Arnott aquatic ecology Lab


My research team uses empirical approaches to understand the factors that regulate the abundance and distribution of organisms across the landscape. Using a combination of experimental studies and the analysis of spatial and temporal data, we investigate how local environmental conditions (biotic and abiotic) and dispersal influence biodiversity. We are also interested in determining what role biodiversity plays in maintaining ecosystem function and how biodiversity and function are influenced by the addition and removal of disturbances.

In our current research program, we are investigating these ecological processes in the context of several environmental stressors impacting lakes on the Canadian Shield: 

1)  factors influencing the recovery of lakes from acidification,

2)  the impact of declining calcium on zooplankton communities,

  1. 3) the effect of the exotic invertebrate predator, Bythotrephes, on aquatic food webs

  2. 4)the influence of climate change on lakes.


Our Research

2018 - James’ paper investigating salinity effects on two zooplankton communities is published in Freshwater Biology.

2018 - Amelia’s NSERC-USRA study investigating how declining Ca in lakes influences Daphnia minnehaha’s anti-predator defence is published in Hydrobiologia.  Congratulations Amelia!

October 2 2017 - Shakira’s paper on-line! Azan and Arnott. The impact of calcium decline on population growth rates of crustacean zooplankton in Canadian Shield Lakes. Limnology and Oceanography.

October 4 2017 - Shelley attended The Great Lakes Chloride Forum in Toronto. Interesting presentations and discussions about road salt and how to minimize impacts on freshwater.

Sept 27 2017 - Brian Kielstra’s paper examining within-lake and catchment characteristics that influence amphipod recovery in Sudbury lakes. This study was part of the TALER project  (Terrestrial Aquatic Linkages for Ecosystem Recovery). On-line first in Ecological Applications.


ASLO meeting in Victoria, 2018

Awesome to meet with former students and colleagues!

Summer field work finished - now for all the sample processing!