@article{fdi:010094420,
  title = {{M}icrohabitat more than ecosystem type determines the trophic position of springtail species},
  author = {{Y}ang, {J}. {B}. and {P}u, {G}. {Z}. and {J}üds, {M}. and {E}rktan, {A}mandine and {S}cheu, {S}. and {L}u, {J}. {Z}.},
  editor = {},
  language = {{ENG}},
  abstract = {{T}rophic plasticity may intensify competition among soil animal species and reduce their high diversity, which is often maintained by trophic niche differentiation and vertical microstratification in soils. {S}oil decomposers such as {C}ollembola can shift their trophic niche with changing microhabitats across soil depths (vertical variation) and between different ecosystem types (horizontal variation), but these variations need further investigation. {H}ere, we compared the stable isotope values of 27 {C}ollembola species between litter and soil layers in 40 forest stands, comprising monocultures of {E}uropean beech, {N}orway spruce, {D}ouglas fir, or mixtures of {E}uropean beech with either of the two conifer species. {T}he results showed that the delta 15{N} values of {C}ollembola within species were uniformly higher in soil than in the litter layer irrespective of forest type. {T}his increase correlated with the biomass of {G}ram-negative bacteria but not with that of fungi. {T}he delta 13{C} values of {C}ollembola were significantly enriched in beech forests, but were similar in {D}ouglas fir and {N}orway spruce forests indicating similar effects of the two coniferous species on the basal resource use of {C}ollembola. {O}verall, the results suggest that {C}ollembola shift their diet to consume local resources available in the respective soil layer they colonize, with bacteria playing a more important role in driving variations in their trophic positions than previously assumed. {B}y contrast, the consistent trophic position of {C}ollembola between ecosystem types suggest access to similar food sources in the soil microhabitat, despite large changes in aboveground vegetation type. {O}verall this study suggests that changes in ecosystem types has little influence on the resources accessible to {C}ollembola which presumably selectively feed on specific resources in the soil microhabitat. {B}y contrast, variations in resource types and soil microhabitats across soil depth more strongly affect the trophic niche of {C}ollembola, which requires plasticity to adapt to their diet.},
  keywords = {{C}ollembola ; {T}rophic niche ; {V}ertical stratification ; {S}table isotopes ; {F}agus sylvatica ; {P}seudotsuga menziesii ; {P}icea abies ; {ALLEMAGNE}},
  booktitle = {},
  journal = {{S}oil {B}iology and {B}iochemistry},
  volume = {209},
  numero = {},
  pages = {109912 [9 p.]},
  ISSN = {0038-0717},
  year = {2025},
  DOI = {10.1016/j.soilbio.2025.109912},
  URL = {https://www.documentation.ird.fr/hor/fdi:010094420},
}