Consulta: subjectFacets:"Assemblage"
Registros recuperados: 8
Data/hora: 12/06/2024 10:33:56

Echinoderms communities in the Tunantal area, Gulf of Cariaco, Venezuela
Provedor de dados: 5
Autores: Gomez-maduro, Maria Cecilia; Hernandez-avila, Ivan.
Echinoderms are relevant in the structure of marine benthic assemblages, both due their diversity and their ecological niche. However, studies related with occurrence, abundance and patterns of distribution of echinoderms in Venezuela are still scarce. In the present study we describe the echinoderms in shallow-waters habitats (corals patches, Thalassia beds, sandy bottom, rocky subtidal shore, and mouth of river) at Tunantal bay, Golfo de Cariaco, Venezuela, an area that face threats related with the increase of urban development. Samples were performed during September-October 2010 and February-April 2011, using quantitative (1 m(2) plots) and qualitative diving observations. Measurements include density, number of species, evenness, Shannon diversity...
Tipo: Text
Palavras-chave: Caribbean; Shallow environments; Echinometra; Assemblage; Diversity.
Ano: 2015
URL: http://archimer.ifremer.fr/doc/00439/55011/56440.pdf

Diversity of cave bats in the brazilian tropical dry forest of Rio Grande do Norte State
Provedor de dados: 81
Autores: Vargas-Mena,Juan Carlos; Cordero-Schmidt,Eugenia; de Medeiros Bento,Diego; Rodriguez-Herrera,Bernal; Medellín,Rodrigo A; Venticinque,Eduardo M.
Caves are important roosts for bats in karstic areas and play a critical role in the protection of bat populations. In the state of Rio Grande do Norte, in northeastern Brazil, cave-dwelling bats are poorly studied. Moreover, the state contains more than 900 caves, mainly in the Caatinga biome, that may offer important roosts for local bat populations. Thus, to gain a first insight into the richness, diversity, and colony size of cave-bats in the state, we sampled 13 caves through active search and captures with mist nets. Sixteen species from five families were recorded, and the biggest colonies belonged to Pteronotus gymnonotus and Phyllostomus discolor. Furna Feia cave was the richest, with 10 species. Our results showed that Rio Grande do Norte is home...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assemblage; Caatinga; Cave-dwelling bats; Colony size; Richness.
Ano: 2018
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0327-93832018000100016

Ecology of a snake assemblage in the Atlantic Forest of southeastern Brazil
Provedor de dados: 84
Autores: Hartmann,Paulo A.; Hartmann,Marília T.; Martins,Marcio.
The main objective of this study was to examine the natural history and the ecology of the species that constitute a snake assemblage in the Atlantic Rainforest, at Núcleo Picinguaba, Parque Estadual da Serra do Mar, located on the northern coast of the state of São Paulo, southeastern Brazil. The main aspects studied were: richness, relative abundance, daily and seasonal activity, and substrate use. We also provide additional information on natural history of the snakes. A total of 282 snakes, distributed over 24 species, belonging to 16 genera and four families, has been found within the area of the Núcleo Picinguaba. Species sampled more frequently were Bothrops jararaca and B. jararacussu. The methods that yielded the best results were time constrained...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Assemblage; Snake; Diet; Habitat use; Activity.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492009002700001

Snake assemblages of Marajó Island, Pará state, Brazil
Provedor de dados: 103
Autores: Rodrigues,Gerson Moreira; Maschio,Gleomar Fabiano; Prudente,Ana Lúcia da Costa.
ABSTRACT We describe the diversity, natural history and structure of snake assemblages from Marajó Island, state of Pará, Brazil, after analyzing 439 specimens deposited in herpetological collections. We tested the hypothesis that snake assemblages from forest and open areas of Marajó Island are distinct with regard to their structure, composition and functional groups. To compare the snake composition of the forest and open areas of Marajó with other comparable assemblages in Brazil, Principal Coordinate Analysis and Clustering tests were performed. A total of 61 species of snakes was recorded for Marajó, with ten species cited for the first time for the study area (Atractus natans Hoogmoed &amp; Prudente, 2003, A. schach (Boie, 1827), Dendrophidion...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazon; Assemblage; Functional groups; Herpetofauna.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000100700

