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Journal of Paleolimnology

, Volume 48, Issue 3, pp 587–622 | Cite as

An illustrated guide to the identification of cladoceran subfossils from lake sediments in northeastern North America: part 2—the Chydoridae

  • Jennifer B. Korosi
  • John P. Smol
Original paper

Abstract

The diverse members of the cladoceran family Chydoridae are typically well preserved in lake sediments, although identifications of chydorids using subfossil remains still differ from identifications using whole animals. To address this issue, we analyzed and photographed chydorid subfossil remains from lakes in eastern Canada and northeastern USA and compiled this information into an illustrated identification guide for this region, which is characterized by high chydorid species richness. We provide detailed descriptions of commonly recovered body parts for each species, including headshields, carapaces, postabdomens, and postabdominal claws. We describe 29 chydorid taxa, discuss the distribution of these taxa within North America, and compare morphology with related species described from Alaska or northern Europe, the only other regions for which subfossil chydorid identification guides are available.

Keywords

Cladocera Chydoridae Subfossils Paleolimnology Identification guide Northeastern North America 

Notes

Acknowledgments

We acknowledge A. Jeziorski, J. Kurek, L. Mosscrop, and A. Sorce for providing photographs of some cladoceran remains, and comments on the manuscript. In addition, we thank K. Szeroczynska and an anonymous reviewer for providing comments that greatly improved the quality of the manuscript. This research was funded by Natural Science and Engineering Research Council of Canada (NSERC) grants to JPS and JBK.

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Copyright information

© Springer Science+Business Media B.V. 2012

Authors and Affiliations

  1. 1.Paleoecological Environmental Assessment and Research Lab (PEARL), Department of BiologyQueen’s UniversityKingstonCanada

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