Greg A Breed
Publications
Breed, G. A., J. Mills-Flemming, D. P. Costa, P.W. Robinson, I. D. Jonsen. State-space methods for better inference of behavioral dynamics in tracked animals. 2011. Submitted to Ecological Modelling.
Benoıt, H. P., D. P. Swain, W. D. Bowen, G. A. Breed, M. O. Hammill, and V. Harvey. 2011. Can predation by grey seals explain elevated natural mortality in three fish species in the southern Gulf of St. Lawrence? Mar. Eco. Prog. Ser. 442:149-167 [pdf]
Luque, S. P. , S. H. Ferguson and G. A. Breed. 2011. Age- and gender-related differences in
spatial behaviour of ringed seals in Hudson Bay. Submitted to Mar. Eco. Prog. Sers.
Edwards, A. M., M. P. Freeman, G. A. Breed,
and I. D. Jonsen. 2011. Marine predator scaling laws questioned.
Submitted to PloS One.
Harvey, V., M.O. Hammill, D.P. Swain, G. A. Breed,
C. Lydersen and K.M. Kovacs. 2011. Winter foraging by a top predator,
the grey seal, in relation to the distribution of prey. Submitted to
Mar. Eco. Prog. Ser.
Maxwell S. M., J. J. Frank, G. A. Breed,
P.
W.
Robinson,
S.
A. Simmons, D. E. Crocker, J. P. Gallo-
Reynoso, D. P. Costa. Benthic foraging on seamounts by a deep diving
marine mammal. 2011.
Mar. Mamm. Sci., Published Online Sept 29, 2011 [pdf].
Maxwell, S. M., G. A. Breed,
B.
J.
Godley,
R.
J. Parnell, J. Makanga-Bahouna, E. Pemo-Makaya,
S. Ngouessono, B. Nickel, A. Formia, D. P. Costa and M. S. Coyne.
Internesting behavior and
movements of olive ridley sea turtles (Lepidochelys olivacea) in Gabon,
Africa. 2011. Plos One 6(5):e19905 [pdf].
Breed, G. A.,
W.
D.
Bowen,
and
M. L. Leonard. 2011. Development of foraging strategies with
age in
a long-lived marine predator. Mar. Eco. Prog. Ser. 431: 267–279 [pdf].
Block, B., I. Jonsen, S. Jorgensen, A. Winship, S. Shaffer, S. Bograd,
E. Hazen, D. Foley, G. A.
Breed, A.-L.
Harrison, J. Ganong, A. Swithenbank, M. Castleton, H. Dewar, B. Mate,
G. L. Shillinger, K. M. Schaefer,
S. R. Benson, M. J. Weise, R. W. Henry and D. Costa. 2011. Tagging of
Pacific Pelagics: Tracking apex marine predator
movements in a dynamic ocean. Nature: early view [pdf].
Breed, G. A.,
D.
P.
Costa.,
M.
E. Goebel and P. W. Robinson 2011. Electronic tracking
tag
programming is critical to data collection for behavioral time-series
analysis. Ecosphere, 2:art10 [pdf].
Breed, G. A.,
I.
D.
Jonsen,
R.
A. Myers, W. D. Bowen, and M. L. Leonard. 2009.
Sex-specific,
seasonal foraging tactics of adult grey seals (Halichoerus grypus)
revealed by state-space analysis.
Ecology 90:3209-3221 [pdf].
Green, R. E., G. A. Breed,
M.
J.
Dagg,
and
T. S. Bianchi. 2008. Modelling ecosystem responses
to changing nutrients in the Mississippi River Plume. Cont. Shelf Res.
28:1451-1465 [pdf].
Breed, G. A.,
W.
D.
Bowen,
J.
I. McMillan, and M. L. Leonard. 2006. Sexual
segregation of
seasonal foraging habitats in a non-migratory marine mammal. Proc. R.
Soc. B 273:2319-2326 [pdf].
Green, R. E., T. S. Bianchi, M. J. Dagg, N. D. Walker, and G. A. Breed.
2006.
An
organic
carbon
budget
for the Mississippi River turbidity plume and plume
contributions to air-sea CO2 fluxes and
bottom water hypoxia. Estuaries and Coasts. 29:579-597 [pdf].
Dagg, M. J., T. S. Bianchi, G. A. Breed,
W.-J.
Cai.,
S.
Duan,
H. Liu,
B. M. McKee, R. T. Powell, and M. Stewart. 2005. Biogeochemical
characteristics of the lower Mississippi River, USA, during June
2003. Estuaries and Coasts 28:664-674 [pdf].
Breed, G. A.,
G.
A.
Jackson,
and
T. L. Richardson. 2004. Sedimentation, carbon
export, and food
web structure in the Mississippi River plume described by inverse
analysis. Mar. Eco. Prog. Ser.
