Flood pulse dynamics affects exploitation of both aquatic and terrestrial prey by Amazonian floodplain settlements

Endo, Whaldener; Peres, Carlos A.; Haugaasen, Torbjørn

doi:10.1016/j.biocon.2016.07.006

Cited by 56 publications

(57 citation statements)

References 47 publications

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“…In contrast, fishers are more successful during low water, when fish stocks are concentrated in lakes, rivers, and channels (Endoa et al. ).…”

Section: Discussionmentioning

confidence: 99%

“…; Endoa et al. ). However, greater multiyear fluctuations in water levels such as intensive floods and droughts may cause shifts in wildlife populations in floodplain forests that are greater in intensity and are likely driving both wildlife populations and human resource use.…”

Section: Introductionmentioning

confidence: 97%

“…Populations of major resource species, such as fish, ungulates, and large rodents, depend on the hydrological cycles of river water during dry and wet seasons that characterize the Amazon floodplain (Junk et al 1989;Goulding et al 2003). Thus, indigenous communities living along the Amazon floodplain have developed divergent livelihood strategies to cope with annual fluctuations in water levels (Kvist et al 2001;Endoa et al 2016). However, greater multiyear fluctuations in water levels such as intensive floods and droughts may cause shifts in wildlife populations in floodplain forests that are greater in intensity and are likely driving both wildlife populations and human resource use.…”

Section: Introductionmentioning

confidence: 99%

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Major shifts in Amazon wildlife populations from recent intensification of floods and drought

Bodmer

Mayor

Antúnez

et al. 2018

Conservation Biology

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“…In contrast, fishers are more successful during low water, when fish stocks are concentrated in lakes, rivers, and channels (Endoa et al. ).…”

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 97%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Major shifts in Amazon wildlife populations from recent intensification of floods and drought

Bodmer

Mayor

Antúnez

et al. 2018

Conservation Biology

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“…The water level oscillation induces stark changes in the landscape, flooding extensive terrestrial habitats, modifying aquatic habitat availability, creating seasonal refuges, connecting populations, and influencing the accessibility and impact of commercial fisheries (Junk et al., ). As a result, the flood pulse clearly affects fish behaviour and ecology in multiple ways, with subsequent effects on fisheries yields (Castello, Isaac, & Thapa, ; Endo, Peres, & Haugaasen, ; Fernandes, ). Pirarucu have been used as a model taxon to elucidate fish responses to the prolonged flood pulse phenomenon (Araripe, do Rêgo, Queiroz, Sampaio, & Schneider, ; Castello, ).…”

Section: Introductionmentioning

confidence: 99%

“…As a result, the flood pulse clearly affects fish behaviour and ecology in multiple ways, with subsequent effects on fisheries yields (Castello, Isaac, & Thapa, 2015;Endo, Peres, & Haugaasen, 2016;Fernandes, 1997). Pirarucu have been used as a model taxon to elucidate fish responses to the prolonged flood pulse phenomenon (Araripe, do Rêgo, Queiroz, Sampaio, & Schneider, 2013;Castello, 2008).…”

Section: Introductionmentioning

confidence: 99%

Population recovery, seasonal site fidelity, and daily activity of pirarucu (Arapaima spp.) in an Amazonian floodplain mosaic

2019

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Pirarucu (Arapaima spp.) are the world's largest scaled freshwater fish, reaching 3 m in length and >200 kg in weight. Historical overfishing has devastated populations of this remarkable fish across Amazonian floodplains, but community‐based management programmes are now stimulating the recovery of wild populations. Pirarucu have evolved a unique set of life history traits, some of which have important implications for population management. Individuals exhibit lateral annual migration patterns during the prolonged annual flood pulse, entering flooded forests to reproduce and forage. During this period, although managed fish stocks become less monopolisable by local communities responsible for managing protected lakes, pirarucu can occupy and reproduce in new environments and thus potentially contribute to population recovery. Here, we show a strong pattern of pirarucu (Arapaima cf. gigas) population recovery under community‐based management in an area along the Juruá River, in western Brazilian Amazonia. We show evidence of population recovery even outside formal protected areas, reinforcing the suitability of pirarucu community‐based management as a powerful tool for both biodiversity conservation and the improvement of local livelihoods. We also show pirarucu movements across a floodplain mosaic—including lakes, the main river channel, tributary streams, and flooded forests—during the wet season. Our results support evidence of site fidelity among migrating pirarucu, justifying the high effort invested by local communities in seasonally protecting lakes from poachers and illegal fishers. Finally, restricted daily movement patterns by pirarucu support the suitability of population estimates based on day‐time counts because the chance of double counting is substantially reduced during the day when these counts are conducted. We highlight the strong suitability of this species for community‐based management, since they can: (1) replenish new environments during the wet season through migration and possibly also reproduction; and (2) be efficiently harvested during the dry season, delivering social and ecological benefits at large spatial scales. Positive examples of fisheries management, which align biodiversity conservation and social development, are important for building optimism, and influencing local and international stakeholders. Our study shows how engaging and empowering local communities to help monitor the movement ecology of target species can be an effective strategy to support the sustainable management of aquatic resources in tropical environments.

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Comparative gastrointestinal organ lengths among Amazonian primates (Primates: Platyrrhini)

Jesus

Bizri

et al. 2023

American Journal of Biological Anthropology

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Objectives: The morphological features of the gastrointestinal tract (GIT) in mammals reflect a species' food niche breadth and dietary adaptations. For many wild mammals, the relationship between the structure of the GIT and diet is still poorly understood, for example, the GIT for frugivorous primates is usually classified as unspecialized and homogeneous. Here, we compare the GIT structure of 13 primate species from the three families of extant platyrrhines (Atelidae, Pitheciidae, and Cebidae) in Amazonia, and discuss possible evolutionary adaptations to different diets and trophic niches. Methods:We measured the length of the esophagus, stomach, small intestine, large intestine, cecum, colon, and rectum of the digestive tracts of 289 primate specimens.We determined the allometric relationships of the different tubular organs with the total length of the GIT as a proxy of specimen body size. Allometric parameters were used to establish the quotients of differentiation of every organ for each primate specimen.Results: There was a high differentiation in structure of the digestive organs among genera. Alouatta specimens clearly separated from the other genera based on dissimilarities in gastric, colonic, and rectal quotients, likely linked to the fermentation of plant contents. In contrast, all cebines (Sapajus, Cebus, and Saimiri) and Cacajao species had similar small intestine quotients, which is expected due to their high rates of animal matter consumed.

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Flood pulse dynamics affects exploitation of both aquatic and terrestrial prey by Amazonian floodplain settlements

Cited by 56 publications

References 47 publications

Major shifts in Amazon wildlife populations from recent intensification of floods and drought

Major shifts in Amazon wildlife populations from recent intensification of floods and drought

Population recovery, seasonal site fidelity, and daily activity of pirarucu (Arapaima spp.) in an Amazonian floodplain mosaic

Comparative gastrointestinal organ lengths among Amazonian primates (Primates: Platyrrhini)

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