Bats in wetlands: composition and structure of assemblage in Reserva Natural Don Luis, Esteros del Iberá, Argentina

Mammalia ◽  
2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Antonella Argoitia ◽  
Miranda Collett
Keyword(s):  
Threatened Species ◽  
Species Accumulation Curve ◽  
Accumulation Curve ◽  
Species Accumulation ◽  
Composition And Structure ◽  
Ecological Aspects

Abstract We report diversity data and ecological aspects (richness, abundance and guilds) of bat assemblages in the Esteros del Iberá. We sampled four sites at Reserva Natural Don Luis, with an effort of 75 nights, 256 nets and 12 harp traps over six years. We made a species accumulation curve, Whittaker diagram, and calculated inventory completeness. A complete inventory for the area included 471 individuals belonging to 14 species of Phyllostomidae, Vespertilionidae, and Molossidae families. Insectivorous guilds present the greatest richness and abundance. Esteros del Iberá shelters a diversity of guilds, one threatened species, and a new bat record for the region.

scholarly journals Fishes (Osteichthyes: Actinopterygii) from igarapés of the rio Acre basin, Brazilian Amazon

Check List ◽  
2013 ◽  
Vol 9 (6) ◽  
pp. 1410 ◽  
Author(s):  
Alexander Claro-García ◽  
Lisandro Juno Soares Vieira ◽  
Lucas Ribeiro Jarduli ◽  
Vitor Pimenta Abrahão ◽  
Oscar Akio Shibatta
Keyword(s):  
Fish Assemblages ◽  
New Records ◽  
Fish Fauna ◽  
Brazilian Amazon ◽  
Species Accumulation Curve ◽  
High Importance ◽  
Accumulation Curve ◽  
Species Accumulation ◽  
Number Of Species ◽  
Fauna Composition

This study presents a list of species from igarapés tributaries of the rio Acre, Acre State, Brazil. Fish assemblages were sampled in October 2009, August and October 2010, using standard ichthyological gear, along fifteen sampling sites. A total of 11,395 specimens, distributed in 94 species, 24 families and six orders were collected. The most species-rich orders were Characiformes with 45 species (48.4%) and Siluriformes with 33 species (34.7%); from which Serrapinnus gr. microdon (22.4%), Otocinclus vittatus (20.4%), Phenacogaster pectinatus (10.9%), Brachychalcinus copei (5.8%) and Knodus sp. (5.3%) represented 64.8 % of the specimens captured. The species accumulation curve does not present a stabilization tendency, indicating that, additional sampling can increase the number of species. This study has a high importance for the knowledge of the rio Acre fish fauna composition and adds 52 new records of species to the fish fauna of the rio Purus.

Estimating the snake species richness of the Santubong Peninsula (Borneo): a computer-simulation

2012 ◽  
Vol 33 (3-4) ◽  
pp. 521-525
Author(s):  
Johan van Rooijen
Keyword(s):  
Species Richness ◽  
Estimation Procedure ◽  
Weibull Model ◽  
Small Scale ◽  
Species Accumulation Curve ◽  
Wide Confidence Interval ◽  
Snake Species ◽  
Accumulation Curve ◽  
Species Accumulation ◽  
Accuracy And Precision

The snake species richness of the Santubong Peninsula, Sarawak, Borneo, has been estimated previously by fitting a Weibull model to the rarefied species accumulation curve. In the present study, the estimation procedure was simulated in order to shed more light on its validity, i.e. its accuracy and precision. First, the estimate was updated on the basis of an additional, small-scale, survey carried out in 2011. Subsequently, survey-data were used to construct a simulation database. Twenty samples were randomly drawn from this database. Each sample was transformed into a rarefied species accumulation curve to which a Weibull model was fitted. For comparison, various related models were fitted as well. All applied models resulted in a downwardly biased estimate. The Weibull model performed best, providing the estimate of species richness with the smallest bias and thus highest accuracy. As for the precision of the estimate, a rather wide confidence interval was established.