278:35-51 [pdf].
Dagg, M. J., and G. A. Breed. 2003. Biological effects
of Mississippi River nitrogen on the Northern
Gulf of Mexico: A Review and Synthesis. J. Mar. Sys. 43:133-152 [pdf].
Buck, T. L., G. A. Breed,
S.
C.
Pennings,
M.
E. Chase, M. Zimmer, and T. H. Carefoot. 2003.
Diet choice in an omnivorous salt marsh crab: Different food types,
claw allometry, and habitat
complexity. J. Exp. Mar. Bio. Ecol. 292:103-116 [pdf].
Papers In Progress
Breed,
G. A., E. E. Crone and S. Stitcher. Citizen scientist data suggest widespread climate driven changes in North American butterfly communities. 20XX.
Breed,
G. A., P. M. Severns and E.E. Crone. A theoretical framework for
predicting the expected patchiness of butterfly populations from female
reproductive allocation. 20XX.
Breed,
G. A., W. Don Bowen and M. L. Leonard. Seasonal prey movement
causes intraspecific competition in a top marine predator. 20XX.
Theses
Breed,
G.A. 2002. Carbon flow and ecosystem dynamics in the
Mississippi
River plume described by inverse analysis. M.S. thesis. Texas
A&M University, College Station, TX, USA. [ pdf
]
Breed,
G.A. 2008. State-space analyses indicate experience,
prey
availability, competition, and reproductive status drive foraging
behaviour in a top marine predator. Ph.D. thesis. Dalhousie
University, Halifax, NS, Canada. [ pdf
]
Papers Presented
Breed,
G. A., J. Mills-Flemming, D. P. Costa, and I. D. Jonsen (2011).
State-space estimation of time-varying movement parameters from animal
tracking data. Poster. Biologging 4, Hobart, Tasmania, 14 March 2011.
Breed, G. A.
(2010) Using movement models to understand the life history and
behaviour of marine predators. Special Seminar. Harvard Forest, Harvard
University. 13 October 2010.
Breed, G. A.
(2010) Using movement data to understand the life history of grey seals
and their impact on the Scotian Shelf ecosystem. Departmental Seminar,
Department of Biology, Dalhousie University. 7 October 2010.
Breed, G. A. (2010) Estimating parameters of
animal movement models using SIR particle filter methods. Departmental
Seminar, Department of Mathematics and Statistics, Dalhousie
University. 30 Sept 2010.
Harvey, V., G.
A.
Breed, M. O. Hammill and D. Swain. (2009) Spatial overlap
between grey seals and fish in the Cabot Strait area in winter. Poster
presentation. 18th Biennial conference on the Biology of Marine
Mammals. Quebec, Canada, 14 October 2009.
Breed, G. A.,
W.
D.
Bowen,
M.
L. Leonard, I. D. Jonsen. (2009) Contributed oral
presentation. Evidence for displacement of juveniles by intraspecific
competition in a large population of marine mammals. Ecological Society
of America, Albuquerque, NM, USA, 4 August 2009 & 18th Biennial
conference on the Biology of Marine Mammals. Quebec, Canada, 13 October
2009.
Breed, G. A.,
J.
Mills
Flemming,
M.
Dowd, C. Field, D. P. Costa (2009). Parameter
augmented particle filter/smoother methods for animal tracking data.
Poster. Statistical Society of Canada Conference, 2 June 2009,
Vancouver, BC, Canada.
Breed, G.A.,
I.
D.
Jonsen,
W.D.
Bowen, M.L. Leonard, R. A. Myers (2008) Sex- and
age-specic foraging tactics in grey seals (Halichoerus grypus) revealed by
behaviour discriminating state-space models. 23 September 2008. ICES
2008, Halifax, NS, Canada.
Breed, G.A.,
I.
D.
Jonsen,
W.D.
Bowen, M.L. Leonard, and R. A. Myers (2007)
State-space models as tools to understand movement in marine animals
observed by satellite. 13 August 2007. Special Seminar. Southwest
Fisheries Science Center, La Jolla, CA, USA.
Breed, G.A.,
W.D.
Bowen,
M.L.
Leonard
(2007) Development of movement and foraging
strategies in young of year grey seals elucidated by behaviour
discriminating state-space modeling. 9 August 2007. Ecological Society
of America, San Jose, CA, USA.
Breed, G.A.,
I.D.
Jonsen,
H.K.
Lotze,
and B. Worm (2007) Future of Marine Animal
Populations: Predicting abundance, distribution, and diversity of
marine life in the global ocean. 6 June 2007. Invited Speaker: NOAA
Office of Ocean Exploration, Silver Spring, MD.
