Frederic Guichard

Associate Professor,
McGill University

Department of Biology
1205 Avenue Docteur Penfield
Montréal Québec H3A 1B1
Tel: (514) 398-6464
Fax: (514) 398-5069
E-mail: frederic.guichard@mcgill.ca
Institution page
Personal page



Education
Postdoctoral fellow. Princeton University (NJ, USA). 2000-2002
Ph.D. Biology. Université Laval (Québec, Canada). 1993-2000.
B.Sc. Biology. Université de Montréal (Montréal, Canada). 09/1990 - 05/1993


Research
I am interested in the study ecosystems as complex systems and in problems of scale in ecology. Among these problems I am interested in understanding (1) how large scale patterns of biological diversity develop and are maintained from local interactions among individuals, (2) how biological diversity is influenced by global changes, (3) the role of biological diversity for community structure and dynamics, and (4) how environmental complexity interact with biotic processes to maintain variability and diversity in communities. I address these questions by combining empirical (experiments, remote sensing) and theoretical (spatially-explicit modeling) approaches in order to link patterns and processes across scales. More precisely, much of my research is focused on understanding how diversity and other properties of marine communities emerge from local interactions among individuals.

One of the main goal of my research is to understand how the aggregation of species and space into functional groups or ``community elements'' can provide nontrivial information about community dynamics. I develop spatially-explicit models and simulations implementing local processes tested in the field. One of the questions underlying this work is to determine conditions maintaining communities in a critical state where scale invariance (i.e. power law relationships) are observed, and to understand the role of functional diversity in that process. I also use models to explore the role of metacommunity dynamics (large scale interactions among communities through larval dispersal) along biogeographic physical gradients for the maintenance of local and regional diversity. The development of metacommunity models is of great interest in coastal habitats in order to understand the influence of global changes on biological diversity. Another advantage of large-scale models is their use as a tool for the design of marine reserves. Linking patterns and processes responsible for creating a

QCBS students
Ridouan Bani, Ph.D.
(Start: 2014, End: 2017)
Thesis title: Spatio-temporal connectivity: Implications for metapopulation, metacommunity and marine protected areas.
Personal page
Nicole Knight, Ph.D.
(Start: 2015)

Other (co-)supervisor: Andrew Altieri, STRI
Tianna Peller, Ph.D.
(Start: 2016)

Julien Massé Jodoin, M.Sc.
(Start: 2014)

Thesis title: Assessing the impact of local biotic-abiotic interactions on the stability of a simple coastal ecosystem
Flor Santiago, M.Sc.
(Start: 2015)
Other (co-)supervisor: Harilaos Lessios, Smithsonian Tropical Research Institute
Thesis title: Patterns of aggregation of sea cucumbers and their relation to the broacast component Allee effect
Previous students (since 2009)
Geoffrey Cook, Postdoctoral fellow
(Start: 2011, End: 2012)
Thesis title: Metapopulation persistence under climate change
Philippe Girard, Postdoctoral fellow
(Start: 2011, End: 2013)
Other QCBS (co-)supervisor: Denis Réale
Thesis title: Individual-based modelling of stream salamanders in the context of climate change (Covey Hill, Quebec)
Dominique Gravel, Postdoctoral fellow
(Start: 2007, End: 2009)
Thesis title: trophic and spatial aspects of coexistence in metacommunities
Tri Nguyen Quang, Postdoctoral fellow
(Start: 2007, End: 2012)
Thesis title: the ecological control of spatial instabilities in metacommunities
Philippe Doucet-Beaupré, Ph.D.
(Start: 2010, End: 2012)
Aline Fouard, Ph.D.
(Start: 2010, End: 2012)
Thesis title: Meta-ecosystem dynamics in marine coastal habitats
Tarik Gouhier, Ph.D.
(Start: 2006, End: 2010)
Thesis title: Marine metacommunity dynamics and reserve design theories
Kecia Kerr, Ph.D.
(Start: 2006, End: 2012)
Thesis title: Dispersal limitation and large-scale persistence of tropical invertebrates
Anais Lacoursière-Roussel, Ph.D.
(Start: 2007, End: 2012)

Other (co-)supervisor: Chris W. McKindsey, Fisheries and Oceans Canada
Thesis title: Effects of propagule pressure from maritime transport on the invasion process
Personal page
Nicolas Le Corre, Ph.D.
(Start: 2007, End: 2013)

