Dissertations / Theses: 'Geese'

1

Warren, Stephanie M. "Individual performance in the Canada goose Branta canadiensis." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386272.

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2

Choudhury, Sharmila. "Mate choice in Barnacle geese." Thesis, University of Oxford, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.306596.

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3

Madakan, S. P. "Diet choice in pre-migratory pink-footed geese (Anser brachyrhynchus) and greylag geese (Anser anser)." Thesis, University of Aberdeen, 1990. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU027914.

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Pre-migratory Icelandic pink-footed and greylag geese staging in Aberdeenshire, Scotland, feed on winter barley (Hordeum vulgare), winter wheat (Triticum spp) and sown pastures of Italian ryegrass (Lolium multiflorum). Previous studies, elsewhere, have reported that arctic-nesting geese need to build their reserves of energy and nutrients at their staging site since birds feeding during the breeding period are more vulnerable to nest predation and since, in some instances, there is virtually no food in the breeding area. Hence, geese are expected, when feeding at their spring staging sites, to select their food plants in such a way as to maximise their intake of both energy and nutrients. This thesis investigated the diet choice of pre-migratory Icelandic pink-footed and greylag geese. The chemical composition of the food plants eaten by geese and the digestibility to geese of these food plants as well as the intake of food by geese, were measured. Food intake on the fields of the various food plants was also related to the energy expenditure on such fields by measuring the intake of organic matter, energy and protein per peck and per pace on each field. Furthermore, diet choice of captive geese was also measured with the aim of investigating what cues geese use to select their food plants as well as investigating the role of field-related factors in the choice of diet by geese. Neither the chemical composition nor the digetibility to geese of the food plants were significantly different between barley, wheat and ryegrass. Similarly, food intake was not significantly different between geese feeding on the different food plants. When food intake was related to the indices of energy expenditure (pacing and pecking), however, ryegrass was the most profitable food plant with barley being more profitable than wheat in this respect. Nonetheless, barley was the least preferred food plant by both wild geese and captive geese suggesting that its relative rejection in the wild is not entirely due to field-related factors. Moreover, unlike wild geese, captive geese did not show a preference for ryegrass over wheat suggesting that the relative rejection of wheat in the wild may be a consequence of possible vartiations in field-related factors such as disturbance and the great cost of walking on wheat in relation to ryegrass. In conclusion, geese would maximise their net rate of energy gain by feeding exclusively on ryegrass (since they needed to walk less on ryegrass fields for the same amount of energy intake on cereal fields). Nevertheless, although geese spent more time feeding on ryegrass fields, they sometimes fed on cereal fields. This may be an attempt to diversify their diet in order to ensure the intake of all their required nutrients.

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4

Lakevold, Dale. "Wild geese, stage adaptation and notes." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ53170.pdf.

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5

Woog, Friederike. "Ecology and behavior of reintroduced Hawaiian geese." [S.l. : s.n.], 1999. http://deposit.ddb.de/cgi-bin/dokserv?idn=959320423.

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6

Chinruksa, Chuta. "ODA in Flying Geese Pattern : Thailand's Experience." Kyoto University, 2003. http://hdl.handle.net/2433/148516.

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7

Urquhart, Christine D. "Modelling the feeding distribution of wintering pink-footed geese (Anser brachyrhynchus) and Greylag geese (Anser anser) in central Scotland." Thesis, University of Stirling, 2002. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391461.

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8

Black, J. M. "The pair-bond, agonistic behaviour and parent-offspring relationships in barnacle geese." Thesis, Cardiff University, 1987. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.378102.

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9

Badzinski, Shannon Scott. "Comparative growth and development of Canada geese, Branta canadensis interior, and lesser snow geese, Chen caerulescens caerulescens, of Akimiski Island, Northwest Territories." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp01/MQ32465.pdf.

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10

Percival, Stephen Mark. "Grazing ecology of barnacle geese (Branta leucopsis) on Islay." Thesis, University of Glasgow, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.338180.

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11

West, Phillip D. "Use of Ponds and Lakes by Resident Canada Geese." W&M ScholarWorks, 2003. https://scholarworks.wm.edu/etd/1539626404.

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12

Rowcliffe, J. Marcus. "The population ecology of brent geese and their food plants." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.365866.

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13

Prater, A. J. "Avian grazers and their impact on reedswamps in the Thurne Broads, Norfolk." Thesis, University of East Anglia, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.317972.

