PEARL  Paleoecological Environmental Assessment and Research Laboratory

                                             Department of Biology, Queen's University, Kingston ON, Canada, K7L 3N6

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PhD Students

Julie Andrews- Tracking the long-term development of shallow oligotrophic lakes using algal assemblages within the context of multiple environmental stressors. Donya Danesh- Analysis of pollen and charcoal from lake sediments in Northwestern Ontario to track the long-term Holocene climate. Andrew Labaj- Bosmina size structure related to opposing predation regimes.
Jianbao Liu- Assessing the influences of climatic change on ecological changes in North China lakes during the last two millennia using sedimentary diatom assemblages.

Emily Stewart- Assessing the relative influences of climate, nutrients, and oxygen on chironomid assemblages using paleolimnological techniques.

Jamie Summers- Using diatoms to understand environmental dynamics in freshwater systems near oil sands operations in northern Alberta, Canada



MSc Students

Cecilia Barouillet- Paleolimnological assessment of the Bridge River Diversion and climate change on sockeye salmon food web in Seton Lake (British Columbia, Canada).

 Brett Elmslie- Investigation of the impact of warmer climatic conditions on aquatic life in a small kettle lakes from northern Ontario.

Liz Favot- Using sedimentary diatom assemblages to better understand the recent occurrence of blue-green algal blooms in low nutrient lakes in the Algoma region of northern Ontario.

Anya Kochel- A paleolimnological investigation of food-web and carrying capacity changes in Okanagan Sockeye Salmon nursery lakes.  

Rachael Melnik-Proud- Diatoms as indicators of environmental and climatic change in High Arctic ponds. Specifically in the Cape Herschel area.



Katherine Moir- Assessing the influence of species richness on algal productivity in a southeastern Ontario wetland.


Graham Mushet- Investigation on the importance of enhanced atmospheric nitrogen deposition and climate warming on primary production of scaled chrysophytes in northern Saskatchewan.  


Clare Nelligan- Using cladocera assemblages to assess environmental change in the Northern Ring of Fire, Ontario.


Janae Rampone- Assessing changes since Pre-industrial times in cottaged lakes in Algonquin Park.

Branaavan Sivarajah- Examining the effects of multiple environmental stressors in lakes and bays near and within Georgian Bay using diatom and chironomid assemblages.

Guy-Thierry Tenkouano- Arsenic Geochemistry in a Historically Contaminated Lake: Paleolimnological Examination of Moira Lake, Ontario,Canada.

Robin Valleau-



BSc (Honours) Students

Jessica Almeida- Investigating the application of chironomids as an indicator of past oxygen levels.

Dara Corrigan- Assessing past deep water oxygen availability of Peninsula Lake (ON) using chironomid assemblages.

Paul Kraly- Timing of the shift from unicellular Mallomonas taxa to colonial Synura sphagnicola chrysophytes in a minimally-disturbed lake; Adirondack Lake. Sari Ohsada-


Donna Paznar- Holocene perspective of changes in cladocera from Wolf Lake in the Adirondacks.Donna P

 Olivia Pink- Using chironomid assemblages to assess the past deep water oxygen concentrations of Tadenac Lake, ON, to determine if changes over time have impacted the Lake Trout population.

 Hannah Rundle-Investigating the timing and potential drivers of the shift from unicellular to colonial scaled chrysophytes (specifically Synura petersenii) in sediment cores from minimally disturbed lakes in the Adirondacks. Mina Vu- Analyzing the environmental impact of Double-crested cormorants and Ring-billed gulls on Lake Ontario bird ponds using paleolimnological techniques. 
Andrea Zemanek- Using chironomids to track deepwater oxygen changes in Osoyoos Lake, B.C. Andrea



Liang Zhu- Using paleolimnological indicators to track the effect of highway construction on sub-arctic lakes.

Mark Giles- Looking for effects of climate change on high-altitude Andean ponds in Ecuador using diatoms as a paleolimnological indicator.

Charlotte Heller- Using diatom assemblages to examine the hurricane history of Grape Tree Pond, a coastal lagoon in Jamaica.


Lab Volunteers,Undergraduate Assistants and Summer Work Students PEARL has volunteer opportunities supporting many lines of research. To find out more contact Chris Grooms.

Joseph Vaitekunas Chelsea Cheng


Leticia Rizzetto  

Nell Libera

Currie Cathcart

Louisa Kennett

Brigitte Simmatis