Caspar A. Hallmann
Radboud University Nijmegen
Publications 19
#1Caspar A. Hallmann (Radboud University Nijmegen)H-Index: 7
Last.Eelke Jongejans (Radboud University Nijmegen)H-Index: 30
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#1S.T.E. Lommen (University of Fribourg)H-Index: 8
#2Caspar A. Hallmann (Radboud University Nijmegen)H-Index: 7
Last.Maja Šćepanović (University of Zagreb)H-Index: 4
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To better manage invasive populations, it is vital to understand the environmental drivers underlying spatial variation in demographic performance of invasive individuals and populations. The invasive common ragweed, Ambrosia artemisiifolia, has severe adverse effects on agriculture and human health, due to its vast production of seeds and allergenic pollen. Here, we identify the scale and nature of environmental factors driving individual performance of A. artemisiifolia, and assess their relat...
#1Marjolein Bruijning (Radboud University Nijmegen)H-Index: 3
#2Marco D. Visser (Princeton University)H-Index: 8
Last.Eelke Jongejans (Radboud University Nijmegen)H-Index: 30
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#1Caspar A. Hallmann (Radboud University Nijmegen)H-Index: 7
#2Martin SorgH-Index: 1
Last.Thomas HörrenH-Index: 1
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Global declines in insects have sparked wide interest among scientists, politicians, and the general public. Loss of insect diversity and abundance is expected to provoke cascading effects on food webs and to jeopardize ecosystem services. Our understanding of the extent and underlying causes of this decline is based on the abundance of single species or taxonomic groups only, rather than changes in insect biomass which is more relevant for ecological functioning. Here, we used a standardized pr...
Anthropogenic changes to the landscape such as fertilization and mowing schemes have been correlated with goslings obtaining a higher weight gain during the first weeks of their life, which in turn increases breeding success and survival at the adult stage. As goose numbers rise, conflicts with farmers become stronger as the birds use agricultural sites for foraging. In this study, habitat choice for individually marked greylag geese from four different rearing conditions, categorized by their t...