Sciaridae in lake sediments: indicators of catchment and stream contribution to fossil insect assemblages |
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| Authors: | Oliver Heiri André F Lotter |
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| Institution: | (1) Palaeoecology, Laboratory of Palaeobotany and Palynology, Institute of Environmental Biology, Faculty of Science, Utrecht University, Budapestlaan 4, 3584 CD Utrecht, The Netherlands;(2) Ecological and Environmental Change Research Group, Department of Biology, University of Bergen, Allégaten 41, 5007 Bergen, Norway;(3) The Natural History Collections, University of Bergen, Muséplass 3, 5007 Bergen, Norway |
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| Abstract: | The larval head capsules of Sciaridae (black fungus gnats) are transported into lakes from terrestrial habitats, in most cases
via streams or rivers, and preserve well in lake sediments. The abundance of sciarid remains can provide information on the
importance of terrestrial and running-water input into fossil insect assemblages in lake sediments if examined in relation
to the number of fossils of aquatic insects such as the Chironomidae, Thaumaleidae, Ceratopogonidae, or Simuliidae. Here we
describe fossil head capsules of sciarid larvae and provide an example of how these remains can be used to constrain past
changes in taphonomic processes that influence fossil chironomid records. |
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| Keywords: | Fossil insects Sciaridae Chironomidae Diptera Lake sediments |
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