scholarly journals Efficiency of playback for assessing the occurrence of five bird species in Brazilian Atlantic Forest fragments

2006 ◽  
Vol 78 (4) ◽  
pp. 629-644 ◽  
Author(s):  
Danilo Boscolo ◽  
Jean Paul Metzger ◽  
Jacques M.E. Vielliard
Keyword(s):  
Atlantic Forest ◽  
Species Abundance ◽  
Bird Species ◽  
Early Morning ◽  
Forest Fragments ◽  
Bird Songs ◽  
Forest Reserve ◽  
Eastern Brazil ◽  
One Year ◽  
Pyriglena Leucoptera

Playback of bird songs is a useful technique for species detection; however, this method is usually not standardized. We tested playback efficiency for five Atlantic Forest birds (White-browed Warbler Basileuterus leucoblepharus, Giant Antshrike Batara cinerea, Swallow-tailed Manakin Chiroxiphia caudata, Whiteshouldered Fire-eye Pyriglena leucoptera and Surucua Trogon Trogon surrucura) for different time of the day, season of the year and species abundance at the Morro Grande Forest Reserve (South-eastern Brazil) and at thirteen forest fragments in a nearby landscape. Vocalizations were broadcasted monthly at sunrise, noon and sunset, during one year. For B. leucoblepharus, C. caudata and T. surrucura, sunrise and noon were more efficient than sunset. Batara cinerea presented higher efficiency from July to October. Playback expanded the favourable period for avifaunal surveys in tropical forest, usually restricted to early morning in the breeding season. The playback was efficient in detecting the presence of all species when the abundance was not too low. But only B. leucoblepharus and T. surrucura showed abundance values significantly related to this efficiency. The present study provided a precise indication of the best daily and seasonal periods and a confidence interval to maximize the efficiency of playback to detect the occurrence of these forest species.

scholarly journals The importance of riparian forest for the maintenance of bird species richness in an Atlantic Forest remnant, southern Brazil

2007 ◽  
Vol 24 (4) ◽  
pp. 1078-1086 ◽  
Author(s):  
Luiz dos Anjos ◽  
Graziele H. Volpato ◽  
Edson V. Lopes ◽  
Patrícia P. Serafini ◽  
Fabíola Poletto ◽  
...  
Keyword(s):  
Atlantic Forest ◽  
Riparian Forest ◽  
Bird Species ◽  
Southern Brazil ◽  
Forest Types ◽  
Forest Reserve ◽  
Bird Species Richness ◽  
Upland Forest ◽  
Point Counts ◽  
Forest Remnant

We compared the composition and guild structure of bird communities of riparian and upland forest in an Atlantic forest reserve, the Godoy State Park (GP), in northern Paraná State, southern Brazil. Unlimited distance point counts were sampled monthly from September-December 2001, along four trails. Two trails in upland forest (TA and TB) were parallel to each other and about 300 m apart. Two trails in riparian forest (TC and TD) were along the Apertados River, about 100 m away from the river. A total of 145 species were recorded: 81 species were recorded in both upland and riparian forests, 19 species were recorded only in upland forest and 45 species were recorded exclusively in riparian forest. Among the 81 species occurring in both forest types, 18 species had significantly higher numbers of contacts in the riparian forest while only 8 species had significantly higher numbers of contacts in the upland forest. Taking into account the contacts numbers of the species the large frugivores guild was closely associated to the upland forest, while bamboo and vine-tangles insectivore, canopy insectivores, edge omnivores, ground omnivore and midstory insectivores were those more closely related to the riparian forest.

Comparative range use by three Atlantic Forest understorey bird species in relation to forest fragmentation

2008 ◽  
Vol 24 (3) ◽  
pp. 291-299 ◽  
Author(s):  
Miriam M. Hansbauer ◽  
Ilse Storch ◽  
Rafael G. Pimentel ◽  
Jean Paul Metzger
Keyword(s):  
Forest Fragmentation ◽  
Site Fidelity ◽  
Bird Species ◽  
Home Ranges ◽  
Sensitive Species ◽  
Forest Patches ◽  
Range Use ◽  
Use Patterns ◽  
Eastern Brazil ◽  
Pyriglena Leucoptera

Abstract:In this paper, we report on range use patterns of birds in relation to tropical forest fragmentation. Between 2003 and 2005, three understorey passerine species were radio-tracked in five locations of a fragmented and in two locations of a contiguous forest landscape on the Atlantic Plateau of São Paulo in south-eastern Brazil. Standardized ten-day home ranges of 55 individuals were used to determine influences of landscape pattern, season, species, sex and age. In addition, total observed home ranges of 76 individuals were reported as minimum measures of spatial requirements of the species. Further, seasonal home ranges of recaptured individuals were compared to examine site fidelity.Chiroxiphia caudata, but notPyriglena leucopteraorSclerurus scansor, used home ranges more than twice as large in the fragmented versus contiguous forest. Home range sizes ofC. caudatadiffered in relation to sex, age, breeding status and season. Seasonal home ranges greatly overlapped in bothC. caudataand inS. scansor. Our results suggest that one response by some forest bird species to habitat fragmentation entails enlarging their home ranges to include several habitat fragments, whereas more habitat-sensitive species remain restricted to larger forest patches.

