Differential responses of herbivores and herbivory to management in temperate European beech

PloS One
Martin M GossnerWolfgang W Weisser

Abstract

Forest management not only affects biodiversity but also might alter ecosystem processes mediated by the organisms, i.e. herbivory the removal of plant biomass by plant-eating insects and other arthropod groups. Aiming at revealing general relationships between forest management and herbivory we investigated aboveground arthropod herbivory in 105 plots dominated by European beech in three different regions in Germany in the sun-exposed canopy of mature beech trees and on beech saplings in the understorey. We separately assessed damage by different guilds of herbivores, i.e. chewing, sucking and scraping herbivores, gall-forming insects and mites, and leaf-mining insects. We asked whether herbivory differs among different forest management regimes (unmanaged, uneven-aged managed, even-aged managed) and among age-classes within even-aged forests. We further tested for consistency of relationships between regions, strata and herbivore guilds. On average, almost 80% of beech leaves showed herbivory damage, and about 6% of leaf area was consumed. Chewing damage was most common, whereas leaf sucking and scraping damage were very rare. Damage was generally greater in the canopy than in the understorey, in particular for chewing and sc...Continue Reading

References

Mar 10, 2000·Science·O E SalaD H Wall
May 17, 2006·Trends in Ecology & Evolution·Karina Boege, Robert J Marquis
May 26, 2006·Journal of Chemical Ecology·Jack R DonaldsonRichard L Lindroth
Aug 1, 2007·Ecology Letters·Hervé Jactel, Eckehard G Brockerhoff
Oct 28, 2008·Oecologia·Saul A CunninghamMatthew J Colloff
Feb 4, 2010·Conservation Biology : the Journal of the Society for Conservation Biology·Yoan PailletRisto Virtanen
Sep 21, 2010·The Journal of Ecology·Andreas SchuldtJason Fridley

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Methods Mentioned

BETA
scraping
PCA

Software Mentioned

lme4
lmer
multcomp

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