scholarly journals Habitat fragmentation and primate conservation in the Atlantic Forest of eastern Minas Gerais, Brazil

Oryx ◽  
1995 ◽  
Vol 29 (3) ◽  
pp. 192-196 ◽  
Author(s):  
Stephen F. Ferrari ◽  
Vânia H. Diego
Keyword(s):  
Atlantic Forest ◽  
Minas Gerais ◽  
Howler Monkey ◽  
Forest Fragments ◽  
Private Land ◽  
Forest Patches ◽  
Eastern Brazil ◽  
Forest Remnants ◽  
Privately Owned

Reduced to a tiny fraction of its original area, much of the Atlantic Forest habitat remaining in eastern Brazil is distributed in small, isolated patches on private land. The potential role of these fragments in the conservation of the region's primate fauna is poorly understood. As part of a study of buffy-headed marmosets Callithrix flavicepsin Minas Gerais, forest remnants were visited in order to evaluate this potential. Marmosets were observed in one-third of the sites and may exist in up to 60 per cent of forest patches in the region. A second threatened primate, the brown howler monkeyAlouatta fusca,may occur in one-quarter of the sites visited. The muriquiBrachyteles arachnoideswas not encountered. Overall, the survey suggests that, with appropriate management, privately owned forest fragments may play an increasingly important role in the conservation of the Atlantic Forest's fauna in this and other regions.

scholarly journals Species richness and relative abundance of birds in natural and anthropogenic fragments of Brazilian Atlantic forest

2004 ◽  
Vol 76 (2) ◽  
pp. 429-434 ◽  
Author(s):  
Luiz dos Anjos
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Relative Abundance ◽  
Feeding Habits ◽  
Species Number ◽  
Fragmented Landscape ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Forest Patches ◽  
Forest Remnants

Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment). However, these tendencies were different, when considering the relative abundance data: the trunk insectivores presented the highest value in the smallest patch while the lowest relative abundance was in the smallest remnant. In the naturally fragmented landscape, time permitted that the loss of some species of trunk insectivores be compensated for the increase in abundance of other species. In contrast, the remnants essentially represented newly formed islands that are not yet at equilibrium and where future species losses would make them similar to the patches.

Exposure of small mammals to ticks and rickettsiae in Atlantic Forest patches in the metropolitan area of Recife, North-eastern Brazil

Parasitology ◽  
2012 ◽  
Vol 139 (1) ◽  
pp. 83-91 ◽  
Author(s):  
FILIPE DANTAS-TORRES ◽  
FILIPE MARTINS ALÉSSIO ◽  
DANIEL BARRETO SIQUEIRA ◽  
JEAN-FRANÇOIS MAUFFREY ◽  
MARIA FERNANDA V. MARVULO ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Small Mammals ◽  
Rural Areas ◽  
Forest Fragments ◽  
Forest Patches ◽  
Tick Density ◽  
Eastern Brazil ◽  
High Prevalence ◽  
North Eastern ◽  
Forest Strata

SUMMARYBetween December 2007 and March 2009, small mammals were captured in 6 Atlantic Forest patches in Brazil. We assessed tick-host associations and whether they differ among forest strata, sites, seasons, and host age classes or between sexes. Moreover, we assessed the exposure of animals to Rickettsia spp. In total, 432 animals were captured and 808 ticks were found on 32·9% of them. Significant differences were found among host species, collection sites, and forest strata; microhabitat preference was a strong risk factor for tick infestation. The highest tick density rates were recorded in forest fragments settled in rural areas; 91·3% of the ticks were collected from animals trapped in these forest fragments. A high prevalence (68·8%) of antibodies to Rickettsia spp. was detected among animals. This study suggests that disturbed Atlantic Forest fragments provide an environment for ticks and small mammals, which are highly exposed to rickettsiae. It also indicates that forest patches settled in rural areas are usually associated with higher small mammal diversity as well as with higher tick density rates.

scholarly journals Are orchid bees at risk? First comparative survey suggests declining populations of forest-dependent species

2013 ◽  
Vol 73 (2) ◽  
pp. 367-374 ◽  
Author(s):  
A Nemésio
Keyword(s):  
Atlantic Forest ◽  
Anthropogenic Disturbances ◽  
The Other ◽  
Orchid Bees ◽  
Orchid Bee ◽  
Disturbed Areas ◽  
Eastern Brazil ◽  
Forest Remnants ◽  
Declining Populations ◽  
Comparative Survey

The two largest Atlantic Forest remnants in the state of Espírito Santo, eastern Brazil, namely ‘Reserva Biológica de Sooretama’ (REBIO Sooretama) and ‘Reserva Natural Vale’ (RNV), were surveyed for their orchid-bee faunas. Seventeen scent baits were used to attract orchid-bee males. Three-thousand, two hundred and twenty-five males belonging to 24 species were actively collected with insect nets during 100 hours in March, April and December, 2009. In comparison with a previous study in the same area twelve years before, it is evident that the abundance of all forest-dependent orchid bees analysed declined around 50%, and it was statistically significant (P = 0.022) for Euglossa marianae Nemésio, 2011, the most sensitive to anthropogenic disturbances of all Atlantic Forest orchid bees. On the other hand, the abundance of populations of species tolerant to open or disturbed areas rose. Possible explanations are discussed.

scholarly journals The orchid-bee faunas (Hymenoptera: Apidae) of 'Parque Nacional do Monte Pascoal', 'Parque Nacional do Descobrimento' and three other Atlantic Forest remnants in southern Bahia, eastern Brazil

2013 ◽  
Vol 73 (2) ◽  
pp. 437-446 ◽  
Author(s):  
A Nemésio
Keyword(s):  
Atlantic Forest ◽  
Amazon Basin ◽  
First Record ◽  
The State ◽  
Orchid Bees ◽  
Orchid Bee ◽  
Eastern Brazil ◽  
Forest Remnants ◽  
Southern Bahia

The orchid-bee faunas of ‘Parque Nacional do Monte Pascoal’, ‘Parque Nacional do Descobrimento’ and three other Atlantic Forest remnants ranging from 1 to 300 ha in southern Bahia, eastern Brazil, were surveyed. Baits with seventeen different scents were used to attract orchid-bee males. Four thousand seven hundred and sixty-four males belonging to 36 species were actively collected with insect nets during 300 hours from November, 2008 to November, 2009. Richness and diversity of orchid bees found in this study are the highest ever recorded in the Atlantic Forest domain. Eufriesea dentilabris (Mocsáry, 1897) and Eufriesea violacea (Blanchard, 1840) were collected at the ‘Parque Nacional do Monte Pascoal’, the first record of these species for the state of Bahia and the northernmost record for both species. Females Exaerete dentata (Linnaeus, 1758) were also collected at ‘Parque Nacional do Monte Pascoal’ and old records of Eufriesea aeneiventris (Mocsáry, 1896) in this area makes this site the richest and most diverse concerning its orchid-bee fauna in the entire Atlantic Forest and similar to areas in the Amazon Basin.

scholarly journals The effect of fragmentation on spider richness (Arachnida: Araneae) in montane semideciduous seasonal forest

2021 ◽  
Vol 12 (4) ◽  
Author(s):  
Flávio Eduardo Vilas Boas Júnior ◽  
Amanda Da Silva Ferreira ◽  
Marcos Magalhães De Souza
Keyword(s):  
Species Richness ◽  
Atlantic Forest ◽  
Minas Gerais ◽  
Fragmentation Process ◽  
Natural Environments ◽  
Forest Fragments ◽  
Spider Species ◽  
Semideciduous Seasonal Forest ◽  
Agricultural Areas ◽  
Environmental Functions

The fragmentation process that has altered natural environments has been widely discussed, as it causes changes in communities and compromises different environmental functions. In this sense, this study was based on the evaluation of fragmentation on araneofauna of semideciduous seasonal forest fragments, phytophysiognomy belonging to the Atlantic Forest. The study was conducted in three fragments in the municipality of Inconfidentes, southern Minas Gerais, from April 2014 to March 2015. The results showed that there is a similarity in the composition of spider species among the sampled fragments and that the size of the fragment is positively correlated with species richness. Our data show that smaller fragments must be preserved and that agricultural areas maintain the integrity of adjacent forest areas to benefit from the predation dynamics that spiders exert on pests that affect plantations.

Ticks on small mammals from an ecotone region impacted by rural activities in Brazil

2021 ◽  
Vol 26 (2) ◽  
pp. 427-437
Author(s):  
Rafael Quirino Moreira ◽  
Vanessa Do Nascimento Ramos ◽  
Adriane Suzin ◽  
Diego Garcia Ramirez ◽  
Paulo Ricardo De Oliveira Roth ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Small Mammals ◽  
Mus Musculus ◽  
Tick Species ◽  
Rattus Rattus ◽  
Riparian Forests ◽  
Forest Fragments ◽  
Cerrado Biome ◽  
Didelphis Albiventris

We evaluated the role of communities of small mammals from three distinct areas in a region of Cerrado mixed with Atlantic Forest remains for maintenance of tick fauna. Thirty-nine marsupials (Gracilinanus agilis, n = 34; Marmosa paraguaiana, n = 4; Didelphis albiventris, n = 1) and 33 rodents (Oecomys cleberi, n = 10; Nectomys squamipes, n = 4; Calomys tener, n = 4; Hylaeamys megacephalus, n = 4; Akodon sp., n = 3; Rattus rattus, n = 3; Cerradomys subflavus, n = 2; Mus musculus, n = 2; Rhipidomys macrurus, n = 1) were captured. Solely G. agilis and the four rodent species (N. squamipes, R. macrurus, C. subflavus and Akodon sp.) were infested. Four tick species were collected (Amblyomma dubitatum, Amblyomma sculptum, Ixodes loricatus and Ornithodoros mimon). A. dubitatum was the most abundant tick species on hosts. Capture success was higher in the dry season, but the infestation was similar in both seasons. Forested habitats, particularly riparian forests, resulted in higher number of hosts and ticks collected (from hosts and from vegetation), compared to pastures and anthropized sites. The association between C. subflavus and I. loricatus and between A. dubitatum and N. squamipes observed here is the first recorded in Cerrado biome. Areas with more patches of forest, including the Atlantic Forest fragments, tend to present a richest community of small mammals and associated ticks.

Izecksohniella puri sp. n., a new Brazilian cricket species (Orthoptera: Grylloidea: Phalangopsidae) from Atlantic Forest remnants

Zootaxa ◽  
2003 ◽  
Vol 244 (1) ◽  
pp. 1 ◽  
Author(s):  
CARLOS FRANKL SPERBER ◽  
ALINE ROCHA ◽  
CRISTIANO LOPES-ANDRADE ◽  
ALEJO MESA
Keyword(s):  
Atlantic Forest ◽  
Minas Gerais ◽  
Minas Gerais State ◽  
Forest Remnants ◽  
Coloration Patterns

Izecksohniella puri sp. n., a new cricket species from Atlantic Forest remnants, Minas Gerais State, Brazil, is here described, based on 52 specimens. Diagnostic to this species is the following combination of characters: males with both forewings coriaceous, conspicuous metanotal glands below the forewings, apices of genital projections enlarged. The description includes male, female, and nymph characters. Photographs of habitus, genitalia details and male cariotype, as well as drawings of coloration patterns and genitalia arrangement are provided. Similarities to Cacruzia bahiana and Vanzoliniella sambophilla are discussed.

scholarly journals The context of the size and distance of Atlantic Forest fragments in a small city in Southern Brazil

2019 ◽  
Vol 41 ◽  
pp. e46936
Author(s):  
Matheus Bueno Patrício ◽  
José Hilário Delconte Ferreira ◽  
Edivando Vitor do Couto
Keyword(s):  
Atlantic Forest ◽  
Nearest Neighbor ◽  
Diversity Index ◽  
Area Ratio ◽  
Native Vegetation ◽  
Small City ◽  
Forest Fragments ◽  
Forest Remnants ◽  
Significant Area ◽  
The Mean