Breed, G.A.,
W.D.
Bowen,
M.L.
Leonard,
and R. A. Myers (2007) Getting the most of
animal tracking data: State-space models as tools to understand
behaviour from satellite telemetry data. 14 May 2007. Special Seminar:
Department of Natural Resources, Cornell University.
Breed, G.A.,
I.D.
Jonsen,
W.D.
Bowen,
D. Austin, and R.A. Myers (2005) Using
state-space models to discriminate behavioural state from ARGOS
satellite telemetry data. 16th Biennial conference on the Biology of
Marine Mammals. December 2005, San Diego, USA.
Breed, G.A.,
W.D.
Bowen,
and
J.M.
McMillian (2005) Seasonal segregation of foraging
areas by sex in a size dimorphic marine mammal. Ecological Society of
America, August 2005, Montreal, Canada.
Breed, G.A.,
Dagg,
M.J.,
and
G.A.
Jackson. (2004) Dynamical modeling of
phytoplankton size structure in the Gulf of Alaska: Do copepods relieve
grazing pressure on nano- and picophytoplankton? Poster: American
Geophysical Union winter meeting, Portland, Oregon.
Breed, G.A. (2002)
Inverse
analysis of carbon and nitrogen flow in the Mississippi River
plume ecosystem. Invited speaker. LEAG workshop, 14 November 2002,
Tulane University.
Breed, G.A.,
T.L.
Richardson,
and
G.A.
Jackson (2002) Planktonic food web dynamics
of the Mississippi River plume inferred by inverse analysis. Oral
presentation. ASLO 2002, Victoria, Canada.
Maxwell S. M., J. J. Frank, G. A. Breed, P. W. Robinson, S. A. Simmons, D. E. Crocker, J. P. Gallo- Reynoso, D. P. Costa. Benthic foraging on seamounts by a deep diving marine mammal. 2011. Mar. Mamm. Sci., Published Online Sept 29, 2011 [pdf].
Breed, G. A., W. D. Bowen, and M. L. Leonard. 2011. Development of foraging strategies with age in a long-lived marine predator. Mar. Eco. Prog. Ser. 431: 267–279 [pdf].
Block, B., I. Jonsen, S. Jorgensen, A. Winship, S. Shaffer, S. Bograd, E. Hazen, D. Foley, G. A. Breed, A.-L. Harrison, J. Ganong, A. Swithenbank, M. Castleton, H. Dewar, B. Mate, G. L. Shillinger, K. M. Schaefer, S. R. Benson, M. J. Weise, R. W. Henry and D. Costa. 2011. Tagging of Pacific Pelagics: Tracking apex marine predator movements in a dynamic ocean. Nature: early view [pdf].
Breed, G. A., D. P. Costa., M. E. Goebel and P. W. Robinson 2011. Electronic tracking tag programming is critical to data collection for behavioral time-series analysis. Ecosphere, 2:art10 [pdf].
Breed, G. A., I. D. Jonsen, R. A. Myers, W. D. Bowen, and M. L. Leonard. 2009. Sex-specific, seasonal foraging tactics of adult grey seals (Halichoerus grypus) revealed by state-space analysis. Ecology 90:3209-3221 [pdf].
Green, R. E., G. A. Breed, M. J. Dagg, and T. S. Bianchi. 2008. Modelling ecosystem responses to changing nutrients in the Mississippi River Plume. Cont. Shelf Res. 28:1451-1465 [pdf].
Breed, G. A., W. D. Bowen, J. I. McMillan, and M. L. Leonard. 2006. Sexual segregation of seasonal foraging habitats in a non-migratory marine mammal. Proc. R. Soc. B 273:2319-2326 [pdf].
Green, R. E., T. S. Bianchi, M. J. Dagg, N. D. Walker, and G. A. Breed. 2006. An organic carbon budget for the Mississippi River turbidity plume and plume contributions to air-sea CO2 fluxes and bottom water hypoxia. Estuaries and Coasts. 29:579-597 [pdf].
Dagg, M. J., T. S. Bianchi, G. A. Breed, W.-J. Cai., S. Duan, H. Liu, B. M. McKee, R. T. Powell, and M. Stewart. 2005. Biogeochemical characteristics of the lower Mississippi River, USA, during June 2003. Estuaries and Coasts 28:664-674 [pdf].
Breed, G. A., G. A. Jackson, and T. L. Richardson. 2004. Sedimentation, carbon export, and food web structure in the Mississippi River plume described by inverse analysis. Mar. Eco. Prog. Ser. 278:35-51 [pdf].
Dagg, M. J., and G. A. Breed. 2003. Biological effects of Mississippi River nitrogen on the Northern Gulf of Mexico: A Review and Synthesis. J. Mar. Sys. 43:133-152 [pdf].
