A large sample of Leposoma (Squamata, Gymnophthalmidae) from the atlantic forests of Bahia, the status of Leposoma annectans Ruibal, 1952, and notes on conservation

Rodrigues, Miguel Tréfaut; Dixo, Marianna; Accacio, Gustavo Mattos

doi:10.1590/s0031-10492002000500001

Cited by 17 publications

(11 citation statements)

References 4 publications

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“…Only one rare species sampled in forest fragments (Leposoma nanodactylus) was not reported in cabrucas. Although little information is available on the ecology of Gymnophthalmidae in general, the preference of Leposoma scincoides for disturbed habitats such as forest edges, secondary forest and especially cacao groves was reported earlier (Rodrigues et al 2002). These results are in accordance with those reported by Lieberman (1986) and Heinen (1992) for shade cacao plantations in Costa Rica, where the richness and evenness of lizards declined from primary forest to a disturbed site, resulting in an increase in the dominance of some species (like L. sincoides in this study) and the decline of others (such as Enyalius catenatus pictus in this study).…”

Section: Discussionmentioning

confidence: 92%

Ferns, frogs, lizards, birds and bats in forest fragments and shade cacao plantations in two contrasting landscapes in the Atlantic forest, Brazil

et al. 2007

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The traditional shade cacao plantations (cabrucas) of southern Bahia, Brazil, are biologically rich habitats, encompassing many forest-dwelling species. However, a critical question for the conservation management of this specific region, and the highly fragmented Atlantic forest in general, is to what extent the conservation value of cabrucas relies on the presence of primary forest habitat in the landscape. We investigated the relative importance of cabrucas and forests for the conservation of five diverse biological groups (ferns, frogs, lizards, birds and bats) in two contrasting landscapes in southern Bahia, one dominated by forest with some interspersed cabrucas, and one dominated by cabrucas with interspersed forest fragments. The community structure (richness, abundance and diversity) of all biological groups differed between cabrucas and forests, although these differences varied among groups. A high number of forest species was found in the cabrucas. However, there were pronounced differences between the two landscapes with regard to the ability of cabrucas to maintain species richness. Irrespective of the biological group considered, cabrucas located in the landscape with few and small forest fragments supported impoverished assemblages compared to cabrucas located in the landscape with high forest cover. This suggests that a greater extent of native forest in the landscape positively influences the species richness of cabrucas. In the landscape with few small forest fragments interspersed into extensive areas of shade cacao plantations, the beta diversity of birds was higher than in the more forested landscape, suggesting that forest specialist species that rarely ventured into cabrucas were randomly lost from the fragments. These results stress both the importance and the vulnerability of the small forest patches remaining in landscapes dominated by shade plantations. They also point to the need to preserve sufficient areas of primary habitat even in landscapes where land use practices are generally favorable to the conservation of biodiversity.

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Section: Discussionmentioning

confidence: 92%

Ferns, frogs, lizards, birds and bats in forest fragments and shade cacao plantations in two contrasting landscapes in the Atlantic forest, Brazil

et al. 2007

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“…The Brazilian Atlantic rain forests are one of the most endangered biodiversity hotspots in the world (Mittermeier et al ., 1999; Myers et al ., 2000; Rodrigues, Dixo & Accacio, 2002a). Formerly extending along the eastern coast of Brazil for about 5500 km, from the state of Rio Grande do Norte to the state of Rio Grande do Sul, most of the forest has now been cut down; the remainder does not exceed 6% of its original area, and most of this is located in south‐eastern Brazil.…”

Section: Introductionmentioning

confidence: 99%

“…Only a few scattered and relatively small remnant patches remain, and these show different levels of disturbance. Nevertheless, several new species of reptiles and amphibians have been and continue to be described from these areas, some resulting from recent field work (Rodrigues & Borges, 1997; Rodrigues, 1997; Cruz, Caramaschi & Freire, 1999; Freire, 1999; Rodrigues et al ., 2002a, b; Caramaschi & Rodrigues, 2003; Peixoto, Caramaschi & Freire, 2003). Data on these new taxa are helpful to reconstruct the history of these forests by recovery of major biogeographical patterns (Carnaval, 2002; Mustrangi & Patton, 1997; Costa, 2003; Pellegrino et al ., 2005).…”

Section: Introductionmentioning

confidence: 99%

Phylogenetic relationships of a new genus and species of microteiid lizard from the Atlantic forest of north-eastern Brazil (Squamata, Gymnophthalmidae)

