The return of giant otter to the Baniwa Landscape: A multi-scale approach to species recovery in the middle Içana River, Northwest Amazonia, Brazil

Pimenta, Natalia Camps; Gonçalves, André Luís Sousa; Shepard, Glenn H.; Macedo, Valêncio W.; Barnett, Adrian A.

doi:10.1016/j.biocon.2018.06.015

Cited by 13 publications

(8 citation statements)

References 41 publications

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“…Recovering: Brazil (Amanã Lake; Lima et al, 2014b); Içana River (Pimenta, Gonçalves, et al, 2018); Peru (Manu River; Groenendijk et al, 2014); Yavarí‐Mirín and Yavarí rivers (Recharte & Bodmer, 2009); Bolivia (Northern La Paz; Ayala, Wallace, Viscarra, & Jurado, 2015)…”

Section: Population Status and Trendsmentioning

confidence: 99%

“…Owing to their biology and behaviour, P. brasiliensis is more susceptible to persecution by fishers and hunters than L. longicaudis, whose populations persisted at low densities during this period (Pimenta, Antunes, et al, 2018). Since international trade restrictions and conservationist efforts were implemented in the mid-1970s, P. brasiliensis populations have shown signs of recovery in many parts of their range (Lima, Marmontel, & Bernard, 2014b;Pimenta, Gonçalves, Shepard, Macedo, & Barnett, 2018;Recharte & Bodmer, 2009), although in some regions this species is still considered extinct or nearly so, or with declining population trends (Groenendijk et al, 2015).…”

Section: Fishing and Harvesting Of Aquatic Resources/hunting And Collecting Of Terrestrial Animals: Intentional Usementioning

confidence: 99%

“…Araguaia River (Araújo & da Silva, 2014) Tocantins River (Paschoalini et al, 2020) Unknown Decline continent-wide. Variable trends along Amazon Basin, with some recovering populations (Groenendijk et al, 2015) Recovering: Brazil (Amanã Lake; Lima et al, 2014b); Içana River (Pimenta, Gonçalves, et al, 2018); Peru (Manu River; Groenendijk et al, 2014); Yavarí-Mirín and Yavarí rivers (Recharte & Bodmer, 2009); Bolivia (Northern La Paz; Ayala, Wallace, Viscarra, & Jurado, 2015) Declining: Peru (Madre de Dios, outside PAs; Mendoza et al, 2017)…”

Section: Inia Araguaiaensismentioning

confidence: 99%

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Conservation of Amazonian aquatic mammals

Brum

Rosas-Ribeiro

Amaral³

et al. 2021

Aquatic Conservation

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Aquatic mammals worldwide are highly threatened in freshwater ecosystems where they are affected by direct human activities (e.g. hunting) as well as indirect human alteration of freshwater ecosystems (e.g. dams, mining activity). Although aquatic mammals of the Amazon Basin are experiencing many growing threats, little is known about the escalating impacts on them, current limitations in protection mechanisms, and possible strategies to ensure their conservation. This study synthesizes the available information on Amazonian aquatic mammals, including the ecological characteristics of these species, key threats, population status and conservation prospects. Amazonian aquatic mammals comprise seven species – Inia geoffrensis, Inia boliviensis, Inia araguaiaensis, Sotalia fluviatilis, Trichechus inunguis, Pteronura brasiliensis and Lontra longicaudis – which are characterized by low reproductive rates and keystone ecosystem roles. These species are endangered mainly by biological resource use, natural ecosystem modifications, energy production and mining, and climate change. Although information is sparse, there is evidence that these threats are inducing population declines of Inia spp., and hindering the recovery of populations of P. brasiliensis. Protection mechanisms for these species mostly include national and international laws and agreements, legislation governing environmental licensing and protected areas. Each of these protection mechanisms, however, has limited capacity to protect Amazonian aquatic mammals, largely because they are poorly enforced, lack transnational coordination or require population trend data that do not exist. Reversing the current state of affairs for Amazonian aquatic mammals requires an integrated research and policy approach that, at a minimum, substantially increases the present capacity to monitor their population responses to human impacts, establishes effective enforcement of existing legislation and prevents further impacts from hydropower development. To implement such an approach, information on the ecology of these species is necessary to create public and scientific awareness.