Other (co-)supervisor: Ladd E. Johnson, Université Laval
Thesis title: Variability of recruitment and connectivity within a marine metapopulation
Justin Marleau, Ph.D.
(Start: 2009, End: 2014)
Thesis title: Ecological Stoichiometry in Metaecosystems
Personal page
Eric Pedersen, Ph.D.
(Start: 2009, End: 2015)

Thesis title: metapopuation persistence under fluctuating connectivity
Personal page
Oscar Puebla, Ph.D.
(Start: 2003, End: 2009)
Thesis title: Molecular and community ecology of hamlet fish in the Caribbean.
Charlotte Roby, Ph.D.
(Start: 2007, End: 2009)
Thesis title: Génétique de population de la moule bleue dans l'estuaire du Saint-Laurent
Christian Brazeau, M.Sc.
(Start: 2005, End: 2009)
Thesis title: community and ecosystem dynamics of enbobenthic communities in mussel beds
César Largaespada, M.Sc.
(Start: 2007, End: 2011)
Thesis title: Metaecosystem dynamics in mussel bed habitats
Laurence Paquette, M.Sc.
(Start: 2012, End: 2015)

Other (co-)supervisor: Philippe Archambault
Thesis title: Effect of perimeter and area of mussel beds on the structure of their associated community and the ecosystem fluxes
Courses
BIOL 434 - Theoretical Ecology (Winter / Hiver)
BIOL 495 - Quantitative Biology Seminar 2 (Fall / Automne)

Publications
68- Reciprocal feedbacks between spatial subsidies and reserve networks in coral reef meta-ecosystems
Spiecker, B., Gouhier, T.C., Guichard, F.
2016 Ecological Applications (Date Added: 2016-11-25)

67- A Trait-based framework for mutation bias as a driver of long-term evolutionary trends
Xue, J.Z., Costopoulos, A., Guichard, F.
2016 Complexity (Date Added: 2016-11-25)

66- At what scales does aggregated dispersal lead to coexistence?
Pedersen, E.J., Guichard, F.
2016 Oikos (Date Added: 2016-11-18)

65- Effect of shipping traffic on biofouling invasion success at population and community levels
Lacoursière-Roussel, A., Bock, D.G., Cristescu, M.E., Guichard, F., McKindsey, C.W.
2016 Biological Invasions (Date Added: 2016-08-29)

64- Nonhierarchical Dispersal Promotes Stability and Resilience in a Tritrophic Metacommunity
Pedersen, E.J., Marleau, J.N., Granados, M., Moeller, H.V., Guichard, F.
2016 The American Naturalist (Date Added: 2016-05-05)

63- Importance of Rhodococcus strains in a bacterial consortium degrading a mixture of hydrocarbons, gasoline, and diesel oil additives revealed by metatranscriptomic analysis
Auffret, M.D., Yergeau, E., Labbé, D., Fayolle-Guichard, F., Greer, C.W.
2015 Applied Microbiology and Biotechnology (Date Added: 2016-01-21)

62- How robust is dispersal-induced spatial synchrony?
Zhang, Y., Lutscher, F., Guichard, F.
2015 Chaos (Woodbury, N.Y.) (Date Added: 2016-01-11)

61- Emergence of nutrient co-limitation through movement in stoichiometric meta-ecosystems
Marleau, J.N., Guichard, F., Loreau, M.
2015 Ecology Letters (Date Added: 2015-10-19)

60- The effect of predator avoidance and travel time delay on the stability of predator-prey metacommunities
Zhang, Y., Lutscher, F., Guichard, F.
2015 Theoretical Ecology (Date Added: 2015-09-30)

59- Planktonic predation risk: effects of diel state, season and prey life history stage
Kerr, K. A., Cornejo, A., Guichard, F., Crespi Abril, A. C., Collin, R.
2015 Journal of Plankton Research (Date Added: 2015-05-04)

58- Fidelity drive: A mechanism for chaperone proteins to maintain stable mutation rates in prokaryotes over evolutionary time
Xue, Julian Z., Kaznatcheev, Artem, Costopoulos, Andre, Guichard, Frederic
2015 Journal of Theoretical Biology (Date Added: 2014-10-27)

57- Synchrony: quantifying variability in space and time
Gouhier, T.C and Guichard, F.
2014 Methods in Ecology and Evolution (Date Added: 2016-06-22)

