Jim Gessaman
By the time I began planning for college there was no
question about what academic area I would focus on. I looked for college or University that had a
good museum in which I could work. In my
search for a college, I visited
In my junior year in college I took
a cell physiology course that pricked a strong interest in learning about the
physiological functions of birds, not just their natural history. This course was a turning point. I was intrigued by the effect of weather on
bird physiology and behavior. By my
senior year I specifically looked for graduate program that would provide the
training and research opportunity to study the effect of weather on birds or
other animals. I chose the
Jim and Ann
Gessaman moved to
In 2002, Jim was president of the Board of Trustees of the
Cache Valley Unitarian Universalists (CVUU) church, which holds Sunday Services
at the Logan Senior Citizen's Center but has its ministerial office at the
Faith and
Jim
Gessaman, an ornithologist, ecologist, and physiologist at Utah State
University (USU) from 1968-2003, was the major advisor for 20 students earning
a MS degree and 11 earning a PhD. He
authored more than 50 publications on bird migration; energetics of flight;
physiological adaptations of mammals and birds (with emphasis on hawks, eagles,
and owls) to inclement environments; and validations of new methodologies for
studying animal energetics and metabolism. During four sabbaticals, he carried
out research as a visiting scientist at the Rowlett Research Lab (
In addition
to being the Semester at Sea (SAS) biologist in Fall ’86, I have since had
extensive experience lecturing on cruise ships where I have given four to five
biology lectures per cruise: five 2-week cruises (’91,’92,’94,’97,’99) on the
Inside Passage to Alaska (World Explorer Cruises: SS Universe and SS Universe
Explorer); a one-week cruise around Hawaii’s main islands (American:Hawaiian
Cruise Line); a 16-day cruise through the Panama Canal from San Diego, CA to
Tampa, FL; and a 17-day cruise to the Falkland Islands and the Antarctic
Peninsula.
In addition to guiding field trips
and lecturing on cruise ships, I have studied the flora and fauna at many other
international locations as a researcher and as a tourist. Since Fall Semester
1986, I have spent six months on sabbatical in
Major Activities in Each of the
First Four Years after Retirement
First Year (July 1, 2003-June 30, 2004): Traveled out of
Second Year: Traveled out of
Third Year: Lived in
Fourth Year: Moved permanently from
Scholarly
(Refereed) Journals
GESSAMAN, J.A. 1972. Bioenergetics of the Snowy Owl. Arctic and Alpine Res. 4:223.
GESSAMAN, J.A. 1972. Design of a wind tunnel metabolism chamber
for small animals. J. Applied Physiol.
33:225.
Sawby, S.W. and J.A. GESSAMAN.
1974. Telemetry of
electrocardiograms from free‑living birds: A method of electrode
placement. Condor 76:479.
GESSAMAN, J.A. 1975. Book review of "Avian Energetics". Science 185:1009.
Brockway, J.M. and J.A. GESSAMAN.
1977. The energy cost of
locomotion on the level and on gradients for the
GESSAMAN, J.A. 1978. Body temperature and heart rate of the snowy
Owl (Nyctea scandiaca). Condor 80:243‑245.
GESSAMAN, J.A. and P.R. Findell.
1979. Energy cost of incubation
in the American kestrel. Comp. Biochem.
Physiol. 63A:57‑62.
GESSAMAN, J.A. 1979. Body water of the American kestrel. Raptor Research 13:91‑96.
GESSAMAN, J.A. 1979. Premigratory fat in the American
kestrel.
Flynn, R.K. and J.A. GESSAMAN.
1979. An evaluation of heart rate
as a measure of daily metabolism in pigeons (Columba livia). Comp. Biochem. Physiol. 63A:511‑514.
GESSAMAN, J. A. 1980. An evaluation of heart rate as an indirect
measure of daily energy metabolism of the American kestrel. Comp. Biochem. Physiol. 65A:273‑289.
GESSAMAN, J. A. 1980. Heart rate and body temperature of the Uinta
ground squirrel in the field. Comp.
Biochem. Physiol. 66A:707‑710.
Hayes, S. R. and J. A. GESSAMAN.
1980. The combined effects of air
temperature, wind and radiation on the resting metabolism of avian
raptors. J. Thermal Biology 5:119‑125.