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14

Graaf, Alexandra Johanna van der. "Geese on a green wave: flexible migrants in a changing world." [S.l. : [Groningen : s.n.] ; University Library Groningen] [Host], 2006. http://irs.ub.rug.nl/ppn/291343473.

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15

Gill, Jennifer A. "Habitat choice and distribution of wintering pink-footed geese, Anser brachyrhynchus." Thesis, University of East Anglia, 1994. https://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.308250.

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16

Fowler, Ada Christine. "Population genetic structure and breeding philopatric behavior of Cackling Canada Geese /." For electronic version search Digital dissertations database. Restricted to UC campuses. Access is free to UC campus dissertations, 2003. http://uclibs.org/PID/11984.

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17

Gladbach, Anja. "Individual fitness correlates in consecutive years of pair bond in Upland Geese." Diss., lmu, 2011. http://nbn-resolving.de/urn:nbn:de:bvb:19-134889.

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18

Laguë, Sabine Lina. "Cardiorespiratory responses to hypoxia in high- and low-altitude geese and ducks." Thesis, University of British Columbia, 2016. http://hdl.handle.net/2429/58484.

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High-altitude (HA) life is challenging due to the reduced partial pressure of oxygen (hypoxia). Hence, HA vertebrates have evolved increased capacities in their oxygen transport cascade enhancing oxygen transfer. The extent of interspecies variation in these responses within waterfowl, a taxon prolific at HA, remains largely unknown. This thesis investigated 17 waterfowl groups at different altitudes to address the overarching hypotheses that waterfowl use multiple cardiorespiratory strategies to maintain oxygen supply during hypoxia, and that HA exposure alters the waterfowl hypoxic ventilatory and cardiovascular responses. A comprehensive analysis of metabolic, cardiovascular, and ventilatory responses to progressive decreases in equivalent fractional composition of inspired oxygen was made on resting low-altitude (LA) barnacle geese, LA bar-headed geese, HA bar-headed geese, Andean geese, and crested ducks. Andean geese and crested ducks, lifelong HA residents, exhibited fundamentally different mechanisms for maintaining oxygen supply during hypoxia than bar-headed geese, transient HA migrators. Bar-headed geese robustly increased ventilation and heart rate, whereas Andean species increased lung oxygen extraction and stroke volume. Also, HA-reared bar-headed geese exhibited reduced oxygen consumption during hypoxia compared to LA-reared bar-headed geese. Similar cardiovascular studies were performed on five HA duck species (yellow-billed pintail, cinnamon teal, ruddy duck, speckled teal, and Puna teal) in Peru and six related LA duck species (northern pintail, cinnamon teal, ruddy duck, green-winged teal, gadwall, and mallard duck) in the USA. Heart rate and oxygen pulse remained generally unchanged. Instead, most HA ducks exhibited higher blood-oxygen carrying capacity and lower heart rate variability than LA ducks. While heart rate, stroke volume, oxygen pulse, and blood-oxygen carrying capacity contributed to all 17 groups’ hypoxic cardiovascular responses, the predominant responses were increased stroke volume and, in HA taxa, blood-oxygen carrying capacity. Only bar-headed geese increased heart rate appreciably. This thesis identifies multiple cardiovascular and respiratory strategies by which waterfowl maintain oxygen supply during hypoxia, and provides insight into how HA rearing impacts these responses. This thesis also suggests that short-term HA performance utilizes primarily functional enhancements (e.g. rapid heart rate and ventilation increases), whereas lifelong HA residency is supported predominantly by structural changes (e.g. lung and cardiac morphology enhancements).
Science, Faculty of
Zoology, Department of
Graduate

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19

Bradbeer, David Ross. "Lesser Snow Geese and agricultural habitat use on the Fraser River delta." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31864.

