2007
DOI: 10.1080/01650520600935082
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Effects of forest fragmentation on fourCtenusspider populations (Araneae: Ctenidae) in central Amazonia, Brazil

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Cited by 25 publications
(20 citation statements)
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“…While the overall density of Sparassidae (all species combined) was higher in the fragments, that of Ctenidae was significantly higher in continuous forest than in the fragments (REGO et al 2005). A total of 14 ctenid species were recorded in the BDFFP study area, of which Ctenus manauara Höfer, Brescovit & Gasnier, 1994, Ctenus crulsi Mello-Leitão, 1930, Ctenus amphora Mello-Leitão, 1930, and Ctenus villasboasi Mello-Leitão, 1949 were the most abundant (REGO et al 2007). An analysis of the responses of these four species to edge and area effects showed that the latter two species had significantly higher population abundances in continuous forest than in fragments, whereas C. manauara and C. crulsi showed similar abundances in fragmented and non-fragmented habitats (REGO et al 2007).…”
Section: Spidersmentioning
confidence: 99%
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“…While the overall density of Sparassidae (all species combined) was higher in the fragments, that of Ctenidae was significantly higher in continuous forest than in the fragments (REGO et al 2005). A total of 14 ctenid species were recorded in the BDFFP study area, of which Ctenus manauara Höfer, Brescovit & Gasnier, 1994, Ctenus crulsi Mello-Leitão, 1930, Ctenus amphora Mello-Leitão, 1930, and Ctenus villasboasi Mello-Leitão, 1949 were the most abundant (REGO et al 2007). An analysis of the responses of these four species to edge and area effects showed that the latter two species had significantly higher population abundances in continuous forest than in fragments, whereas C. manauara and C. crulsi showed similar abundances in fragmented and non-fragmented habitats (REGO et al 2007).…”
Section: Spidersmentioning
confidence: 99%
“…1) is an intrinsic -albeit unplannedlimitation of the BDFFP design. More recent studies have tried to minimize this problem by establishing control sites in continuous forest areas closer to the fragments (e.g., REGO et al 2007).…”
Section: Leaf-litter Beetlesmentioning
confidence: 99%
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“…No entanto, em 2001 e 2002 os mesmos fragmentos florestais foram novamente amostrados por Rego et al (2007) e foram constatadas que as densidades de duas espécies de Ctenus (C. amphora e C. villasboasi) são significativamente menores nos fragmentos que na floresta contínua. Estes resultados desiguais podem ser atribuídos às diferenças nas épocas de amostragem dos dois estudos e as diferentes condições dos fragmentos nestes diferentes períodos.…”
Section: Discussionunclassified
“…Além disso, Rego et al (2007) mostraram que a densidade de indivíduos no interior da floresta e nas suas bordas não foram significativas para nenhuma das espécies, sugerindo que a queda nas populações de C. amphora e C. villasboasi nos fragmentos deve ter sido causada principalmente pelo isolamento da floresta. Estes resultados observados em conjunto aos do presente estudo reforçam a suposição de que o isolamento das reservas realmente influencia as populações de aranhas Ctenus nestas áreas, mas que o crescimento da floresta secundária ao redor das reservas parece restabelecer, para fatores importantes na ecologia destas aranhas, uma situação semelhante à do seu habitat original.…”
Section: Discussionunclassified