Morcegos (Mammalia: Chiroptera) da região do Médio Rio Teles Pires, Sul da Amazônia, Brasil
Provedor de dados: 36
Autores: MIRANDA,João M. D.; ZAGO,Luciana; CARVALHO,Fernando; RUBIO,Marcelo B. G.; BERNARDI,Itiberê P.
A Amazônia é a maior floresta tropical do mundo e pelo menos 147 espécies de morcegos ocorrem neste ambiente. A despeito desta grande riqueza, a diversidade de morcegos da Amazônia é pobremente conhecida e existem grandes lacunas neste conhecimento. O objetivo do presente trabalho foi descrever a assembleia de morcegos ocorrentes na região do Médio Teles Pires (MTP), no sul da Amazônia. Além disso, avaliou-se a similaridade dessa assembleia em relação a 14 assembleias estudadas em outras localidades amazônicas e avaliou-se a correlação entre as similaridades destas localidades e suas distâncias. Trinta e três espécies de morcegos foram registradas, representando 71% das espécies estimadas (Jackknife2). As três espécies com maior abundância relativa foram:...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Chiroptera; Inventário de fauna; Assembleias; Biodiversidade; Chiroptera; Fauna survey; Assemblage; Biodiversity.
Ano: 2015
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672015000100089

Pequenos mamíferos não-voadores (Didelphimorphia, Rodentia) em campos litorâneos do extremo sul do Brasil
Provedor de dados: 49
Autores: Quintela,Fernando Marques; Gonçalves,Bruno Igure; Trindade,Gabriel Eberts; Santos,Maurício Beux dos; Tozetti,Alexandro Marques.
Non-volant small mammals are key elements in natural environments due its importance as food resource. This study aimed to investigate the species composition and habitat occupancy by non-volant small mammals (Didelphimorphia, Rodentia) in a coastal grassland area in southern Rio Grande do Sul coastal plain. Between April 2009 and March 2010 pitffal traps were used to capture small mammals in coastal grasslands associated to sand dunes and arbustive Restinga. We sampled 180 individuals including two marsupials (Cryptonanus guahybae and Didelphis albiventris) and seven rodent species (Calomys laucha, Cavia aperea, Ctenomys flamarioni, Deltamys kempi, Oligoryzomys flavescens, Oxymycterus nasutus and Scapteromys tumidus). Cryptonanus guahybae, D. albiventris...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal environments; Marsupials; Rodents; Calomys laucha; Oligoryzomys flavescens; Assemblage.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400284

Diversity, activity patterns, and habitat use of the snake fauna of Chapada dos Veadeiros National Park in Central Brazil
Provedor de dados: 49
Autores: França,Frederico Gustavo Rodrigues; Braz,Vívian da Silva.
Chapada dos Veadeiros National Park (CVNP) in central Brazil is one of the most important protected areas of Brazilian Cerrado yet the diversity that this park harbors remains unknown for many taxa. From 2006 to 2009, we studied the snake assemblage of CVNP to determine the species composition, abundance, seasonal and daily activity patterns, morphology, and habitat use. We documented 47 snake species from seven families within CVNP, with the most common species being Bothrops marmoratus, Oxyrhopus trigeminus, Crotalus durissus and Bothrops moojeni. The incidence of snakes was highly seasonal and appeared to be associated mainly with rainfall. Daily activity patterns revealed that the majority of snakes are strictly diurnal, whereas others are nocturnal or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Snakes; Assemblage; Ecology; Brazilian Cerrado.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000100008

Diversity and singularity of the avifauna in the austral peat bogs of the Cape Horn Biosphere Reserve, Chile
Provedor de dados: 118
Autores: Ibarra,José Tomás; Anderson,Christopher B; Altamirano,Tomás A; Rozzi,Ricardo; Bonacic,Cristián.
Sphagnum-dominated peat bogs that are strongly embedded within the southern temperate forest matrix are increasingly being used for agriculture. Nevertheless, little is known about their biodiversity. Moreover, the remote areas of southern Chile where peat bogs are found, such as the Cape Horn Biosphere Reserve (CHBR, 54-55ºS), where birds are the most diverse and best represented group of vertebrates, have not been well-investigated. With the aim to broaden this knowledge in the CHBR, we studied the diversity of the avian assemblage in peat bogs on Navarino Island. We compared the composition of avian species between wetlands with and without peat bogs to test if Sphagnum bogs represented a singular habitat for birds in this area. Furthermore, the 37 bird...
Tipo: Journal article
Palavras-chave: Assemblage; Cape Horn Biosphere Reserve; Navarino Island; Patagonia; Sphagnum spp.; Wetlands.
Ano: 2010
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202010000100003