Ackerman Lab
Ackerman Lab
Niagara Falls

People

Contents

Dr. Josef Daniel Ackerman (PI)


My interest in the physical ecology was influenced by my undergraduate program at the University of Toronto and by the Marine Ecology Course at the MBL (Woods Hole).  I undertook my Master’s research under the late Akira Okubo at SUNY Stony Brook, where I examined the flow around eelgrass (Zostera marina) plants and flowers, before moving to Cornell University where I studied the biomechanics of submarine pollination in eelgrass for my dissertation under Karl Niklas.

I spent five years in Mechanical Engineering at the University of Toronto, as a postdoctoral scientist and research associate, where I set up a lab to examine the biomechanics of recruitment and adhesive. Later while also affiliated with the Royal Ontario Museum, I examined suspension feeding and benthic-pelagic coupling in zebra mussels (Dreissena polymorpha and D. bugensis).

During my nine years as a founding faculty and Canada Research Chair in Physical Ecology and Aquatic Science at UNBC, I was involved in the studies related to suspension feeding and growth of blue mussels (Mytilus trossulus and M. californianus), the hydraulic habitats of stream periphyton and riparian management, abiotic pollination, pheromone dispersion, kelp holdfast mechanics, and particle capture in aquatic and wetland plants.

My primary interests at the University of Guelph are in the physical ecology of:

  1. trophic interactions including photosynthesis and suspension feeding,
  2. reproduction including abiotic pollination and broadcast spawning, and
  3. aquatic sciences including sediment/substrate-water interactions.

Google Scholar Research Gate

My lab is actively involved in species and ecosystem recovery in southwestern Ontario involving endangered unionid mussels, and hypoxia issues in the Great Lakes and their watersheds.  I have three beautiful kids at home that keep me very busy in the middle of the night especially on weekends…

Dr. Christopher Farrow (Postdoctoral Scientist)

I completed his BSc in Marine and Freshwater Biology, MSc (phytoplankton community structure), and PhD (Passive dispersal in Rivers) at the University of Guelph. He is now examining the relationship between algal cell shape and biomass using statistical methodologies related to Imaging Flow Cytometry.

Sydney Todd (MSc student)

I completed my Honours Bachelors of Science degree in Marine and Freshwater Biology at the University of Guelph.   I am interested in how human activity have impacted the natural environment, with a particular interest in how freshwater organisms react to anthropogenic nutrient loading. My thesis is directed toward the examination of the effects of nitrogen loading on the clearance rates of freshwater unionid mussels. I enjoy a number of activities including those with our family pets and intramural sports.

Sean Neave (MSc Student)

I completed my Honours Bachelor of Science in Honours degree in Biology, with a concentration in ecology, evolution, and behaviour. I am now working toward my MSc in Integrative Biology at the University of Guelph. I am investigating how water column turbulence affects the fertilization success and early development of dreissenid mussels (Dreissena bugensis and D. polymorpha) and walleye (Sander vitreus), which are important predators and a major fishery in Lake Erie. I have enjoyed my move to Guelph..

Maggie Gordon  (MSc Student)

I completed my Honours Bachelors of Science degree in Marine and Freshwater Biology at the University of Guelph. My interest lies within ecological interactions, trophic dynamics, and primary production within aquatic systems. I am especially interested in how human have affected physical processes in freshwater ecosystems and how organisms and ecosystems respond to these changes.  My thesis is directed towards understanding how hydrodynamics affects the fundamental process of zooplankton grazing of algae by Daphnia magna. I enjoy a number of activities including pets, sports and intramurals.

 Josh Berry (MSc Student)

I completed my Honours Bachelor of Science in Biological Science at the University of Guelph with a Minor in Ecology and a Certificate of Environmental Conservation. I am interested in the ecological pitfalls of hypoxia and hypoxia in the Great Lakes, how it may effect the ecophysiology of predatory fish and climate change. In my free time, I enjoy playing sports, reading, and the outdoors.

Emily Schram (MSc student)

I completed my Honours Bachelors of Science degree in Marine and Freshwater Biology at the University of Guelph. My interest lies in understanding trophic relationships in lake ecosystems. My thesis is focused on the relationship among phytoplankton, zooplankton and ichthyoplankton in the western basin of Lake and how this may affect the recruitment of ecologically important predatory fish like walleye (Sander vitreus). I enjoy intramural sports and the outdoors.

