[The French Airborne Pollen Network: current situation and prospects for improvement]. / Le réseau français de surveillance aéropollinique: situation présente et perspectives d'optimisation.

The french network of aeropalynology includes traps very close together and vast areas without any trap as well. A study was launched in order to optimise this network, without the number of traps increasing too much. Five criteria are successively reviewed to rationalise the spatial cover. Equi-distance of sites has to be balanced by the number of concerned people. But the need for having long time series is incentive to delete only as a last resort the traps which are reliable for a long time. Moreover, apart from the general network, some local or regional features make indispensable a trap in such-and-such a place (health resort), or justify a higher density of traps in such-and-such an area (the Rhône-Alpes concerning ragweed, the Mediterranean South concerning cypress).

[Quality control 2001]. / Contrôle qualité 2001.

The quality control comprises of accounts and the identification of ten taxas on blind blades. The article gives the list of these pollens and details the answers. The rate of exact recognitions is 81.34% and 52 analysts out of 54 took part in the quality control.

[Allergo-Pollen Bulletin. "National Bulletin" assessment 2001]. / Bulletin allergo-pollinique. Bilan "Bulletin National" 2001.

The article gives the assessment of the weekly results published in the National Bulletin of RNSA: 35 bulletins were published, 46 sites sent results. Of the tables indicate: the dates of pollen traps departure to record counting for each site 2001, the number of bulletins published over four years, a comparison over six years and one 28 weeks principal period of number of weeks lost for the publication. A histogram shows the evolution of the number of results published per week in 2000 and 2001.

[Influence of the height position of two pollen traps in Amiens]. / Influence de la position en hauteur de deux capteurs à Amiens.

The object of this study is to compare the results obtained in 2001 with those of the previous years and to continue the study started two years ago, making it possible to compare the daily pollinic accounts observed on two pollen traps located at the same place (Faculty of Science in Amiens), but at different heights. The primary trap is located on the roof of faculty (approximately 15 m of the ground) and the other on the ground of the same building.