Distribution of ground-dwelling arthropods across landscapes with intensive agriculture in temperate areas

Ecological Indicators

J.M.R. Wiggers¹  C.J.M. Musters²  G.R. de Snoo³ 

[1] Corresponding author.;Institute of Environmental Sciences, Leiden University, PO Box 9518, 2300 RA Leiden, the Netherlands;Plant Ecology and Nature Conservation Group, Wageningen University, Droevendaalsesteeg 3a, 6708 PB Wageningen, the Netherlands;

关键词: Pitfalls;    Insects;    Spiders;    Spatial distribution;    Body size;    Illinois;   

DOI  :  

来源: DOAJ

【 摘 要 】

The idea that land use in the surroundings may affect the abundance of arthropods on a location plays an important role in the argument that agriculture is the prime cause of the recently discovered general decline of insects. We studied the abundance of ground-dwelling arthropods in agricultural fields along a gradient of increasing distance from (semi)natural areas and in relation to landscape complexity in both the North America (Illinois, USA) and Europe (The Netherlands) using pitfalls. Our results showed that the total abundance did not change with distance when we controlled for vegetation height and landscape complexity around the sample locations. Vegetation height affected abundance positively in crop land and negatively in grassland. Landscape complexity only affected abundance when it was measured in a 6000 m radius around sample location, not at lower levels of scale. We conclude that an effect of increasing landscape complexity may be expected when that is done on a large enough scale.

【 授权许可】

Unknown