scholarly journals CAPTURE EFFICIENCY AND PRESERVATION ATTRIBUTES OF DIFFERENT FLUIDS IN PITFALL TRAPS

2006 ◽  
Vol 34 (1) ◽  
pp. 159-162 ◽  
Author(s):  
Martin H. Schmidt ◽  
Yann Clough ◽  
Wenke Schulz ◽  
Anne Westphalen ◽  
Teja Tscharntke
Keyword(s):  
Capture Efficiency ◽  
Pitfall Traps

scholarly journals Analysis of capture efficiency of pitfall traps for the National Ecosystem Survey of Korea

2021 ◽  
Author(s):  
Dosung Kim ◽  
Young-Bok Cho ◽  
Jung Lark Kim ◽  
Eui jeong Hong ◽  
Chulgoo Kim ◽  
...  
Keyword(s):  
Capture Efficiency ◽  
Pitfall Traps ◽  
Ecosystem Survey

Capture efficiency of pitfall traps is highly affected by sampling interval

2010 ◽  
Vol 136 (2) ◽  
pp. 206-210 ◽  
Author(s):  
Jens Schirmel ◽  
Sarah Lenze ◽  
Daniel Katzmann ◽  
Sascha Buchholz
Keyword(s):  
Sampling Interval ◽  
Capture Efficiency ◽  
Pitfall Traps

scholarly journals Do covers influence the capture efficiency of pitfall traps?

2009 ◽  
Vol 106 (4) ◽  
pp. 667-671 ◽  
Author(s):  
Sascha BUCHHOLZ ◽  
Karsten HANNIG
Keyword(s):  
Capture Efficiency ◽  
Pitfall Traps

The Structure of the Trap and Trap-Building Behavior in Callistoleon-Manselli New (Neuroptera, Myrmeleontidae)

1993 ◽  
Vol 41 (1) ◽  
pp. 77 ◽  
Author(s):  
T Matsura ◽  
RL Kitching
Keyword(s):  
Prey Capture ◽  
Capture Efficiency ◽  
Pitfall Traps ◽  
Building Behavior ◽  
Ad Libitum ◽  
Building Behaviour ◽  
Advanced Development

Larvae of the antlion Callistoleon manselli New build pitfall traps that have attached radiating furrows. In order to evaluate this unique trap-building behaviour from an evolutionary viewpoint, we analysed the shape of,traps in the field, then examined the process of trap construction and the efficiency of the pitfalls in prey capture. Larvae of C manselli construct the radiating furrows after building the central pit. Larvae provided with food ad libitum tend not to construct furrows at all. Capture efficiency for the pits with furrows was greater than for pits without furrows. The pitfall traps constructed by C. manselli evidently represent a more advanced development than the simple pits of other species.

scholarly journals Crustacea, Isopoda, Oniscidea Latreille, 1802: new continent record and distribution extension in Brazil

Check List ◽  
2010 ◽  
Vol 6 (2) ◽  
pp. 217 ◽  
Author(s):  
Mariana Juventina Magrini ◽  
Paula Beatriz Araujo ◽  
Marcio Uehara-Prado
Keyword(s):  
Rio Grande ◽  
Sao Paulo ◽  
The State ◽  
Southeastern Brazil ◽  
Pitfall Traps ◽  
São Paulo ◽  
Undescribed Species ◽  
Rio Grande Do Sul ◽  
Serra Do Mar ◽  
First Time

Terrestrial Isopods were sampled in four protected Atlantic Forest areas located in Serra do Mar, state of São Paulo, southeastern Brazil. A total of 2,217 individuals of six species (Atlantoscia sp., Benthana werneri, Pseudodiploexochus tabularis, Pudeoniscus obscurus, Styloniscus spinosus and Trichorhina sp.) were captured in pitfall traps. The exotic species S. spinosus is recorded for the first time for the Americas. Another introduced species, P. tabularis, previously recorded only from the state of Rio Grande do Sul, had its geographic distribution extended to the state of São Paulo. The most abundant isopods in this study belong to an undescribed species of Atlantoscia.

scholarly journals Wood Pastures: A Transitional Habitat between Forests and Pastures for Dung Beetle Assemblages

Forests ◽  
2020 ◽  
Vol 12 (1) ◽  
pp. 25
Author(s):  
László Somay ◽  
Viktor Szigeti ◽  
Gergely Boros ◽  
Réka Ádám ◽  
András Báldi
Keyword(s):  
Functional Group ◽  
Animal Health ◽  
Habitat Type ◽  
Dung Beetle ◽  
Dung Beetles ◽  
Livestock Grazing ◽  
Pitfall Traps ◽  
Assemblage Composition ◽  
Beetle Assemblages

