12 research outputs found
Ballooning of spiders (Araneae) in Switzerland: General Results from an Eleven-Year Survey
Do spiders respond to global change? A study on the phenology of ballooning spiders in Switzerland
Assessing the risk of primary infection of cereals by barley yellow dwarf virus in autumn in the Rennes basin of France
Representation of Potato Virus Y control strategies in current and past extension literature
The aphid-vectored Potato virus Y (PVY) is currently seen as an important limiting factor in the production of potatoes in many countries. Using a contentanalysis approach, we investigated the German extension literature for recommendations regarding the control of PVY. Media included articles from periodicals addressing farmers and agricultural textbooks published in the last five decades (1955–2004). In the current literature (1995–2004), the clearly dominating strategy was found to be insecticidal control, although this strategy has been subject to some criticism in the scientific literature. Over the last five decades we also found a strongly increasing representation of insecticidal strategies. Furthermore, over this period of time, information diversity, measured as the number of different strategies proposed per article or per textbook, decreased consistently
Use of LIDAR in landslide investigations: A review
This paper presents a short history of the appraisal of laser scanner
technologies in geosciences used for imaging relief by high-resolution
digital elevation models (HRDEMs) or 3D models. A general overview
of light detection and ranging (LIDAR) techniques applied to landslides
is given, followed by a review of different applications of LIDAR
for landslide, rockfall and debris-flow. These applications are classified
as: (1) Detection and characterization of mass movements; (2) Hazard
assessment and susceptibility mapping; (3) Modelling; (4) Monitoring.
This review emphasizes how LIDARderived HRDEMs can be used to investigate
any type of landslides. It is clear that such HRDEMs are not yet
a common tool for landslides investigations, but this technique has
opened new domains of applications that still have to be developed