Limits...
How generalist herbivores exploit belowground plant diversity in temperate grasslands.

Wallinger C, Staudacher K, Schallhart N, Mitterrutzner E, Steiner EM, Juen A, Traugott M - Mol. Ecol. (2013)

Bottom Line: Belowground herbivores impact plant performance, thereby inducing changes in plant community composition, which potentially leads to cascading effects onto higher trophic levels and ecosystem processes and productivity.Poaceae, although assumed to be most preferred, had an intermediate position.This needs to be considered when analysing soil herbivore-plant interactions.

View Article: PubMed Central - PubMed

Affiliation: Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.

Show MeSH

Related in: MedlinePlus

Manly's alpha preference indices (mean ± SE) for the seven target plants index (mean ± SE) consumed by Agriotes larvae on the six different sampling dates over the season in grassland 1 (a) and 2 (b) in 2008. The dashed line displays the 1/m threshold, Where m is the number of available plant species; values exceeding this threshold indicate preference, those below it avoidance for the respective plant species.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4285316&req=5

fig04: Manly's alpha preference indices (mean ± SE) for the seven target plants index (mean ± SE) consumed by Agriotes larvae on the six different sampling dates over the season in grassland 1 (a) and 2 (b) in 2008. The dashed line displays the 1/m threshold, Where m is the number of available plant species; values exceeding this threshold indicate preference, those below it avoidance for the respective plant species.

Mentions: The preference of the Agriotes larvae for specific plant taxa changed over the season (full-season data set only; Fig. 4): P. lanceolata was preferred throughout the investigated period in both grassland sites, except for one sampling date in August in grassland 1. Taraxacum officinale and A. millefolium were preferred most of the time, whereas for T. repens and T. pratense the opposite was true. Poaceae, albeit highly abundant, were preferred at a few dates only, in grassland 1 (May–July and October) and Apiaceae were not liked at all. When comparing the general pattern of specific preferences on the targeted plant taxa between the two grasslands, there was more alternation in the dietary choice of wireworms in grassland 1 so that in the end all target plants but the Apiaceae were preferred at least at one date. In grassland 2, the preference pattern was more uniformly with a preference for P. lanceolata during the entire season and an avoidance of the Poaceae and Apiaceae.


How generalist herbivores exploit belowground plant diversity in temperate grasslands.

Wallinger C, Staudacher K, Schallhart N, Mitterrutzner E, Steiner EM, Juen A, Traugott M - Mol. Ecol. (2013)

Manly's alpha preference indices (mean ± SE) for the seven target plants index (mean ± SE) consumed by Agriotes larvae on the six different sampling dates over the season in grassland 1 (a) and 2 (b) in 2008. The dashed line displays the 1/m threshold, Where m is the number of available plant species; values exceeding this threshold indicate preference, those below it avoidance for the respective plant species.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4285316&req=5

fig04: Manly's alpha preference indices (mean ± SE) for the seven target plants index (mean ± SE) consumed by Agriotes larvae on the six different sampling dates over the season in grassland 1 (a) and 2 (b) in 2008. The dashed line displays the 1/m threshold, Where m is the number of available plant species; values exceeding this threshold indicate preference, those below it avoidance for the respective plant species.
Mentions: The preference of the Agriotes larvae for specific plant taxa changed over the season (full-season data set only; Fig. 4): P. lanceolata was preferred throughout the investigated period in both grassland sites, except for one sampling date in August in grassland 1. Taraxacum officinale and A. millefolium were preferred most of the time, whereas for T. repens and T. pratense the opposite was true. Poaceae, albeit highly abundant, were preferred at a few dates only, in grassland 1 (May–July and October) and Apiaceae were not liked at all. When comparing the general pattern of specific preferences on the targeted plant taxa between the two grasslands, there was more alternation in the dietary choice of wireworms in grassland 1 so that in the end all target plants but the Apiaceae were preferred at least at one date. In grassland 2, the preference pattern was more uniformly with a preference for P. lanceolata during the entire season and an avoidance of the Poaceae and Apiaceae.

Bottom Line: Belowground herbivores impact plant performance, thereby inducing changes in plant community composition, which potentially leads to cascading effects onto higher trophic levels and ecosystem processes and productivity.Poaceae, although assumed to be most preferred, had an intermediate position.This needs to be considered when analysing soil herbivore-plant interactions.

View Article: PubMed Central - PubMed

Affiliation: Mountain Agriculture Research Unit, Institute of Ecology, University of Innsbruck, Technikerstraße 25, 6020 Innsbruck, Austria.

Show MeSH
Related in: MedlinePlus