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Lesser Snow Geese winter on the Fraser River delta of south-western British Columbia and feed on upland agricultural crops. With the recent loss of foreshore marsh habitat adjacent to the Vancouver International Airport, agricultural habitats have become more important. The loss of foreshore habitat, combined with a growing Snow Goose population, will increase the grazing pressure the birds exert on farm fields in West Delta. Because Snow Geese can overgraze perennial forage grasses, conflicts with farmers will likely escalate. Providing foraging opportunities for Snow Geese while minimizing the conflict between the geese and Delta farmers should be the goal of management efforts. To accomplish these goals, the Alaksen National Wildlife Area (ANWA) and Greenfields cover crop program must be managed in a way that attracts Snow Geese to these areas. From 1995 to 2000 Snow Geese used the Alaksen National Wildlife Area during both the fall and late winter hunting seasons. Fewer geese fed outside the Alaksen National Wildlife Area during open hunting seasons compared to when the seasons were closed. Snow Geese used perennial forage, cover crops, potato, and grain between 1995 and 2000. Between October 2005 and April 2006,1 documented patterns of agricultural field use on Westham Island and Brunswick Point and assessed how crop type, hunting, and field size influenced those patterns. I used foraging theory as a framework to assess how temporal changes in the quality and quantity of food influenced crop use. The main determinant of field use was crop type. Nutrient content appeared to be important to the order of crop use. Snow Geese used the crops that contained the highest concentrations of crude protein (cover crops) and simple carbohydrates (potatoes and barley grain) first in the fall and early winter. Perennial forage crops contained the highest concentration of indigestible crude fibre and were not used until the higher quality crops were depleted. Absolute crop biomass did not seem to influence crop use patterns because Snow Geese initially ignored perennial forage fields that contained more biomass than cover crop and potato fields. In March and April Snow Geese continued to use perennial forage fields, but also grain stubble and cover crop fields. Use of these fields may have been related to the presence of newly sprouting forbs and grasses. Snow Geese moved outside of the Alaksen National Wildlife Area despite an open hunting season in November 2005. Food depletion within the Alaksen National Wildlife Area may force Snow Geese to tolerate hunting pressure and was likely a factor that caused the geese to use fields outside the area.
Land and Food Systems, Faculty of
Graduate

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20

Armstrong, William Terry. "Predation and antipredator tactics of nesting black brant and lesser snow geese." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ27398.pdf.

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21

Geese, Karina [Verfasser], C. [Akademischer Betreuer] Tschierske, and G. [Akademischer Betreuer] Mehl. "Synthese lateral substituierter bent-core Mesogene / Karina Geese. Betreuer: C. Tschierske ; G. Mehl." Halle, Saale : Universitäts- und Landesbibliothek Sachsen-Anhalt, 2012. http://d-nb.info/103772545X/34.

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22

Campton, R. Paul. "Agricultural grazing by pale-bellied Brent geese Branta bernicla hrota on Strangford Lough." Thesis, Queen's University Belfast, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.287400.

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23

Vahlström, Isak. "Habitat selection and movements of Taiga Bean Geese Anser fabalis fabalis during spring and early summer." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-133315.

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Habitats vary in terms of food and predation risk between each other and over time. The aim of this study was to describe the daily cycle of habitat selection and movements of Taiga Bean Geese Anser fabalis fabalis during spring and early summer. For that I used data from 11 Taiga Bean Geese marked with GPS-transmitters in Vilhelmina county, Sweden. I coded every position to a habitat and calculated length of movements between the positions. In most cases the geese spent the night at wetlands and agricultural fields, probably feeding, and the day close to lakes and streams, probably resting. The geese moved between those habitats in the morning and in the evening. These movements between habitats are more likely due to change in predation pressure than resource depletion of the first habitat.

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24

Gjetvaj, Branimir. "Multiple and widespread integration of mitochondrial DNA sequences in the nuclear genomes of geese." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ31927.pdf.

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25

McKay, Julie E. "Export structures in a regional context : income elasticity, competitiveness and the flying geese paradigm." Thesis, University of Cambridge, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.421348.

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26

Lane, Simon John. "Selection of feeding sites by overwintering dark-bellied Brent geese Branta Bericla Bernicla (L.)." Thesis, University of East Anglia, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359380.

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27

Teasdale, Dion, and d. teasdale@yarraranges vic gov au. "The Goose at Goldie's Milk Bar: The Nature of Human Animal Relationships in Three Modern Literary Fairy Tales." RMIT University. Creative Media, 2007. http://adt.lib.rmit.edu.au/adt/public/adt-VIT20071219.100227.

