caa a22 4500 445891564 CHVBK 20180317145618.0 cr unu---uuuuu 170323e20111101xx s 000 0 eng 10.1007/s10750-011-0888-9 doi (NATIONALLICENCE)springer-10.1007/s10750-011-0888-9 Implications of climate change for Daphnia in alpine lakes: predictions from long-term dynamics, spatial distribution, and a short-term experiment [Elektronische Daten] [Janet Fischer, Mark Olson, Craig Williamson, Jennifer Everhart, Paula Hogan, Jeremy Mack, Kevin Rose, Jasmine Saros, Jeffery Stone, Rolf Vinebrooke] Alpine lakes may be particularly useful as sentinels of climate change because they are highly sensitive to environmental conditions. To explore the potential biotic consequences of climate change in these systems, we conducted paleo- and neoecological observational studies, as well as a short-term experiment to examine Daphnia responses to changing environmental conditions in Rocky Mountain alpine lakes. Our analysis of a sediment core from Emerald Lake representing two periods from the Holocene revealed a significant positive relationship between the abundance of Daphnia remains and fossil Aulacoseira lirata, a diatom associated with deeper mixing depths. In addition, we detected a significant increase in mean Daphnia density in the long-term record (1991-2005) from Pipit Lake, a trend that correlated well with increases in mean surface temperature. In our survey of Daphnia in 10 lakes in the Canadian Rocky Mountains, Daphnia abundance was positively correlated with both dissolved organic carbon concentration and temperature. Finally, our short-term incubation experiment demonstrated significant effects of physical conditions (i.e., temperature and/or UV radiation) and water chemistry on the juvenile growth rate of Daphnia. Overall, our findings highlight the sensitivity of Daphnia to changes in mixing depth, water temperature, and dissolved organic matter, three limnological variables that are highly sensitive to changes not only in air temperature, but also to precipitation and location of the treeline in alpine catchments. Thus, we conclude that Daphnia abundance could serve as a powerful sentinel response to climate change in alpine lakes of the Rocky Mountains. Springer Science+Business Media B.V., 2011 Alpine zooplankton nationallicence Lakes as sentinels nationallicence Climate change nationallicence Daphnia nationallicence Temperature nationallicence Dissolved organic carbon nationallicence Mixing depth nationallicence Fischer Janet Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut Olson Mark Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut Williamson Craig Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut Everhart Jennifer Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut Hogan Paula Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut Mack Jeremy Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut Rose Kevin Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut Saros Jasmine School of Biology and Ecology, University of Maine, 04469, Orono, ME, USA aut Stone Jeffery Climate Change Institute, University of Maine, 04469, Orono, ME, USA aut Vinebrooke Rolf Department of Biological Sciences, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut Hydrobiologia Springer Netherlands 676/1(2011-11-01), 263-277 0018-8158 676:1<263 2011 676 10750 https://doi.org/10.1007/s10750-011-0888-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10750-011-0888-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Fischer Janet Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut NATIONALLICENCE 700 1- Olson Mark Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut NATIONALLICENCE 700 1- Williamson Craig Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Everhart Jennifer Department of Biology, Franklin and Marshall College, 17604-3003, Lancaster, PA, USA aut NATIONALLICENCE 700 1- Hogan Paula Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Mack Jeremy Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Rose Kevin Department of Zoology, Miami University, 212 Pearson Hall, 45056, Oxford, OH, USA aut NATIONALLICENCE 700 1- Saros Jasmine School of Biology and Ecology, University of Maine, 04469, Orono, ME, USA aut NATIONALLICENCE 700 1- Stone Jeffery Climate Change Institute, University of Maine, 04469, Orono, ME, USA aut NATIONALLICENCE 700 1- Vinebrooke Rolf Department of Biological Sciences, University of Alberta, T6G 2E9, Edmonton, AB, Canada aut NATIONALLICENCE 773 0- Hydrobiologia Springer Netherlands 676/1(2011-11-01), 263-277 0018-8158 676:1<263 2011 676 10750 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer