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Differing impacts of two major plant invaders on urban plant-dwelling spiders (Araneae) during flowering season

Bauer, Tobias; Bäte, Daria Alison; Kempfer, Fabian; Schirmel, Jens

Abstract:
Plant invasions can have major impacts on ecosystems and influence global species diversity. In Central Europe, Himalayan balsam (Impatiens glandulifera) and American goldenrods (Solidago canadensis and S. gigantea) are important invaders often establishing dense and homogeneous stands, especially in urban and other disturbed habitats. We investigated their impacts on plant-dwelling spiders (abundance, family structure, guild structure) and potential spider prey items during flowering season within an urbanized landscape using a paired design comparing invaded and native reference vegetation plots. In general, flowering American goldenrods and Himalayan balsam had no significant impacts on the spider family composition. Invasion of American goldenrods further had no effect on total spider abundance and potential prey item abundance. In contrast, goldenrods showed a significantly increased crab spider (Thomisidae) abundance while being less inhabited by web builders. Himalayan balsam negatively influenced free hunters and running crab spider (Philodromidae) abundance, while we found no effects on other groups and total spider abundance. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000129853
Veröffentlicht am 03.03.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Geographie und Geoökologie (IFGG)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 1387-3547, 1573-1464
KITopen-ID: 1000129853
Erschienen in Biological invasions
Verlag Springer
Band 457
Schlagwörter Impatiens glandulifera; Novel ecosystems; Philodromidae; Solidago canadensis; Solidago gigantea; Thomisidae; Urban management
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