Distribution of frogs in riparian areas of an urban forest fragment in Central Amazonia

Tsuji-Nishikido, Bruno M.; Menin, Marcelo

doi:10.1590/s1676-06032011000200007

Cited by 11 publications

(15 citation statements)

References 35 publications

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“…The total number of species in all sites (29) was similar to that found in studies carried out in urban forest fragments and human-impacted sites in Brazilian Amazonia (Estupiñán and Galatti 1999;Tsuji-Nishikido and Menin 2011;Venâncio et al 2014). However, the number was greater than that found in a pristine site of terra firme forest in Rio Preto da Eva, some 110 km west of our study area, where complementary methods (active, passive, diurnal and nocturnal samplings) resulted in the record of 23 species (Ilha and Dixo 2010).…”

Section: Discussionsupporting

confidence: 80%

“…Tocher 1998;Tocher et al 2001). Few studies have analyzed Amazonian anuran diversity in urban forest fragments (Knispel and Barros 2009;Tsuji-Nishikido and Menin 2011;Venâncio et al 2014), or compared anuran diversity in pristine forests and areas with varying degrees of anthropogenic impact (Estupiñán and Galatti 1999;Bernarde and Macedo 2008;Silva and Silva 2010). A decrease in anuran species richness and composition has been reported in highlyimpacted areas, due to changes in rainfall, temperature and humidity that resulted in reduced availability of breeding sites (Estupiñán and Galatti 1999;Bernarde and Macedo 2008).…”

Section: Introductionmentioning

confidence: 99%

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Anuran diversity in urban and rural zones of the Itacoatiara municipality, central Amazonia, Brazil

et al. 2019

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Few studies in the Amazon region have evaluated anuran diversity in urban forest fragments or in areas with differing degrees of anthropogenic impact. We determined the composition and abundance of the anurofauna in urban and rural sites within the municipality of Itacoatiara in central Amazonia, Brazil. Specimens were sampled from January 2012 to May 2013 in 10 urban sites and five rural sites. A total of 1,538 anurans (930 in rural sites and 608 in urban sites) were recorded, belonging to 29 species in five families. Species richness was higher in rural sites, with 10 exclusive species. All species found in urban sites were also found in rural sites, however, species abundance varied considerably between the habitats. Sampling-and individualbased rarefaction curves showed a tendency toward stabilization of species richness only in the urban sites. We concluded that the anuran assemblages in the urban sites are depauperate due to the absence of many species associated to pristine terra firme or várzea and igapó forests. Habitat loss and quality degradation in urban landscapes are the main factors threatening amphibian diversity. The anuran assemblages in our study areas were similar to those recorded in other Amazonian habitats. Conservation measures involving anurans in this region should consider the preservation of habitat mosaics, including both pristine terra firme, várzea and igapó forests. Diversidade de anuros nas zonas urbana e rural de Itacoatiara, Amazônia central, Brasil RESUMOPoucos estudos avaliaram a diversidade de anuros em fragmentos florestais urbanos ou em áreas com diferentes graus de impacto antrópico na Amazônia. Neste estudo foi determinada a composição e abundância de anuros em áreas urbanas e rurais no município de Itacoatiara, na Amazônia central, Brasil. Anuros foram amostrados entre janeiro de 2012 e maio de 2013 em 10 locais na área urbana e cinco na área rural. Um total de 1.538 indivíduos (930 na área rural e 608 na área urbana) foram registrados, compreendendo 29 espécies e cinco famílias. A área rural apresentou maior riqueza de espécies, com 10 espécies exclusivas. Todas as espécies identificadas na área urbana também foram encontradas na área rural, mas a abundância das espécies entre ambas áreas variou consideravelmente. Curvas de rarefação por amostragem e por número de indivíduos tenderam à estabilização na riqueza de espécies somente na área urbana. Concluímos que a comunidade de anuros na área urbana está empobrecida devido à ausência de muitas espécies associadas à ambientes inalterados de florestas de terra firme, várzea e igapó. A degradação da qualidade e a perda de habitat nas paisagens urbanas são os principais fatores que ameaçam a diversidade de anfíbios. A comunidade de anuros registrada neste estudo foi similar às de outros habitats na Amazônia. Medidas de conservação envolvendo anuros nesta região devem considerar a preservação de um mosaico de habitats que inclua áreas naturais de floresta de terra firme, várzea e igapó. PALAVRAS-CHAVE: composição de espécies, ...

