Landscape-scale mass-action of spiders explains early-season immigration rates in crops
Context Early-season immigration into arable fields by natural enemies is key for effective biocontrol, but little is known about the mechanisms underlying immigration processes. Objectives Here we test the mass action hypothesis for ballooning spiders, stating that local immigration rates are positively related to the amount of spiders in the surrounding landscape. Methods Immigration rates of spiders were assessed by sticky traps in remnant vegetation, in arable land 25–125 m from remnant...[Show more]
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