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The Goose at Goldie's Milk Bar is a modern literary fairy tale written in the form of a novel for adult readers. Set in the fictional Australian small country town of Baxters Creek, it tells the story of Goldie Sullivan, an elderly former milk bar proprietor who has an affair with a gigantic cognisant gander. Goldie lives out the back of the town's old milk bar, hiding from the surrounding narrow-minded community, until late one night she witnesses a bolt of lightning strike the bell tower on the nearby church. When she goes to investigate, Goldie finds the body of a large bird buried in the debris and, believing it is an omen, she carries the half-dead bird home on her back. As she rehabilitates the bird, Goldie discovers there is more to the feathered creature than she first thought. The bird, a giant gander blown off course and struck down in the middle of migration, reveals an advanced awareness of humanity and the profound ability to comprehend the sorrow in Goldie's life. Through a shared appreciation of jazz music, Goldie and the goose learn to communicate and a close friendship ensues. Goldie teaches the goose to dance, the pair share baths and the goose moves into Goldie's bedroom. Before too long, Goldie finds herself in the midst of a most indecent affair. Goldie's relationship with the gander unfolds against a backdrop of other unconventional relationships. Kevin Dwyer, the new reporter in town finds himself drawn to the shire maintenance worker, Travis Handley. Real estate agent Alexander Bourke has taken Lynne Fontaine, the chef at the local Chinese restaurant, as his oriental mistress, and recently windowed farmer, Mary Peddley, sets tongues wagging with the one-legged publican, Jack Diamond. The novel uses the human animal narrative to explore the premise that fate is driven by unseen, sometimes magical forces that manifest in inexplicable ways to reveal the hidden truths of people. The writing of the novel has been supported by research conducted for an exegesis titled, The Nature of Human Animal Relationships in Three Modern Literary Fairy Tales. The exegesis identifies and discusses the nature of the central human animal relationships in three novels: Yann Martel's Life of Pi, Peter Hoeg's Woman and the Ape and the writing project, The Goose at Goldie's Milk Bar. The exegesis identifies and discusses the roles and functions the human and animal characters perform in the three novels through a comparative analysis of the narrative theories of early Russian Structuralist, Vladimir Propp. The exegesis also identifies and discusses the types of transformation the human and animal characters undergo, and conducts a comparative analysis of the theories of English academic and fairy tale historian, Jack Zipes. Finally, the exegesis analyses and discusses the multi-dimensional nature of the bonds formed by the human and animal characters and demonstrates how writers of modern literary fairy tales seek to awaken the reader to the possibilities of relationships with animals beyond usual human understanding or experience.

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Denny, Matthew J. H. "Waterfowl disturbance : effects of hunting in a coastal ecosystem." Thesis, University of Sunderland, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.391451.

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29

Allport, Gary Andrew. "The feeding ecology and habitat requirements of overwintering Western Taiga Bean Geese (Anser fabalis fabalis)." Thesis, University of East Anglia, 1991. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.304468.

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30

Geese, Marc [Verfasser], and Bernd [Akademischer Betreuer] Jähne. "Image Sensor Nonuniformity Correction by a Scene-Based Maximum Likelihood Approach / Marc Geese. Betreuer: Bernd Jähne." Heidelberg : Universitätsbibliothek Heidelberg, 2013. http://d-nb.info/1061111695/34.

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31

Geese, Anne [Verfasser]. "Earth's magnetic field : observation and modelling from global to regional scales / Anne Geese. Deutsches GeoForschungsZentrum GFZ." Potsdam : Deutsches GeoForschungsZentrum GFZ, 2011. http://d-nb.info/1009923501/34.

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32

Quinn, John Leo. "The timing of nesting in red-breasted geese and their nesting association with birds of prey." Thesis, University of Oxford, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.368083.

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33

[Verfasser], Geese Anne, and K. H. [Akademischer Betreuer] Glaßmeier. "Earth's Magnetic Field: Observation and Modelling From Global to Regional Scales / Geese. Anne ; Betreuer: K.H. Glaßmeier." Braunschweig : Technische Universität Braunschweig, 2010. http://d-nb.info/1175826774/34.

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34

Silk, Matthew John. "Facebook for geese : the causes and consequences of non-random social associations in a group forager." Thesis, University of Exeter, 2014. http://hdl.handle.net/10871/16402.

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The application of social network analysis in animals has facilitated research into dynamic fission-fusion social systems. These have important implications for the evolution of individual social behaviour, and for population-level processes such as information transfer and disease dynamics. This thesis explores the assumptions behind using networks to study animal social systems in projects using individual-marking or biologging. It then applies these methods to study social structure in a study population of a long-distance migrant, the light-bellied brent goose. It provides new insights about the causes and consequences of social structure, and individual social strategies, in a fission-fusion social system in the context of a migratory cycle. We show that social networks have a strong spatial structure, but with additional non-randomness once these spatial constraints have been accounted for. However, individual social associations are seasonally dynamic. These social structures, and their seasonal dynamics, are highly stable between years. Furthermore, non-random associations have important implications for foraging success. Individuals foraging in more familiar flocks are able to spend more time feeding, and less time involved in aggressive interactions or vigilant. This results in social network position influencing the ability of some individuals to gain body condition during spring staging and leave for breeding grounds in better condition. These results highlight the importance of understanding social networks when investigating individual time-budgets in social foragers. They also emphasise the importance of establishing the link between individual status and social network position before drawing any conclusions about the role of social network position in explaining differences in fitness between individuals in fission-fusion social systems.

