Multi-taxa Surveys: Integrating Ecosystem Processes and User Demands

Magnusson, William E.; Lawson, Ben E.; Baccaro, Fabrício Beggiato; Castilho, Carolina V.; Castley, J. Guy; Costa, Flávia; Drucker, Debora Pignatari; Franklin, Elizabeth; Lima, Albertina P.; Luizão, Regina C. C.; Mendonça, Fernando Pereira de; Pezzini, Flávia Fonseca; Schietti, Juliana; Toledo, José Júlio de; Tourinho, Ana Lúcia; Verdade, Luciano Martins; Hero, Jean‐Marc

doi:10.1007/978-3-642-54751-5_12

Cited by 18 publications

(17 citation statements)

References 38 publications

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“…Six active Harpy Eagle breeding territories were mapped on this region, two during the terrestrial surveys at RAPELD modules (Magnusson et al, 2005(Magnusson et al, , 2013 We distinguished two main habitat types around the six breeding territories, two (Nest 1 and Nest 2) that are outside the hydroelectric dam direct influence, in contrast to the other four (Nests 3, 4, 5 and 6), which are under direct influence of the reservoir and had the vegetation suppressed, in three case, 100% removed (Nests 4, 5, 6) ( Figure 1). …”

Section: Study Areamentioning

confidence: 99%

“…The RAPELD method spatially standardizes the sampling of biological assemblages over large areas, and minimizes variation in the environmental factors within plots (Magnusson et al, 2005(Magnusson et al, , 2013. Furthermore, the systematic distribution of plots in the landscape allows unbiased estimates of distribution, abundance and biomass of species that can have detectability near 100% at each site, and standardizes effort for species that are not 100% detectable, which facilitates comparisons between sites (Magnusson et al, 2005(Magnusson et al, , 2013.…”

Section: Estimation Of Food Availabilitymentioning

confidence: 99%

“…Furthermore, the systematic distribution of plots in the landscape allows unbiased estimates of distribution, abundance and biomass of species that can have detectability near 100% at each site, and standardizes effort for species that are not 100% detectable, which facilitates comparisons between sites (Magnusson et al, 2005(Magnusson et al, , 2013. …”

Section: Estimation Of Food Availabilitymentioning

confidence: 99%

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Resource availability and diet in Harpy Eagle breeding territories on the Xingu River, Brazilian Amazon

Aguiar‐Silva

Junqueira²,

Sanaiotti

et al. 2015

Braz. J. Biol.

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In the Tapajos-Xingu interfluve, one of the largest birds of prey, the Harpy Eagle, is under intense anthropogenic pressure due to historical and recent reductions in forest cover. We studied prey availability and use by Harpy Eagle on six breeding territories on the low-and mid-Xingu River, between 2013 and 2015. We evaluated food resource availability using the environmental-surveys database from two methods: terrestrial surveys (RAPELD method) and fauna rescue/flushing before vegetation suppression for the Belo Monte Hydroelectric Complex construction. Harpy Eagle diet was identified by prey remains sampled around six nest trees. Eighteen species of mammals, birds and reptiles comprised the prey items. Most prey species were sloths, primates and porcupines, which have arboreal habits and are found in forested areas, but two species, hoatzin and iguana, are usually associated with riverine habitats. The proportion of prey from each species predated on the nest best studied was different from estimated availability (χ 2 = 54.23; df = 16; p < 0.001), however there was a positive correlation (r s = 0.7; p < 0.01) between prey species consumed and abundance available, where the predation was more on species more abundant. Continuous monitoring of the Harpy Eagle diet at these nests could evidence changes in the assemblage of prey species available for Harpy Eagles, due to changes in the seasonal flood pulse of the Xingu River to be caused by the operation of the hydroelectric dam, and changes in habitat features by forest reduction around breeding territories. We believe that it is important to consider the protection of remnants of forested areas in the landscape matrix surrounding the breeding territories to maintain the food resource availability and allow all pairs to successfully reproduce.Keywords: Behavioral ecology, Harpia harpyja, predator, mammals, Xingu River. Disponibilidade e consumo de presas por harpia no entorno de territórios de nidificação no rio Xingu, Amazônia Oriental BrasileiraResumo O interflúvio Tapajós-Xingu, um dos centros de endemismo da Amazônia, onde habita uma das mais poderosas aves de rapina, a harpia, é também alvo de intensa pressão antrópica com reduções históricas da cobertura florestal. Analisamos a disponibilidade de vertebrados e o consumo de presas por harpia em seis territórios de reprodução no Rio Xingu, entre 2013 e 2015. A disponibilidade de recursos alimentares foi baseada nos dados de amostragens por dois métodos: levantamentos terrestres pelo método RAPELD e resgate/afugentamento da fauna antes da supressão da vegetação para construção de infra-estrutura para o Complexo Hidrelétrico Belo Monte. As espécies de presas consumidas pela harpia foram identificadas a partir de vestígios coletados em seis ninhos. Dezoito espécies de mamíferos, aves e répteis compuseram a dieta no baixo e médio Rio Xingu, com maior proporção de preguiças, macacos e porcos-espinhos, incluindo duas espécies (Opisthocomus hoazin e Iguana iguana) associadas aos hábitats criados por rios. A...

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Section: Study Areamentioning

confidence: 99%

Section: Estimation Of Food Availabilitymentioning

confidence: 99%

Section: Estimation Of Food Availabilitymentioning

confidence: 99%

See 1 more Smart Citation

Resource availability and diet in Harpy Eagle breeding territories on the Xingu River, Brazilian Amazon

Aguiar‐Silva

Junqueira²,

Sanaiotti

et al. 2015

Braz. J. Biol.

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“…Each plot was 250 m long and 40 m wide and systematically spaced plots followed the topographic contour to minimize internal heterogeneity in soil properties and drainage. Riparian plots follow the stream gradient, which is very shallow in this region (Magnusson et al 2014 . Nets remained open between 1800 and 0000 h, and were checked every 15 min.…”

Section: Methodsmentioning

confidence: 79%

“…Riparian plots follow the stream gradient, which is very shallow in this region (Magnusson et al . ).…”

Section: Methodsmentioning

confidence: 99%

Subtle changes in elevation shift bat‐assemblage structure in Central Amazonia

Capaverde

Pereira

Tavares³

et al. 2018

Biotropica

Self Cite

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The distribution patterns of animal species at local scales have been explained by direct influences of vegetation structure, topography, food distribution, and availability. However, these variables can also interact and operate indirectly on the distribution of species. Here, we examined the direct and indirect effects of food availability (fruits and insects), vegetation clutter, and elevation in structuring phyllostomid bat assemblages in a continuous terra firme forest in Central Amazonia. Bats were captured in 49 plots over 25‐km² of continuous forest. We captured 1138 bats belonging to 52 species with 7056 net*hours of effort. Terrain elevation was the strongest predictor of species and guild compositions, and of bat abundance. However, changes in elevation were associated with changes in vegetation clutter, and availability of fruits and insects consumed by bats, which are likely to have had direct effects on bat assemblages. Frugivorous bat composition was more influenced by availability of food‐providing plants, while gleaning‐animalivore composition was more influenced by the structural complexity of the vegetation. Although probably not causal, terrain elevation may be a reliable predictor of bat‐assemblage structure at local scales in other regions. In situations where it is not possible to collect local variables, terrain elevation can substitute other variables, such as vegetation structure, and availability of fruits and insects.

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Standardized Sampling Methods and Protocols for Harvestman and Spider Assemblages

Tourinho

Lo-Man-Hung

2020

Measuring Arthropod Biodiversity

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Multi-taxa Surveys: Integrating Ecosystem Processes and User Demands

Cited by 18 publications

References 38 publications

Resource availability and diet in Harpy Eagle breeding territories on the Xingu River, Brazilian Amazon

Resource availability and diet in Harpy Eagle breeding territories on the Xingu River, Brazilian Amazon

Subtle changes in elevation shift bat‐assemblage structure in Central Amazonia

Standardized Sampling Methods and Protocols for Harvestman and Spider Assemblages

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