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Section: Population Status and Trendsmentioning

confidence: 99%

Section: Fishing and Harvesting Of Aquatic Resources/hunting And Collecting Of Terrestrial Animals: Intentional Usementioning

confidence: 99%

Section: Inia Araguaiaensismentioning

confidence: 99%

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Conservation of Amazonian aquatic mammals

Brum

Rosas-Ribeiro

Amaral³

et al. 2021

Aquatic Conservation

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“…We implemented a multi‐scale approach to assess the most appropriate response scale for analysis of habitat variables (Macdonald et al, 2019; Pimenta, Gonçalves, et al, 2018), subsequently specified as predictors in a resource selection function (RSF; Manly et al, 2002) which examined used and available habitat for giant otters within oxbow lakes. All areas inside lakes were considered available habitat for giant otters, because they constitute part of group territories (Groenendijk, Duplaix, et al, 2015).…”

Section: Methodsmentioning

confidence: 99%

High‐resolution drone imagery reveals drivers of fine‐scale giant otter habitat selection in the land‐water interface

Valladares

Pardo²,

Chiaverini

et al. 2022

Conservat Sci and Prac

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Neotropical freshwater habitats are particularly sensitive to degradation by human activity. Piscivorous semi‐aquatic freshwater megafauna inhabit both the terrestrial and aquatic mediums and thus may be good indicators of wetland habitat quality. However, the drivers of their space use at the terrestrial and aquatic landscape levels are not well understood. We studied the spatial behavior and habitat use of giant otters in Madre de Dios, Peru, inhabiting areas with variable levels of protection. We combined unmanned aerial vehicle (UAV) and satellite images to develop different terrestrial and water‐associated land cover variables. We tested the influence of these predictors on giant otter habitat use at multiple spatial scales, comparing used and available locations. Giant otters favored bank areas with dense forest canopy cover. In the aquatic medium, giant otters showed positive selection for open water and fallen logs and avoided floating vegetation. These findings may be explained by preference for optimal fish habitat to maximize foraging yield and bank areas that provide more cover from predators and higher quality denning locations. Variables developed from UAV images outperformed satellite‐derived variables. Despite recent signs of deforestation in lake banks in unprotected areas, spatial model predictions indicated that unprotected oxbow lakes did not differ in their habitat suitability from protected freshwater habitats. Management implications of our findings include identification of factors driving habitat suitability to guide policy and decisions regarding protection or restoration of oxbow lake ecosystems to support giant otter populations. In addition, we demonstrate that UAVs have value in complementing satellite‐derived images and providing a cost‐effective methodology to assess habitat quality for semi‐aquatic species at the land‐water interface.

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“…Indigenous and other forest peoples participated in market activities that reduced animal populations to the point of local extinction in some regions in the mid-twentieth century (Antunes et al 2016). Yet, while some populations have recovered from commercial hunting, Indigenous understandings of this process may rely on cosmological and shamanic, as much as material, perceptions about the restoration of human-animal relationships (Pimenta et al 2018).…”

Section: Cosmologies Worldviews and Knowledge Systems: Implications F...mentioning

confidence: 99%

Capítulo 10: Interconexiones críticas entre la diversidad cultural y biológica de los pueblos y ecosistemas Amazónicos

Athayde¹,

Shepard²,

Cardoso³

et al. 2022

Relatório De Avaliação Da Amazônia 2021

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This chapter explores the Amazon’s biocultural diversity, focusing on IPLCs’ worldviews, knowledge systems, livelihood strategies, and governance regimes. It synthesizes the main social and political processes that have led to the formal recognition of IPLCs’ lands and/or territories across the Amazon. The chapter highlights IPLCs’ critical role in using, shaping, conserving, and restoring Amazonian ecosystems and biodiversity, despite historic ongoing processes including violence, displacement, and conflicts between conservation and development agendas.

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The return of giant otter to the Baniwa Landscape: A multi-scale approach to species recovery in the middle Içana River, Northwest Amazonia, Brazil

Cited by 13 publications

References 41 publications

Conservation of Amazonian aquatic mammals

Conservation of Amazonian aquatic mammals

High‐resolution drone imagery reveals drivers of fine‐scale giant otter habitat selection in the land‐water interface

Capítulo 10: Interconexiones críticas entre la diversidad cultural y biológica de los pueblos y ecosistemas Amazónicos

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