NCEAS Project 11061

Ecological variability of lakes in time: Integrated insights from paleolimnology and long-term ecological research

  • Peter R. Leavitt

ActivityDatesFurther Information
Sabbatical Fellow1st February—31st December 2007Participant List  

Abstract
The intrinsic temporal variability of an ecological system is often assumed to be constant during the period of study, yet increasingly long-term ecological research (LTER) and paleoecological analyses reveal that this variability is itself variable (e.g, paradox of enrichment). While in principle the sources, transmission and consequences of temporal variability can be quantified using fossil, LTER or simulation approaches, to date few studies have explicitly integrated insights from these complementary strategies. Consequently, this project seeks funding to address three goals: a) calibrate high-resolution paleoecological records with monitoring time series to quantify the degree to which fossil records accurately record observed ecological variability; b) test the hypothesis that the disturbance of ecosystems by increasing mass or energy transfer causes increased temporal variability of lake ecosystems, and; c) develop a novel model that links modern ecological processes in lakes with the formation of sedimentary records. Taken together, these three projects are intended to facilitate the formal integration of paleoecology and long-term ecological research.

TypeProducts of NCEAS Research
Journal Article Droscher, Iris; Finlay, Kerri; Patione, A; Leavitt, Peter R. 2008. Daphina control of the spring clear water phase in six polymictic lakes of varying productivity size. Edited by Jones, J. Red; Faaborg, Janice 30th Congress of the International Association of Theoretical and Applied Limnology. Vol: 30(2). Pages 186.
Journal Article Finlay, Kerri; Wissel, B.; Leavitt, Peter R. In Press. Spatial and temporal synchrony of pCO2 in six hardwater lakes of central Canada. Verhandlungen des Internationalen Verein Limnologie (Verh. Internat. Verin. Limnol.). Vol: 30.
Book Chapter McGowan, Suzanne; Leavitt, Peter R. 2008. The role of paleoecology in whole-ecosystem science. Edited by Miao, ShiLi; Carstenn, Susan; Nungesser, Martha Real World Ecology: Large-scale and Long-term Case Studies and Methods. Springer. New York.
Journal Article Patione, A; Leavitt, Peter R. 2008. Landscape analysis of the role of N2 fixation in satisfying algal demand for nitrogen in eutrophic lakes. Edited by Jones, J. Red; Faaborg, Janice 30th Congress of the International Association of Theoretical and Applied Limnology. Vol: 30. Montreal, Canada. Pages 366.
Journal Article Pham, Samantha V.; Leavitt, Peter R.; McGowan, Suzanne; Peres-Neto, Pedro. 2008. Spatial variability of climate and land-use effects on lakes of the northern great plains. Limnology and Oceanography. Vol: 53(2). Pages 728-742.
Journal Article Pham, Samantha V.; Leavitt, Peter R.; McGowan, Suzanne; Wissel, B.; Wassenaar, Leonard I. 2009. Spatial and temporal variability of prairie lake hydrology as revealed using stable isotopes of hydrogen and oxygen. Limnology and Oceanography. Vol: 54(1). Pages 101-118.
Journal Article Xenoloulos, Marguerite A.; Leavitt, Peter R.; Schindler, David W. 2009. Ecosystem-level regulation of boreal lake phytoplankton by ultraviolet radiation. Canadian Journal of Fisheries and Aquatic Sciences. Vol: 66. Pages 2002-2010.