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Anuran diversity in urban and rural zones of the Itacoatiara municipality, central Amazonia, Brazil

et al. 2019

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“…The fragment isolation process began in 1971 when immigrants started a massive occupation of the area due to the attractive employment perspective of the emerging Manaus free-zone industrial district. The complete isolation of the fragment occurred about 20 years ago (Tsuji-Nishikido & Menin, 2011).…”

Section: Study Areamentioning

confidence: 99%

Population structure, fecundity and ecological aspects of freshwater shrimp species (Decapoda, Palaemonidae) of an urban forest fragment in central Amazonia, Brazil

Menin¹,

Almeida²,

Gualberto³

2012

Crustac

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Information about population structure, ecological aspects and reproductive biology of Amazonian freshwater shrimps is scarce in the scientific literature and concentrated in studies conducted in rivers. In this study we present data about species composition, population structure, abundance, fecundity and effects of abiotic factors on the distribution of freshwater shrimps in small streams at an urban forest fragment in Manaus, Central Amazonia, We collected the shrimps using minnowtraps in 12 first-and second-order streams in dry and rainy seasons. We found four species: Macrobrachium ferreirai Kensley & Walker, 1982, Macrobrachium inpa Kensley & Walker, 1982, Macrobrachium nattereri (Heller, 1862 and Pseudopalaemon amazonensis Ramos-Porto, 1979, First order streams had a higher number of species. Adults and juveniles of all species and ovigerous females were found in the majority of the sampling events. Males were more abundant and larger than females in all species of Macrobrachium. All species had a few, large eggs, Tbe abundance of M. nattereri was affected by stream size and temperature. The population structure of the studied species was different from those in other studies on shrimp populations in Central Amazonia and other regions of Brazil, indicating effects of samphng methods and the structure and size of water bodies on the population structure in different regions. The presence of ovigerous females in all sampling periods indicates continuous reproduction. RESUMOInformaçôes sobre a estrutura populacional, biologia reprodutiva e aspectos ecológicos de camaröes de agua doce da Amazonia sao raras e concentradas em estudos realizados em grandes corpos d'água. No presente estudo, nosso objetivo foi avahar a composiçâo e a abundancia das especies, a estruturapopulacional, a fecundidade e os efeitos de fatores abióticos sobre a distribuiçâo de camaröes em pequeños riachos de um fragmento florestal urbano em Manaus, Amazonia Central, )

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“…2002). Several environmental factors related Pristimantis species to the habitat structure (e.g., leaf litter depth, vegetation density, and basal area) are important for abundance and richness of anurans (including Pristimantis) in the leaf litter in Amazonian tropical forests (Pearman 1997, Menin et al 2007, Van Sluys et al 2007, Blair and Doan 2009, Tsuji-Nishikido and Menin 2011. Little is known about effect of the presence or absence of bamboo that might provide an additional microhabitat for frogs, on anuran community composition (Blair and Doan 2009 …”

Section: López-rojas Et Almentioning

confidence: 99%

Influence of habitat structure on Pristimantis species (Anura: Craugastoridae) in a bamboo-dominated forest fragment in southwestern Amazonia

2015

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PristimantisStructural and determinate factors for the composition of assemblages of species are diverse. Two theories attempt to explain the pattern of species composition in assemblies using different approaches-i.e., Niche Theory and Neutral Theory. Anurans have complex responses to habitat structure. Species of Pristimantis are good indicators for conservation because they are organisms with direct development. The effect of habitat structure on species of Pristimantis in a bamboo-dominated remnant forest located in southwestern Amazonia is analyzed herein. Active visual and auditory searches in 10 plots of the Biodiversity Research Program (PPBio) were conducted between November 2012 and May 2013. Four hundred and sixty individuals Pristimantis altamazonicus, P. diadematus, P. fenestratus, P. reichlei, and P. skydmainus. Neither spatial distance nor the structure of the habitat of the plots affected the composition of Pristimantis Pristimantis, P. reichlei, the occurrence of P. skydmainus cm and the occurrence of P. diadematus decreased relative to increased canopy cover. Pristimantis diadematus and P. skydmainus were the most restricted species in terms of habitat and were especially susceptible to bamboo density.: anurans, bamboo density, habitat structure, Neutral Theory, Niche Theory, northern Brazil, probability of occurrence.

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Distribution of frogs in riparian areas of an urban forest fragment in Central Amazonia

Cited by 11 publications

References 35 publications

Anuran diversity in urban and rural zones of the Itacoatiara municipality, central Amazonia, Brazil

Anuran diversity in urban and rural zones of the Itacoatiara municipality, central Amazonia, Brazil

Population structure, fecundity and ecological aspects of freshwater shrimp species (Decapoda, Palaemonidae) of an urban forest fragment in central Amazonia, Brazil

Influence of habitat structure on Pristimantis species (Anura: Craugastoridae) in a bamboo-dominated forest fragment in southwestern Amazonia

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