Rodrigues

Freire

Pellegrino

et al. 2005

Zoological Journal of the Linnean Society

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A new genus and species of a short limbed and slightly elongate gymnophthalmid lizard is described from the Atlantic rain forests of north-eastern Brazil. The new genus is also characterized by short and stout pentadactyl limbs, presence of prefrontals, absence of frontoparietals, distinctive ear opening and eyelid, two pairs of genials, a distinct collar, smooth, quadrangular, dorsal scales, quadrangular ventrals, fused postfrontal and postorbital bones, and two pairs of sternal ribs. The geographical distribution of the new taxon extends from the state of Rio Grande do Norte to the northern bank of the Rio São Francisco in the state of Alagoas. All specimens were obtained in leaf litter, an observation which agrees with the fossorial habits suggested by the body shape and massive aspect of the head of this species. A phylogenetic analysis based on external morphology, osteology, and molecular data recovered the new lizard as the sister genus to Anotosaura , and Colobosauroides as the sister group to these two.

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“…Microhabitat description.— We reviewed the literature on microhabitat use and distribution for the known regional species (Rand & Humphrey 1968; Crump 1971; Vanzolini 1972, 1974, 1976; Jackson 1978; Vanzolini & Gomes 1979; Vanzolini et al 1980; Rodrigues et al 1987, 2002, 2005; Araujo 1991; Vitt 1991, 1995; Vitt & Colli 1994; Vitt & Carvalho 1995; Freire 1996; Rodrigues 1996; Rocha 1998; Vitt & Zani 1998; Teixeira 2001; Borges‐Nojosa & Camaraschi 2003; Vitt et al 2003a, b; Dias & Rocha 2004; Mesquita et al 2006). Based on these sources and on previous field observations, we decided to measure, in each plot, the availability of the following microhabitat descriptors: low vegetation density, litter cover, number of bromeliads and giant bromeliads, number of fallen trunks, and area of rock surfaces.…”

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confidence: 99%

“…Six endemic lizard species of the Atlantic Rainforest biome and one forest specialist were present at one (but never both) of the reference sites but they were not found in Sapiranga (Table S1). These were the forest gymnophtalmids Dryadosaura nordestina (Rodrigues et al 2005) and Leposoma annectans (Rodrigues et al 2002), the tropidurids Strobilurus torquatus (arboreal forest specialist; Jackson 1978, Rodrigues et al 1987), and Tropidurus hygomi (psammophile; Vanzolini & Gomes 1979), and the heliophile teiid Cnemidophorus abaetensis (Dias & Rocha 2004). Anolis punctatus , known to occur in both the Atlantic and Amazonian forest (Vitt et al 2003a), was not found in Sapiranga.…”

mentioning

confidence: 99%

Passive Restoration in Biodiversity Hotspots: Consequences for an Atlantic Rainforest Lizard Taxocene

Camacho

Rocha

2010

Biotropica

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Long-term conservation in biodiversity hotspots depends on the recovery of communities in secondary forest fragments. In most cases, however, recovery strategies for these areas are based only on passive restoration. It is therefore necessary to determine the efficiency of such strategies. In this study, we assess the efficiency of passive restoration on a 567-ha 28-yr-old fragment of Atlantic Rainforest in Northeastern Brazil. We measured richness, composition, abundance and biomass of a lizard taxocene and also vegetation structure and availability of several microhabitat descriptors in 18 plots of this secondary forest. We then compared them with measures in 29 plots from two neighboring reference sites. Species richness, abundance, biomass and microhabitat descriptors availability inside the secondary fragment did not differ from reference sites. However, composition and vegetation structure showed small differences. Some forest specialist lizards, which should be a focus of conservation efforts in fragmented landscapes of the Atlantic Rainforest, were not found in the fragment and data indicate that this was not due to sampling or a lack of suitable habitat or microhabitat. In the presence of preserved source sites, passive restoration may be a cheap and effective way to recover lizard taxocenes of the Atlantic Rainforest. Some of the species may need to be re-introduced to accelerate the full recovery of original composition of lizard taxocenes in secondary Atlantic Rainforests.Abstract in Portuguese is available at

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A large sample of Leposoma (Squamata, Gymnophthalmidae) from the atlantic forests of Bahia, the status of Leposoma annectans Ruibal, 1952, and notes on conservation

Cited by 17 publications

References 4 publications

Ferns, frogs, lizards, birds and bats in forest fragments and shade cacao plantations in two contrasting landscapes in the Atlantic forest, Brazil

Ferns, frogs, lizards, birds and bats in forest fragments and shade cacao plantations in two contrasting landscapes in the Atlantic forest, Brazil

Phylogenetic relationships of a new genus and species of microteiid lizard from the Atlantic forest of north-eastern Brazil (Squamata, Gymnophthalmidae)

Passive Restoration in Biodiversity Hotspots: Consequences for an Atlantic Rainforest Lizard Taxocene

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