Temporal changes in cladoceran assemblages subjected to a low calcium environment: combining the sediment record with long-term monitoring data
Lakewater calcium (Ca) decline affects softwater lakes across the Canadian Shield. Ca decline is one consequence of acid deposition, and has impeded biological recovery in formerly acidified lakes. Reduced Ca availability may advantage taxa better adapted to low Ca waters. Crosson Lake in south-central Ontario (Canada) has an extensive monitoring record and has experienced strong Ca decline since the late 1970s, recently falling below 1.5 mg L−1, a threshold value for some large Daphnia O.F. Müller, 1785 taxa. Paleolimnological analysis of the sedimentary cladoceran assemblages revealed that changes associated with the Ca decline began in the early 1970s. Relative abundances of the jelly-clad Holopedium glacialis Rowe, 2007 and the Daphnia pulex complex increased while Ca-sensitive members of the Daphnia longispina complex decreased. Zooplankton net hauls (1981–2010) corroborate the paleolimnological analysis, revealing that increases in the D. pulex complex were due to Daphnia catawba Coker, 1926 (a taxon tolerant of low Ca). Lakewater Ca, dissolved organic carbon and total phosphorus explain a significant amount of variation within the cladoceran community; however, the relationship between Ca concentration and the daphniid community was most apparent. The Crosson Lake paleolimnological and direct monitoring data may describe ecological changes that are also occurring in many other softwater lakes across the Canadian Shield and elsewhere.
KeywordsCladocera Paleolimnology Acidification Calcium decline Holopedium Daphnia
- Appleby, P. G., 2001. Chronostratigraphic techniques in recent sediments. In Last, W. M. & J. P. Smol (eds), Tracking Environmental Change Using Lake Sediments, Volume 1: Developments in Paleoenvironmental Research. Kluwer Academic Publishers, Springer, The Netherlands: 171–203.Google Scholar
- Cairns, A., 2010. Field assessments and evidence of impacts of calcium decline on Daphnia (Crustacea, Anomopoda) in Canadian Shield lakes. M.Sc. thesis, Department of Biology, York University, Toronto.Google Scholar
- Couture, R. M., H. de Wit, K. Tominaga, P. Kiuru & I. Markelov, 2015. Oxygen dynamics in a boreal lake responds to long-term changes in climate, ice phenology, and DOC inputs. Journal of Geophysical Research: Biogeosciences 120: 2441–2456.Google Scholar
- Hebert, P. D. N., 1995. The Daphnia of North America: an illustrated fauna—CD-ROM. Cyber Natural Software. University of Guelph.Google Scholar
- Jeziorski, A., N. D. Yan, A. M. Paterson, A. M. DeSellas, M. A. Turner, D. S. Jeffries, B. Keller, R. C. Weeber, D. K. McNicol, M. E. Palmer, K. McIver, K. Arseneau, B. K. Ginn, B. F. Cumming & J. P. Smol, 2008. The widespread threat of calcium decline in fresh waters. Science 322: 1374–1377.CrossRefPubMedGoogle Scholar
- Jeziorski, A., A. J. Tanentzap, N. D. Yan, A. M. Paterson, M. E. Palmer, J. B. Korosi, J. A. Rusak, M. T. Arts, W. Keller, R. Ingram, A. Cairns & J. P. Smol, 2015. The jellification of north temperate lakes. Proceedings of the Royal Society B 282: 20142449. doi:10.1098/rspb.2014.2449.CrossRefPubMedPubMedCentralGoogle Scholar
- Keller, W., J. M. Gunn & N. D. Yan, 1999. Acid rain – perspectives on lake recovery. Journal of Aquatic Ecosystem Stress and Recovery 6: 2107–2216.Google Scholar
