scholarly journals Amphibians from Santa Isabel do Rio Negro, Brazilian Amazonia

2017 ◽  
Vol 16 (2) ◽  
pp. 183 ◽  
Author(s):  
Marcelo Menin ◽  
Vinicius Tadeu de Carvalho ◽  
Alexandre P. Almeida ◽  
Marcelo Gordo ◽  
Deyla P. Oliveira ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Pitfall Traps ◽  
Species List ◽  
Terrestrial Vertebrates ◽  
Brazilian Amazonia ◽  
Squamate Reptiles ◽  
Rio Negro ◽  
Similarity Indices ◽  
Areas Of Endemism ◽  
Salamander Species

A species list of amphibians from Santa Isabel do Rio Negro in Brazilian Amazonia is provided. Collections were made from March–April 2012 along each of two 3-km trails with the following sampling methods: (1) pitfall traps with drift fences; (2) visual and auditory surveys; and (3) chance encounters. The trail at Daraá is north of the Rio Negro, whereas the other in Ayuanã is south of the river. Forty species of anurans and one salamander species representing 20 genera and nine families were recorded. The species composition was compared with those of 16 other studies conducted in the Guiana, Imeri, and Jaú areas of endemism, where species richness varies from 21–63, and similarity indices range from 23–100%. The anuran fauna at our sites resembles that of Flota Faro in eastern Amazonia more than it does that of the nearest site in the Departamento del Guainía of Colombia. The index of similarity is extremely variable between sites of the same and distinct areas of endemism. This pattern also was observed in the cluster analysis. As expected, geographically close areas have similar faunal compositions. However, the anuran fauna of Parque Nacional do Jaú (Jaú area of endemism) resembles that of Manaus (Guiana area of endemism) more closely than it does that of the Ayuanã River, which belongs to the same area of endemism as Parque Nacional do Jaú. The limits of the areas of endemism are better defined by the presence / absence of other terrestrial vertebrates, such as birds and mammals, than by the assemblage of amphibians and squamate reptiles.

scholarly journals Checklist of lizards of the Juruti, state of Pará, Brazil

Check List ◽  
2013 ◽  
Vol 9 (1) ◽  
pp. 42 ◽  
Author(s):  
Ana Lúcia Costa Prudente ◽  
Fernanda Magalhães ◽  
Alessandro Menks ◽  
João Fabrício De Melo Sarmento
Keyword(s):  
Sampling Methods ◽  
Abundant Species ◽  
The Other ◽  
Sampling Effort ◽  
Pitfall Traps ◽  
Lizard Species ◽  
Species List ◽  
The Road ◽  
On The Road

We present the first lizard species list for the municipality of Juruti, state of Pará, Brazil. The list was drawn up as a result of data obtained from specimens deposited in the Herpetological Collection of the Museu Paraense Emílio Goeldi and from inventories conducted in 2008-2011. Sampling methods included pitfall traps with drift fences and time constrained searches. We considered the data collected by other researchers, incidental encounters and records of dead individuals on the road. We recorded 33 species, 26 genera and ten families. Norops tandai was the most abundant species. Compared with the other regions of Amazonia, the region of Juruti presented a large number of lizards. However, further studies with an increase in the sampling effort, could prove this area to be richer in lizards than that observed so far.

scholarly journals Lizards from central Jatapú River, Amazonas, Brazil

Check List ◽  
2014 ◽  
Vol 10 (1) ◽  
pp. 46 ◽  
Author(s):  
Deyla Paula de Oliveira ◽  
Sergio Marques Souza ◽  
Luciana Frazão ◽  
Alexandre Pinheiro de Almeida ◽  
Tomas Hrbek
Keyword(s):  
Species Richness ◽  
Sampling Methods ◽  
Geographic Distance ◽  
Present Species ◽  
Guiana Shield ◽  
Pitfall Traps ◽  
Lizard Species ◽  
Species List ◽  
Expected Species Richness ◽  
Faunal Similarity

The present study reports an inventory of lizard species from a region at the central Jatapú River located in the state of Amazonas, Brazil. The lizard fauna was surveyed using three sampling methods: diurnal and nocturnal visual search, pitfall traps with drift fences, and incidental collections. We recorded 24 lizard species belonging to 18 genera and eight families. Non-parametric estimators of richness (Bootstrap, Chao 2, Jackknife 1, Ace) were used to estimate the percentage of total richness sampled. Expected species richness varied from 27 species estimated via Bootstrap to 30 species with Jackknife 1. The composition of the lizard fauna encountered in the rio Jatapú plot was compared with seven other published surveys carried out in the region of the Brazilian Guiana Shield. The composition of the Jatapú lizard fauna was most similar to FLOTA Faro (84%) and least similar to ESEC Grão-Pará Center (66%). There was no association between faunal similarity and geographic distance. The present species list contributes to our knowledge of lizards of the southern portion of the Guiana Shield in Brazil.

