scholarly journals Habitat use by a tree frog species of Scinax (Amphibia, Hylidae) at an urban forest fragment from south-eastern Brazil

2008 ◽  
Vol 98 (3) ◽  
pp. 412-415
Author(s):  
Conrado A. B. Galdino ◽  
Ronald R. Carvalho Jr. ◽  
Mauren A. V. Noronha e Menezes ◽  
Luciana B. Nascimento
Keyword(s):  
Habitat Use ◽  
Urban Forest ◽  
Species Abundance ◽  
Southeastern Brazil ◽  
Tree Frog ◽  
Forest Fragment ◽  
Eastern Brazil ◽  
Frog Species ◽  
Spatial Niche ◽  
Belo Horizonte

We studied the pattern of habitat use by the tree frog Scinax aff. perereca. Fieldworks were performed from August 1996 to August 1997 at Parque das Mangabeiras, Belo Horizonte, State of Minas Gerais, southeastern Brazil. Calling males were observed in September, October and December 1996, February to April and June 1997. Females were found only in October 1996. Specimens were found perched on vegetation, on the ground or on stones near waterfall. At Parque das Mangabeiras, S. aff. perereca occupied nine types of substrata. The most frequently used substrata were shrubs, stones at the stream edges, and fallen trunks. The pattern of spatial occupation varied among months. Males were found calling in aggregations on the vegetation and spatial niche breadth was related to species abundance.

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

2011 ◽  
Vol 11 (2) ◽  
pp. 63-70 ◽  
Author(s):  
Bruno Minoru Tsuji-Nishikido ◽  
Marcelo Menin
Keyword(s):  
Leaf Litter ◽  
Environmental Variables ◽  
Urban Forest ◽  
Forest Edge ◽  
Forest Fragment ◽  
Riparian Areas ◽  
Central Amazonia ◽  
Edge Distance ◽  
Frog Species ◽  
Stream Size

This study aimed to evaluate how environmental variables (width of valley, stream size, forest edge distance, and leaf-litter depth) affect the abundance and richness of species of frog species in riparian areas of an urban forest fragment in Central Amazonia. The study was conducted at the campus of the Universidade Federal do Amazonas, Manaus, Brazil, between May 2008 and April 2009, when three nocturnal and diurnal samples were taken from ten plots. A total of 17 species belonging to seven families were registered. The number of species recorded per plot varied from seven to 14. We detected a relationship between the edge distance and richness: the plots with lower richness were located near the fragment border. The variables had no significant effect on abundance of each species.

Seasonality and habitat influence on bat assemblage structure in an urban Atlantic Forest remnant from Southeastern Brazil

Mammalia ◽  
2017 ◽  
Vol 81 (3) ◽  
Author(s):  
Roberto Leonan M. Novaes ◽  
Renan F. Souza ◽  
Saulo Felix ◽  
André C. Siqueira ◽  
Rafael S. Laurindo ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Capture Rate ◽  
Species Abundance ◽  
Assemblage Structure ◽  
Southeastern Brazil ◽  
Feeding Guilds ◽  
Forest Fragment ◽  
Historical Processes ◽  
Forest Remnant ◽  
Ombrophilous Forest

AbstractThe Brazilian Atlantic Forest is a severely threatened biodiversity hotspot and many remnants exist only as fragments. In order to understand how bat assemblage structure within a forest fragment surrounded by an urban matrix might respond to seasonality and different habitats, we sampled bats over 39 nights in the forest fragment of Gericinó-Mendanha Massif, Rio de Janeiro State. From February 2006 to January 2010, we captured 874 bats, belonging to 25 species and eight different feeding guilds. Frugivorous species were the most abundant, representing 83.33% of captures, and the gleaning insectivores were the least abundant (1.47%). We did not find changes in bat species composition between seasons, although capture rate was higher in the rainy season. However, we did find significant differences in species abundance between seasons. The habitat influence did not significantly differentiate the assemblages, but species richness was higher in the mature ombrophilous forest. The community composition indicates that this conservation unit is an important remaining fragment for maintaining the diversity and richness of bats, although it is possible that historical processes of environmental exploitation have already resulted in a loss of species.

scholarly journals Floral preferences of a neotropical stingless bee, Melipona quadrifasciata Lepeletier (Apidae: Meliponina) in an urban forest fragment

2006 ◽  
Vol 66 (2a) ◽  
pp. 463-471 ◽  
Author(s):  
Y. Antonini ◽  
R. G. Costa ◽  
R. P. Martins
Keyword(s):  
Plant Species ◽  
Urban Forest ◽  
Flowering Plant ◽  
Forest Fragment ◽  
High Similarity ◽  
Paulo State ◽  
Melipona Quadrifasciata ◽  
Belo Horizonte ◽  
Flowering Plant Species ◽  
Bee Abundance

