Spatial sampling strategy MODIRISK

MODIRISK Kick-off-meeting Basis for sampling strategy Grid of 10X10 km = 326 cells Three samples per grid cell = 978 samples Take into consideration: → Major biotopes → Seasonal variation → Import risk

MODIRISK Kick-off-meeting Proposed procedure Identify key habitats based on Corine LC classes by aggregating urban, agriculture, natural and import risk classes. Calculate total surface per aggregated class Assign proportional number of sample points to aggregated class. Generate appropriate number of random sampling points within each class. Randomly assign sampling points within each class to two sampling seasons. Geocode and assign sample sites per team.

MODIRISK Kick-off-meeting Aggregation of CORINE LC data CORINE includes 50 classes divided in five groups: → Artificial surfaces including urban and industrial → Agriculture areas → Forest and semi natural areas → Wetlands → Water bodies

MODIRISK Kick-off-meeting Corine data – 50 classes

MODIRISK Kick-off-meeting Class aggregation (1) Urban biotopes (2) Land in the agriculture cycle (3) Natural terrestrial habitats (4) Risk of introduction areas: ports, airports, dump sites, moors and heat land, inland marshes, salt marshes (5) Areas excluded from sample: industrial and commercial units, roads, mines and mineral extraction sites, construction sites, sparsely vegetated areas (6) Water bodies

MODIRISK Kick-off-meeting Corine - 6 aggregated classes

MODIRISK Kick-off-meeting Sample size per aggregated class ClassPixelsPercentageSamples Urban769, %173 Agriculture2,514, %564 Natural888, %199 Specific56,4791.3%13 Secondary103,4112.4%23 Water bodies28,2850.6%6 TOTAL4,360, %978 In blue = automated random assignment In red = manual attribution in selected areas

MODIRISK Kick-off-meeting 173 random urban sampling points

MODIRISK Kick-off-meeting 564 random agri sampling points

MODIRISK Kick-off-meeting 199 random natural sampling points

MODIRISK Kick-off-meeting Non-random sampling points Not yet included in map 42 sampling points to be allocated in areas representing a particular risk of introduction: ports, airports, dump sites, moors and heat land, inland marshes, salt marshes. Additional samplings should also be conducted in other selected areas: → Zoos and safari parks (list available) → Second hand tire import/storage (list to be established) → Protected areas involving presence of large numbers of migratory birds (list available)

MODIRISK Kick-off-meeting Sample: institute / year / season

MODIRISK Kick-off-meeting Sample per institute Rough division by province: → ITG ( ): Antwerp, Limburg, Brabant → KBIN (293): Oost Vlaanderen, West Vlaanderen, Brabant → UCL (365): Hainaut, Namur, Luxembourg Needs reassessment !!!

MODIRISK Kick-off-meeting Data base Flexibility to re-allocate sampling areas Geocode random sampling points to nearest relevant feature to ease sampling: road access, street names, house numbers, … UTM numbering grid cells according to standard

MODIRISK Kick-off-meeting Web based MODIRISK survey map Online map (Google map) with status of field survey per team Public access: important dissemination purpose because most urban samples will be conducted in house gardens Link to entomological data base  future link with biodiversity data base Password protected centralized data entry using Palmtop: → Field forms → Entomology forms → Cross check forms Generate addresses in urban areas to contact prior to sampling