Current Undergraduate Students

  • Vacant

Alumni Of the lab

  1. ALUMNI: POSTDOCTORAL SCIENTISTS
    • Dr. Aidin Jabbari (2017-2019) Postdoctoral Scientist — Physical Ecology of Hypoxia in Lake Erie.
      • Currently: Lake Ecological Modeler, National Institute of Water and Atmospheric Research (NIWA) New Zealnad
    • Dr. Mike Nishizaki (2013 – 2015) Postdoctoral Scientist —  Physical Ecology of Mussels and Lakes.
      • Currently: Assistant Professor, Carelton College.
    • Dr. Collette Mesher (2012 – 2014) Postdoctoral Scientist —  Recovery of unionid mussels.
      • Currently: Owner/Operator, Rebel Honey, Guelph.
    • Dr. Damien Bouffard (2011 – 2012) Postdoctoral Scientist — Dynamics of hypoxia in Lake Erie.
      • Currently:  Group Leader, Surface Waters Research & Management, Eawag, Switzerland
    • Dr. Kazutaka Yanase (2008 – 2009) Postdoctoral Fellow — Unsteady Boundary Layers and Fish Locomotion.
      • Currently: Postdoctoral Fellow, Tampere University of Technology
    • Dr. Robert Schindler (2007 – 2009)  Postdoctoral Scientist — Scalar Dispersion in Aquatic Systems.
      • Currently: Research Fellow,Coastal, Ocean And Sediment Transport (COAST) laboratory, Plymouth University, UK
    • Dr. Patricia Gillis (2006 – 2008) Postdoctoral Scientist — Environmental Contaminants of Freshwater Mussels.
      • Currently: Research Scientist, Environment Canada (NWRI)
    • Dr. Gregory Nishihara (2004 – 2007) Postdoctoral Scientist — Physical Ecology of Aquatic Plants.
      • Currently: Associate Professor, Nagaski University
  2. ALUMNI: GRADUATE STUDENTS
    • Keoni Chong –Navigating turbulence: the effects of eddy size on the swimming performance of walleye (Sander vitreus) larvae.
      • Currently: technician, Ontario Ministry of Natural Resources
    • Jake Carman – Relative size matters: Identifying how the sizing and spacing of spawning substrate roughness affects walleye (Sander vitreus) egg displacement.  
      • Currently: Biologist, LGL Ltd.
    • Al Lu – Effect of riparian vegetation buffers on unionid mussel habitats.
      • Currently: Assistant, Toronto Regional Conservation Authority.
    • Luc Goulet (MSc 2022)– The effects of hydrodynamics on the feeding of a freshwater grazer (Daphnia magna): The influence of particle size and shape.
      • Currently: Biologist, Dillon Consulting
    • Stephanie Smodis (MSc 2022) – Temporal dynamics of freshwater mussel larvae.    
      • Currently: Research Assistant, Fisheries and Oceans Canada
    • Emile Sabeti-Mehr (MSc 2022) – One shell to rule them all? Evaluating hydrodynamic trade-offs due to positioning in freshwater mussels.
      • Currently: Quality Assurance, Laurentis Energy Partners
    • Kirsten Luck (MSc 2020) –The effects of multiple stressors on the ecophysiology of Lampsilis siliquoidea: Effects and interactions among water temperature, velocity and suspended solid concentration.
      • Currently: Biologist, Fisheries and Oceans Canada
    • Julian Lum (MSc 2020) –Bed shear stress as a predictor of juvenile unionid habitat
      • Currently: Systems Analyst, Mackenzie Health
    • Victor Fung (MSc 2019) — Effects of porewater flow on interstitial algal composition and juvenile unionid mussel feeding
      • Currently: Fisheries Biologist, Fleming College.
    • Shaylah Tuttle-Raycraft (PhD 2018) — The effect of suspended sediment on the suspension feeding and distribution of freshwater mussels (Bivalvia: Unionidae)
      • Currently: Lab Coordinator and Course Instructor, Department of Integrative Biology, University of Guelph
    • Kyle Sewak (MSc 2017) — The effects of collector elasticity on particle capture efficiency.
      • Currently: PhD Candidate, University of Guelph
    • Katherine Tran (MSc 2017) —Selective Feeding of Freshwater Mussels: Implications for Resource Partitioning.
      • Currently: Research Assistant, Fisheries and Oceans Canada
    • Lisa Harris (MSc 2016) — The effect of water velocity on carbon isotope fractionation of aquatic macrophytes.
    • Dori McCombe (nee Gao) (MSc 2015) — The effects of collector motion on particle capture: Lab studies and wind pollination in the field.
      • Currently: Laboratory Instructor/Coordinator, Department of Integrative Biology, University of Guelph.
    • Rakesh Mistry (MSc 2015) — Suspension Feeding of Juvenile and Adult Freshwater Mussels (Bivalvia: Unionidae) Under Flowing Conditions.
      • Currently: Pharmaceutical/Medical Management
    • Julian Krick (MS(Eng)- 2013 TU Berlin) — Particle capture on a 2D cylinder subject to flow-induced oscillation in a cross flow: Biological implications.
      • Currently: Researcher, Researcher and Lab Manager, University of Waterloo