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35

Gladbach, Anja [Verfasser], and Bart [Akademischer Betreuer] Kempenaers. "Individual fitness correlates in consecutive years of pair bond in Upland Geese / Anja Gladbach. Betreuer: Bart Kempenaers." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2011. http://d-nb.info/1015925189/34.

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36

Ayers, Christopher Ryan. "Effects of Mowing on Anthraquinone for Deterrence of Canada Geese and Survey of Canada Goose Fecal Contaminants." NCSU, 2009. http://www.lib.ncsu.edu/theses/available/etd-07102009-101753/.

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Resident Canada goose (Branta canadensis) populations have increased in urbanizing regions of the eastern United States, where man-made ponds and lakes surrounded by managed turfgrass offer ideal habitats. High concentrations of geese in these areas may cause feces accumulation, outbreaks of zoonotic diseases, eutrophication of adjacent waterways, and spread of turfgrass weeds. Although repellents effectively deter geese from turfgrass areas, frequent mowing (e.g., as in corporate parks and golf courses) may impact the efficacy of repellents. We tested the effect of 2 different mowing schedules on the longevity of FlightControlÂ® PLUS (FCP), an anthraquinone based avian digestive irritant. From June 2007 to October 2008, we conducted 4, 30-day experiments of repellent efficacy on free-ranging geese at 8 sites. Sites were divided into 4 0.1-ha plots, each containing a unique treatment of the repellent (treated or untreated) and mowing frequency (4-day or 8-day). Each experimental session consisted of a 7-day pretreatment period of baseline observations and 30 days of post-treatment observations. Goose droppings were collected daily from transects in each plot, and percent of grass with FCP remaining was measured daily. Also, we tested 234 droppings for Giardia lamblia using a ProSpect Giardia EZ Microplate Assay, measured amounts of nitrogen (TKN) and phosphorus (TP) in 304 fecal samples, and observed 127 potted droppings for plant germination in a greenhouse. On average, goose use of FCP treated plots was lower than on untreated plots for 30 days. Over the 30 day period, goose use and FCP coverage was similar between treated plots mowed every 4 and 8 days. Further, the average FCP coverage on grass blades in treated plots decreased steadily from approximately 95% to 10%. None of the fecal samples tested positive for Giardia. The average amounts of TKN and TP in fecal samples were 24.2 mg/g (range = 12.6 â 55.7) and 3.6 mg/g (range = 1.4 â 8.3) of dry matter, respectively, with an average of 4,318.0 g/ha/day deposited by â42 geese. No controls germinated plants, whereas 4 (3.1%) fecal samples germinated plants: Pennsylvania smartweed (Polygonum pennsylvanicum L.), annual bluegrass (Poa annua L.), and 2 Kyllinga spp. FlightControlÂ® PLUS effectively repelled Canada geese, but longevity of the chemical depends on keeping treated blades alive and under mowing height. Transmission of G. lamblia by Canada geese does not appear to be a high risk. Resident Canada goose droppings at our study sites contribute 17 â 31% of recommended N and 17 â 38% of recommended P in lawn fertilization rates. Kyllinga spp. and annual bluegrass are turfgrass weeds; however the low percentage of germinations indicates little risk of turf-feeding Canada goose weed dispersal. I recommend using FCP on areas of highest goose concentration before and when they are most prevalent. This should be done along with reduction of palatable turfgrass and annual lethal reductions. Fertilization rates should be adjusted depending on the number of geese present and the concentration of their droppings in order to save money and prevent eutrophication. Periodic testing of goose droppings for Giardia lamblia and weed seeds may prevent infestations. Research is needed to find the optimal mowing rate to keep treated blades alive and below mowing height. Information on the movements of resident Canada geese will be important for management of free-ranging populations. Identifying or developing turfgrasses that are unpalatable to Canada geese would be highly useful. If geese test positive for Giardia sp. cysts, trophozoites should be collected to identify species. The alternative to this method is to develop species specific assays. Also, research is needed on the result of resident Canada goose fecal nitrogen and phosphorus deposition on adjacent water quality.

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37

Anderson, Guy Q. A. "Feeding habitat selection by pale-bellied brent geese Branta bernical hrota at Lindisfarne National Nature Reserve, U.K." Thesis, University of Sunderland, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.285279.