Species of plants used by Melipona quadrifasciata Lepeletier for pollen and nectar gathering in an urban forest fragment were recorded in Belo Horizonte, Minas Gerais, Brazil. Melipona quadrifasciata visited 22 out of 103 flowering plant species. The plant species belonged mainly to Myrtaceae, Asteraceae, and Convolvulaceae (64% of the visits). Melipona quadrifasciata tended to collect pollen or nectar each time, except for Myrtaceae species, from which both pollen and nectar were collected. Bee abundance at flowers did not significantly correlate to food availability (expressed by flowering plant richness). We found a relatively high similarity (50%) between plant species used by M. quadrifasciata, which was also found in studies carried out in São Paulo State. However, low similarity (17%) was found between the results of this study and those of another done in Bahia State, Brazil.

scholarly journals Benthic macroinvertebrates as bioindicators of water quality in an Atlantic forest fragment

2010 ◽  
Vol 100 (4) ◽  
pp. 291-300 ◽  
Author(s):  
Augusto Oliveira ◽  
Marcos Callisto
Keyword(s):  
Water Quality ◽  
Organic Pollution ◽  
Southeastern Brazil ◽  
Functional Feeding Groups ◽  
Average Score ◽  
Macroinvertebrate Communities ◽  
Forest Fragment ◽  
Freshwater Habitats ◽  
Disturbed Systems ◽  
Belo Horizonte

The objective of this study was to evaluate benthic macroinvertebrate communities as bioindicators of water quality in five streams located in the "Reserva Particular do Patrimônio Natural" (RPPN) Mata Samuel de Paula and its surroundings, in the municipality of Nova Lima near the city of Belo Horizonte, Minas Gerais State, southeastern Brazil. This region has been strongly modified by human activities including mining and urbanization. Samples were collected in the field every three months between August 2004 and November 2005, totaling six samplings in the rainy and dry seasons. This assessment identified one area ecologically altered while the other sampling sites were found to be minimally disturbed systems, with well-preserved ecological conditions. However, according to the Biological Monitoring Work Party (BMWP) and the Average Score Per Taxon (ASPT) indices, all sampling sites had excellent water quality. A total of 14,952 organisms was collected, belonging to 155 taxa (148 Insecta, two Annelida, one Bivalvia, one Decapoda, one Planariidae, one Hydracarina, and one Entognatha). The most abundant benthic groups were Chironomidae (47.9%), Simuliidae (12.3%), Bivalvia (7.5%), Decapoda (6.1%), Oligochaeta (5.2%), Polycentropodidae (3.7%), Hydropsychidae (2.5%), Calamoceratidae (1.8%), Ceratopogonidae (1.7%), and Libellulidae (1.2%). The assessment of the benthic functional feeding groups showed that 34% of the macroinvertebrates were collector-gatherers, 29% predators, 24% collector-filterers, 8% shredders, and 5% scrapers. The RPPN Mata Samuel de Paula comprises diversified freshwater habitats that are of great importance for the conservation of many benthic taxa that are intolerant to organic pollution.

scholarly journals Mortality and diameter growth of lianas in a semideciduous forest fragment in Southeastern Brazil

1999 ◽  
Vol 13 (2) ◽  
pp. 159-165 ◽  
Author(s):  
Julio Antonio Lombardi ◽  
Lívia Godinho Temponi ◽  
Claudia Aparecida Leite
Keyword(s):  
Growth Rates ◽  
Secondary Forest ◽  
Mortality Rates ◽  
Stem Diameter ◽  
Southeastern Brazil ◽  
Diameter Growth ◽  
Forest Fragment ◽  
Semideciduous Forest ◽  
Belo Horizonte ◽  
Population Mortality

This is a 30-month study of mortality rates and diameter growth rates of lianas in a semideciduous forest fragment in Belo Horizonte, Minas Gerais State, Brazil. Results are presented for 484 specimens of lianas, of which 103 experienced individual mortality (21.3% of the sampled population). Mortality varied according to class of stem diameter, but did not vary throughout the months of year, or between seasons or years. Mortality rates were higher than those recorded in other studies, perhaps due to the age of this secondary forest. Stem diameter growth rates were measured for 385 lianas, the survivors after 30 months plus four plants that died just before the final census, and averaged 1.2mm/year, ranging from 0mm/year (Chioccoca alba) to 4.8mm/year (Acacia sp.), significantly slower than the known growth rates in tropical trees in other areas.

scholarly journals Use of space by neotropical marsupial Didelphis albiventris (Didelphimorphia: Didelphidae) in an urban forest fragment