    • Sarah French (nee Glover) (MSc 2013) The role of shear stress in the hydraulic habitats of juvenile unionid mussels.
      • Currently: Postdoctoral Fellow, University of Waterloo
    • David Timerman (MSc 2013 Corcordia University) Mechanisms of pollen release in anemophilous plants.
      • Currently: PhD Student, University of Toronto
    • Maude Tremblay MSc (2012; co-supervisor, Todd Morris, DFO). An effect of the invasive round goby (Neogobius melanostomus) on the recruitment of unionid mussel species at risk (Bivalvia: Unionidae).
      • Currently: Fisheries Protection Biologist, Fisheries and Oceans Canada
    • Julie vanden Byllaardt MSc (2011) The Role of Hydrodynamic Habitat in the Feeding Ecology of Freshwater Mussels (Bivalvia: Unionida).
      • Currently: Researcher, Hamilton Harbour Remedial Action Plan – ‎Conservation Halton
    • Noel Quinn PhD (2009) — External Fertilization and Dispersal of Dreissenid Mussels.
      • Currently: Professor, Sheridan Institute of Technology
    • Astrid Schwalb PhD (2009) — Dispersal of Unionid Mussels.
      • Currently: Assistant Professor, Texas State University San Marcos
    • Bjarni Kristjansson PhD (2008) — Fine scale morphological diversity of fishes in relation to ecological characters.
      • Currently: Professor, Holar University, Iceland
    • Chad Riopel MSc (2008) — Evolutionary Ecology of Anti-Predator Defences in Sea Cucumbers.
    • Kelly McNicols MSc (2007) – Host Fish Identification of Endangered Freshwater Mussels.
      • Currently: Biologist, Fisheries and Oceans Canada
    • Julianne Trelenberg, MSc (2004 – UNBC) — Macrophyte-Flow Interactions in Aquatic Plants.
      • Currently: Environmental Educator, Scout Island Nature Centre
    • Michael Nishizaki, MSc (2002 – UNBC) — Adult Sheltering in Sea Urchins. (NSERC PGS winner):
      • Currently: Assistant Professor, Carelton College.
    • Trent Hoover, MSc (2001 – UNBC) — Fluid Dynamic and Mayflies (Epeorus) in Torrential Streams. (Nominated for the Best TA):
      • Currently: Faculty, University of Lethbridge
    • Jacquie Lee, MSc (2000 – UNBC) — Freshwater molluscs of Northern British Columbia (Best Student Paper: World Malacological Congress 1998)
  3. ALUMNI: UNDERGRADUATES
    • Emily Schram (2023-2024) – Research Assistant
    • Rebecca Glaser (2023) – Research Assistant and Project student
    • Natalie Perrin (2020 – 2021) – Research Assistant – Physical ecology
    • Keoni Chung (2017 – 2019) — Research Assistant — Zebra mussel spawning
    • Luc Goulet (2017 – 2019) — Research Assistant — Recovery of Freshwater Mussels
    • Adam deLeeuw (2017-2018) — Research Assistant — Recovery of Freshwater Mussels
    • Joseph Nowlan (2016-2017) — Research Assistant — Recovery of Freshwater Mussels
    • Jodi Ball (2014-2016) — Research Assistant —  Recovery of Freshwater Mussels
    • James Akselsen (2015 – 2016) — Research Assistant —  Zooplankton Feeding
    • Arieanna Balbar  (2015) — Research Assistant —  Recovery of Freshwater Mussels
    • Raytha  De Assis Murillo  (2015) — Intern —  Recovery of Freshwater Mussels
    • Sisi Gao (2015) — Intern —  Recovery of Freshwater Mussels
    • Evelyn MacRobert — BSc Thesis student —  Zooplankton Swimming
    • Sarah Dobney (2013 – 2014)– Research Assistant —  Recovery of Freshwater Mussels
    • Victoria Smurthwaite (2014-2015)  — Research Assistant —  Recovery of Freshwater Mussels
    • Jacqueline May (2011 – 2013) — Research Assistant —  Recovery of Freshwater Mussels
    • Marcine Severn (2010 – 2012) — Research Assistant — Wind Pollination
    • Anthony Merante (2009-2011) — Research Assistant — Recovery of Freshwater Mussels
    • Amanda Conway (2009-2011) — Research Assistant — Recovery of Freshwater Mussels
    • Katherine Wright (2009-2011) — Research Assistant — Recovery of Freshwater Mussels
    • Marena Brinkhurst (2009-2010) — Research Assistant — Campus Sustainability
    • Peter Blouw (2008-2009) — Research Assistant — Physical Ecology
    • Patrick Ragaz (2004 – 2008) — BSc Research Assistant — Macrophyte-flow interactions.
    • Eileen Hoftzer (2004 – 2007) BSc Research Assistant — Various Projects.
    • Jen McConnachie MSc (1999 – 2000 – UNBC) — Research Technician (NSERC PSG winner)
    • Shelley Hoover – Rosenthal, BSc (1999 – UNBC) — Research Assistant (NSERC PGS winner)
    • Simon Goring (2003 – 2004 – UNBC) — Research Assistant
    • Honey Giroday (2001- 2002 – UNBC) — Research Assistant
    • Brieanna Allen (2002 – UNBC) — Research Assistant
    • Julia Bolton (2000 – 2002 – UNBC) — Research Assistant and MSc Student
    • Leanne Wilson, BSc (1997-1999 – UNBC) — Research Technician, Smithers, BC.
    • Mike Nishizaki BSc (1995-1998 – UNBC) — Research Assistant