scholarly journals Frugivory and potential of birds as dispersers of Siparuna guianensis

2015 ◽  
Vol 75 (2) ◽  
pp. 300-304 ◽  
Author(s):  
VF. Gonçalves ◽  
AM. Silva ◽  
CQ. Baesse ◽  
C. Melo
Keyword(s):  
Deciduous Forest ◽  
Bird Species ◽  
Feeding Guilds ◽  
Forest Fragments ◽  
Brazilian Cerrado ◽  
Forest Fragment ◽  
Neotropical Tree ◽  
High Consumption ◽  
Dispersal Agent ◽  
Seed Dispersers

Siparuna guianensis is a neotropical tree species, found both on edge and interior of forest fragments, mainly on understory and regeneration areas. The fruit are zoochorous with a sweet aril. This work aims to determine the bird species that eat the fruits of S. guianensis in a semi deciduous forest fragment in Brazilian Cerrado and measure which species have the highest potential as seed dispersers. Seven individuals of S. guianensis were sampled, totaling 69 hours. A hundred and fifty four visits were registered by seven species of birds. Antilophia galeata had the biggest potential as seed dispersal agent. Antilophia galeata, Lanio penicillatus and Dacnis cayana can be important seed dispersers, since they have a high consumption and visitation rate. The consumption of S. guianensis by species of different feeding guilds can be an important strategy for dispersal of plant species in regeneration habitats, raising the chances of an effective dispersal.

scholarly journals Frugivory and seed dispersal of Solanum granuloso-leprosum Dunal (Solanaceae) by birds in deciduous seasonal forest

2016 ◽  
Vol 76 (4) ◽  
pp. 818-823 ◽  
Author(s):  
F. A. F. Jacomassa
Keyword(s):  
Deciduous Forest ◽  
Bird Species ◽  
Rio Grande ◽  
Rio Grande Do Sul ◽  
Forest Fragment ◽  
Fruit Removal ◽  
Feeding Behaviors ◽  
River Region ◽  
Strong Competition ◽  
Uruguay River

Abstract The goal of this study was to identify which bird species consume Solanum granuloso-leprosum fruits and disperse its seeds. 60 hours of focal observations were carried out between April and May 2006 on the edge of a deciduous forest fragment in the Uruguay River region, Rio Grande do Sul state, Brazil. Ten species were observed in total removing 443 fruits. Saltator similis removed 61.8% of the fruits, followed by Tangara sayaca (17.1%), Pipraeidea bonariensis (11.7%), and T. preciosa (6.8%), while the remaining six species accounted for only 2.5% of the fruits removed. Most fruit removal occurred early in the day or mid-afternoon. The most common feeding behaviors were picking (60.7%), followed by stalling (23%) and hovering (16%). Birds flew more than 10 m from the fruit plant in 62% of the removal events. All bird species observed here may be considered potential dispersers of S. granuloso-leprosum, as they moved the seeds away from the mother plant where strong competition and predation are likely to occur. Results also suggest that S. granuloso-leprosum may be useful in ecological restoration programs.

scholarly journals Herpetofauna of Parque Estadual Altamiro de Moura Pacheco: one of the last remnants of seasonal forest in the core region of the Brazilian Cerrado

2018 ◽  
Vol 58 ◽  
pp. e20185851 ◽  
Author(s):  
Werther Pereira Ramalho ◽  
Daniella Pereira Fagundes França ◽  
Vinicius Guerra ◽  
Rosy Marciano ◽  
Nilton Carlos Do Vale ◽  
...  
Keyword(s):  
Protected Areas ◽  
Deciduous Forest ◽  
Core Region ◽  
Basic Knowledge ◽  
Forest Fragments ◽  
Pitfall Traps ◽  
Gallery Forest ◽  
Brazilian Cerrado ◽  
The Core ◽  
Reptile Species

Studies in remnants of semi-deciduous seasonal forest of the Cerrado are needed to fill sampling gaps and improve basic knowledge of biodiversity. This study presents data on the herpetofauna of Parque Estadual Altamiro de Moura Pacheco, one of the last protected areas of seasonal forest in the core region of the Brazilian Cerrado. Fourteen sites were sampled between March 2007 and April 2008 using pitfall traps and active searches. A total of 35 anuran species were recorded, most of which were found in hygrophilous environments near forest fragments, open areas and riparian or gallery forest. A total of 29 reptile species were recorded, most of which were found in semi-deciduous forest and riparian or gallery forest. Fourteen of the amphibians and five of the reptiles are endemic to the Cerrado. The richness of amphibians and reptiles found in Parque Estadual Altamiro de Moura Pacheco is regionally representative, with communities typical of forest environments.

scholarly journals Conservation value of a native forest fragment in a region of extensive agriculture

2000 ◽  
Vol 60 (2) ◽  
pp. 237-247 ◽  
Author(s):  
A. G. CHIARELLO
Keyword(s):  
Deciduous Forest ◽  
Puma Concolor ◽  
Bird Species ◽  
Line Transect ◽  
Native Forest ◽  
Muscovy Duck ◽  
Forest Fragment ◽  
Isolated Populations ◽  
Mammal Species ◽  
Maned Wolf