56- Planktonic predation risk varies with prey life history stage and diurnal phase
Kerr K.A., Cornejo A., Guichard F., Collin R.
2014 Marine Ecology Progress Series (Date Added: 2016-06-22)

55- Meta-ecosystem dynamics and functioning on finite spatial networks
Marleau JN, Guichard F, Loreau M.
2014 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2016-06-22)

54- Timing reproduction when temperature varies: behavioral mechanisms in fiddler crabs
Kerr., K. Collin, R. Christy, J. and Guichard, F.
2014 PLoS One (Date Added: 2016-06-22)

53- The Paradox of Enrichment in Metaecosystems
Gounand, Isabelle, Mouquet, Nicolas, Canard, Elsa, Guichard, Frédéric, Hauzy, Céline, Gravel, Dominique
2014 The American Naturalist (Date Added: 2014-12-15)

52- Non-equilibrium spatial dynamics of ecosystems
Guichard, Frederic, Gouhier, Tarik C.
2014 Mathematical Biosciences (Date Added: 2014-09-12)

51- Reproducing on Time When Temperature Varies: Shifts in the Timing of Courtship by Fiddler Crabs
Kerr, Kecia A., Christy, John H., Joly-Lopez, Zoé, Luque, Javier, Collin, Rachel, Guichard, Frédéric
2014 PLoS ONE (Date Added: 2014-06-17)

50- Designing effective marine reserve networks for non-equilibrium metacommunities
Gouhier, T.C., Guichard, F., Menge, B.A.
2013 Ecological Applications (Date Added: 2016-06-22)

49- Synchronization in ecological systems by weak dispersal coupling with time delay
Wall, Emily, Guichard, Frederic, Humphries, Antony R.
2013 Theoretical Ecology (Date Added: 2013-11-14)

48- Variation in recruitment: Differentiating the roles of primary and secondary settlement of blue mussels Mytilus spp.
Le Corre, N., Martel, A.L., Guichard, F., Johnson, L.E.
2013 Marine Ecology Progress Series (Date Added: 2013-05-22)

47- Unifying sources and sinks in ecology and Earth sciences
Loreau, Michel, Daufresne, Tanguy, Gonzalez, Andrew, Gravel, Dominique, Guichard, Frédéric, Leroux, Shawn J., Loeuille, Nicolas, Massol, François, Mouquet, Nicolas
2013 Biological Reviews (Date Added: 2013-04-15)

46- Reducing error in reproductive timing caused by temperature variation: Interspecific differences in behavioural adjustment by fiddler crabs
Kerr, K.A., J.H. Christy, R. Collin and F. Guichard
2012 Marine Ecology Progress Series (Date Added: 2016-06-23)

45- Competition-Colonization Trade-offs, competitive Uncertainty, and the Evolutionary Assembly of Species
Pillai, P. and Guichard, F.
2012 PLoS One (Date Added: 2016-06-22)

44- Pairing dynamics and the origin of species
Puebla, O., Bermingham, E. and Guichard, F.
2012 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2016-06-22)

43- Meta-ecosystem engineering: Nutrient fluxes reveal intra-specific and inter-specific feedbacks in fragmented mussel beds
Largaespada, C., Guichard, F., and Archambault
2012 Ecology (Date Added: 2016-06-22)

42-Connectivity as a tool to manage coastal 
ecosystems in changing oceans
Le Corre, N., Johnson, L.E. and Guichard, F.
2012 Oceanography ( Date Added: 2016-06-22)

41- Modeling biofouling from boat and source characteristics: a comparative study between Canada and New Zealand
Lacoursière-Roussel, Anaïs, Forrest, Barrie M., Guichard, Frédéric, Piola, Richard F., McKindsey, Christopher W.
2012 Biological Invasions (Date Added: 2012-10-23)

40- Disentangling invasion processes in a dynamic shipping-boating network
Lacoursière-Roussel, AnaïS, Bock, Dan G., Cristescu, Melania E., Guichard, FréDéRic, Girard, Philippe, Legendre, Pierre, McKindsey, Christopher W.
2012 Molecular Ecology (Date Added: 2012-09-14)

39- Persistence Increases with Diversity and Connectance in Trophic Metacommunities
Gravel, Dominique, Canard, Elsa, Guichard, Frédéric, Mouquet, Nicolas
2011 PLoS ONE (Date Added: 2012-09-17)

38- Choosing Fitness-Enhancing Innovations Can Be Detrimental under Fluctuating Environments
Xue, Julian Z., Costopoulos, Andre, Guichard, Frederic
2011 PLoS ONE (Date Added: 2011-12-05)

