Influence of vegetation heterogeneity and landscape characteristics on anuran species composition in aquatic habitats along an urban-rural gradient in southeastern Brazil

2017 ◽  
Vol 27 (3-4) ◽  
pp. 235-244 ◽  
Author(s):  
Fabrício Hiroiuki Oda ◽  
Sidnei Gonçalves ◽  
Thiago Massao Oda ◽  
Lara Carolina Raphael Tschope ◽  
André Luiz Fraga Briso ◽  
...  
Keyword(s):  
Species Composition ◽  
Southeastern Brazil ◽  
Aquatic Habitats ◽  
Landscape Characteristics ◽  
Anuran Species ◽  
Vegetation Heterogeneity ◽  
Urban Rural

scholarly journals Species composition and similarities among anuran assemblages of forest sites in southeastern Brazil

2007 ◽  
Vol 64 (4) ◽  
pp. 364-374 ◽  
Author(s):  
Jaime Bertoluci ◽  
Ricardo Augusto Brassaloti ◽  
José Wagner Ribeiro Júnior ◽  
Vívian Maria de Faria Nasser Vilela ◽  
Henrique Oliveira Sawakuchi
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Southeastern Brazil ◽  
Neotropical Forests ◽  
Breeding Sites ◽  
Factors Affecting ◽  
Anuran Species ◽  
Forest Sites ◽  
Complementary Techniques ◽  
Data Deficient

Neotropical forests show high anuran species richness, but some Brazilian forest formations, like cerradão, semideciduous forests and restingas, remain poorly known. The composition of anuran species were determined for four forest sites belonging to different biomes in southeastern Brazil, based on two complementary techniques (visual encounter survey and survey on breeding sites), both applied simultaneously. A total of 60 anuran species belonging to eight families was recorded. Species richness and levels of endemism were higher in the Atlantic rainforest site. Sites located in the Cerrado domain were more alike than those located in the Atlantic Forest Domain. Similarity in anuran species composition was negatively correlated to the geographical distance among sites, which explains part of similarities in species composition. Factors affecting these occurrence patterns are discussed. One species (if its identity is confirmed) is considered Data Deficient by IUCN (The World Conservation Union), though it is not included in the Brazilian list of threatened amphibians. The presence of certain species with special habitats and microclimate requirements (bioindicators) suggests well-preserved ecosystems.

Influence of the environmental heterogeneity of breeding ponds on anuran assemblages from southeastern Brazil

2009 ◽  
Vol 87 (8) ◽  
pp. 699-707 ◽  
Author(s):  
T. S. Vasconcelos ◽  
T. G. Santos ◽  
D. C. Rossa-Feres ◽  
C.F.B Haddad
Keyword(s):  
Species Richness ◽  
Species Composition ◽  
Beta Diversity ◽  
Environmental Heterogeneity ◽  
Null Model ◽  
Distinct Species ◽  
Southeastern Brazil ◽  
Similar Species ◽  
Anuran Species ◽  
High Beta

We hypothesized that the environmental heterogeneity of breeding ponds influences the species composition and species richness of anuran assemblages from southeastern Brazil, because it provides humidity, shelter, and breeding microhabitats for anuran species, which can result in an increasing number of species in a given habitat. To begin, we tested whether the occurrence of anuran species in each breeding pond is different from a null model of random placement of species in those ponds. We then performed two tests to evaluate which of the five environmental descriptors of breeding ponds influence (1) the species composition and (2) species richness. Species composition of the 38 breeding ponds was correlated with number of edge types, number of plant types along the edges of the breeding ponds, and the hydroperiod. Neither the percentage of vegetation cover on the water’s surface nor the size of the breeding ponds were correlated with species composition. Only the number of edge types was correlated with species richness of breeding ponds. The correlation of three environmental descriptors with species composition and one environmental descriptor with species richness, as well as the high beta diversity among breeding ponds, suggest that the analyses of environmental heterogeneity on species composition was more informative than was the analysis for species richness, because breeding ponds with similar species richness can have distinct species composition among them (high beta diversity).

scholarly journals Composition and diversity of anurans in the Restinga of the Conde municipality, northern coast of the state of Bahia, northeastern Brazil

2016 ◽  
Vol 16 (3) ◽  
Author(s):  
Felipe Augusto Trindade Gondim-Silva ◽  
Alessandra Rodrigues Santos Andrade ◽  
Rafael Oliveira Abreu ◽  
Jamile Santos Nascimento ◽  
Geovane Paixão Corrêa ◽  
...  
Keyword(s):  
Species Richness ◽  
Species Diversity ◽  
Species Composition ◽  
Rainy Season ◽  
Dominant Species ◽  
The State ◽  
Northeastern Brazil ◽  
Freshwater Wetland ◽  
Northern Coast ◽  
Anuran Species