scholarly journals Species richness and composition of snake assemblages in poorly accessible areas in the Brazilian Amazonia

2020 ◽  
Vol 20 (1) ◽  
Author(s):  
Luciana Frazão ◽  
Maria Ermelinda Oliveira ◽  
Marcelo Menin ◽  
Juliana Campos ◽  
Alexandre Almeida ◽  
...  
Keyword(s):  
Sampling Bias ◽  
Sampling Effort ◽  
Diverse Group ◽  
Pitfall Traps ◽  
Field Sampling ◽  
Urban Centers ◽  
Terrestrial Vertebrates ◽  
Brazilian Amazonia ◽  
Number Of Species ◽  
Number Of Individuals

Abstract: Snakes are a diverse group of terrestrial vertebrates of the order Squamata. Despite that, in the Amazonian biome, information about distribution and identification of snakes is limited when compared to other groups. Additionally, in Amazonia there is a sampling bias towards areas geographically close to urban centers and more densely populated areas. This in turn leads to false distribution gaps in poorly accessible areas of Amazonia. In this article we report the composition of snake assemblages in six areas of the Brazilian Amazonia, based on field sampling conducted over four years using standardized methods. We sampled 70 species from eight families: Typhlopidae (n=1), Leptotyphlopidae (n=1), Anillidae (n=1), Boidae (n=5), Colubridae (n=15), Dipsadidae (n=35), Elapidae (n=7), and Viperidae (n=5). The largest number of species was recorded in the Trombetas River area and the lowest in the Jatapu River area. The total beta diversity was 0.40 and the snake assemblages were structured mainly by replacement (72.5%). The time-limited search was the method that recorded the greatest number of individuals in the studied areas (44.1%) and also the greatest number of species (n=40). However, some species were recorded only by other methods such as interception by pitfall traps with directional fences. Despite the large number of species sampled in the study, no particular area comprised more than 40% of species registered in all the areas, indicating that snakes are poorly detected even with large sampling effort across multiple areas of a species distribution.

scholarly journals Anurans of the Urucu Petrol Basin, municipality of Coari, State of Amazonas, northern Brazil

Check List ◽  
2013 ◽  
Vol 9 (3) ◽  
pp. 601 ◽  
Author(s):  
Ana Lúcia Da Costa Prudente ◽  
Marcelo José Sturaro ◽  
Alessandra Elisa Melo Travassos ◽  
Gleomar Fabiano Maschio ◽  
Maria Cristina Santos-Costa
Keyword(s):  
Sampling Methods ◽  
Sampling Effort ◽  
Pitfall Traps ◽  
The Road ◽  
Northern Brazil ◽  
On The Road

We present the first species amphibian list for municipality of Coari, state of Amazonas, Brazil. The list was drawn up as a result of data obtained from specimens deposited in the Herpetological Collection of the Museu Paraense Emílio Goeldi and inventories conducted in the Urucu Petrol Base, in 2003-2004 and 2007-2009. Sampling methods included pitfall traps with drift fences and time constrained searches. We considered the data collected by other researchers, incidental encounters and records of dead individual on the road. Fifty four species were recorded. Rhinella gr. margaritifera (n= 68), Adenomera gr. marmorata (n= 59), and Osteocephalus leprieurii (n= 20) were the most collected, while ten species were less collected. Compared with other studies in eastern Amazonia, the region of Urucu presented a large number of anurans. Nonetheless, it ́s not possible to confirm this because the data collected were not standardized among studies. However, further studies by, increasing the sampling effort, could prove this area to be richer in anurans than that observed so far.

Catalogue of distribution of lizards (Reptilia: Squamata) from the Brazilian Amazonia. III. Anguidae, Scincidae, Teiidae

Zootaxa ◽  
2016 ◽  
Vol 4205 (5) ◽  
pp. 401 ◽  
Author(s):  
MARCO A. RIBEIRO-JÚNIOR ◽  
SILVANA AMARAL
Keyword(s):  
Species Level ◽  
Distribution Data ◽  
Semideciduous Forest ◽  
Brazilian Amazonia ◽  
Disjunct Populations ◽  
Areas Of Endemism ◽  
Gallery Forests ◽  
Present Distribution ◽  
Southwestern Amazonia ◽  
Area Data

