caa a22 4500 445892889 CHVBK 20180317145622.0 cr unu---uuuuu 170323e20110301xx s 000 0 eng 10.1007/s10750-010-0556-5 doi (NATIONALLICENCE)springer-10.1007/s10750-010-0556-5 Distribution of cladoceran assemblages across environmental gradients in Nova Scotia (Canada) lakes [Elektronische Daten] [Jennifer Korosi, John Smol] Cladocera sub-fossils have widely been recognized as useful environmental indicators. Nevertheless, investigations into the distribution and environmental controls on Cladocera are scarce in North America, hindering their use in paleolimnological studies. Here, we examine cladoceran assemblage and size structure from the surface sediments of 49 soft-water Nova Scotia (Canada) lakes to provide ecological data on this key taxonomic group, the first study of its kind for the northern Atlantic coast of North America. We found that Nova Scotia lakes contain a diverse chydorid assemblage, but were generally dominated by the smaller pelagic herbivore Eubosmina longispina. Daphnia, a larger pelagic herbivore, was relatively uncommon in these lakes. Redundancy analyses (RDA) identified maximum lake depth and dissolved organic carbon (DOC) as the environmental variables that best explained the structuring of these cladoceran assemblages. Generalized linear models were then used to better characterize the ecological associations for individual taxa. Body size of the bosminids in these lakes was significantly correlated only to total nitrogen (TN), with larger bosminids in lakes with lower TN values. Bosminid mucro length, an indication of invertebrate and fish predation pressure, was significantly related to TN, maximum lake depth, and lake surface area. The ecological information provided by this study should assist the interpretation of paleolimnological assessments of environmental change in these and other similar lakes. Springer Science+Business Media B.V., 2010 Paleolimnology nationallicence Cladocera nationallicence Nova Scotia lakes nationallicence Assemblage nationallicence Size structure nationallicence Korosi Jennifer Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, ON, Canada aut Smol John Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, ON, Canada aut Hydrobiologia Springer Netherlands 663/1(2011-03-01), 83-99 0018-8158 663:1<83 2011 663 10750 https://doi.org/10.1007/s10750-010-0556-5 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-010-0556-5 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Korosi Jennifer Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, ON, Canada aut NATIONALLICENCE 700 1- Smol John Paleoecological Environmental Assessment and Research Lab (PEARL), Department of Biology, Queen's University, K7L 3N6, Kingston, ON, Canada aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 663/1(2011-03-01), 83-99 0018-8158 663:1<83 2011 663 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer