Panorama da araneofauna de fragmentos florestais em Salvador, Bahia, Brasil

Melo, Tércio da Silva; Andrade, Alessandra Rodrigues Santos de; Benati, Kátia Regina; Peres, Marcelo Cesar Lima; Días, Marcelo Alves

doi:10.13102/scb82

Cited by 5 publications

(7 citation statements)

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“…A baixa abundância de Araneidae e Tetragnathidae se deve ao fato dessas aranhas normalmente habitarem o extrato médio das florestas (Candiani et al 2005). Do mesmo modo, a baixa abundância também pode ser atribuída ao método utilizado ("pitfall trap"), voltado para a coleta de aranhas epígeas, mas também a ausência de vegetação secundária e terciária (Melo et al 2011).…”

Section: Aranhas De Solo Em Fortaleza Cearáunclassified

Aranhas epígeas de um fragmento de mata em área urbana em Fortaleza, Ceará, Brasil

Azevedo

Menezes

Barbosa

et al. 2017

PECEN

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A adaptação das aranhas aos diversos tipos de ambientes e suas relações com as comunidades vegetais existentes, as colocam como peças-chaves nos ecossistemas florestais e excelentes organismos bioindicadores devido à sensibilidade aos efeitos da urbanização e fragmentação de ecossistemas. Visando inventariar e investigar a riqueza da fauna de aranhas de solo de um fragmento de mata antropizado, utilizou-se 50 “pitfalls trap” (número total de amostras = 600), durante 12 meses no período entre 2010–2011. Um total de 1238 indivíduos foi coletado, os quais estiveram distribuídos em 51 espécies pertencentes a 18 famílias, das quais Zodariidae e Lycosidae foram as mais abundantes, e Salticidae e Theridiidae as com maior riqueza. Observou-se ainda um alto percentual de espécies raras (“Singletons e Doubletons”). A tendência de não estabilização dos estimadores de riqueza e a relação da predição de espécies coletadas e esperadas indicam que a área precisa de uma melhor amostragem, visando melhor conhecimento da biodiversidade existente e contribuindo para o desenvolvimento para a preservação e conservação da biodiversidade local.Palavras chave: Araneofauna, aracnídeos, ecossistemas, urbanização.Epigeal spiders in a forest fragment in an urban area of the city of Fortaleza, Ceará, BrazilAbstract: Spiders are indicators of environment quality due fact of been sensible to environment changes. Their adaptions among the environment and their relations between vegetal communities make them have a special role in forest ecosystems. However, this relation makes spiders susceptible to effects of urban process and to defloration and ecosystem fragmentation process. A spider fauna survey was developed using 50 “pitfall traps”, annual sample process begun in 2010 and finished in 2011 (total samples = 600) in an urbanized patch. A total of 1238 individuals were collected, constituting 51 species belonged to 18 families which Zodariidae and Lycosidae were most abundant, and Salticidae and Theridiidae were the richest families. It´s also observed many rare species (Singletons and Doubletons). The richness estimators didn´t exhibit a trend do exhibit an asymptote and the relation between collected species and estimated species, suggesting more samples process also suggests a necessity of develop politics to preserve the local biodiversity.Key words: Araneofauna, arachnids, ecosystems, urbanization.

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Section: Aranhas De Solo Em Fortaleza Cearáunclassified

Aranhas epígeas de um fragmento de mata em área urbana em Fortaleza, Ceará, Brasil

Azevedo

Menezes

Barbosa

et al. 2017

PECEN

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“…Studies performed (using different methodologies and sampling time) in Atlantic Forest fragments inserted in urban centers recorded: 170 species in Salvador (Melo et al 2011), 166 species in João Pessoa , 151 species in Recife (Peres et al 2007) and 46 species in São Paulo (Candiani et al 2005). A survey conducted in a fragment of Atlantic Forest in the RMS, but outside the urban matrix, found 130 species (Pinto-Leite et al 2008).…”