GESSAMAN, J. A. 1982. A survey of raptors in northern
Hayes, S. R. and J. A. GESSAMAN.
1982. Prediction of raptor
resting metabolism: comparison of measured values with tatistical and
biophysical estimates. J. Thermal
Biology 4:45‑50.
Stalmaster, M. V. and J. A. GESSAMAN.
1982. Food consumption and energy
requirements of captive bald eagles. J.
Wild. Manage. 46:646‑654.
GESSAMAN, J. A. and J. A. MacMahon.
1984. Mammals in ecosystems: their effects on the composition and
production of vegetation. Acta Zool.
Fenn. 172:11‑18.
GESSAMAN, J. A. 1984. Body Fat, Body Water, and Total Caloric Value
of Uinta Ground Squirrels.
GESSAMAN, J. A. 1984. Book review of "Behavioral energetics:
the cost of survival in vertebrates".
Auk 101:421-422.
Stalmaster, M.V. and J.A. GESSAMAN.
1984. Ecological energetics and
foraging behavior of overwintering Bald Eagles.
Ecol. Mono. 543:407‑428.
Harris, G.D., H.D. Huppi and J.A. GESSAMAN. 1985.
The thermal conductance of winter and summer pelage of Lepus
californicus. J. Therm. Biol. 10:79‑81.
GESSAMAN, J.A., J.A. Johnson and S.W. Hoffman. 1986.
Hematocrits and erythrocyte numbers for Cooper's and sharp‑shinned
hawks. Condor 88:95‑ 96.
Custer, T.W., R.G. Osborn, F.A. Pitelka and J.A. GESSAMAN. 1986.
Energy budget and prey requirements of breeding Lapland Longspurs near
GESSAMAN, J.A. and K.A. Nagy.
1988. Transmitter loads affect
the slight speed and metabolism of homing pigeons. Condor 90:662‑668.
GESSAMAN, J. A. and K. A. Nagy.
1988. Energy metabolism: errors
in gas exchange conversion factors.
Physiological Zoology 61:507‑513.
GESSAMAN, J.A. and A.G. Goliszek.
1989. Marmot scats supplement hay
pile vegetation as food energy for pikas.
Rogowitz, G.L. and J.A. GESSAMAN.
1990. Influence of air
temperature, wind and irradiance on metabolism of white-tailed jackrabbits. J. Therm. Biol. 15:125-131.
GESSAMAN, J.A. and S.W. Hoffman.
1990. Body temperatures of
migrant accipiter hawks just after flight.
Wilson Bulletin 102:133-137.
Kirkley, J.S. and J.A. GESSAMAN.
1990. Ontogeny of
thermoregulation in Red-tailed Hawks and Swainson's Hawks.
Kirkley, J.S. and J.A. GESSAMAN.
1990. Water economy of nestling
Swainson's Hawks. Condor 92:29-44.
Hoffman, S.W., J.P. Smith and J.A. GESSAMAN. 1990.
Size of fall-migrant accipiters from the
Smith, J.P., S.W. Hoffman and J.A. GESSAMAN. 1990.
Regional size differences among fall-migrant accipiters in
Kennedy, P.L., and J.A. GESSAMAN.
1991. Diurnal resting metabolic
rates of accipiters. Wilson Bulletin
103:101-105.
GESSAMAN, J.A., M.R. Fuller, P.J. Pekins, and G.E. Duke. 1991. Resting metabolic rate of Golden Eagles, Bald
Eagles, and Barred Owls with a tracking transmitter or an equivalent load.
Wilson Bulletin 103:261-265.
GESSAMAN, J.A., G.W. Workman, M.R. Fuller. 1991.
Flight performance, energetics and water turnover of tippler pigeons with a harness and dorsal load.
Condor 93:546-554.
Pekins, P.J., F.G. Lindzey, and
J.A. GESSAMAN. 1991. Physical characteristics of Blue Grouse
winter use trees and roost sites.
Pekins, P.J., J.A. GESSAMAN and F.G. Lindzey. 1992. Winter energy requirements of Blue
Grouse. Canadian J. Zoology 70:22-24.
Pekins, P.J., J.A. GESSAMAN and F.G. Lindzey. 1994.