We present distribution data of all Anguidae, Scincidae, and Teiidae lizards known from the Brazilian Amazonia, totaling 29 species-level taxa, belonging to 14 genera. This represents 11 more species-level taxa than previously reported for these families in this area. Data were based on literature and 46,806 specimens deposited in three North American and eight Brazilian museums, including the main collections harboring Amazonian material. Most species (~55%) are endemic to Amazonia. Except for Ameiva ameiva, that is present in several environments and domains, non-endemic species are either associated with open dry (semideciduous) forest or open vegetation (savanna) enclaves in Amazonia, occupying similar environments outside Amazonia, gallery forests within the Cerrado, or present disjunct populations in the Atlantic Forest. As a whole, six taxa are widespread in Amazonia, four are restricted to eastern Amazonia, four to western Amazonia, three to southwestern Amazonia, one to northern Amazonia, and seven to the southern peripheral portion of Amazonia. Besides, two species present apparently more restricted, unique distributions. Only three species have a distribution that is congruent with one of the areas of endemism (AE) recognized for other organisms (birds and primates), of which two occur in AE Guiana and one in AE Inambari. 

Active Search on Carcasses versus Pitfall Traps: a Comparison of Sampling Methods

2016 ◽  
Vol 45 (2) ◽  
pp. 221-226 ◽  
Author(s):  
N I Zanetti ◽  
R Camina ◽  
E C Visciarelli ◽  
N D Centeno
Keyword(s):  
Sampling Methods ◽  
Pitfall Traps ◽  
Active Search

Ant (Hymenoptera: Formicidae) diversity in savanna ecosystem: a comparison of sampling methods and seasons

2020 ◽  
Vol 14 (1) ◽  
pp. 6-15
Author(s):  
CEBISILE N. MAGAGULA
Keyword(s):  
Sampling Methods ◽  
Direct Search ◽  
Natural Ecosystems ◽  
Pitfall Trapping ◽  
Conservation Areas ◽  
Species List ◽  
Species Lists ◽  
Important Means ◽  
Unique Species ◽  
Biodiversity Information

One of the most important means of obtaining biodiversity information in natural ecosystems is surveying and collection of biological specimen using appropriate sampling methods. This study was carried out to determine the most appropriate sampling method for ants in a savanna ecosystem during two distinct seasons. Pitfall trapping, direct search and litter extrac­tion produced significantly different species lists, with each method having unique species and seasons also showed the same trend. A total of 53 species were collected from both conservation areas during the study, with Pheidole sp.4, Crematogaster amita and Monomorium albopilosum being the three most dominant species. Generalised Myrmicinae and opportunists were the functional groups with the highest species richness in all methods and seasons, with pitfall trapping having the highest richness. While pitfall trapping and direct search were deemed to be the most efficient methods in this savanna, results also suggest that varied sampling methods are necessary to ensure sampling of all microhabitats within a specific locality. Ad­ditionally, utilisation and testing of sampling methods is essential for each geographic region.Key words: Sampling, biodiversity assessment, species list, insects, Formicidae, ants, savanna

scholarly journals Monitoring arthropods in protected grasslands: comparing pitfall trapping, quadrat sampling and video monitoring

Web Ecology ◽  
2015 ◽  
Vol 15 (1) ◽  
pp. 15-23 ◽  
Author(s):  
J. G. Zaller ◽  
G. Kerschbaumer ◽  
R. Rizzoli ◽  
A. Tiefenbacher ◽  
E. Gruber ◽  
...  
Keyword(s):  
Sampling Methods ◽  
Natural Populations ◽  
Video Camera ◽  
Video Monitoring ◽  
Pitfall Traps ◽  
Pitfall Trapping ◽  
Quadrat Sampling ◽  
Advantages And Disadvantages ◽  
Metal Frame ◽  
Non Destructive

Abstract. When monitoring the activity and diversity of arthropods in protected areas it is ethically advisable to use non-destructive methods in order to avoid detrimental effects on natural populations and communities. The aim of this study was to compare the efficiency of three methods for potential use for arthropod monitoring in a protected grassland: pitfall trapping, quadrat sampling and video monitoring. Pitfall trapping was conducted either during the day or over night (cup diameter 6.5 cm, unfenced, without preservation fluid). Quadrat sampling was conducted within a metal frame (width × length × height: 50 × 50 × 30 cm). Video monitoring was done on a 68 × 37 cm area using a digital high-density video camera mounted on a tripod. The study site was located in a semi-dry grassland northwest of Vienna, Austria (305 m a.s.l., 48°27′ E, 16°34′ N); the three methods were replicated five times. Across the sampling methods a total of 24 arthropod orders were observed with Hymenoptera being the most abundant, followed by Diptera and Coleoptera. The sampling methods differed considerably in number of arthropods recorded: video monitoring (2578 individuals) followed by quadrat sampling (202 individuals), nocturnal (43 individuals) and diurnal pitfall trapping (12 individuals). Diversity of arthropod assemblages varied highly significantly among the tested methods with quadrat sampling yielding the highest diversity 0.70 ± 0.22 (Gini–Simpson index, mean ±SD) followed by video monitoring (0.57 ± 0.15), diurnal pitfall sampling (0.35 ± 0.28) and nocturnal pitfall sampling (0.17 ± 0.24). Video surveillance of the pitfall traps showed that out of a total of 151 individuals crawling in the vicinity of pitfall traps none of them were actually trapped. A tabular comparison listing the advantages and disadvantages of the sampling methods is presented. Taken together, our results suggest that video monitoring has a great potential as a supplementary method for quantitative and qualitative assessments of arthropod activity and diversity in grasslands.

