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| Registros recuperados: 13 | |
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| Lozovei,Ana Leuch; Silva,Mário Antônio Navarro da. |
| The collects from mosquitoes' sample that repro-duce in leaf imbricate of bromeliads were done by two differents methods: a conven-tional method where the plants were felled and the water inside were dropped in a recipient and in the second method the samples were collected by sucking the water, so the plant wasn't felled. The number of bromeliads studied in each method was 120 plants from zero to 15 m height. The period of study lasted from january till december 1989. The bromeliads were collected monthly by each method. The score of immature was done at the laboratory. The variables studied were the number of leaf axils with water (Xi, Yi), water volume (cm³) inside each bromeliad (X2, Y2), the number of immature mosquitoes (larvae and pupae) inside each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diptera; Culicidae; Bromeliads; Sampling methods. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000400003 |
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| Portfors,Christine V.; Fenton,M. Brock; Aguiar,Ludmilla M. de S.; Baumgarten,Julio E.; Vonhof,Maarten J.; Bouchard,Sylvie; Faria,Deborah M. de; Pedro,Wagner A.; Rauntenbach,Naas I. L.; Zortea,Marlon. |
| Assessing the composition of an area's bat fauna is typically accomplished by using captures or by monitoring echolocation calls with bat detectors. The two methods may not provide the same data regarding species composition. Mist nets and harp traps may be biased towards sampling low flying species, and bat detectors biased towards detecting high intensity echolocators. A comparison of the bat fauna of Fazenda Intervales, southeastern Brazil, as revealed by mist nets and harp trap captures, checking roosts and by monitoring echolocation calls of flying bats illustrates this point. A total of 17 species of bats was sampled. Fourteen bat species were captured and the echolocation calls of 12 species were recorded, three of them not revealed by mist nets or... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic rain forest; Bats; Bat detector; Chiroptera; Diversity; Echolocation; Sampling methods; Southeastern Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752000000200022 |
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| Storck,Lindolfo; Antúnez,Claudia Carolina Cabral; Guedes,Jerson Vanderlei Carús; Cargnelutti Filho,Alberto; Alvarez,Jimmy Walter Rasche. |
| ABSTRACT Estimates of diversity indices provide information on distribution, richness and abundance of species within a community. The aim of the current study was to estimate faunistic indices (richness, constancy, dominance and abundance) of the species collected by beat cloth and entomological net sampling methods in different soybean crops and to determine the sample size necessary to estimate faunistic indices. Fauna density from 100 soybeans crops located in nine municipalities in Rio Grande do Sul, Brazil, were evaluated. Thirty points, 20 meters apart from one another, were marked in the crops. At each point, insect pests and natural enemies were collected using the two sampling methods. Faunistic indices, including the average and interval... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Glycine max; Resampling; Sample size; Natural enemies; Sampling methods. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000600559 |
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| Souza,Débora Rodrigues de; Stingel,Erich; Almeida,Luiz Carlos de; Lazarini,Marco Antônio; Munhae,Catarina de Bortoli; Bueno,Odair Correa; Archangelo,Claudinei Rogério; Morini,Maria Santina de C.. |
| The harvest of sugarcane is still traditionally done manually with the burning of straw in most cultivated areas in Brazil. However, burning has been gradually eliminated with the relatively recent use of mechanical harvesting. This will result in significant changes in the agroecosystem, as the straw will remain in the field. No investigation on Formicidae found in sugarcane plantations in Southeastern Brazil harvested by this new system has been done yet. Because of their feeding habits, many species of this family may act as predators of several sugarcane pests. In this study, the sampling efficacy of pitfall traps, baits, and underground traps with two types of attractants were evaluated. Pitfall traps gave the largest richness, while abundance was the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pitfall; Underground traps; Baits; Predatory ants; Sampling methods. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162010000600006 |