Wood pastures are home to a variety of species, including the dung beetle. Dung beetles are an important functional group in decomposition. Specifically, in terms of livestock manure, they not only contribute to nutrient cycling but are key players in supporting human and animal health. Dung beetles, however, are declining in population, and urgent recommendations are needed to reverse this trend. Recommendations need to be based on solid evidence and specific habitats. Herein, we aimed to investigate the role of an intermediate habitat type between forests and pastures. Wood pastures are key areas for dung beetle conservation. For this reason, we compared dung beetle assemblages among forests, wood pastures, and grasslands. We complemented this with studies on the effects of dung type and season at three Hungarian locations. Pitfall traps baited with cattle, sheep, or horse dung were used in forests, wood pastures, and pasture habitats in spring, summer, and autumn. Dung beetle assemblages of wood pastures showed transient characteristics between forests and pastures regarding their abundance, species richness, Shannon diversity, assemblage composition, and indicator species. We identified a strong effect of season and a weak of dung type. Assemblage composition proved to be the most sensitive measure of differences among habitats. The conservation of dung beetles, and the decomposition services they provide, need continuous livestock grazing to provide fresh dung, as well as the maintenance of wood pastures where dung beetle assemblages typical of forests and pastures can both survive.

scholarly journals A Numerical Study of the Effect of Particle Size on Particle Deposition on Turbine Vanes and Blades

2021 ◽  
Vol 13 (5) ◽  
pp. 168781402110178
Author(s):  
Zhengang Liu ◽  
Weinan Diao ◽  
Zhenxia Liu ◽  
Fei Zhang
Keyword(s):  
Particle Size ◽  
Particle Deposition ◽  
Numerical Study ◽  
Stokes Number ◽  
Capture Efficiency ◽  
Particle Capture ◽  
Factors Affecting ◽  
Pressure Surface ◽  
Deposition Area ◽  
Turbine Vanes

Particle deposition could decrease the aerodynamic performance and cooling efficiency of turbine vanes and blades. The particle motion in the flow and its temperature are two important factors affecting its deposition. The size of the particle influences both its motion and temperature. In this study, the motion of particles with the sizes from 1 to 20 μm in the first stage of a turbine are firstly numerically simulated with the steady method, then the particle deposition on the vanes and blades are numerically simulated with the unsteady method based on the critical viscosity model. It is discovered that the particle deposition on vanes mainly formed near the leading and trailing edge on the pressure surface, and the deposition area expands slowly to the whole pressure surface with the particle size increasing. For the particle deposition on blades, the deposition area moves from the entire pressure surface toward the tip with the particle size increasing due to the effect of rotation. For vanes, the particle capture efficiency increases with the particle size increasing since Stokes number and temperature of the particle both increase with its size. For blades, the particle capture efficiency increases firstly and then decreases with the particle size increasing.

scholarly journals Influence of Pre-Sowing Operations on Soil-Dwelling Fauna in Soybean Cultivation

Agriculture ◽  
2021 ◽  
Vol 11 (6) ◽  
pp. 474
Author(s):  
Darija Lemic ◽  
Ivana Pajač Živković ◽  
Marija Posarić ◽  
Renata Bažok
Keyword(s):  
Cover Crop ◽  
Soil Fauna ◽  
Biological Indicators ◽  
Conventional Tillage ◽  
Pitfall Traps ◽  
Beneficial Insects ◽  
The Family ◽  
Negative Effect ◽  
Natural Equilibrium ◽  
Positive Effect

The aim of this study was to determine the effects of different pre-sowing operations on the abundance and composition of total soil fauna in soybean cultivation, with special attention to carabids as biological indicators of agroecosystem quality. The study was conducted in central Croatia with six different pre-sowing activities (cover crop, mulching, ploughing, glyphosate, fertiliser removal, conventional tillage). Pitfall traps were used to collect soil fauna in April, June and September. After determining the abundance and composition of the fauna, their coenological characteristics were calculated and statistical analysis was performed. During the study, 7836 individuals of soil fauna were collected. The composition consisted of 84% beneficial, 8% harmful and 8% indifferent fauna. Class Insecta was the most numerous with a proportion of 56%, with most members of the family Carabidae (1622 individuals), followed by the class Arachnida (40%). The number of fauna collected was influenced by the interaction between pre-seeding intervention and sampling date. Pre-seeding interventions that did not involve soil activities did not affect the number and composition of soil fauna at the beginning of vegetation. Mechanical interventions in the soil and warmer and drier weather have a negative effect on the number and composition of soil fauna. As the season progresses, the influence of pre-sowing activities on soil fauna in soybean crops decreases. It seems that a reduction in mechanical activities in the shallow seed layer of the soil has a positive effect on species richness or diversity. Of particular note is the large proportion of beneficial insects that currently colonise the study area, characterising soil richness and stable natural equilibrium.

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