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An individual-based model for analyzing the evolution of traditional foraging strategies /Kanarek, Andrew Robert. January 1900 (has links)
Thesis (M.S.)--Humboldt State University, 2006. / Includes bibliographical references (40-42). Also available via Humboldt Digital Scholar.
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The energetics of migration and reproduction of dusky Canada geese (Branta canadensis occidentalis)Bromley, Robert G. H. 06 June 1984 (has links)
Adult female Dusky Canada Geese were studied on the
Copper River Delta, Alaska and in the Willamette Valley,
Oregon during April through July, 1977 to 1979. Objectives
of the research were to: 1) determine the chronology of use
of protein and energy reserves in relation to four periods
of reproduction defined as the migration, prelaying,
egg laying and incubation periods, and 2) to assess the role
of food in meeting energy requirements during these four
periods. During the study, 162 geese were collected for
composition analysis.
Endogenous lipids were heavily utilized during
migration, egg laying and incubation. Endogenous protein
was important during egg laying and incubation. Food
supplied about half of the energy requirements calculated
for the migration period, all needs during prelaying, over
75% during egg laying and about one third of energy
requirements during incubation. Food was most important for
supplementing high' protein needs of laying geese and both
protein and energy needs of geese during the last third of
the incubation period when endogenous reserves were
depleted.
Although northern nesting geese have been assumed to be
largely independent of food during prelaying through
incubation, it was suggested that food is in fact
proximately important, influencing both clutch size and
patterns of energy use during incubation. Ultimately, the
timing of nesting and clutch size of northern nesting geese
may have evolved in response to the need for an optimal food
supply about two-thirds of the way through incubation. / Graduation date: 1985
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Movements and distribution of Canada geese near Cape Churchill, ManitobaDidiuk, Andrew B. January 1980 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 30-34).
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Recreational substitutability an empirical investigation of goose hunting at the Horicon Marsh /Baumgartner, Robert. January 1978 (has links)
Thesis (M.S.)--Wisconsin. / Includes bibliographical references (leaves 92-95).
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History and ecology of the Canada geese wintering near Rock Prairie, WisconsinCraven, Scott R., January 1976 (has links)
Thesis (M.S.)--University of Wisconsin--Madison. / Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Ecological aspects of Canada geese and other waterfowl in the Mississippi flywayTrost, Robert Edward. January 1984 (has links)
Thesis (Ph. D.)--University of Wisconsin--Madison, 1984. / Typescript. Vita. Description based on print version record. Includes bibliographical references.
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Distribution and migration of Canada geese associated with Horicon Marsh, WisconsinCraven, Scott R. January 1978 (has links)
Thesis--University of Wisconsin--Madison. / Typescript. Vita. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references.
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Factors associated with dusky Canada goose nesting and nest success on artificial nest islands of the western Copper River Delta /Maggiulli, Nicole Marie. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2008. / Printout. Includes bibliographical references (leaves 87-96). Also available on the World Wide Web.
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The timing of nesting in red-breasted geese and their nesting association with birds of preyQuinn, John Leo January 2000 (has links)
No description available.
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Population ecology of the dusky Canada goose (Branata candensis occidentalis Baird)Sheaffer, Susan E. 05 February 1993 (has links)
Adult dusky Canada geese (Branta canadensis
occidentalis Baird) were banded with plastic neck bands and
observed on the winter range during 1985-92. Annual
survival rates of adult geese estimated from observation
data ranged from 76% to 85%. A model of Canada goose
population dynamics was developed to illustrate
relationships between survival rates, harvest regulations,
and recruitment parameters and to predict trends in
population size. Model simulations using recent estimates
of survival and recruitment indicated that without
significant increases in recruitment, survival rates must
remain at or above present levels for the dusky Canada goose
population to maintain itself.
Observations of geese banded with tarsal and neck bands
were used to estimate within-year survival rates and rates
of neck band loss during 1990-92. Average monthly survival
was 97% and was not significantly different among harvest
and nonharvest periods (X��, P = 0.3882). Neck band
retention rates were 100% and 98% the first and second year
after banding, respectively, for male and female geese.
Resighting probabilities for neck and tarsal bands were
significantly lower for female than for male geese (X��,
P < 0.020).
Midwinter population size was estimated using neck band
observations and a capture-resighting model. Dusky Canada
goose population estimates ranged from 12,400 to 19,800
during 1990-92. Population estimates generally agreed with
the U.S. Fish and Wildlife Service midwinter inventory
during this period.
Subflocks of wintering dusky Canada geese were
identified using a clustering algorithm and the number of
weeks neck banded geese were observed in regions of the
winter range. Over 65% of geese in subflocks affiliated
with the northern and southern regions of the winter range
were never observed outside their region of affiliation.
Geese affiliated with the middle regions of the winter range
exhibited greater movement, as most were seen at least once
outside their region of affiliation. Although large groups
could be identified based on regional use patterns,
associations between group members could only be
demonstrated for small groups of [less than or equal to] 10 geese and adult pairs. / Graduation date: 1993
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