2008 ◽  
Vol 25 (2) ◽  
pp. 214-219 ◽  
Author(s):  
Alex J. de Almeida ◽  
Camila G. Torquetti ◽  
Sônia A. Talamoni
Keyword(s):  
Population Structure ◽  
Sexual Dimorphism ◽  
Home Range ◽  
Habitat Use ◽  
Urban Forest ◽  
Conservation Status ◽  
Forest Fragment ◽  
Mean Size ◽  
The Mean ◽  
Didelphis Albiventris

A population of the Neotropical marsupial Didelphis albiventris (Lund, 1840) living in an urban forest fragment was studied. Population structure and the influence of sex and age on two variables related to habitat use (Daily home range - MCP and Habitat use intensity - UI) obtained by the spool-and-line technique were analysed. There were 20 males and 29 females studied (N = 49). No sexual dimorphism was apparent in adult individuals. There were 16 males and 24 females tracked using the spool-and-line device. There were significant differences found in the mean size of the daily home range, which was greater in adults than in sub-adults. Regarding the habitat use intensity there were also significant differences related to age. There were no significant differences in MCP and UI related to the sex of the individuals. Besides the analyzed factors, the variables related to habitat use are possibly influenced by other factors, especially, the ones related to the conservation status of the fragment.

scholarly journals Diversity and habitat preference of medium and large-sized mammals in an urban forest fragment of southwestern Amazon

2014 ◽  
Vol 104 (2) ◽  
pp. 168-174 ◽  
Author(s):  
Luiz H. M. Borges ◽  
Armando. M. Calouro ◽  
André L. M. Botelho ◽  
Marcos Silveira
Keyword(s):  
Species Composition ◽  
Urban Forest ◽  
Species Abundance ◽  
Brazilian Amazon ◽  
Common Species ◽  
Forest Fragment ◽  
Mammal Species ◽  
Palm Trees ◽  
High Species Richness ◽  
Mammal Diversity

We assessed the species composition and abundance of medium and large-sized mammals in an urban forest fragment in the Brazilian Amazon, and recorded the preference of some species for particular phytophysiognomies. We placed nine transects with 20 sand plots each in three phytophysiognomies: open rainforest with a dominance of bamboos (OFB), open rainforest with palm trees (OFP), and dense rainforest (DF). We calculated species abundance as the number of records/plot.day, in a total of 2,700 plots.day. We recorded twelve mammal species; Sylvilagus brasiliensis (Linnaeus, 1758) and Dasyprocta fuliginosa (Wagler, 1831) were the most abundant. The results differed among phytophysiognomies: DF presented the highest mammal diversity, whereas the species composition of OFP was less similar than that of other phytophysiognomies. Rodents showed higher preference for OFP and Sylvilagus brasiliensis was more abundant in OFB. The study area showed high species richness, with the occurrence of mesopredators, but there was a predominance of common species adaptable to disturbed environments, which reflects the severe isolation degree of the forest fragment and the hunting pressure that is still present.

Modeling cetacean habitat use in an urban coastal area in southeastern Brazil

2020 ◽  
Vol 642 ◽  
pp. 227-240
Author(s):  
L Lodi ◽  
R Tardin ◽  
G Maricato
Keyword(s):  
Habitat Use ◽  
Protected Areas ◽  
Linear Models ◽  
Anthropogenic Activities ◽  
Buffer Zone ◽  
Humpback Whales ◽  
Southeastern Brazil ◽  
Major Influence ◽  
Cetacean Species ◽  
Few Data

Most studies of cetacean habitat use do not consider the influence of anthropogenic activities. We investigated the influence of environmental and anthropogenic variables on habitat use by humpback Megaptera novaeangliae and Bryde’s whales Balaenoptera brydei off the coast of the Brazilian city of Rio de Janeiro. Although there are 2 marine protected areas (MPAs) in this area, few data are available on cetacean habitat use or on the overlap of different cetacean species within these MPAs. Our aim was to evaluate the effectiveness of the MPAs and propose a buffer zone to better protect the biodiversity of the study area. We conducted systematic surveys and developed spatial eigenvector generalized linear models to characterize habitat use by the species in the study area. Habitat use by humpback whales was influenced only by depth, whereas for Bryde’s whales there was the additional influence of anthropogenic variables. For Bryde’s whales, which use the area for feeding, sea surface temperature and the distance to anchorages had a major influence on habitat use. We also showed that neither of the MPAs in the study area adequately protects the hotspots of either whale species. Most of the humpback whale grid cells with high sighting predictions were located within 2 km of the MPAs, while areas of high sighting prediction of Bryde’s whales were located up to 5 km from the MPAs, closer to beaches. Our findings provide important insights for the delimitation of protected areas and zoning of the MPAs.

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