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Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes

Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes

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Prüfsumme: MD5:7bc48b61a21473ac09571e5bbf566bdd

BJERRING, Rikke, Eloy BÉCARES, Steven DECLERCK, Elisabeth GROSS, Lars-Anders HANSSON, Timo KAIRESALO, Mirva NYKÄNEN, Anna HALKIEWICZ, Ryszard KORNIJÓW, José M. CONDE-PORCUNA, Miltiadis SEFERLIS, Tiina NOGES, Brian MOSS, Susanne LILDAL AMSINCK, Bent VAD ODGAARD, Erik JEPPESEN, 2009. Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes. In: Freshwater Biology. 54(11), pp. 2401-2417. ISSN 0046-5070. eISSN 1365-2427. Available under: doi: 10.1111/j.1365-2427.2009.02252.x

@article{Bjerring2009Subfo-6962, title={Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes}, year={2009}, doi={10.1111/j.1365-2427.2009.02252.x}, number={11}, volume={54}, issn={0046-5070}, journal={Freshwater Biology}, pages={2401--2417}, author={Bjerring, Rikke and Bécares, Eloy and Declerck, Steven and Gross, Elisabeth and Hansson, Lars-Anders and Kairesalo, Timo and Nykänen, Mirva and Halkiewicz, Anna and Kornijów, Ryszard and Conde-Porcuna, José M. and Seferlis, Miltiadis and Noges, Tiina and Moss, Brian and Lildal Amsinck, Susanne and Vad Odgaard, Bent and Jeppesen, Erik} }

Bécares, Eloy Noges, Tiina Gross, Elisabeth Lildal Amsinck, Susanne Declerck, Steven Moss, Brian deu Jeppesen, Erik Vad Odgaard, Bent First publ. in: Freshwater Biology 54 (2009), 11, pp. 2401 2417 Hansson, Lars-Anders Noges, Tiina Nykänen, Mirva Kornijów, Ryszard Vad Odgaard, Bent 1. Changes in cladoceran subfossils in the surface sediments of 54 shallow lakes were studied along a European latitude gradient (36 68°N). Multivariate methods, such as regression trees and ordination, were applied to explore the relationships between cladoceran taxa distribution and contemporary environmental variables, with special focus on the impact of climate.<br />2. Multivariate regression tree analysis showed distinct differences in cladoceran community structure and lake characteristics along the latitude gradient, identifying three groups: (i) northern lakes characterised by low annual mean temperature, conductivity, nutrient concentrations and fish abundance, (ii) southern, macrophyte rich, warm water lakes with high conductivity and high fish abundance and (iii) Mid-European lakes at<br />intermediate latitudes with intermediate conductivities, trophic state and temperatures.<br />3. Large-sized, pelagic species dominated a group of seven northern lakes with low conductivity, where acid-tolerant species were also occasionally abundant. Small-sized, benthic-associated species dominated a group of five warm water lakes with high conductivity. Cladoceran communities generally showed low species-specific preferences for habitat and environmental conditions in the Mid-European group of lakes. Taxon richness was low in the southern-most, high-conductivity lakes as well as in the two northern-most sub-arctic lakes.<br />4. The proportion of cladoceran resting eggs relative to body shields was high in the northern lakes, and linearly (negatively) related to both temperature and Chl a, indicating that both cold climate (short growing season) and low food availability induce high ephippia production.<br />5. Latitude and, implicitly, temperature were strongly correlated with conductivity and nutrient concentrations, highlighting the difficulties of disentangling a direct climate signal from indirect effects of climate, such as changes in fish community structure and humanrelated impacts, when a latitude gradient is used as a climate proxy. Future studies should<br />focus on the interrelationships between latitude and gradients in nutrient concentration and conductivity. Kairesalo, Timo application/pdf Halkiewicz, Anna Conde-Porcuna, José M. Moss, Brian Bécares, Eloy Seferlis, Miltiadis Declerck, Steven Hansson, Lars-Anders Gross, Elisabeth Seferlis, Miltiadis Nykänen, Mirva Bjerring, Rikke Subfossil Cladocera in relation to contemporary environmental variables in 54 Pan-European lakes Kornijów, Ryszard Lildal Amsinck, Susanne Jeppesen, Erik Kairesalo, Timo Halkiewicz, Anna 2011-03-24T17:30:27Z deposit-license Conde-Porcuna, José M. 2009 2011-03-24T17:30:27Z Bjerring, Rikke

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