Buck, T. L., G. A. Breed, S. C. Pennings, M. E. Chase, M. Zimmer, and T. H. Carefoot. 2003. Diet choice in an omnivorous salt marsh crab: Different food types, claw allometry, and habitat complexity. J. Exp. Mar. Bio. Ecol. 292:103-116 [pdf].
Breed, G.A. 2008. State-space analyses indicate experience, prey availability, competition, and reproductive status drive foraging behaviour in a top marine predator. Ph.D. thesis. Dalhousie University, Halifax, NS, Canada. [ pdf ]
Breed, G. A. (2010) Using movement models to understand the life history and behaviour of marine predators. Special Seminar. Harvard Forest, Harvard University. 13 October 2010.
Breed, G. A. (2010) Using movement data to understand the life history of grey seals and their impact on the Scotian Shelf ecosystem. Departmental Seminar, Department of Biology, Dalhousie University. 7 October 2010.
Breed, G. A. (2010) Estimating parameters of animal movement models using SIR particle filter methods. Departmental Seminar, Department of Mathematics and Statistics, Dalhousie University. 30 Sept 2010.
Harvey, V., G. A. Breed, M. O. Hammill and D. Swain. (2009) Spatial overlap between grey seals and fish in the Cabot Strait area in winter. Poster presentation. 18th Biennial conference on the Biology of Marine Mammals. Quebec, Canada, 14 October 2009.
Breed, G. A., W. D. Bowen, M. L. Leonard, I. D. Jonsen. (2009) Contributed oral presentation. Evidence for displacement of juveniles by intraspecific competition in a large population of marine mammals. Ecological Society of America, Albuquerque, NM, USA, 4 August 2009 & 18th Biennial conference on the Biology of Marine Mammals. Quebec, Canada, 13 October 2009.
Breed, G. A., J. Mills Flemming, M. Dowd, C. Field, D. P. Costa (2009). Parameter augmented particle filter/smoother methods for animal tracking data. Poster. Statistical Society of Canada Conference, 2 June 2009, Vancouver, BC, Canada.
Breed, G.A., I. D. Jonsen, W.D. Bowen, M.L. Leonard, R. A. Myers (2008) Sex- and age-specic foraging tactics in grey seals (Halichoerus grypus) revealed by behaviour discriminating state-space models. 23 September 2008. ICES 2008, Halifax, NS, Canada.
Breed, G.A., I. D. Jonsen, W.D. Bowen, M.L. Leonard, and R. A. Myers (2007) State-space models as tools to understand movement in marine animals observed by satellite. 13 August 2007. Special Seminar. Southwest Fisheries Science Center, La Jolla, CA, USA.
Breed, G.A., W.D. Bowen, M.L. Leonard (2007) Development of movement and foraging strategies in young of year grey seals elucidated by behaviour discriminating state-space modeling. 9 August 2007. Ecological Society of America, San Jose, CA, USA.
Breed, G.A., I.D. Jonsen, H.K. Lotze, and B. Worm (2007) Future of Marine Animal Populations: Predicting abundance, distribution, and diversity of marine life in the global ocean. 6 June 2007. Invited Speaker: NOAA Office of Ocean Exploration, Silver Spring, MD.
Breed, G.A., W.D. Bowen, M.L. Leonard, and R. A. Myers (2007) Getting the most of animal tracking data: State-space models as tools to understand behaviour from satellite telemetry data. 14 May 2007. Special Seminar: Department of Natural Resources, Cornell University.
Breed, G.A., I.D. Jonsen, W.D. Bowen, D. Austin, and R.A. Myers (2005) Using state-space models to discriminate behavioural state from ARGOS satellite telemetry data. 16th Biennial conference on the Biology of Marine Mammals. December 2005, San Diego, USA.
Breed, G.A., W.D. Bowen, and J.M. McMillian (2005) Seasonal segregation of foraging areas by sex in a size dimorphic marine mammal. Ecological Society of America, August 2005, Montreal, Canada.
Breed, G.A., Dagg, M.J., and G.A. Jackson. (2004) Dynamical modeling of phytoplankton size structure in the Gulf of Alaska: Do copepods relieve grazing pressure on nano- and picophytoplankton? Poster: American Geophysical Union winter meeting, Portland, Oregon.
Breed, G.A. (2002) Inverse analysis of carbon and nitrogen flow in the Mississippi River plume ecosystem. Invited speaker. LEAG workshop, 14 November 2002, Tulane University.
Breed, G.A., T.L. Richardson, and G.A. Jackson (2002) Planktonic food web dynamics of the Mississippi River plume inferred by inverse analysis. Oral presentation. ASLO 2002, Victoria, Canada.