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Author |
Smoron, S. |
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Title |
Dynamics of the mountain meadow yielding in period of 25 years after fertilization abandonment |
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Report |
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Year |
2013 |
Publication |
Water-Environment-Rural Areas |
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132 |
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111-120 |
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CropM |
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ITP Falenty |
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MA @ admin @ |
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2073 |
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Author |
Mansouri, M. |
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Title |
Modeling and Prediction of Time-Varying Environmental Data Using Advanced Bayesian Methods |
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Book Chapter |
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Year |
2013 |
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Abbreviated Journal |
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Pages |
112-137 |
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CropM |
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IGI Global |
Place of Publication |
Hershey PA |
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Masegosa, P.; Villacorta, C.; Cruz-Corona, S.; Garcia-Cascales, M.; Lamata, J.; Verdegay, A. |
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Exploring Innovative and Successful Applications of Soft Computing |
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no |
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Call Number |
MA @ admin @ |
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2625 |
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Author |
Dáder, B.; Plaza, M.; Fereres, A.; Moreno, A. |
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Title |
Flight behaviour of vegetable pests and their natural enemies under different ultraviolet-blocking enclosures |
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Journal Article |
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Year |
2015 |
Publication |
Annals of Applied Biology |
Abbreviated Journal |
Ann. Appl. Biol. |
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Volume |
167 |
Issue |
1 |
Pages |
116-126 |
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Keywords |
agricultural pests; insect orientation; natural enemies; photoselective enclosures; uv light; aphidius-colemani; plastic films; myzus-persicae; insect pests; frankliniella-occidentalis; trialeurodes-vaporariorum; spectral efficiency; encarsia-formosa; protect crops; greenhouse |
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Abstract |
Ultraviolet (UV) radiation, particularly in the UV-A + B range (280-400 nm) is a fraction of the solar spectrum that regulates almost every aspect of insect behaviour, including orientation towards hosts, alighting, arrestment and feeding behaviour. To study the role of UV radiation on the flight activity of five insect species of agricultural importance (pests Myzus persicae, Bemisia tabaci and Tuta absoluta, and natural enemies Aphidius colemani and Sphaerophoria rueppellii), one-chamber tunnels were covered with six cladding materials with different light transmittance properties ranging from 2% to 83% UV and 54% to 85% photosynthetically active radiation (PAR). Inside each tunnel, insects were released from tubes placed in a platform suspended from the ceiling. Specific targets varying with insect species were placed at different distances from the platform. Evaluation parameters were designed for each insect and tested separately. The ability of insects to leave the platform was assessed, as well as the number of captures, eggs or mummies in each target, either sticky traps or plants. Our results suggest differences in flight activity among insect species and UV-blocking nets. The UV-opaque film drastically prevented aphids, and whiteflies from flying outside the tubes whereas T. absoluta, syrphids and parasitoids were not affected. Aphid flight behaviour was affected by the UV-opaque film compared to the other nets, especially in the furthest target of the tunnel. Fewer aphids reached distant traps under UV-absorbing nets, and significantly more aphids could fly to the end of tunnels covered with non-UV-blocking materials. Orientation of B. tabaci and T. absoluta was also negatively affected by the UV-opaque film although in a different trend. Unlike aphids, differences in B. tabaci captures were mainly found in the closest targets. UV transmittance did not have any effects on parasitoids, and S. rueppellii, implying cues other than visual for these insects under our experimental conditions. Further effects of photoselective enclosures on greenhouse pests and their natural enemies are discussed. |
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English |
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ISSN |
0003-4746 |
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Notes |
CropM |
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no |
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Call Number |
MA @ admin @ |
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4555 |
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Author |
Dumont, B.; Leemans, V.; Mansouri, M.; Bodson, B.; Destain, J.-P.; Destain, M.-F. |
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Title |
Parameter identification of the STICS crop model, using an accelerated formal MCMC approach |
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Journal Article |
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Year |
2014 |
Publication |
Environmental Modelling & Software |
Abbreviated Journal |
Env. Model. Softw. |
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Volume |
52 |
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Pages |
121-135 |
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Keywords |
crop model; parameter estimation; bayes; stics; dream; global sensitivity-analysis; simulation-model; nitrogen balances; bayesian-approach; generic model; wheat; prediction; water; optimization; algorithm |
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This study presents a Bayesian approach for the parameters’ identification of the STICS crop model based on the recently developed Differential Evolution Adaptive Metropolis (DREAM) algorithm. The posterior distributions of nine specific crop parameters of the STICS model were sampled with the aim to improve the growth simulations of a winter wheat (Triticum aestivum L) culture. The results obtained with the DREAM algorithm were initially compared to those obtained with a Nelder-Mead Simplex algorithm embedded within the OptimiSTICS package. Then, three types of likelihood functions implemented within the DREAM algorithm were compared, namely the standard least square, the weighted least square, and a transformed likelihood function that makes explicit use of the coefficient of variation (CV). The results showed that the proposed CV likelihood function allowed taking into account both noise on measurements and heteroscedasticity which are regularly encountered in crop modelling. (C) 2013 Elsevier Ltd. All rights reserved. |
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ISSN |
1364-8152 |
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CropM |
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no |
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Call Number |
MA @ admin @ |
Serial |
4520 |
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Author |
Sandhu, H.; Porter, J.R.; Wratten, S. |
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Title |
Experimental assessment of ecosystem services in agriculture |
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Book Chapter |
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Year |
2013 |
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Abbreviated Journal |
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Volume |
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Issue |
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Pages |
122-135 |
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Keywords |
CropM; |
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Wratten, S.; Sandhu, H.; Cullen, R.; Costanza, R. |
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Series Title |
Ecosystem Services in Agricultural and Urban Landscapes |
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Call Number |
MA @ admin @ |
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2786 |
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