NDLI: Community structure, trophic position and reproductive mode of soil and bark-living oribatid mites in an alpine grassland ecosystem

Content Provider	Springer Nature Link
Author	Fischer, Barbara M. Schatz, Heinrich Maraun, Mark
Copyright Year	2010
Abstract	The community structure, stable isotope ratios (15N/14N, 13C/12C) and reproductive mode of oribatid mites (Acari, Oribatida) were investigated in four habitats (upper tree bark, lower tree bark, dry grassland soil, forest soil) at two sites in the Central Alps (Tyrol, Austria). We hypothesized that community structure and trophic position of oribatid mites of dry grassland soils and bark of trees are similar since these habitats have similar abiotic characteristics (open, dry) compared with forest soil. Further, we hypothesized that derived taxa of oribatid mites reproducing sexually dominate on the bark of trees since species in this habitat consume living resources such as lichens. In contrast to our hypothesis, the community structure of oribatid mites differed among grassland, forest and bark indicating the existence of niche differentiation in the respective oribatid mite species. In agreement with our hypothesis, sexually reproducing taxa of oribatid mites dominated on the bark of trees whereas parthenogenetic species were more frequent in soil. Several species of bark-living oribatid mites had stable isotope signatures that were similar to lichens indicating that they feed on lichens. However, nine species that frequently occurred on tree bark did not feed on lichens according to their stable isotope signatures. No oribatid mite species could be ascribed to moss feeding. We conclude that sexual reproduction served as preadaptation for oribatid mites allowing them to exploit new habitats and new resources on the bark of trees. Abiotic factors likely are of limited importance for bark-living oribatid mites since harsh abiotic conditions are assumed to favor parthenogenesis.
Starting Page	221
Ending Page	237
Page Count	17
File Format	PDF
ISSN	01688162
Journal	Experimental & Applied Acarology
Volume Number	52
Issue Number	3
e-ISSN	15729702
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-05-21
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Stable isotopes Central Alps Tree bark Reproductive mode Life Sciences Animal Ecology Entomology Animal Genetics and Genomics Animal Systematics/Taxonomy/Biogeography
Content Type	Text
Resource Type	Article
Subject	Ecology Medicine Insect Science

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Positive correlation of trophic level and proportion of sexual taxa of oribatid mites (Acari: Oribatida) in alpine soil systems

Community structure, trophic position and reproductive mode of soil and bark-living oribatid mites in an alpine grassland ecosystem

The trophic structure of bark-living oribatid mite communities analysed with stable isotopes (15N, 13C) indicates strong niche differentiation

Regional factors rather than forest type drive the community structure of soil living oribatid mites (Acari, Oribatida)

Convergent evolution of aquatic life by sexual and parthenogenetic oribatid mites

Litter quality indirectly influences community composition, reproductive mode and trophic structure of oribatid mite communities: a microcosm experiment

Changes in soil oribatid communities associated with conversion from conventional to organic agriculture

Taxonomic distribution of defensive alkaloids in Nearctic oribatid mites (Acari, Oribatida)

Oribatid mite communities along an elevational gradient in Sairme gorge (Caucasus)

Community structure, trophic position and reproductive mode of soil and bark-living oribatid mites in an alpine grassland ecosystem

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