scholarly journals Avian Reporting Rates in Chugcheongnam Province, South Korea Depend on Distance from Forest Edge, Size of Trees, and Size of Forest Fragments

Forests ◽  
2019 ◽  
Vol 10 (5) ◽  
pp. 364
Author(s):  
Jang ◽  
Seol ◽  
Chung ◽  
Sagong ◽  
Lee
Keyword(s):  
South Korea ◽  
Size Structure ◽  
Species Abundance ◽  
Bird Species ◽  
Forest Edge ◽  
Forest Area ◽  
Forest Fragments ◽  
Bird Abundance ◽  
Forest Condition ◽  
Abundance And Diversity

Forests provide bird communities with various resources, including food and habitats. Thus, forest attributes, such as size, structure, and species composition, influence the distribution and dynamics of bird species. This study was conducted to examine the association between forest condition, bird species abundance, and diversity within Chungcheongnam Province, South Korea. Zero-inflated binomial regression models were used to analyze a total of 1646 sampling points of abundance and diversity. Forest area, distance to forest edge, and tree size class were selected as covariates. Negative associations between forest area and overall bird abundance and species richness were indicated, whereas distance to forest edge was not a significant factor. This insignificance may be attributed to the relatively small, fragmented, and homogenous forest areas across the studied region. Results for individual bird species indicated that six out of the 35 major bird species had significant associations to the forest edge and three species showed a preference for the interior of the forest. The results of this study imply that other factors, such as food availability and biotic interaction, are more important when determining habitat preference in a relatively homogenous area with a long history of human disturbance.

Dynamics of the bird communities in two fragments of Atlantic Forest in São Paulo, Brazil

Biologia ◽  
2017 ◽  
Vol 72 (8) ◽  
Author(s):  
Renata M. Vianna ◽  
Reginaldo J. Donatelli ◽  
Raphael Whitacker ◽  
Rafael M. Martins ◽  
Guilherme Sementili-Cardoso
Keyword(s):  
Atlantic Forest ◽  
Deciduous Forest ◽  
Diversity Index ◽  
Bird Species ◽  
Bird Communities ◽  
Forest Fragments ◽  
Point Counts ◽  
Wiener Diversity Index ◽  
Evenness Index

AbstractBirds can be used as bioindicators to evaluate the quality of a habitat. The objective of this study was to record richness and abundance of bird communities in two semi-deciduous forest fragments in Brazil (Olavo Egydio Setubal – OES; and Igurê – IGR). A subsequent analysis and comparison of the avifauna structure in each of the fragments were made including previous studies in the same areas. Point counts methodology was chosen for each fragment along 12 months. The results showed the occurrence of a total of 129 bird species for both areas. Although we registered 102 species for each site, Shannon-Wiener diversity index and Pielou’s evenness index, respectively, were slightly higher in OES (

Use of space by the marsupial Micoureus demerarae in small Atlantic Forest fragments in south-eastern Brazil

1999 ◽  
Vol 15 (3) ◽  
pp. 279-290 ◽  
Author(s):  
Alexandra Dos Santos Pires ◽  
Fernando Antonio Dos Santos Fernandez
Keyword(s):  
Home Range ◽  
Breeding Season ◽  
Atlantic Forest ◽  
Reproductive Season ◽  
Home Ranges ◽  
Forest Fragments ◽  
Population Densities ◽  
Metapopulation Structure ◽  
Eastern Brazil ◽  
Short Period

The spatial patterns presented by the marsupial Micoureus demerarae were studied through capture–mark–recapture in two small Atlantic Forest fragments (areas 7.1 and 8.8 ha). The study took place from March 1995 to August 1997. Considering all captures of each individual, males did not have larger home ranges within the fragments than did females. A negative correlation was found between home range sizes and population densities. For males, home ranges overlapped often, and were larger during the breeding season. For females, home ranges did not overlap except for a short period when there were many individuals present, and home range sizes were not significantly larger in the breeding season. Five movements between the two forest fragments were detected, across 300 m of open vegetation. All the movements were performed by males during the reproductive season. M. demerarae in the small fragments therefore displays a metapopulation structure, although possibly an atypical one where only males disperse.

