TY - JOUR
T1 - Testing the applicability of regional IUCN Red List criteria on ladybirds (Coleoptera, Coccinellidae) in Flanders (north Belgium)
T2 - opportunities for conservation
AU - Adriaens, Tim
AU - San Martin y Gomez, Gilles
AU - Bogaert, Johan
AU - Crevecoeur, Luc
AU - Beuckx, Jean-Pierre
AU - Maes, Dirk
PY - 2015
Y1 - 2015
N2 - 1. Red Lists assess the extinction risk of species and are an importanttool to prioritise species conservation and management measures. Worldwide,quantitative IUCN criteria are used to estimate the threat status ofspecies at the regional level.2. In Flanders (north Belgium), about 70 000 distribution records of ladybirdswere collected in 36% of all the grid cells (1 9 1 km2) since 1990 during alarge-scale citizen-science project.3. Applying the IUCN criteria to the 36 resident ‘conspicuous’ ladybirds inFlanders resulted in two Regionally Extinct species, three Endangered species andsix Vulnerable species. A further seven species were considered Near Threatenedand the remaining 15 species (39%) were assessed as Least Concern. Three specieswere classified as Data deficient. Using the Red List status, we delineated ladybirdhotspots that were mainly located in grid cells with large areas of Natura2000 sites.4. For calculating a distribution trend, we advocate the use of a high grid cellresolution (e.g. 1 9 1 km2 or 5 9 5 km2).5. The ladybird data set from Flanders provides evidence that IUCN RedList criteria can be applied to this charismatic, but relatively under-surveyedinsect group. For estimating the geographic range, the use of extent of occurrenceinstead of area of occupancy is advisable when the survey coverage is relativelylow. We discuss the opportunities of the availability of a ladybird RedList for regional conservation measures.
AB - 1. Red Lists assess the extinction risk of species and are an importanttool to prioritise species conservation and management measures. Worldwide,quantitative IUCN criteria are used to estimate the threat status ofspecies at the regional level.2. In Flanders (north Belgium), about 70 000 distribution records of ladybirdswere collected in 36% of all the grid cells (1 9 1 km2) since 1990 during alarge-scale citizen-science project.3. Applying the IUCN criteria to the 36 resident ‘conspicuous’ ladybirds inFlanders resulted in two Regionally Extinct species, three Endangered species andsix Vulnerable species. A further seven species were considered Near Threatenedand the remaining 15 species (39%) were assessed as Least Concern. Three specieswere classified as Data deficient. Using the Red List status, we delineated ladybirdhotspots that were mainly located in grid cells with large areas of Natura2000 sites.4. For calculating a distribution trend, we advocate the use of a high grid cellresolution (e.g. 1 9 1 km2 or 5 9 5 km2).5. The ladybird data set from Flanders provides evidence that IUCN RedList criteria can be applied to this charismatic, but relatively under-surveyedinsect group. For estimating the geographic range, the use of extent of occurrenceinstead of area of occupancy is advisable when the survey coverage is relativelylow. We discuss the opportunities of the availability of a ladybird RedList for regional conservation measures.
U2 - 10.1111/icad.12124
DO - 10.1111/icad.12124
M3 - A1: Web of Science-article
SN - 1752-458X
VL - 8
SP - 404
EP - 417
JO - Insect Conservation and Diversity
JF - Insect Conservation and Diversity
IS - 5
ER -