37- Perspective: Matching, Mate Choice, and Speciation
Puebla, O., Bermingham, E., Guichard, F.
2011 Integrative and Comparative Biology (Date Added: 2011-09-26)

36- Species coexistence in a variable world
Gravel, Dominique, Guichard, Frédéric, Hochberg, Michael E.
2011 Ecology Letters (Date Added: 2011-07-08)

35-Spatial Pattern Formation of Motile 
Microorganisms:from Gravitactic Bioconvection to Protozoan Culture Dynamics
Nguyen-Quang, T., Nguyen, T.H. et Guichard, F.
2010 Porous 
Media: Applications in Biological Systems and Biotechnology ( Date Added: 2016-06-22)

34-The influence of temperature on courtship timing and incubation period in fiddler crabs (Uca)
Kerr, K., Christy, J. et Guichard, F.
2010 Integrative and Comparative Biology ( Date Added: 2016-06-22)

33- Source and sink dynamics in meta-ecosystems
Gravel, D., Guichard, F., Loreau, M., Mouquet, N.
2010 Ecology (Date Added: 2012-03-07)

32- Patch dynamics, persistence, and species coexistence in metaecosystems
Gravel, D., Mouquet, N., Loreau, M., Guichard, F.
2010 American Naturalist (Date Added: 2012-03-07)

31- Ecological Systems as Complex Systems: Challenges for an Emerging Science
Anand, Madhur, Gonzalez, Andrew, Guichard, Frédéric, Kolasa, Jurek, Parrott, Lael
2010 Diversity (Date Added: 2011-08-08)

30- Synchrony and stability of food webs in metacommunities
Gouhier, T.C., Guichard, F., Gonzalez, A.
2010 American Naturalist (Date Added: 2011-04-08)

29- The role of bioconvection in plankton population with thermal stratification
Nguyen-Quang, T., Guichard, F.
2010 International Journal of Bifurcation and Chaos (Date Added: 2011-04-08)

28- Nutrient flows between ecosystems can destabilize simple food chains
Marleau, J.N., Guichard, F., Mallard, F., Loreau, M.
2010 Journal of Theoretical Biology (Date Added: 2011-04-08)

27- Ecological processes can synchronize marine population dynamics over continental scales
Gouhier, T.C., Guichard, F., Menge, B.A.
2010 Proceedings of the National Academy of Sciences (Date Added: 2011-04-08)

26- Comparative analysis of marine ecosystems: Workshop on predator-prey interactions
Bailey, K.M., Ciannelli, L., Hunsicker, M., Rindorf, A., Neuenfeldt, S., Möllmann, C., Guichard, F., Huse, G.
2010 Biology Letters (Date Added: 2011-04-08)

25-Estimating dispersal from genetic isolation 
by distance in a coral reef fish (Hypoplectrus puella)
Puebla, O., Bermingham, E. et Guichard, F.
2009 Ecology ( Date Added: 2016-06-22)

24-The importance of cross-scale interactions in coupled social-ecological systems
Guichard, F. et Peterson G.
2009 Managing for resilience: New 
directions for marine ecosystem-based management ( Date Added: 2016-06-22)

23- Using spatial statistics to infer scales of demographic connectivity between populations of the blue mussel, Mytilus spp.
Smith, G.K., Guichard, F., Petrovi?, F., McKindsey, C.W.
2009 Limnology and Oceanography (Date Added: 2011-04-08)

22- Two-dimensional gravitactic bioconvection in a protozoan (Tetrahymena pyriformis) culture
Nguyen-Quang, T., Nguyen, T.H., Guichard, F., Nicolau, A., Szatmari, G., LePalec, G., Dusser, M., Lafossee, J., Bonnet, J.L., Bohatier, J.
2009 Zoological Science (Date Added: 2011-04-08)

21-Two dimensional gravitactic bioconvection 
of Tetrahymena pyriformis protozoan culture
Nguyen Quang, T., Nguyen, T.H., Guichard, F., Nicolau, A., Szatmari, G., LePalec, G., Dusser, 
M., Lafossee, J., Bonnet, J.-L., Bohatier, J.
2008 Zoological Science ( Date Added: 2016-06-22)

20- Intrinsic and extrinsic causes of spatial variability across scales in a metacommunity
Guichard, F., Steenweg, R.
2008 Journal of Theoretical Biology (Date Added: 2011-04-08)