- Korhola, A. & M. Rautio, 2001. Cladocera and other branchiopod crustaceans. In Smol, J. P., H. J. B. Birks & W. M. Last (eds), Tracking Environmental Change Using Lake Sediments. Volume 4: Zoological Indicators. Kluwer Academic Publishers, Dordrecht, The Netherlands: 4–41.Google Scholar
- Korosi, J. B. & J. P. Smol, 2012a. An illustrated guide to the identification of cladoceran subfossils from lake sediments in northeastern North America: part 1 – the Daphniidae, Leptodoridae, Bosminidae, Polyphemidae, Holopedidae, Sididae, and Macrothricidae. Journal of Paleolimnology 48: 571–586.CrossRefGoogle Scholar
- Monteith, D. T., J. L. Stoddard, C. D. Evans, H. A. de Wit, M. Forsius, T. Høgåsen, A. Wilander, B. L. Skjelkvåle, D. S. Jeffries, J. Vuorenmaa, B. Keller, J. Kopácek & J. Vesely, 2007. Dissolved organic carbon trends resulting from changes in atmospheric deposition chemistry. Nature 450: 537–540.CrossRefPubMedGoogle Scholar
- Oksanen, J., F. G. Blanchet, R. Kindt, P. Legendre, P. R. Michin, R. B. O’Hara, G. L. Simpson, P. Solymos, M. H. H. Stevens, & H. Wagner, 2014. vegan: Community Ecology Package. R package version 2.2-0. http://CRAN.R-project.org/package=vegan.
- Paterson, A. M., J. G. Winter, K. H. Nicholls, B. J. Clark, C. W. Ramcharan, N. D. Yan & K. M. Somers, 2008. Long-term changes in phytoplankton composition in seven Canadian Shield lakes in response to multiple anthropogenic stressors. Canadian Journal of Fisheries and Aquatic Sciences 65: 846–861.CrossRefGoogle Scholar
- R Development Core Team. 2014. R: A language and environment for statistical computing. R Foundation for Statistical Computing, Vienna. http://www.R-project.org/.
- Rowe, C. L., S. J. Adamowicz & P. D. N. Hebert, 2007. Three new cryptic species of the freshwater zooplankton genus Holopedium (Crustacea: Branchiopoda: Ctenopoda), revealed by genetic methods. Zootaxa 1656: 1–49.Google Scholar
- Smirnov, N. N., 1996. Cladocera: the Chydorinae and Sayciinae (Chydoridae) of the world. In Dumont, H. J. (ed.), Guide to the identification of the microinvertebrates of the continental waters of the world. SPB Academy Publishing, Amsterdam.Google Scholar
- Stoddard, J. L., D. S. Jeffries, A. Lukewille, T. A. Clair, P. J. Dillon, C. T. Driscoll, M. Forsius, M. Johnannessen, J. S. Kahl, J. H. Kellogg, A. Kemp, J. Mannio, D. T. Monteith, P. S. Murdoch, S. Patrick, A. Rebsdorf, B. L. Skjelkvale, M. P. Stainton, T. Traaen, H. van Dam, K. E. Webster, J. Wieting & A. Wilander, 1999. Regional trends in aquatic recovery from lake acidification in North America and Europe. Nature 401: 575–578.CrossRefGoogle Scholar
- Sweetman, J. N. & J. P. Smol, 2006. A guide to the identification of cladoceran remains (Crustacea: Branchiopoda) in Alaskan lake sediments. Archiv für Hydrobiologie (Supplement) 151: 353–394.Google Scholar
- Szeroczyńska, K. & K. Sarmaja-Korjonen, 2007. Atlas of Subfossil Cladocera from Central and Northern Europe. Friends of the Lower Vistula Society, Swiecie.Google Scholar
- Yan, N. D., K. M. Somers, R. E. Girard, A. M. Paterson, B. Keller, C. W. Ramcharan, J. A. Rusak, R. Ingram, G. E. Morgan & J. Gunn, 2008. Long-term trends in zooplankton of Dorset, Ontario lakes: the probable interactive effects of changes in pH, TP, DOC and predators. Canadian Journal of Fisheries and Aquatic Sciences 65: 862–877.CrossRefGoogle Scholar