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38

Lang, Alison. "Individual behaviour and population ecology : developing an individual based model for the Svalbard population of barnacle geese." Thesis, University of Bristol, 2000. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.302157.

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39

Coluccy, John Matthew. "Reproductive ecology, bioenergetics, and experimental removal of local giant Canada geese (Branta canadensis maxima) in central Missouri /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3012961.

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40

Iles, David Thomas. "Drivers of Nest Success and Stochastic Population Dynamics of the Common Eider (Somateria mollissima)." DigitalCommons@USU, 2012. https://digitalcommons.usu.edu/etd/1279.

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Anthropogenic perturbations to Arctic ecosystems have influenced large-scale climate processes, as well as finer-scale ecological relationships within and amongst populations of species. Life history theory predicts a trade-off between the temporal variation in a vital rate and its impact on population dynamics. Here, we examine the drivers of long-term variation in reproductive success in a sub-Arctic common eider (Somateria mollissima) colony, and evaluate the impacts of variation in reproductive success on eider population dynamics. In Chapter 2, we develop a suite of nest survival models to evaluate the effects of variation in predator abundance, the availability and spatial distribution of alternative prey, and breeding season climate on annual common eider nest success. Eider nest success declined across the 41 years of study, but was also highly variable across years. Annual variation in nest success was driven by a complex interaction between predators and alternative prey, as well as breeding season climate. Our results suggest that increased abundance of snow geese (alternative prey) may buffer annual fluctuations in arctic fox abundance, yet result in a long-term decline in eider nest success suggesting apparent competition via other predator species (e.g. gulls). The effect of breeding season climate was subtle compared to the influence of biotic factors and indicated that cold, wet conditions in early spring were correlated with decreased nest success, while warm, wet conditions in late spring increased eider nest success. In Chapter 3 we develop a stochastic population model to evaluate the relative effects of variation and covariation amongst multiple vital rates on population dynamics, and determine the impact of long-term changes in the abundance of alternative prey on eider population dynamics. Consistent with life history predictions, we found that proportional changes in adult survival have the largest impact on population dynamics, yet high variation in the vital rates underlying fertility contribute more to actual variation in population growth. The eventual exodus of alternative prey from the eider colony reduced the long-term growth rate, primarily through negative impacts on mean nest success.

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41

Sertle, Michael R. "Nesting success, gosling growth, and adult body condition of giant Canada geese (Branta canadensis maxima) in southern Illinois /." Available to subscribers only, 2006. http://proquest.umi.com/pqdweb?did=1136077871&sid=7&Fmt=2&clientId=1509&RQT=309&VName=PQD.

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42

Peterson, Stephen L. "Legacy Effects of Habitat Degradation by Lesser Snow Geese on Ground-Nesting Savannah Sparrows along the Hudson Bay Lowlands." DigitalCommons@USU, 2013. https://digitalcommons.usu.edu/etd/1455.

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Increased growth of the mid-continent population of Lesser Snow Geese (LSGO) has led to the degradation of coastal salt marsh and sedge meadow habitats across Canadian Arctic and sub-Arctic ecosystems. It is believed that a human-induced trophic cascade caused by agricultural habitat modification along migratory routes and wintering grounds has contributed to the increase in LSGO numbers, which has resulted in the alteration of habitat quality and connectivity along northern breeding and stopover sites used by various avian species. This habitat degradation has been shown to decrease the presence and temporal persistence of ground-nesting passerine and shorebird species at a local level and may lead to decreases of Arctic / sub-Arctic breeding avian species across landscapes that LSGO utilize and degrade. In 1999, four paired study plots were established, and used in conjunction with a single study plot from 1976, in order to measure the composition of habitat parameters (barren ground extent; graminoid and shrub cover) and to estimate the number of avian nests found in these plots. Using this historical data along with our findings from 2010 and 2011, our main objectives were to: 1) document the change in the aforementioned habitat parameters over time; 2) estimate the local nesting occupancy rates of the common Savannah Sparrow (SAVS), a robust and adaptable ground nester; and 3) determine which habitat variables are indicative of the rates of change and occurrence of nesting by SAVS within the study plots. By using ANOVA, linear mixed effects, and multi-state occupancy models, results suggest that an increase in barren ground, decreases in shrub and graminoid cover, and a loss of connectivity between suitable nesting patches has led to a 10% (λ = 0.90) annual decline in the probability that SAVS nesting occurred across the study plots from 1999 to 2010. These model results may be used to estimate long-term trends in persistence of breeding SAVS and other similar ground-nesting avian species that share habitats with LSGO along Arctic and sub-Arctic ecosystems. (93 pages)

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43

Kowalska, Emilia. "Ocena jakości surowców pozyskiwanych od drobiu żywionego mieszankami paszowymi z udziałem łubinu." Rozprawa doktorska, Uniwersytet Technologiczno-Przyrodniczy w Bydgoszczy, 2019. http://dlibra.utp.edu.pl/Content/1614.