19- Scales of Mytilus spp. population dynamics: Importance of adult displacement and aggregation
Petrovi?, F., Guichard, F.
2008 Marine Ecology Progress Series (Date Added: 2011-04-08)

17- Influence of acute and chronic disturbance on macrophyte landscape zonation
Tewfik, A., Guichard, F., McCann, K.S.
2007 Marine Ecology Progress Series (Date Added: 2011-04-08)

16- Colour pattern as a single trait driving speciation in Hypoplectrus coral reef fishes?
Puebla, O., Bermingham, E., Guichard, F., Whiteman, E.
2007 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2011-04-08)

15- Weak trophic interactions and the balance of enriched metacommunities
Maser, G.L., Guichard, F., McCann, K.S.
2007 Journal of Theoretical Biology (Date Added: 2011-04-08)

14- Local disturbance cycles and the maintenance of heterogeneity across scales in marine metapopulations
Gouhier, T.C., Guichard, F.
2007 Ecology (Date Added: 2011-04-08)

13- Criticality and disturbance in spatial ecological systems
Pascual, M., Guichard, F.
2005 Trends in Ecology and Evolution (Date Added: 2011-04-08)

12- Interaction strength and extinction risk in a metacommunity
Guichard, F.
2005 Proceedings of the Royal Society B: Biological Sciences (Date Added: 2011-04-08)

11- Time-scale change detection applied to real-time abnormal stationarity monitoring
Aubert, D., Guichard, F., Bouchafa, S.
2004 Real-Time Imaging (Date Added: 2011-04-08)

10- Competition landscapes: Scaling up local biotic and abiotic processes in heterogeneous environments
Guichard, F.
2004 Theoretical Population Biology (Date Added: 2011-04-08)

9- Toward a dynamic metacommunity approach to marine reserve theory
Guichard, F., Levin, S.A., Hastings, A., Siegel, D.
2004 BioScience (Date Added: 2011-04-08)

8- A note on two classical enhancement filters and their associated PDE's
Guichard, F., Morel, J.-M.
2003 International Journal of Computer Vision (Date Added: 2011-04-08)

7- Mussel disturbance dynamics: Signatures of oceanographic forcing from local interactions
Guichard, F., Halpin, P.M., Allison, G.W., Lubchenco, J., Menge, B.A.
2003 American Naturalist (Date Added: 2011-04-08)

6- Cluster size distributions: Signatures of self-organization in spatial ecologies
Pascual, M., Roy, M., Guichard, F., Flierl, G.
2002 Philosophical transactions of the Royal Society of London. Series B, Biological sciences (Date Added: 2011-04-08)

5- Scaling the influence of topographic heterogeneity on intertidal benthic communities: Alternate trajectories mediated by hydrodynamics and shading
Guichard, F., Bourget, E., Robert, J.-L.
2001 Marine Ecology Progress Series (Date Added: 2011-04-08)

4- Scale-space from a level lines tree
Monasse, P., Guichard, F.
2000 Journal of Visual Communication and Image Representation (Date Added: 2011-04-08)

3- High-resolution remote sensing of intertidal ecosystems: A low-cost technique to link scale-dependent patterns and processes
Guichard, F., Bourget, E., Agnard, J.-P.
2000 Limnology and Oceanography (Date Added: 2011-04-08)

2- Fast computation of a contrast-invariant image representation
Monasse, P., Guichard, F.
2000 IEEE Transactions on Image Processing (Date Added: 2011-04-08)

1- Topographic heterogeneity, hydrodynamics, and benthic community structure: A scale-dependent cascade
Guichard, F., Bourget, E.
1998 Marine Ecology Progress Series (Date Added: 2011-04-08)

In the media
Des bélugas toujours en détresse
Canoë Infos (Desjardins, Josiane) 2011-08-06

Journée Mondiale des Océans: Des bélugas toujours en détresse
24h Montréal (Desjardins, Josianne) 2011-06-13

I Heard the Mussels Call My Name
Maritime Noon (MacLeod, Norma Lee) 2010-05-07

Ecologie marine: l’effet bivalve
Techno-Science (Michel) 2010-05-06

The bivalve effect
Science Centric 2010-05-04

The Bivalve Effect : New Understanding of Marine Ecology Will Enable Better Management of Resources
NewsWise 2010-05-03

The bivalve effect
EurekAlert (Raillant-Clark, William) 2010-05-03