has been of the most important natural fishing resources of the Amazon region. Due to its economic importance, and the necessity to preserve the species hand, field research concerning the habits and behavior of the pirarucu has been increasing for the last 20 years. The aim of this paper is to present a mathematical model for the pirarucu population dynamics considering the species peculiarities, particularly the male parental care over the offspring. The solution of the dynamical systems indicates three possible equilibrium points for the population. The first corresponds to extinction; the third corresponds to a stable population close to the environmental carrying capacity. The second corresponds to an unstable equilibrium located between extinction and full use of the carrying capacity. It is shown that lack of males' parental care closes the gap between the point corresponding to the unstable equilibrium and the point of stable non-trivial equilibrium. If guarding failure reaches a critical point the two points coincide and the population tends irreversibly to extinction. If some event tends to destabilize the population equilibrium, as for instance inadequate parental care, the model responds in such a way as to restore the trajectory towards the stable equilibrium point avoiding the route to extinction. The parameters introduced to solve the system of equations are partially derived from limited but reliable field data collected at the Mamirauá Sustainable Development Reserve (MSDR) in the Brazilian Amazonian Region. KEY WORDS: Pirarucu (Arapaima gigas), population dynamics, Mamirauá, Mathematical Modeling Modelagem da Dinâmica Populacional de Arapaima gigas RESUMOPirarucu (Arapaima gigas) tem sido um dos mais importantes recursos pesqueiros naturais da Amazônia. Devido à sua importância econômica, por um lado, e a necessidade de preservar a espécie, por outro lado, o domínio da investigação relativa a hábitos e comportamento do pirarucu tem sido crescente nos últimos 20 anos. O objetivo deste trabalho é apresentar um modelo matemático para a dinâmica populacional do pirarucu considerando as peculiaridades da espécie, particularmente o cuidado parental do macho sobre seus descendentes. A solução dos sistemas dinâmicos indicaram três possíveis pontos de equilíbrio para a população. O primeiro corresponde à extinção; o terceiro corresponde a uma população estável próxima da capacidade suporte do ambiente. O segundo corresponde a um equilíbrio instável localizado entre a extinção e a capacidade suporte do ambiente. Foi mostrado que a falta do cuidado parental de machos aproxima o ponto que corresponde ao equilíbrio instável e o ponto de equilíbrio estável não trivial. Se a falta de cuidado dos machos alcança um ponto crítico, os dois pontos coincidem e a população tende irreversivelmente à extinção. Os parâmetros introduzidos para resolver o sistema de equações foram derivados parcialmente de limitados, mas confiáveis dados de campo coletados na Reserva de Desenvolvimento S...

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9. Economic Incentives for Sustainable Community Management of Fishery Resources in the Mamirauá Sustainable Development Reserve, Amazonas, Brazil

Cited by 14 publications

References 0 publications

Food consumption as an indicator of the conservation of natural resources in riverine communities of the Brazilian Amazon

Food consumption as an indicator of the conservation of natural resources in riverine communities of the Brazilian Amazon

Assessing CITES non-detriment findings procedures forArapaimain Brazil

Population Dynamics Modeling of Arapaima gigas

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