Reproducció i desenvolupament de la mallerenga blava (Cyanistes caeruleus): conseqüències de la invasió de la formiga argentina (Linepithema humile) en la xarxa tròfica del bosc mediterrani

Estany-Tigerström, David
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We investigated whether the Argentine ant (Linepithema humile) invasion modifies the trophic web of the sclerophyllous Mediterranean forests to the point that impacts co-occurring bird communities. We studied if the invaded cork oak forests represent an ecological trap for the blue tit (Cyanistes caeruleus). The invasive ant dramatically impacts native ant communities in the areas studied. The Argentine ant alters the food supplies for the breeding foliage gleaning birds, basically through a depletion of the caterpillar availability in cork oaks. Nevertheless, the Argentine ant invasion does not affect the overall insectivorous birds’ communities. The detailed study of the reproductive dynamics of the blue tit do not provide evidences enough to assure that the blue tit is caught in an ecological trap in the Argentine ant invaded forests ​
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