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 Myxobiota of the Brazilian Atlantic Forest: species on oil palm tree (Elaeis guineensis, Arecaceae)

Rodriguésia ◽  
2010 ◽  
Vol 61 (4) ◽  
pp. 575-583 ◽  
Author(s):  
Clebson Firmino da Silva ◽  
Laise de Holanda Cavalcanti
Keyword(s):  
Atlantic Forest ◽  
Oil Palm ◽  
Elaeis Guineensis ◽  
Species Abundance ◽  
Palm Tree ◽  
Forest Fragments ◽  
Brazilian Atlantic Forest ◽  
Forest Species ◽  
Palm Trees ◽  
Ecological Reserve

Abstract Elaeis guineensis Jacq. (Arecaceae), the oil palm tree, serves as a phorophyte for many different groups of organisms, someof whichhelp decompose organic matter comingfromthe organs of the tree itself or fromremainsof other plants retained in leaf sheaths. To study the myxobiota of E. guineensis, we examined living and dead trunks, leaves, bracts and inflorescences in the Gurjaú Ecological Reserve, in the township of Cabo de Santo Agostinho, Pernambuco, Brazil. Incidence and species abundance were determined in three Atlantic forest fragments. The reported species are listed herein, followed the known distribution of each species in Brazil, and which of them occur on palm trees. All of the subclasses and five orders were recorded and 22 species were added to the list of myxomycetes associated with oil palm trees in Brazil. The highest incidence value was recorded on dead leaves. Ceratiomyxa fruticulosa (O. F. Müll.) T. Macbr., Arcyria cinerea (Bull.)Pers. and Physarum compressum Alb.& Schwein. werethe most commonspecies, while Hemitrichia serpula (Scop.) Rostaf. ex Lister showed the highest levels of abundance and incidence, thus confirming its preference for the substrates provided by palm trees.

scholarly journals The magnitude and extent of edge effects on vascular epiphytes across the Brazilian Atlantic Forest

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Edicson Parra-Sanchez ◽  
Cristina Banks-Leite
Keyword(s):  
Atlantic Forest ◽  
Edge Effects ◽  
Forest Cover ◽  
Species Abundance ◽  
Conservation Strategy ◽  
Suitable Habitat ◽  
Forest Fragments ◽  
Brazilian Atlantic Forest ◽  
Vascular Epiphytes ◽  
Epiphyte Communities

Abstract Edge effects are ubiquitous landscape processes influencing over 70% of forest cover worldwide. However, little is known about how edge effects influence the vertical stratification of communities in forest fragments. We combined a spatially implicit and a spatially explicit approach to quantify the magnitude and extent of edge effects on canopy and understorey epiphytic plants in the Brazilian Atlantic Forest. Within the human-modified landscape, species richness, species abundance and community composition remained practically unchanged along the interior-edge gradient, pointing to severe biotic homogenisation at all strata. This is because the extent of edge effects reached at least 500 m, potentially leaving just 0.24% of the studied landscape unaffected by edges. We extrapolated our findings to the entire Atlantic Forest and found that just 19.4% of the total existing area is likely unaffected by edge effects and provide suitable habitat conditions for forest-dependent epiphytes. Our results suggest that the resources provided by the current forest cover might be insufficient to support the future of epiphyte communities. Preserving large continuous ‘intact’ forests is probably the only effective conservation strategy for vascular epiphytes.

scholarly journals Orchid bees (Hymenoptera, Apidae, Euglossini) are seasonal in Seasonal Semideciduous Forest fragments, southern Brazil

2019 ◽  
Vol 59 ◽  
pp. e20195907 ◽  
Author(s):  
Cleiton Margatto ◽  
Vinicius Ortega Berno ◽  
Rodrigo Barbosa Gonçalves ◽  
Luiz Roberto Ribeiro Faria Jr.
Keyword(s):  
Species Abundance ◽  
Late Summer ◽  
Circular Statistics ◽  
Forest Fragments ◽  
Southern Brazil ◽  
Semideciduous Forest ◽  
Orchid Bees ◽  
Eulaema Nigrita ◽  
One Year ◽  
Seasonal Semideciduous Forest

Seasonal fluctuations in the abundance of orchid bees have already been reported. The variations in population dynamics may be expected to occur in more predictable and pronounced manners in environments with a clear distinction between rainy and dry seasons, where climatic variables are regarded to be good predictors of populational patterns. The main goal of this paper is to investigate the seasonality of males of orchid bees in fragments of Seasonal Semideciduous Forest in southern Brazil. Data comprise bait samples from five one-year periods on four forest fragments. The seasonality of species abundance was tested with circular statistics. Results suggest two phenological patterns, one for Eufriesea violacea (Blanchard), Eulaema nigrita Lepeletier and Euglossa cordata (Linnaeus), whose abundances are concentrated in late spring and early-middle summer and another for Euglossa fimbriata Moure with a tendency to be collected in middle-late summer and early autumn. These patterns are discussed, as well the possible driven factors, (i) the species life cycle and nesting behavior, (ii) synchrony with resource, and (iii) climate. We can postulate an important impact of climate change in local euglossine assemblage due to the small populations and marked seasonality.

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