The Atlantic Forest is highly anthropized, this reduce the areas of native vegetation and impacts the biodiversity of the biome. The objective of this study is to analyze forest remnants with native vegetation characteristics using a free GIS. This analysis takes place using landscape metrics and was based on the supervised vectorization of land use in the municipality of California, PR. The area of the vectored polygons was obtained and a classified, and then the calculation was made with the nearest neighbor index, mean distance observed, Patton diversity index and the perimeter/area ratio of forest fragments. The results show that most of the fragments have an area smaller than 1 ha, the fragments with more significant area (<50 ha) represent more than 16% of the native vegetation area. The small fragments are important to maintain the connectivity, since the withdrawal of these increases the mean distance observed and nearest neighbor index. Most of the fragments are elongated and amorphous in accordance with the perimeter/area ratio and the Patton diversity index respectively, this may demonstrate the fragments may be subject to edge effects. Even with these characteristics, these fragments may be part of what is planned in public policy for preservation in the Atlantic Forest in the state of Paraná. Therefore, even small fragments with little core area are important for maintaining biodiversity, especially in a highly anthropogenic landscape

scholarly journals The erosion of biodiversity and biomass in the Atlantic Forest biodiversity hotspot

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Renato A. F. de Lima ◽  
Alexandre A. Oliveira ◽  
Gregory R. Pitta ◽  
André L. de Gasper ◽  
Alexander C. Vibrans ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Forest Biomass ◽  
Biodiversity Hotspot ◽  
Forest Fragments ◽  
Forest Biodiversity ◽  
Conservation Units ◽  
Field Surveys ◽  
Tropical Biodiversity ◽  
Forest Remnants ◽  
Change Mitigation

AbstractTropical forests are being deforested worldwide, and the remaining fragments are suffering from biomass and biodiversity erosion. Quantifying this erosion is challenging because ground data on tropical biodiversity and biomass are often sparse. Here, we use an unprecedented dataset of 1819 field surveys covering the entire Atlantic Forest biodiversity hotspot. We show that 83−85% of the surveys presented losses in forest biomass and tree species richness, functional traits, and conservation value. On average, forest fragments have 25−32% less biomass, 23−31% fewer species, and 33, 36, and 42% fewer individuals of late-successional, large-seeded, and endemic species, respectively. Biodiversity and biomass erosion are lower inside strictly protected conservation units, particularly in large ones. We estimate that biomass erosion across the Atlantic Forest remnants is equivalent to the loss of 55−70 thousand km2 of forests or US$2.3−2.6 billion in carbon credits. These figures have direct implications on mechanisms of climate change mitigation.

Three new species of Encholirium (Bromeliaceae) from eastern Brazil

Phytotaxa ◽  
2015 ◽  
Vol 227 (1) ◽  
pp. 13 ◽  
Author(s):  
Rafaela Campostrini Forzza ◽  
Elton Leme
Keyword(s):  
New Species ◽  
Atlantic Forest ◽  
Minas Gerais ◽  
South American ◽  
Campos Rupestres ◽  
Espinhaço Range ◽  
The Third ◽  
Eastern Brazil ◽  
Center Of Diversity ◽  
Three New Species

Encholirium is an exclusively Brazilian genus of Bromeliaceae that occurs principally in the South American dry diagonal, with only a few species found on inselbergs within the Atlantic Forest. The center of diversity of the genus falls within the Campos Rupestres of the Espinhaço Range of the state of Minas Gerais, followed by rocky outcrops found within the Caatinga and Cerrado biomes. Three new species are described and illustrated, two of which occur on limestone outcrops in western Bahia (Encholirum splendidum and Encholirium fragae), while the third, Encholirium kranzianum, occurs in the Campos Rupestres of the Espinhaço Range of Minas Gerais.

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