Claim · model-written summary
Dictyna spider densities were 46-74 times higher in invaded than in native grasslands, a pattern persisting over 6 years of monitoring.
DictynaVerbatim
e0“Dictyna densities were 46-74 times higher in C. macw/asa-invaded than native grasslands”
e1“a pattern that persisted over 6 years of monitoring”
Title
Invasive plant architecture alters trophic interactions by changing predator abundance and behavior
Dean Dean 2016
Other claims from this paper (7)
- Association Native web spiders were collectively 38 times more abundant in grasslands invaded by spotted knapweed than in uninvaded grasslands.
- Association Dictyna webs on the invasive plant were 2.9-4.0 times larger than webs on the native substrate Achillea millefolium.
- Association Dictyna webs on the invasive plant generated 2.0-2.3 times higher total prey captures than webs on Achillea millefolium.
- Observation Dictyna webs on the invasive plant captured 4.2 times more large prey items.
- Association Dictyna were nearly twice as likely to reproduce on the invasive plant as on native substrates.
- Association Invasion by the plant and its effects on vegetation architecture increased Dictyna predation on invertebrate prey more than 89-fold.
- Observation Spider abundance increase was accompanied by a large shift in web spider community structure, driven mainly by Dictyna.