Impact of game hunting by the Kayapó of south-eastern Amazonia: implications for wildlife conservation in tropical forest indigenous reserves

Peres, Carlos A.; Nascimento, Hilton S.

doi:10.1007/978-1-4020-5283-5_16

Cited by 43 publications

(67 citation statements)

References 29 publications

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“…Unfortunately, there are a number of factors that negatively impact avifaunal structures at national, regional and state levels, principally involving the loss and degradation of habitats and over-exploitation of bird populations (Barlow et al 2006;Brooks 2006;BirdLife International 2006García-Moreno et al 2007;BirdLife International 2008;Silveira and Straube 2008) but also including the introduction of exotic species, pollution, natural disasters and road-kills (Barlow et al 2002;Marini and Garcia 2005;Peres and Nascimento 2006;Hengemühle and Cademartori 2008). These (and other) factors leave Brazil with the largest number of species threatened with extinction in the Neotropical region (Collar et al 2007).…”

Section: Introductionmentioning

confidence: 98%

Hunting, use and conservation of birds in Northeast Brazil

et al. 2011

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Brazil has one of the highest avifauna diversities in the world, and many species are used by human populations in many different ways. Capturing wild birds for food, or to raise as pets, or for commercial purposes, together with the loss of habitat, have been the principal causes of population reductions among many species. The present work provides new information about the diversity of wild bird species used in Ceará State (Northeast Brazil) and the techniques used for capturing them, as well as the forces motivating this hunting, the commercial relationships involved, the maintenance of captive species, and the legal and conservation implications of the use of the regional avifauna. A total of 92 wild bird species belonging to 26 families were found to be used as food (39 spp.), for medicinal (3 spp.) and magic-religious (1 spp.) purposes, for commercial ends (46 spp.), or raised as pets (44 spp.), or killed to control their predation on domestic animals (5 spp.). Raising or selling birds is motivated by their singing and/or their natural beauty, with Thraupidae, Icteridae and Emberizidae being the principal families sought after for those purposes. The Family Columbidae has the greatest importance as a food source. Eleven traditional capture techniques (both active and passive) were identified. The commercial value of the birds varied depending on both intra-and inter-specific factors, and the trade in these animals involved both dealers who sold large numbers of individuals at low prices and specialists (''passarinheiros'') who sold just a few domesticated individuals of greater value. Our evaluations of transactions taking place in public markets indicated the probable over-exploitation of a number of species, and these were often imported from other states and countries. In addition to being illegal, the capture of wild birds can cause serious environmental problems that can only be addressed through public policies directed towards education, monitoring and control, alternative sources of income, wildlife management, and ecosystem conservation.

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Section: Introductionmentioning

confidence: 98%

Hunting, use and conservation of birds in Northeast Brazil

et al. 2011

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“…Large-seeded trees are dispersed by fewer and larger-bodied bird and mammal species, and large-bodied animals are especially vulnerable to disturbance (Peres & Nascimento 2006). In addition, forest specialist species are particularly vulnerable to disturbance (Raman 2001;Woltmann 2003).…”

Section: Introductionmentioning

confidence: 98%

Effects of Local Disturbance of Tropical Forests on Frugivores and Seed Removal of a Small‐Seeded Afrotropical Tree

Kirika

Farwig

Böhning‐Gaese

2008

Conservation Biology

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Small-scale, local disturbance of tropical forests, for example from selective logging, is widespread, but its effects on biodiversity and ecosystem function have rarely been studied. In 3 East African tropical rainforests, we investigated the effect of different levels of local forest disturbance on the frugivore community and on tree visitation and fruit removal rates of the small-seeded tree Celtis durandii. We quantified birds and primates in little and heavily disturbed sites, distinguishing between forest specialists, forest generalists, and forest visitors. We quantified frugivorous tree visitors and seed removal rates of C. durandii trees in the same sites. Forest disturbance reduced the species richness and density of the frugivore community and of forest specialists. Frugivorous species and individuals visiting the study trees were reduced significantly, which led to a marginally significant decline in fruit removal by all frugivores and a significant reduction in removal by forest specialists. Reduction in fruit removal by forest specialists was not compensated for by increases in removal by forest generalists or visitors. Results did not differ among the 3 rainforests, which suggests they were consistent at a regional scale. So local forest disturbance led to a loss of frugivores and their seed removal services. This suggests that large-seeded tree species and trees with small fruits are losing seed dispersers. Thus, local forest disturbance appears to have a more general negative impact on frugivores and their seed dispersal services than anticipated previously.

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“…Their distributions overlap in many areas, although C. carbonaria occurs in a wider variety of habitats, including open vegetation such as cerrado, whereas C. denticulata seems to be more dependent on humid forests (Jerozolimski 2005). In spite of their wide geographical range, relatively high abundance and their frequent use by many traditional human communities as a food source (Milton 1991;Mena et al 2000;Souza-Mazurek et al 2000;Peres and Nascimento 2006), very little is known about their wild populations (Pritchard and Trebbau 1984;Moskovits 1988). Although fruits seem to constitute an important item in their diets (Moskovits 1998;Josseaume 2002) and the passage through their digestive tract does not seem to negatively affect seed viability (Moskovits 1998), only recently did Strong and Fragoso (2006) and Guzmán and Stevenson (2008) suggest that these two tortoise species may be effective dispersal agents.…”

Section: Introductionmentioning

confidence: 99%

Are tortoises important seed dispersers in Amazonian forests?

2009

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According to most studies on seed dispersal in tropical forests, mammals and birds are considered the main dispersal agents and the role played by other animal groups remains poorly explored. We investigate qualitative and quantitative components of the role played by the tortoise Chelonoidis denticulata in seed dispersal in southeastern Amazon, and the influence of seasonal variation in tortoise movement patterns on resulting seed shadows. Seed shadows produced by this tortoise were estimated by combining information on seed passage times through their digestive tract, which varied from 3 to 17 days, with a robust dataset on movements obtained from 18 adult C. denticulata monitored with radio transmitters and spoon-and-line tracking devices. A total of 4,206 seeds were found in 94 collected feces, belonging to 50 seed morphotypes of, at least, 25 plant genera. Very low rates of damage to the external structure of the ingested seeds were observed. Additionally, results of germination trials suggested that passage of seeds through C. denticulata's digestive tract does not seem to negatively affect seed germination. The estimated seed shadows are likely to contribute significantly to the dispersal of seeds away from parent plants. During the dry season seeds were dispersed, on average, 174.1 m away from the location of fruit ingestion; during the rainy season, this mean dispersal distance increased to 276.7 m. Our results suggest that C. denticulata plays an important role in seed dispersal in Amazonian forests and highlight the influence of seasonal changes in movements on the resulting seed shadows.

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Impact of game hunting by the Kayapó of south-eastern Amazonia: implications for wildlife conservation in tropical forest indigenous reserves

Cited by 43 publications

References 29 publications

Hunting, use and conservation of birds in Northeast Brazil

Hunting, use and conservation of birds in Northeast Brazil

Effects of Local Disturbance of Tropical Forests on Frugivores and Seed Removal of a Small‐Seeded Afrotropical Tree

Are tortoises important seed dispersers in Amazonian forests?

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