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Tardigrade remains from lake sediments


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Cromer, L, Gibson, JAE, McInnes, SJ and Agius, JT 2007 , 'Tardigrade remains from lake sediments' , Journal of Paleolimnology, vol. 39, no. 1 , pp. 143-150 , doi: 10.1007/s10933-007-9102-5.

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Remains of tardigrades have rarely been
reported to preserve in sediments, resulting in the
absence of important ecological and biogeographic
information that they could provide. However, a
study of faunal microfossils in Antarctic lake sediment
cores has shown that tardigrade eggs and
occasionally exuvia can be abundant. Eggs from at
least five tardigrade species were identified in sediment
cores from six lakes from across the continent,
with abundances up to 6,000 (g1 dry wt.). It is likely
that the cold temperatures and absence of benthic
grazers in Antarctic lakes results in particularly good
preservation conditions, though it may also be a
function of population density. The conservation of
tardigrade eggs and exuvia in lake sediments enables
a better understanding of paleodistributions and
effects of environmental changes for this phylum
that cannot otherwise be obtained.

Item Type: Article
Authors/Creators:Cromer, L and Gibson, JAE and McInnes, SJ and Agius, JT
Keywords: Tardigrada Antarctica Freshwater lake Biogeography Sediment core Tardigrade eggs Exuvia
Journal or Publication Title: Journal of Paleolimnology
Publisher: Springer
ISSN: 0921-2727
DOI / ID Number: 10.1007/s10933-007-9102-5
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