Field metabolic rate of blue grouse during winter.
Kennedy, P.L., J.M. Ward, G.A. Rinker and J.A. GESSAMAN. 1994. Post-fledging areas in northern goshawk
home ranges. Studies in Avian Biology 16:75-82.
Pekins, P. J., J. A. GESSAMAN, and F. G. Lindzey 1997. Microclimatic characteristics of blue
grouse Dendragapus obscurus roost-sites: influence on
energy expenditure. Wildlife biology 3: 243-250.
GESSAMAN, J. A., R. D. Nagle, and J.
D. Congdon. 1998. Evaluation of the cyclopropane absorption method of measuring
avian body fat. Auk 115: 175-187.
Hinton, T.G.,
GESSAMAN, J.A., Nagle, R.D. & Congdon, J.D.
1998. An evaluation of whole
body potassium-40 content for estimating
lean and fat mass in pigeons. Condor
100: 579-582.
GESSAMAN, J.A. 1999. Evaluation of
some nonlethal methods of estimating avian body fat and lean mass. In:
Delong, J.P. & GESSAMAN, J.A. 2001. A comparison
of noninvasive techniques for estimating total body fat in Sharp-shinned and
Cooper's Hawks. J. Filed Ornithol. 72:349-364.
Wilson, R. and GESSAMAN,
J.A. 2003. Two large bald eagle communal winter roosts in
GESSAMAN, J.A., Newgrain,
K., and Green, B. 2004. Validation of the doubly-labeled water (DLW) method for
estimating CO2 production and water flux in growing poultry
chicks. Journal of Avian Biology
35:71-96.
Piersma, T, GESSAMAN, J.A.,
Dekinga, A., and Visser, G.H. 2004. Gizzard and other lean mass components
increase, yet Basal metabolic Rates decrease, when red knots Calidris canutus
are shifted from soft to hard-shelled food.
Journal of Avian Biology 35:99-104.
Cooper, S.J. and GESSAMAN,
J.A. 2004. Thermoregulation and habitat preference in mountain chickadees and
juniper titmice. Condor 106:852-861.
Cooper, S.J. and GESSAMAN,
J.A. 2005. Nocturnal hypothermia in seasonally acclimatized mountain chickadees
and juniper titmice. Condor 107: 151-155.
Scholarly (Unrefereed) Journals
GESSAMAN, J.A. 1973. Methods of estimating the energy cost of free
existence. In: J.A. GESSAMAN (ed),
Ecological Energetics of Homeotherms.
Ecological Energetics of Homeotherms, USU Press pp. 94‑96.
GESSAMAN, J.A. 1973. The effect of solar radiation and wind on
energy metabolism. In: J.A. GESSAMAN
(ed.), Ecological Energetics of Homeotherms.
Ecological Energetics of Homeotherms, USU Press.
Hargrove, J.L. and J.A. GESSAMAN.
1973. An evaluation of
respiratory rate as an indirect monitor of free‑living energy
metabolism. In: J.A. GESSAMAN
(ed.). Ecological Energetics of
Homeotherms, USU Press pp. 77‑85.
Johnson, S.F. and J.A. GESSAMAN.
1973. An evaluation of heart rate
as an indirect monitor of free‑living energy metabolism. In: J.A. GESSAMAN (ed). Ecological Energetics
of Homeotherms. Ecological Energetics
Homeotherms, USU Press pp. 43‑54.
Books or Chapters in Books
GESSAMAN, J.A. 1984. Physiological adaptations in arctic birds, in:
G.E. Folk, Jr. and M.A. Folk (eds.), Vilhajalmur Stefansson and the Development
of Arctic Terrestrial Science.
GESSAMAN, J.A. and L. Haggas.
1987. Energetics of the American
kestrel in northern
GESSAMAN, J.A. and G.L. Worthen.
1982. The Effect of Weather on
Avian Mortality.
Invited Reviews
GESSAMAN, J.A. 1987. Energetics.
pp. 289‑320 In: B.A. Giron Pendleton, B.A. Millsap, K.W. Cline and
D.M. Bird (eds.) Raptor Management Techniques Manual. National Wildlife Federation,
gessaman@biology.usu.edu