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| Rocha-Mendes,Fabiana; Neves,Carolina Lima; Nobre,Rodrigo de Almeida; Marques,Renato Matos; Bianconi,Gledson Vigiano; Galetti,Mauro. |
| This study presents data on the composition and species richness of non-flying mammals in the northern part of the Parque Estadual da Serra do Mar, called Núcleo Santa Virgínia (NSV - around 17000 hectares of Atlantic Forest), São Paulo state, southeastern Brazil. The species list was based on ca. 660 km of line-transects, 25512 hours of cameras traps, 7740 trap.nights for small mammals, and 394 track-station.days, as well as occasional records and registers from local people (period 2002 to 2009). Based on these complementary methods, a total of 58 species were recorded from the 85-104 possible. Eighteen taxa are listed in the Brazilian endangered species list, 29 in the state list. The high species richness of non-volant mammals and the presence of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic forest; Inventory; Mammalia; Sampling methods; Species richness. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032015000100203 |
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| Dalosto,Marcelo M.; Palaoro,Alexandre V.; Oliveira,Davi de; Samuelsson,Évelin; Santos,Sandro. |
| Aeglids are freshwater anomurans that are endemic from southern South America. While their population biology at the species-level is relatively well understood, intraspecific variation within populations has been poorly investigated. Our goal was to investigate the population biology of Aegla platensis Schmitt, 1942 from the Uruguay River Basin, and compare our data with data from other populations. We estimated biometric data, sex ratio, population density and size-class frequencies, and frequencies of ovigerous females and juveniles, from the austral spring of 2007 until autumn 2008. Sexual dimorphism was present in adults, with males being larger than females. Furthermore, males and females were significantly larger than previously recorded for the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aeglids; Ecological plasticity; Intraspecific variation; Population density; Sampling methods; Sex ratio. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702014000300002 |
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| Frazão,Luciana; Oliveira,Maria Ermelinda; Menin,Marcelo; Campos,Juliana; Almeida,Alexandre; Kaefer,Igor L.; Hrbek,Tomas. |
| 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),... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazon Basin; Brazil; Ophidia; Sampling methods; Squamata. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100207 |
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| 谷, 昌幸; 佐藤, 貴之; 近藤, 錬三; Tani, Masayuki; Sato, Takayuki; Kondo, Renzo. |
| 泥炭からの土壌溶液の採取方法が土壌溶液の組成・特徴に及ぼす影響を4つの方法で比較検討した.対象とした泥炭地は,泥炭の分解度と理化学性が異なる霧多布泥炭地と湧洞沼泥炭地の2地点で,各地点において2×2mの方形区内の4カ所から泥炭および土壌溶液を採取した.減圧ポーラスカップ法(PC法),遠心分離法(CF法),振とう水抽出法(WE法),および泥炭地で一般的に用いられている泥炭を採掘した坑に湧出する水を採取する方法(PW法)の4つの溶液採取方法を用いた.1)各地点4カ所の泥炭の全炭素・窒素含量,繊維含量,腐植化度などの分解度指標および理化学性の変動係数は,おおむね20%以下であった.2)土壌溶液の水質および無機イオン濃度は4つの方法で大きく異なった.PC法,CF法,WE法で採取した土壌溶液は,泥炭の分解程度の違いによって水質が大きく変化することが示された.また,溶存有機物の光学的な特性も採水方法の違いにより異なった.3)PW法により採取した溶液のEC,溶存有機炭素濃度などの水質の変動係数は,両地点とも約20%以下であり,最もばらつきが少なかった.4)PC法,CF法およびWE法により採取した溶液の水質の変動係数は,泥炭の理化学性の変動係数を大きく上回る項目が多かった.また,これら3つの方法により採取した溶液の水質および無機イオン濃度は,泥炭に含まれる植物繊維の影響を強く受けていると考えられた. The soil solutions in surface peat soils were collected by using four methods : the peatland water method (PW), by which the seepage water in a pit of peatland was... |
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Palavras-chave: 採取方法; 泥炭; 土壌溶液; 無機イオン組成; 溶存有機物; Dissolved organic matter; Inorganic ion composition; Peat; Sampling methods; Soil solution. |
| Ano: 2003 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2967 |
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| Registros recuperados: 13 | |
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