Section: Spidersmentioning

confidence: 99%

“…This group of spiders are among the richest spider families in the world (Platnick 2013), and particularly for non-natural areas or disturbed environments, the pattern is maintained (Candiani et al 2005, Peres et al 2007, Melo et al 2011.…”

Section: Spidersmentioning

confidence: 99%

Ants (Formicidae) and Spiders (Araneae) listed from the Metropolitan Region of Salvador, Brazil

Melo¹,

Peres²,

Chavari³

et al. 2014

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We present an ant and spider species list from five localities of the Metropolitan Region of Salvador (MRS). The MRS is placed in an Atlantic Forest area classified as dense broadleaf forest, considered to be of high biological importance and priority for conservation. We determined 198 species of ants (8 of these are considered to be synanthropic and/or exotic), distributed across nine subfamilies. We determined 164 species of spiders (14 of them being synanthropic and/or exotic), distributed across thirty families. Therefore, this survey shows that the urban environment of the MRS still harbors a large number of native fauna species.

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“…These remnants of native vegetation are important habitats for the maintenance and conservation of these assemblages of ground spiders, since despite being located in an urban matrix and thus susceptible to anthropic pressures, these areas can conserve structural characteristics of the original natural habitat (Fernández et al 2019), constituting refuges of fundamental importance for the conservation of regional biodiversity (e.g. Candiani et al 2005, Nogueira et al 2006, Haddad et al 2011, Melo et al 2011, Patucci et al 2018, Samu et al 2018).…”

Section: Urban Forest Fragmentsmentioning

confidence: 99%

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

et al. 2020

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Forest fragments in urban areas comprise important habitats for a wide variety of species, however, conservationist policies for their maintenance and conservation are still incipient. This study examined the richness and abundance of the ground-spider assemblage in five forest fragments, with areas ranging between 18.5 and 103.98 ha, in the urban perimeter of Sinop, northern Mato Grosso State, southern Amazon region of Brazil. Sampling was carried out using the mini-Winkler extractor and pitfall traps in the dry (July) and rainy (November) seasons of 2017. All fragments were characterized in relation to the area and the Index of Biotic Integrity (IBI), to assess the effect of these variables on richness and abundance of soil spider assemblage. A total of 653 spiders were sampled, corresponding to 25 families and 52 species. Salticidae, Theridiidae, Lycosidae, Linyphiidae, Oonopidae and Symphytognathidae were the most abundant families (63.3% of the total sample). The assemblage was characterized by the dominance of hunting spiders (393 ind.; 60.2%) over web-building spiders (260 ind.; 39.8%). Greater spider abundance and richness was obtained during the rainy season (517 ind.; 79.2%; 41 spp.) as compared with the dry season (136 ind.; 20.8%; 24 spp.). Only 13 species occurred in dry and rainy season. Two species were recorded for the first time in the Amazon region, namely, Anapistula aquytabueraRheims & Brescovit, 2003 (Symphytognathidae) and Opopaea concolor (Blackwall, 1859) (Oonopidae). Species richness was not affected by IBI and area of fragment. Although the statistical model is not significant, species richness increases slightly with IBI and area of fragment. Similarly, abundance of spiders was not affected by IBI and area of fragment. Regardless of the area size, all evaluated forest fragments showed a low and regular IBI, demonstrating that these habitats have suffered with the pressures inherent from the urban perimeter, including the constant expansion of human occupation as well as misuse by the population. Nonetheless, these same fragments revealed considerable richness of species of ground spiders and can thus be categorized as important habitats for the maintenance of regional biodiversity. Therefore, action strategies must be set out to ensure their conservation.

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Panorama da araneofauna de fragmentos florestais em Salvador, Bahia, Brasil

Cited by 5 publications

References 0 publications

Aranhas epígeas de um fragmento de mata em área urbana em Fortaleza, Ceará, Brasil

Aranhas epígeas de um fragmento de mata em área urbana em Fortaleza, Ceará, Brasil

Ants (Formicidae) and Spiders (Araneae) listed from the Metropolitan Region of Salvador, Brazil

Ground spiders (Arachnida, Araneae) associated with urban forest fragments in southern Amazon

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