Abstract The Conde municipality is located in the northern coast of the state of Bahia (NC), northeastern Brazil, and is part of the Atlantic Tropical domain. The anuran fauna of the northern portion of the NC is still poorly known if compared to the southern portion. The Restinga is one of the predominant environments of the coastal plains of the NC and it is characterized essentially by presenting sandy soil covered by herbaceous and shrubby vegetation. The objective of this study was to determine the anuran species composition and diversity for the Restinga of the Conde municipality. Sampling was carried out at night by active search over four periods of five consecutive days each, two over the 'main rainy season' and two in a 'lesser rainy season', using 14 sample units (SUs) and five extra sample plots (EPs). We calculated dominance and species diversity using the Berger-Parker and Shannon-Wiener H' indices, respectively. We used accumulation curves and the Jackknife 1 estimator to estimate anuran species richness, considering only the data obtained from the SUs. We recorded 713 anuran specimens distributed within 33 species, 13 genera and five families (Bufonidae, Craugastoridae, Hylidae, Leptodactylidae and Microhylidae). The Hylidae and Leptodactylidae families had the highest species richness. Considering only the SUs (Jackknife 1 estimator in brackets), we recorded 28 species in the study area (33.9 ± 2.3), 13 in Shrubby Vegetation Zones - SVZ (20.8 ± 2.9) and 25 in Freshwater Wetland Zones - FWZ (28.9 ± 1.9). The abundance and species diversity of the FWZ (n = 638 specimens; H'= 2.4) were higher than those recorded for the SVZ (n = 52 specimens; H' = 1.9). The SVZ and FWZ showed distinct dominant species, wherein Pristimantis paulodutrai was the dominant species in SVZ and Scinax fuscomarginatus in FWZ. The Restinga of the Conde municipality stands out as the one with the highest anuran species richness already recorded considering only SVZ and FWZ. Moreover, its anuran species composition represented 55% of the anuran species known for the NC and included taxa common to three different morphoclimatic domains (Tropical Atlantic, Cerrado and Caatinga).

scholarly journals Dietary assessment of five species of anuran tadpoles from northern Odisha, India

2018 ◽  
Vol 10 (10) ◽  
pp. 12382-12388 ◽  
Author(s):  
Syed Asrafuzzaman ◽  
Susmita Mahapatra ◽  
Jasmin Rout ◽  
Gunanidhi Sahoo
Keyword(s):  
Body Length ◽  
Dietary Assessment ◽  
Management Strategies ◽  
Stomach Contents ◽  
Food Spectrum ◽  
Aquatic Habitats ◽  
Morphometric Measurements ◽  
Food Items ◽  
Anuran Species ◽  
Study Sites

Anuran tadpoles are gregarious predators capable of differentiating food items among diverse types of prey via varied feeding and oral structures.  Tadpoles were collected from different study sites in three districts of northern Odisha during three consecutive rainy seasons (from July–October of 2015–2017).  After morphometric measurements (total length and body length), the stomach contents of 75 tadpoles belonging to five different anuran species (Duttaphrynus melanostictus, Euphlyctis cyanophlyctis, Fejervarya orissaensis, Polypedates maculatus and Microhyla ornata) belonging to four families namely Bufonidae, Dicroglossidae, Rhacophoridae and Microhylidae were examined.  The food spectrum of tadpoles included mostly detritus, followed by phytoplankton (represented by 5 classes and 54 genera).  Such studies contribute to the understanding of the natural diets of these anuran species that can assist in developing management strategies for them.  Aquatic habitats must be conserved and maintained so that conservation of anurans can be ensured.

Seasonal patterns of breeding activity of Atlantic Rainforest anurans at Boracéia, Southeastern Brazil

2002 ◽  
Vol 23 (2) ◽  
pp. 161-167 ◽  
Author(s):  
Miguel Trefaut Rodrigues ◽  
Jaime Bertoluci
Keyword(s):  
Atlantic Rainforest ◽  
Southeastern Brazil ◽  
Seasonal Patterns ◽  
Breeding Activity ◽  
Monthly Temperature ◽  
Anuran Species ◽  
Number Of Species ◽  
Winter Activity ◽  
Calling Activity ◽  
Breeding Seasons

AbstractAnnual patterns of breeding activity of 28 anuran species were studied at Boracéia, an Atlantic Rainforest locality in the coastal mountains of Southeastern Brazil. Five patterns were evident: (1) species that call year-round; (2) opportunistic calling activity associated with rainfall; (3) explosive breeding; (4) winter activity; and (5) summer species with variable breeding seasons. The number of species with calling males was positively correlated with mean monthly temperature.

ANURAN SPECIES COMPOSITION FROM CHACO AND CERRADO AREAS IN CENTRAL BRAZIL

2019 ◽  
Vol 23 (04) ◽  
pp. 1027-1052 ◽  
Author(s):  
Cyntia Cavalcante Santos ◽  
Eric Ragalzi ◽  
Claudio Valério-Junior ◽  
Ricardo Koroiva
Keyword(s):  
Species Composition ◽  
Central Brazil ◽  
Anuran Species
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