Cladocera (Crustacea, Branchiopoda) in coastal temporary environments in southern Brazil

Zootaxa ◽  
2019 ◽  
Vol 4701 (5) ◽  
pp. 473-480
Author(s):  
KAROLINE PEREIRA MARTINS ◽  
MAIBY GLORIZE DA SILVA BANDEIRA ◽  
CLEBER PALMA-SILVA ◽  
EDÉLTI FARIA ALBERTONI
Keyword(s):  
Coastal Plain ◽  
Coastal Region ◽  
Rio Grande ◽  
Aquatic Environments ◽  
Species Accumulation Curve ◽  
Southern Brazil ◽  
Rio Grande Do Sul ◽  
Accumulation Curve ◽  
Species Accumulation ◽  
Number Of Species

The coastal plain of Rio Grande do Sul state, southern Brazil, presents as characteristic large expanses of wetlands. Some of these environments are of a temporary nature, and thus have a community adapted to periods with water and periods of drought. Among these communities we can highlight the Cladocera, which have the capacity to form structures of dormancy, and due to this adaptation are effective at colonizing these environments. This study aims to identify the Cladocera species present in the temporary aquatic environments of the southern coastal region of Brazil. Samples were collected in 14 temporary aquatic environments using a classical filtering methodology. As results we obtained 64 Cladocera taxa, representing 54% of the total number of species described in Brazil. The number of taxa was high, the species accumulation curve showed a tendency to stabilization, demonstrating that this region possesses a greater richness.

scholarly journals DESEMPENHO DE MÉTODOS E PROCESSOS DE AMOSTRAGEM PARA AVALIAÇÃO DE DIVERSIDADE EM FLORESTA OMBRÓFILA MISTA

FLORESTA ◽  
2013 ◽  
Vol 43 (4) ◽  
pp. 579 ◽  
Author(s):  
Ana Paula Dalla Corte ◽  
Carlos Roberto Sanquetta ◽  
Afonso Figueiredo Filho ◽  
Thaiza Karine Pereira ◽  
Alexandre Behling
Keyword(s):  
Shannon Index ◽  
Species Number ◽  
Species Accumulation Curve ◽  
Sample Design ◽  
Forest Diversity ◽  
Sampling Schemes ◽  
Accumulation Curve ◽  
Species Accumulation ◽  
Number Of Species ◽  
Sampling Procedures

Este trabalho objetivou testar tamanhos, processos de distribuição e intensidades de amostragem, com a finalidade de indicar os melhores tratamentos para aplicação em levantamentos que visam expressar a diversidade florestal. Foram utilizados dados da FLONA de Irati, Paraná, e ao todo foram analisados 28 tratamentos. Os resultados foram analisados considerando o número de espécies, o número de indivíduos amostrados e os índices de Margalef, Shannon e de Simpson. A curva do coletor (ou curva espécies-área) foi construída sob três abordagens: ordem numérica sequencial qualquer das parcelas; ordem crescente do número de espécies em cada parcela; e ordem da parcela com maior número de espécies para a de menor número amostradas. O processo aleatório representou melhor o número de espécies em áreas amostradas menores, ao passo que o sistemático em áreas amostradas maiores. Os índices de Simpson e de Shannon não tiveram sensibilidade para representar as variações encontradas em relação ao censo. O índice de Margalef apresentou sensibilidade melhor para expressar a diversidade de espécies presentes na área. A curva do coletor mostrou-se facilmente manipulável para representar uma situação favorável ou desfavorável para a análise da suficiência amostral.Palavras-chave: Curva do coletor; Simpson; Shannon; Margalef. AbstractPerformance of methods and sampling procedures in order to evaluate forest diversity in Araucaria forest. This research aimed at testing different plot and sample sizes, as well the sampling design to evaluate diversity indexes in a natural forest. The study was carried out in the Irati National Forest, Paraná. A combination of sampling schemes resulted in 28 treatments, which were evaluated considering the number of species, the number of sampled individuals and calculation of the Margalef, Shannon and Simpson indexes. The species accumulation curve was carried out based on three approaches: random sequential numerical order, ascending order of species number in each plot, and  order of the parcel with the highest number of species for the smaller number of species. The random sample design represented at best the number of species in smaller areas (richness), and the systematic sample design represented better the biggest sampled areas. The Simpson index and Shannon index were not sensitive to represent the variations found in relation to the census. The Margalef index had better sensitivity to express species diversity of the forested area. The species accumulation curve proved its feasibility to represent a favorable and sufficient sampling size.Keywords: Collector curve; Simpson; Shannon; Margalef. 

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