Avaliação Ecológica Rápida da Ictiofauna Lacustre do Campus Central da Universidade Federal do Acre

2018 ◽  
Vol 22 (1) ◽  
pp. 37
Author(s):  
Melissa Progênio da Silva ◽  
Diego Viana Melo Lima ◽  
Lisandro Juno Soares Vieira
Keyword(s):  
Fish Community ◽  
Abundant Species ◽  
Ecological Assessment ◽  
The Other ◽  
Emergency Plans ◽  
Ecological Evaluation ◽  
Low Diversity ◽  
Short Time ◽  
Rapid Ecological Assessment ◽  
Lower Constancy

Os ambientes lacustres abrigam grande diversidade faunística, sendo essa composta principalmente por peixes. A aplicação do método AER é uma via mais prática para planos emergenciais, pois à medida que se estuda a fauna de uma área, mesmo que seja em curto prazo de tempo, se tem uma ideia das espécies que a habitam. O presente estudo teve por objetivo realizar uma avaliação ecológica rápida para conhecer a comunidade de peixes existente, nos ambientes lacustres, presentes no campus da Universidade Federal do Acre. As coletas foram realizadas em sete lagos com auxílio de redes-de-emalhar nos períodos de seca e cheia, que são bem evidentes na região. Foram calculados os valores dos índices de riqueza de Jaccard (S), diversidade de Shannon-Wiener (H’), equitabilidade de Pielou (E), dominância de Simpson (D) e constância (C). Foi coletado um total de 317 espécimes, sendo 156 coletados no período chuvoso e 161 no período da seca. A ordem predominante foi Characiformes, com cinco famílias e sete espécies, sendo a família Characidae a mais abundante. As espécies mais abundantes foram a Aequidens tetramerus com 96 indivíduos, sendo a espécie de maior constância (30,15%) e Steindachnerina cf. guentheri com 59 indivíduos e constância de 11,11%. As espécies Moenkhausia oligolepis e Piaractus brachypomus obtiveram menor constância, enquanto que as outras espécies ficaram abaixo de 12%. A avaliação ecológica revelou baixa diversidade, sendo que a sazonalidade não influenciou, significativamente, a composição da ictiofauna.Palavras-chave: Ambientes Lacustres. Diversidade. Peixes.AbstractThe lacustrine environments have relevant fauna diversity, composed mainly by fish. The application of the AER method is a more practical way for emergency plans, as the fauna of an area is studied even in a short time, may offer an idea of the species that inhabit there. The objective of this study is rapid ecological assessment lacustrian icthyofauna from the Central Campus of the Federal University of Acre to know the existing fish community. Collections were performed in seven sampling lakes with the aid of gillnets in dry and rainy periods, which are very evident in the region. Jaccard (S), Shannon-Wiener (H ‘) diversity, Pielou (E), Simpson (D) and constancy (C) equitability values were calculated. A total of 317 specimens were collected, 156 collected in the rainy season and 161 in the dry season. The predominant order was Characiformes, with five families and seven species, the highest contribution from Characidae. The most abundant species were: the Aequidens tetramerus with 96 individuals, being the species of greater constancy (30.15%) and Steindachnerina cf. guentheri with 59 individuals and constancy of 11.11%. The species Moenkhausia oligolepis and Piaractus brachypomus obtained lower constancy, while the other species were below 12%. The ecological evaluation revealed low diversity, and the seasonality did not significant influence the ichthyofauna composition.Keywords: Lacustrine environments. Diversity. Fish.

Stromatoporoids from the Famennian (Devonian) Wabamun Formation, Normandville oilfield, north–central Alberta, Canada

1988 ◽  
Vol 62 (03) ◽  
pp. 411-419 ◽  
Author(s):  
Colin W. Stearn
Keyword(s):  
Patch Reef ◽  
Abundant Species ◽  
The Other ◽  
North Central ◽  
Biotic Crisis

Stromatoporoids are the principal framebuilding organisms in the patch reef that is part of the reservoir of the Normandville field. The reef is 10 m thick and 1.5 km2in area and demonstrates that stromatoporoids retained their ability to build reefal edifices into Famennian time despite the biotic crisis at the close of Frasnian time. The fauna is dominated by labechiids but includes three non-labechiid species. The most abundant species isStylostroma sinense(Dong) butLabechia palliseriStearn is also common. Both these species are highly variable and are described in terms of multiple phases that occur in a single skeleton. The other species described areClathrostromacf.C. jukkenseYavorsky,Gerronostromasp. (a columnar species), andStromatoporasp. The fauna belongs in Famennian/Strunian assemblage 2 as defined by Stearn et al. (1988).