scholarly journals Towards precision ecology: Relationships of multiple sampling methods quantifying abundance for comparisons among studies

2021 ◽  
Author(s):  
Benjamin D. Hoffmann ◽  
Magen Pettit
Keyword(s):  
Sampling Methods ◽  
Full Range ◽  
Transformation Method ◽  
Sampling Techniques ◽  
Pitfall Traps ◽  
Multiple Sampling ◽  
Sampling Protocols ◽  
Zero Values ◽  
Relative Utility ◽  
Ant Ecology

ABSTRACTBecause different sampling techniques will provide different abundance values, it is currently difficult to compare results among many studies to form holistic understandings of how abundance influences ant ecology. Using three sampling methods in the same location we found pitfall traps best confirmed A. gracilipes presence recording the fewest zero values (9.1%), card counts were the least reliable (67.1%), and tuna lures were intermediate (30.1%). The abundance of A. gracilipes from card counts ranged from 0 to 20, in pitfall traps from 0 to 325, and the full range of tuna lure abundance scores (0-7) were sampled. We then determined the relationships between these three standard ant sampling techniques for the abundance of yellow crazy ant Anoplolepis gracilipes. Irrespective of the data transformation method, the strongest relationship was between pitfall traps and tuna lures, and the least strong was between pitfall traps and card counts. We then demonstrate the utility of this knowledge by analysing A. gracilipes abundance reported within published literature to show where the populations in those studies sit on an abundance spectrum. We also comment on insights into the relative utility of the three methods we used to determine A. gracilipes abundance among populations of varying abundance. Pitfall traps was the most reliable method to determine if the species was present at the sample level. Tuna lures were predominantly reliable for quantifying the presence of workers, but were limited by the number of workers that can gather around a spoonful of tuna. Card counts were the quickest method, but were seemingly only useful when A. gracilipes abundance is not low. Finally we discuss how environmental and biological variation needs to be accounted for in future studies to better standardise sampling protocols to help progress ecology as a precision science.

scholarly journals Interfaces Híbridas: armas e armadilhas de caça e pesca no alto Rio Negro

ILUMINURAS ◽  
2016 ◽  
Vol 17 (42) ◽  
Author(s):  
Thiago Lopes da Costa Oliveira
Keyword(s):  
Material Culture ◽  
Verbal Communication ◽  
Comparative Data ◽  
The Other ◽  
Technical Knowledge ◽  
Brazilian Amazonia ◽  
Rio Negro ◽  
The One ◽  
Indigenous Hunting ◽  
Hunting And Fishing

O presente trabalho enfoca as relações entre humanos, artefatos, animais e o território no alto rio Negro, noroeste da Amazônia brasileira. Partindo de uma etnografia feita junto aos Baniwa-Hohodeni, o texto articula dados advindos de outros povos e analisa as tecnologias de caça e pesca na região. No contexto destas atividades, armas e armadilhas envolvidas nestas técnicas serão tomados como objetos privilegiados de análise. De um lado, estes artefatos e conhecimentos técnicos serão descritos como objetificações do conhecimento territorial e etológico dos Baniwa; de outro, eles serão analisados a partir da noção de "comunicação não-verbal" e das interações entre humanos e não-humanos características da região.Palavras-chave: Cultura Material e Tecnologia, Caça e Pesca, Territorialidade, Baniwa, alto rio Negro.Hybrid Interfaces: guns and traps for hunting and fishing on the upper Rio NegroAbstractThe present work focuses on the relationships between humans, artifacts, animals and territory in the upper Rio Negro, in northwestern Brazilian Amazonia. Based on an ethnography of the Baniwa-Hohodeni, the text musters comparative data from other  peoples of the upper Rio Negro in an analysis of hunting and fishing technologies in the region. In the context of these activities, my analysis will privilege the weapons and traps entangled in these techniques. On the one hand, these artifacts and technical knowledge will be described as objectifications of the territorial and ethological knowledge of the Baniwa. On the other, they will be analyzed through the notion of "non-verbal communication" and the interactions between humans and nonhumans that are characteristic of the region.Keywords: Material Culture and Technology. Indigenous Hunting and Fishing. Territoriality. Baniwa. Alto Rio Negro. 

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