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Celem badań była ocena jakości jaj, wartości rzeźnej i mięsa, pozyskanych od drobiu żywionego mieszankami paszowymi z udziałem nasion łubinu. Oceniono również wpływ stosowania mieszanek paszowych z łubinem na wyniki produkcyjne gęsi i kaczek
The aim of the study was to assess the quality of eggs, slaughter value and meat obtained from poultry fed with compound feed containing lupine seeds

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44

Geese, Helene [Verfasser], Bernd [Akademischer Betreuer] Clement, and Philip [Gutachter] Rosenstiel. "Charakterisierung und Untersuchung neuer JAK-Inhibitoren zur Behandlung chronisch entzündlicher Darmerkrankungen / Helene Geese ; Gutachter: Philip Rosenstiel ; Betreuer: Bernd Clement." Kiel : Universitätsbibliothek Kiel, 2017. http://d-nb.info/122202926X/34.

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45

Chiou, Tzuoh-Shiang, and 邱作相. "Changes of blood constituents in growing geese." Thesis, 1997. http://ndltd.ncl.edu.tw/handle/83151838164705848875.

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46

Walter, Scott Edward. "Nesting ecology of eastern prairie population Canada geese." 1999. http://catalog.hathitrust.org/api/volumes/oclc/45453680.html.

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47

Smith, Arthur E. "Movement and harvest of Mississippi Flyway Canada Geese." 1996. http://catalog.hathitrust.org/api/volumes/oclc/37258739.html.

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Thesis (M.S.)--University of Wisconsin--Madison, 1996.
Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 57-61).

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48

陳新德. "THE STUDY OF ELECTROCHEMICAL TREATMENT ON GEESE WASTEWATER." Thesis, 2003. http://ndltd.ncl.edu.tw/handle/24890362997441801170.

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碩士
國立中興大學
生物產業機電工作學系
91
Abstract Taiwan faces the shortage of water resource and condition of serious pollution recently. The government had spent a great effort to find out the policy for solving the problems, which brought from the farming water and its disposal management. In this study, an electro-chemical method was used to process the geese excretion wastewater in order to safe the water resource and reach the sewage disposal standard of EPA. In the fundamental experiments, by using a small electro-coagulator with 5 L effective volume, the efficiency of the aluminum electrodes was higher than iron electrodes. The average removal rates of the BOD, COD, SS and turbidity(NTU) which were obtained by the continuous recycled fundamental experiments with electric voltage 110V, electric current 1.5 A, electrodes clearance 2 cm and electro-coagulation time 5 min , were 94.74, 91.15, 78.65 and 58.73%, respectively reached the disposal standard. The removal effects of the TDS and EC were not significant for the level of pH between 7.19 and 7.64 , which were only 9.61 and 9.8%, respectively. However, the de-color effect of the dark black geese excretion was significant. When the processing volume scaled up to 1048 L, the removal rates of the BOD, COD, SS and turbidity (NTU) which were obtained by the continuous recycled experiments with electric voltage 220V, electric current 20 A, electrodes clearance 7 cm and HRT 5 min , were 50.67, 51.47, 71.76 and 62.99%, respectively. The removal rates were lower than those of the small electro-coagulator. However, they were all reached the disposal standard. Under the above conditions, the estimated electric consumption for processing the geese wastewater was 0.315kw-hr/ton. The overall results indicated that the removal rate of the pollutant increased with the increasing of the electric supply and the electro-coagulation time, but decreased with the increasing of the electrodes clearance. Keywords: electro-chemical, geese excretion wastewater, BOD, COD, SS

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Chan, Ching-Hann, and 陳卿漢. "Profiles of Blood Constituent during Laying and Non-laying Periods of Egg Production in White Roman Breeding Geese and New Breeding Geese." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/78012184517244687554.