Der Erzieher als Manager

2019 ◽  
Vol 95 (4) ◽  
pp. 517-530
Author(s):  
Diana Lohwasser
Keyword(s):  
Educational Process ◽  
The Other ◽  
Critical View ◽  
Other Hand ◽  
The One ◽  
Short Time ◽  
Time Diagnosis

Abstract The Educator as a Manager. A Critical View In the following article tasks and motifs of the educator as manager are described. It is clear that there are other educator metaphors and associated behaviors. To some extent, the actions of the different educator metaphors overlap, but they differ in their purpose and perspective on the educational process and the person to be educated. First, a short time diagnosis is made, which describes the context of this metaphor of the educator as manager. Subsequently, on the one hand, the various motifs, tasks and objectives of an educator as manager are discussed. On the other hand, it is asked if it is possible in the current discourse to take a different perspective on the educational process.

scholarly journals Amide-Type Substrates in the Synthesis of N-Protected 1-Aminomethylphosphonium Salts

Catalysts ◽  
2021 ◽  
Vol 11 (5) ◽  
pp. 552
Author(s):  
Dominika Kozicka ◽  
Paulina Zieleźny ◽  
Karol Erfurt ◽  
Jakub Adamek
Keyword(s):  
Reaction Times ◽  
The Other ◽  
Hydroxyl Group ◽  
Other Hand ◽  
Step Procedure ◽  
Higher Temperature ◽  
Short Time ◽  
Work Up

Herein we describe the development and optimization of a two-step procedure for the synthesis of N-protected 1-aminomethylphosphonium salts from imides, amides, carbamates, or lactams. Our “step-by-step” methodology involves the transformation of amide-type substrates to the corresponding hydroxymethyl derivatives, followed by the substitution of the hydroxyl group with a phosphonium moiety. The first step of the described synthesis was conducted based on well-known protocols for hydroxymethylation with formaldehyde or paraformaldehyde. In turn, the second (substitution) stage required optimization studies. In general, reactions of amide, carbamate, and lactam derivatives occurred at a temperature of 70 °C in a relatively short time (1 h). On the other hand, N-hydroxymethylimides reacted with triarylphosphonium salts at a much higher temperature (135 °C) and over longer reaction times (as much as 30 h). However, the proposed strategy is very efficient, especially when NaBr is used as a catalyst. Moreover, a simple work-up procedure involving only crystallization afforded good to excellent yields (up to 99%).

scholarly journals COVID-19: systematic learning across boundaries requires a conceptual agreement

2021 ◽  
pp. 140349482110270
Author(s):  
Knut Ole Sundnes ◽  
Geir Sverre Braut
Keyword(s):  
Public Health ◽  
Knowledge Base ◽  
External Validity ◽  
Evaluation Research ◽  
The Other ◽  
Basic Knowledge ◽  
Early Publication ◽  
Number Of Publications ◽  
Short Time

The COVID-19 epidemic has revealed a shortage of basic knowledge and understanding of pandemics, especially regarding their dynamics and how to contain them. The results are a host of governments’ decrees and instructions, one replacing the other, often within the same week. It has further, in a truly short time, resulted in an overwhelming number of publications, many of them prioritising early publication over quality. This commentary addresses the concept of structured research related to disasters and how the use of endorsed guidelines will facilitate well-designed evaluation research with improved rigour and external validity, even if applied retrospectively. The outcome should be a solidified knowledge base. Further, the important role of public health efforts is to be highlighted, as their role has proved crucial during the COVID-19 pandemic.