A survey of mammals and birds was carried out in a semi-deciduous forest fragment of 150 ha located in a zone of intensive agriculture in Ribeirão Preto, State of São Paulo, south-eastern Brazil. Line transect sampling was used to census mammals and birds during six days, totalling 27.8 km of trails and 27.8 hours of observation. Twenty mammal species were confirmed in the area (except bats and small mammals), including rare or endangered species, such as the mountain lion (Puma concolor), the maned wolf (Chrysocyon brachyurus), and the ocelot (Leopardus pardalis). The brown capuchin monkey (Cebus apella) and the black-tufted-ear marmoset (Callithrix penicillata) were found frequently, suggesting high population density in the fragment. Regarding the avifauna, 49 bird species were recorded, most of them typical of open areas or forest edges. Some confirmed species, however, are becoming increasingly rare in the region, as for example the muscovy duck (Cairina moschata) and the toco toucan (Ramphastos toco). The results demonstrate that forest fragment of this size are refuges for native fauna in a region dominated almost exclusively by sugar-cane plantations. Besides faunal aspects, the conservation of these fragments is of great importance for the establishment of studies related to species preservation in the long term, including reintroduction and translocation projects, as well as studies related to genetic health of isolated populations.

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 (

scholarly journals Bird assembly in restinga reforested areas

2020 ◽  
Vol 4 (2) ◽  
pp. 91
Author(s):  
Erich De Freitas Mariano ◽  
Arnaldo Honorato Vieira-Filho ◽  
Gustavo Alves Toledo Da Costa ◽  
Helder Farias Pereira De Araujo ◽  
Malva Isabel Medina Hernandez
Keyword(s):  
Species Richness ◽  
Functional Groups ◽  
Statistical Tests ◽  
Bird Species ◽  
Control Area ◽  
Conservation Strategies ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Different Ages ◽  
The Difference

Fragmentation is one of environmental degradation and reduction of biodiversity causes, including in bird communities, mainly in Atlantic Forest areas. The aim of this study was to evaluate the differences in richness and functional groups structure in the ornitofauna from a Restinga forest fragment and four areas with different ages of reforestation. We selected five forest fragments in a Restinga area in the state of Paraiba. A native fragment (Control Area-AC) and four fragments that have undergone a mining process and present different ages of reforestation (1989, 1997, 2001 and 2003). The avifauna samples occurred in four expeditions between November 2006 and April 2008 and counted with a total effort of 2700 net.m2 per expedition. Statistical tests verified richness differences between studied areas, as well as the composition of their functional groups. In general, 90 bird species were recorded, and the highest reforestation age area presented the highest richness (n = 51 spp.). The species richness comparisons indicated that the difference in the richness between AC and reforested areas is not statistically significant. The similarity analysis indicates that reforested areas share a large amount of species and AC has a great differentiation in composition. This differentiation is explained by the significant presence of frugivorous, nectarivorous, leaf and understory-insectivorous species. Changes in species richness and composition in degraded areas are expected and reforested areas usually have a smaller number of forest-dependent species due to the deficiency of available resources. The recovery of areas by reforestation are important conservation strategies, however there is need for management measures that promote the enrichment of these areas and the availability of resources for species dependent on environments Forest.

scholarly journals Structurally complex farms support high avian functional diversity in tropical montane Ethiopia

2013 ◽  
Vol 29 (2) ◽  
pp. 87-97 ◽  
Author(s):  
Aaron D. Gove ◽  
Kristoffer Hylander ◽  
Sileshi Nemomissa ◽  
Anteneh Shimelis ◽  
Woldeyohannes Enkossa
Keyword(s):  
Bird Species ◽  
Feeding Guilds ◽  
Forest Conversion ◽  
Forest Fragments ◽  
Feeding Guild ◽  
Species Accumulation Curves ◽  
Point Counts ◽  
Forest Sites ◽  
Agricultural Habitat ◽  
Regional Species Pool

Abstract:Of all feeding guilds, understorey insectivores are thought to be most sensitive to disturbance and forest conversion. We compared the composition of bird feeding guilds in tropical forest fragments with adjacent agro-ecosystems in a montane region of south-west Ethiopia. We used a series of point counts to survey birds in 19 agriculture and 19 forest sites and recorded tree species within each farm across an area of 40 × 35 km. Insectivores (~17 spp. per plot), frugivores (~3 spp. per plot) and omnivores (~5 spp. per plot) maintained species density across habitats, while granivores and nectarivores increased in the agricultural sites by factors of 7 and 3 respectively. Species accumulation curves of each guild were equal or steeper in agriculture, suggesting that agricultural and forest landscapes were equally heterogeneous for all bird guilds. Counter to most published studies, we found no decline in insectivore species richness with forest conversion. However, species composition differed between the two habitats, with certain forest specialists replaced by other species within each feeding guild. We suggest that the lack of difference in insectivorous species numbers between forest and agriculture in this region is due to the benign nature of the agricultural habitat, but also due to a regional species pool which contains many bird species which are adapted to open habitats.

