caa a22 4500 606161600 CHVBK 20210128100635.0 cr unu---uuuuu 210128e20150601xx s 000 0 eng 10.1007/s10526-015-9648-5 doi (NATIONALLICENCE)springer-10.1007/s10526-015-9648-5 Shelterbelts in agricultural landscapes enhance ladybeetle abundance in spillover from cropland to adjacent habitats [Elektronische Daten] [Zhaoke Dong, Fang Ouyang, Fei Lu, Feng Ge] The natural enemies of herbivorous pests in cropping systems may relocate to adjacent habitats in response to declining habitat quality in heterogeneous landscapes. In this study, we measured the cross-edge spillover of ladybeetles from wheat fields to shelterbelts, and tested how landscape variables at various spatial scales influence ladybeetle populations. We conducted a large-scale sampling study of agricultural landscapes differing in structural complexity during 2012 and 2013. The effects of landscape variables (i.e., landscape diversity and the percentage of woody habitats) on the ladybeetle abundance were investigated. Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the dominant ladybeetle species. The abundances of ladybeetles in spillover were positively correlated with the percentage of woody area, and negatively correlated with landscape diversity and edge density of crop habitats. It indicates that a low diversity landscape with a large area of shelterbelts supports larger ladybeetle abundance in spillover compared with a high diversity landscape with a limited area of shelterbelts. By contrast, greater numbers of within-field ladybeetles were associated with landscape diversity increase. Landscape features at the spatial scale of 2.5-3km could best predict the abundance of ladybeetles in spillover, whereas the best prediction model for ladybeetle abundance within field was at the 1.5km scale. These results suggest that the landscape variables influence ladybeetle abundance differently in spillover and within fields. The introduction of shelterbelts in the agricultural landscape could enhance the conservation of ladybeetle populations. International Organization for Biological Control (IOBC), 2015 Coccinellid nationallicence Dispersal nationallicence Natural enemies nationallicence Winter wheat nationallicence Woody border nationallicence Agroforestry nationallicence Dong Zhaoke State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut Ouyang Fang State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut Lu Fei College of Plant Protection, Agricultural University of Hebei, 071001, Baoding, Hebei, China aut Ge Feng State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut BioControl Springer Netherlands 60/3(2015-06-01), 351-361 1386-6141 60:3<351 2015 60 10526 https://doi.org/10.1007/s10526-015-9648-5 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s10526-015-9648-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Dong Zhaoke State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 700 1- Ouyang Fang State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 700 1- Lu Fei College of Plant Protection, Agricultural University of Hebei, 071001, Baoding, Hebei, China aut NATIONALLICENCE 700 1- Ge Feng State Key Laboratory of Integrated Management of Pest Insects and Rodents, Institute of Zoology, Chinese Academy of Sciences, 100101, Beijing, China aut NATIONALLICENCE 773 0- BioControl Springer Netherlands 60/3(2015-06-01), 351-361 1386-6141 60:3<351 2015 60 10526