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 The REAL Team: A Cooperative Student Training Program in Rapid Ecological Assessment

BioScience ◽  
2001 ◽  
Vol 51 (10) ◽  
pp. 874 ◽  
Author(s):  
ELIZABETH J. FARNSWORTH ◽  
KENT E. HOLSINGER ◽  
LESLIE J. MEHRHOFF ◽  
NANCY MURRAY ◽  
JUDY PRESTON ◽  
...  
Keyword(s):  
Training Program ◽  
Ecological Assessment ◽  
The Real ◽  
Student Training ◽  
Rapid Ecological Assessment

scholarly journals Siphonophora from the coast of Brazil (17ºS to 24ºS)

1991 ◽  
Vol 39 (1) ◽  
pp. 61-69 ◽  
Author(s):  
Catarina Ramis Nogueira ◽  
Sérgio dos Reis Oliveira Jr
Keyword(s):  
East Coast ◽  
Coastal Upwelling ◽  
Mesh Size ◽  
Abundant Species ◽  
Factorial Analysis ◽  
The Other ◽  
Trophic Interaction ◽  
Principal Axes ◽  
Bank System

This work is based on the analysis of 99 zooplankton samples collected during the Oceanographic Expedition "ESPÍRITO SANTO I", held along the east coast of Brazil, between Cabo Frio and Abrolhos Archipelago, an area characterized by the occurrence of coastal upwelling, from July to September 1984. Zooplankton was collected with vertical plankton net hauls of 250 µm mesh size in the upper 200 meters layer. A total of twenty one species of Siphonophora was observed, two of which were identified as being physonect and the other as calycophorans. Specific diversity close to the shore and at the neighborhood of the Vitória-Trindade Bank System, showed smaller values, in comparison with those in the oceanic regions. Factorial analysis was used in order to access the changes observed in the population of the eleven most abundant species. The first two principal axes represented the influence of the nearshore - offshore gradient and the role of trophic interaction, accounted for 60% of the total variance of the data.

scholarly journals The hydraulic management of the Barra Bonita reservoir (SP, Brazil) as a factor influencing the temporal succession of its fish community

2007 ◽  
Vol 67 (3) ◽  
pp. 433-445 ◽  
Author(s):  
ML. Petesse ◽  
M. Petrere Jr. ◽  
RJ. Spigolon
Keyword(s):  
Fish Species ◽  
Fish Community ◽  
Abundant Species ◽  
Anthropogenic Stress ◽  
Reservoir Level ◽  
Species List ◽  
Adaptation Capacity ◽  
Reproductive Structures ◽  
Temporal Succession ◽  
Reproductive Compensation

The temporal succession of fish communities allows evaluating the environmental conditions and the adaptation capacity of the fish species to anthropogenic stress in reservoirs. The fish community at Barra Bonita reservoir was sampled in two different periods of the year (dry and rainy) and in three different areas of the reservoir (fluvial, transition, and lentic). The species list was compared to another four lists, trying to detect the transformations of the fish community for the last 15 years. In order to evaluate the adaptation of the present fish community to the hydraulic management of reservoir, the trophic and reproductive structures were studied. Temporal succession analysis shows little change in fish richness of the communities. The number of fish species varies between 23 and 39 for a total of 68 registered species. From this, 27 can be considered constant, 14 accessory and 27 accidental; the main differences observed were for Anostomidae, Loricariidae and Characidae families. In relation to the hydraulic management, we found a fish community stabilized and adapted to environmental stress. This is characterized by the dominance of small-sized fish species of opportunistic diet and high reproductive compensation (r-strategists). The overlap of biological cycles of the most abundant species with the reservoir level fluctuations points to the period from September to March-April as critical for reproductive success and only the species with partial reproductive strategy or parental care are best succeeded. These results, interpreted in the context of the reservoir aging process, indicate that Barra Bonita reservoir is entering a transition phase, between the colonization and aging stages.

scholarly journals UDDER INFECTION WITH STREPTOCOCCI OF THE SCARLET FEVER TYPE

1928 ◽  
Vol 47 (6) ◽  
pp. 945-956 ◽  
Author(s):  
F. S. Jones ◽  
Ralph B. Little
Keyword(s):  
Scarlet Fever ◽  
Small Town ◽  
Raw Milk ◽  
The Other ◽  
Natural Conditions ◽  
Severe Attack ◽  
General Reaction ◽  
Original Process ◽  
Secondary Infections ◽  
Short Time

The clinical and bacteriological findings in two cows the udders of which became infected under natural conditions with hemolytic streptococci of the scarlet fever type are discussed. One of the cows was found in a herd supplying raw milk to a small town where a milkborne outbreak of scarlet fever had occurred a short time before. When small numbers of the streptococcus obtained from this case were injected into the udder of a normal cow severe mastitis accompanied by a well marked general reaction resulted. Evidence leads to the conclusion that a severe attack of mastitis due to this organism in one quarter does not sufficiently immunize the other quarters to protect them completely since the streptococcus can be readily implanted in them. The secondary infections were much milder than the original process.

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