Forest fragmentation reduces recruitment of large-seeded tree species in a semi-deciduous tropical forest of southern Mexico

2009 ◽  
Vol 26 (1) ◽  
pp. 35-43 ◽  
Author(s):  
Felipe P. L. Melo ◽  
Esteban Martínez-Salas ◽  
Julieta Benítez-Malvido ◽  
Gerardo Ceballos
Keyword(s):  
Seed Size ◽  
Tree Species ◽  
Deciduous Forest ◽  
Fragment Size ◽  
Forest Site ◽  
Forest Fragments ◽  
Dispersal Mode ◽  
Southern Mexico ◽  
Seed Dispersers ◽  
Small Forest

Abstract:This study tested whether the reduction in the number of large-bodied seed dispersers is correlated with shifts in the taxonomic and functional (e.g. dispersal mode and seed size) traits of the seeding communities within small fragments of semi-deciduous forest, southern Mexico. In five fragments (2.3–640 ha) and one continuous forest site we sampled tree and seedling species in 40 (20 × 20 m) and 120 (3 × 3 m) plots respectively, and recorded the incidence (presence/absence) of the disperser fauna (three common large-birds and >500-g mammals). Tree and seedling species were categorized according to dispersal mode, seed size and whether they originated from local (i.e. from dropped) or immigrant (i.e. from actively dispersed) seeds. Fragment size negatively correlated with number of species of medium to large vertebrate seed-dispersers and number of seedlings of large-seeded species, but had no influence on functional traits of the adult-tree community. Between 41% and 61% of all seedlings were considered as immigrants and the proportion of immigrant seedlings of large-seeded tree species was negatively correlated with forest size. The results suggest that biased defaunation in small forest fragments may seriously reduce recruitment of large-seeded tree species (>1.4 cm length) dispersed by vertebrates, negatively affecting successional trajectories of small forest fragments.

scholarly journals Decadal persistence of frugivorous birds in tropical forest fragments of northern Paraná

2015 ◽  
Vol 15 (2) ◽  
Author(s):  
Tiago Zaiden ◽  
Fernanda Cristina Marques ◽  
Hugo Reis Medeiros ◽  
Luiz dos Anjos
Keyword(s):  
Bird Species ◽  
The Other ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Frugivorous Birds ◽  
Point Counts ◽  
Bird Populations ◽  
Frugivorous Bird ◽  
Line Transects ◽  
Extinction Events

Forest fragmentation is a major cause of loss of species. We evaluated the local extinction of medium-large frugivorous bird species in six forest fragments of northern Paraná: the Parque Estadual Mata dos Godoy (PEMG), the largest and most preserved forest fragment in the region, and five other fragments. Fixed-width point counts and line transects were conducted along trails in the PEMG for 10 days: from September 2010 to March 2011, and from August 2011 to November 2011. Avian surveys in each of the other forest fragments were made over four days from October to December 2011. We compared data with a previous census carried out 10 years earlier. No extinction events were recorded from the PEMG. However, the relative abundance of species significantly changed during the ten years between surveys. In all the other forest fragments at least two frugivorous bird species disappeared, and in some as many as seven. Protecting the PEMG is crucial for the maintenance of frugivorous bird populations in our studied landscape.

scholarly journals EDGE EFFECT ON CHEMICAL ATTRIBUTES OF SOIL IN A SEASONAL FOREST

2019 ◽  
Vol 43 (1) ◽  
Author(s):  
Patrícia Anjos Bittencourt Barreto-Garcia ◽  
Rafael Nogueira Scoriza ◽  
Alessandro de Paula
Keyword(s):  
Organic Matter ◽  
Edge Effect ◽  
Deciduous Forest ◽  
Superficial Layer ◽  
Soil Samples ◽  
Forest Fragments ◽  
Forest Fragment ◽  
Chemical Attributes ◽  
Pasture Area ◽  
Potential Acidity

ABSTRACT The magnitude of changes in soil attributes can be used to identify the effects of natural or anthropogenic interference on forest fragments. The objective of this work was to evaluate the chemical attributes of the soil as indicators of the edge effect at a Seasonal Semi-deciduous Forest fragment in the Southwest of Bahia, Brazil. Four sampling ranges were defined in the forest fragment (Range 1: 0-10m; Range 2: 40-50 m; Range 3: 80-90 m; and Range 4: 400-410 m from the edge). A degraded native pasture area was used as the reference. Soil samples were collected at depths of 0-5, 5-10 and 10-20 cm. The samples were analyzed for pH and organic matter, P, K, Ca, Mg and Al. The superficial layer of the soil was sensitive to the changes imposed by the fragmentation, reflecting modifications in some of its chemical attributes up to a distance of 90 m from the edge towards the interior of the fragment, with more severe effects in the first 10 meters. Soil organic matter, potential acidity, CEC and pH were the most affected attributes, evidencing a gradient of variation in the edge-interior direction.

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