694 research outputs found
A new class of weighting functions: energy resolution improvement from a shunt inductor.
No full text
Spatial structure of olive groves and scrublands affects Bactrocera oleae abundance a multi-scale analysis
No full textEnvironmentally friendly measures are needed to achieve natural pest control. A relationship between landscape structure and Bactrocera oleae, the main olive grove pest, indicated a general association between complex landscapes and reduced abundance of the insect. In this work we have characterised the relationship between spatial structure of specific land uses and the olive fruit fly abundance at different scales (from 600 to 2000 m radius). We paid special attention to the dominant land use in the studied area, the olive crop, and the surrounding natural land uses. In the landscape analysed the spatial arrangement of olive and scrubland patches showed a gradient of situations from areas with an abundance of olive area distributed in very few patches close to each other to landscapes with less olive area arranged in many patches and with larger scrubland areas. Linear mixed-effects models showed that the abundance of B. oleae is positively related to the proximity of olive patches at all studied scales. However, other landscape characteristics (total area of olive groves and scrublands) were differentially related to pest abundance depending on considered scales. According to the obtained results it is advisable to plan olive groves at a 1000–1500 m radius spatial scale, in which the role of scrublands regarding B. oleae population is favoured. The best planning option for the olive grove landscape is discussed in the “Land sharing-Land sparing” context. © 2016 Gesellschaft für Ökologi
“Low Noise, High Radiation Hardness Front-End Circuits Based Upon an Upgraded JFET Monolithic Process”.
No full text
Antoine Favre, Les Gordiens et Maximins, ou l’Ambition (1589)
No full textRécensions : (1) M. Mastroiani, Studi francesi, 170, 2013 : 443-444; (2) A. Cullière, Bibliothèque d’Humanisme et Renaissance, LXXV, 2013 : 686-687 ; (3) L. Rescia, L’Universo Mondo, 42, 2014 : 64-66.International audienc
L'opera bilingue di François Loubayssin de la Marque : un contributo all'ispanismo francese secentesco
No full textMethodological approach to spatial analysis of agricultural pest dispersal in olive landscapes
No full textThe effectiveness of a Geographical Information Systems cost-distance tool for detecting landscape permeability in relation to the movement of pests in olive landscapes was established. The simplification of agricultural systems is linked to an increased incidence of pests on crops. Therefore, it is important to understand the impact of different land uses surrounding olive groves on pests. In this work, we analysed the effect of the structure of the olive landscape on the movement of two main olive pests—the olive fruit fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae) and the olive moth, Prays oleae (Bernard) (Lepidopetera: Praydidae). We applied linear mixed effects models to analyse the relationship between pest abundance and cost-distance, using different hypotheses to evaluate those land uses that are favourable or unfavourable for the movement of these pests. The results show that this methodology is effective in detecting possible unfavourable land uses with a barrier effect, such as woodland and artificial land uses, and favourable land uses with a corridor effect such as olive groves. Whether other land uses, such as scrubland or riverbanks, act as a barrier or corridor depends on the pest and its life cycle stage. The effect that different land uses have in maintaining low levels of pest populations and ensuring the long-term sustainability of these agricultural systems are discussed. The implications of landscape permeability for the physical structure of the landscape and the dispersal of organisms, and the potential of that landscape to impact the continuous flow of natural processes are also addressed
Managing Risk Mitigation in Urban Expansion Areas of Argentina’s Drylands: The Gap between Perception and Environmental Behaviour
No full textAccessibility to rigorous scientific information to promote risk mitigation measures by citizens is crucial, especially in the context of climate change and extreme weather events. This study focuses on the perception of flood risk and the implementation of mitigation strategies by residents in drylands urban sprawl areas. Risk perception, defined as the subjective assessment of the likelihood and potential consequences of flooding, is a key element of mitigation. While many studies have explored the link between risk perception and behaviour, this research addresses gaps in understanding how public information affects these perceptions and actions. In areas of rapid urban expansion, where regulation often overlooks environmental features, the lack of adequate information poses significant barriers to effective risk mitigation. This research reveals that although residents claim to understand flooding, their descriptions often indicate a lack of understanding of the phenomenon. This ‘passive optimism’ could be mitigated by providing rigorous information and specific technical recommendations. This study highlights the disconnect between residents’ awareness of flood risks and the inadequacy of preventive measures, underlining the importance of targeted information and collaboration between the scientific community, government sectors, and local populations
- …