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碩士
國立中興大學
動物科學系所
95
The purpose of this study was to investigate the profiles of blood constituent and hematology during laying and out of laying periods in White Roman breeding geese and new breeding geese. Two trials were conducted in this experiment. In trial one, forty forty-week old new breeding geese and sixty two-year-old breeding geese were randomly allotted into four groups: breeding geese in laying period, breeding geese out of laying period, new breeding geese in laying period, and new breeding geese out of laying period. During the experimental period, blood samples were collected biweekly for packed cell volume (PCV), plasma pH, plasma estradiol (E2), plasma progesterone (P4), ionized calcium, plasma triglyceride, total protein, and cholesterol concentration determinations. Aliquots of blood samples were also used for differential counts of leukocytes, and the ratios of heterophils to lymphocytes during laying or out of laying periods were calculated. In trial two, five two-year-old breeding laying geese which were randomly chosen form twenty breeding geese. The brachial vein of breeding geese was cannulated with silastic medical grade tubing, blood were sampled at one hour interval for ninety six hours and the egg weights were recorded. The blood samples were used for differential counts of leukocytes, and the ratios of heterophils to lymphocytes in laying period were calculated. The results of trial one showed that PCV and the concentrations of plasma estradiol, progesterone, and cholesterol of breeding geese and new breeding geese during laying period were significantly higher than those during out of laying period (P<0.05). however, there were no significantly differences between breeding geese and new breeding geese during out of laying periods. The concentrations of plasma triglyceride and ratios of heterophils to lymphocytes in breeding geese and new breeding geese during laying period were significantly higher than those during out of laying period (P<0.05). The ratios of heterophils to lymphocytes of breeding geese and new breeding geese at first sampling time was obviously higher than those of the other sampling times. The results of trial two showed that the ratios of heterophils to lymphocytes in laying breeding geese increased significantly precede two hours by egg laying. However, there were no significantly differences in the ratios of heterophils to lymphocytes between each breeding geese. It was concluded that changes of blood constituents may be markedly different between laying period and out of laying period. However, the increasing of heterophils to lymphocytes ratios in laying period could be not only a selection criterion for heat stress, but also for egg production in geese. Key Words: Breeding geese, New breeding geese, Laying period.

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Louhaichi, Mounir. "Assessment of impacts of Canada geese on wheat production." Thesis, 1999. http://hdl.handle.net/1957/33615.

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Numbers of wild Canada geese (Branta canadensis) have increased dramatically during the past 30 years in the lower Columbia and Willamette Valley systems. The damage they cause by grazing and trampling plants can be substantial. The objectives of this research were to: 1) Develop methods that provide reliable estimates of goose impact on wheat yield and quality, and 2) Develop methods to separate goose damage from other factors that lower yield such as poor soil or waterlogging. To document grazing impacts, color aerial photography was combined with Global Positioning System (GPS) and precision farming technology. Field-scale color aerial photographs (1:14,000 scale) were acquired four times during each growing season: in January, March, April, and just prior to harvest in July. Each flight was coupled with ground truth data collection to verify exact cause of spectral signature variation or variations in wheat cover. Such data included wheat height, number of goose droppings, and a relative rating of goose grazing intensity. At each sampling point a platform photograph and a GPS location were taken. Wheat yield impact varied considerably as field size, shape and proximity to road varied. Yield maps revealed that, goose grazing had reduced grain yield by 25% or more in heavily grazed areas. At harvest time during the first year, wheat grain in the heavily grazed areas had higher moisture content due to delayed maturity. Therefore those areas were harvested two weeks later. Heavily grazed areas also had more weeds than ungrazed portions of the field. Late-season (April) grazing was more damaging to wheat yield than was earlier season grazing, but early season grazing did have an impact on yield. Intensely hazed fields had lower levels of damage than did fields or portions of fields that were not as vigorously guarded. Our results illustrate very practical ways to combine image analysis capability, spectral observations, global positioning systems, precision farming and ground truth data collection to map and quantify field condition or crop damage from depredation, standing water, or other adversities. Image analysis of geopositioned color platform photographs can be used to stratify winter wheat fields into impact units according to grazing intensity. Ground-truth data, when collected in conjunction with a GPS, provided the information needed to locate and establish the spectral properties of impacted areas. Once the spectral properties of a representative area were identified, information could be extrapolated to other areas with the same characteristics. In addition, this method could be used in conjunction with aerial photography to verify areas of grazing. The combination of two or more of these tools would provide farm managers and agricultural consultants with a cost-effective method to identify problem areas associated with vegetation stress due to heavy grazing by geese or other factors.
Graduation date: 1999

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Dissertations / Theses on the topic 'Geese'

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