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Dissertations / Theses on the topic 'Breeding sites'

Author: Grafiati

Published: 4 June 2021

Last updated: 26 July 2025

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1

Romero-Vivas, Claudia Maria Elisa. "Studies on Aedes aegypti breeding sites and Dengue virus." Thesis, London School of Hygiene and Tropical Medicine (University of London), 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.298742.

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2

Bowler, Jonathan Mark. "Feeding strategies of Bewick's swans (Cygnus columbianus bewickii) in winter." Thesis, University of Bristol, 1996. http://hdl.handle.net/1983/34493c0d-3cf8-4f31-936e-b0918cf66f2b.

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3

Njunwa, K. J. "Studies on the productivity of 'Anopheles' breeding sites in relation to adult mosquito density." Thesis, London School of Hygiene and Tropical Medicine (University of London), 1993. http://researchonline.lshtm.ac.uk/4648005/.

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Entomological studies were conducted in Tanga region, Tanzania. over a two year period, to assess the effect of various environmental features and larval population density on the productivity of An. gambiae s.l. breeding sites for adult mosquitoes. These studies included: (i) Nineteen rounds of systematic dipping for larvae in about 150 mapped potential breeding sites around two villages. During this time records were kept for each potential breeding site of the dominant plants, suspended mud, odour, shade, depth, speed of water-flow, nature of margin, surface particles, and other features. T

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4

Cardoso, João Pedro Monteiro. "Wolf breeding sites in human grounds: insights on habitat features and sources of disturbance to support conservation measures." Master's thesis, Universidade de Évora, 2022. http://hdl.handle.net/10174/31369.

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Disturbance at key areas used by wolves may have negative impacts on population dynamics and species recovery, becoming particularly critical in regions with high human activity, such as the Iberian Peninsula. This study evaluated the sources of human-related disturbances and ecological features in the Iberian wolf key areas, including feeding sites, highway crossing structures and, more exhaustively, breeding sites, using available data from camera trapping obtained in two areas within wolf range in Portugal. Differences at spatial and temporal level were observed in the use of these areas by

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5

Wallace, Catherine. "DISTRIBUTION AND MOLECULAR ANALYSIS OF AVIAN MALARIA VECTORS ON FOUR CENTRAL VIRGINIA PROTHONOTARY WARBLER (PROTONOTARIA CITREA) BREEDING SITES." VCU Scholars Compass, 2010. http://scholarscompass.vcu.edu/etd/172.

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Avian malaria is a devastating disease that has decimated numerous bird species. This study sought to identify the vectors of avian malaria at four central Virginia Prothonotary warbler breeding sites. Twenty one thousand mosquitoes were collected and Culex salinarius, Cx. erraticus, and Cx. pipiens/restuans were found to be the dominant species at these sites. Geographic factors, such as crop land and forest type, were determined to be potential indicators for species abundance variation between sites. Of the mosquitoes collected, ninety one (0.4%) were identified as blood fed. The blood

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6

Strum, Khara M. "Exposure of migratory shorebirds to organophosphorus and carbmate pesticides at migratory stopover and non-breeding sites in the western hemisphere." Thesis, Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/807.

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7

Vaz, Suzana Casaccia. "Drosofilídeos (Diptera) associados a flores e fungos da mata atlântica: identificação de novas espécies e evolução do cromossomo Y." Universidade de São Paulo, 2014. http://www.teses.usp.br/teses/disponiveis/41/41131/tde-09032015-073910/.

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A análise do conteúdo gênico do cromossomo Y em 12 espécies de Drosophila com genoma sequenciado em 2008 mostrou que o Y é pouco conservado entre espécies e está em processo de aquisição de genes, o que contradiz o modelo atual de evolução de cromossomos sexuais que o descreve como um homólogo degenerado do X, com constante perda de genes. Este resultado inicial incitou o estudo espécies adicionais de Drosophila e de gêneros próximos. Uma dificuldade relevante para obtenção de espécimes é que muitos grupos taxonômicos de drosofilídeos não estão disponíveis nos “stock-centers”, e se

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8

Provatti, Ovando José. "Habitats larvários de Aedes aegypti, vetor da dengue, em cinco áreas de amostragem na região norte do município de Campinas, estado de São Paulo." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/317930.

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Orientador: Ângelo Pires do Prado<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-16T00:18:43Z (GMT). No. of bitstreams: 1 Provatti_OvandoJose_M.pdf: 2946008 bytes, checksum: 569d89a94da7e3ec7ba225959e2c8e30 (MD5) Previous issue date: 2010<br>Resumo: A dengue tem se tornado um importante problema de saúde pública em vários continentes. Nas Américas o Aedes aegypti é o principal vetor da doença em razão de sua elevada competência vetorial e hábito antropofílico. Assim, é fundamental que o sistema de vigilância municip

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9

Diniz, Patricia Placoná. "Vigilância entomológica de vetores de arbovírus na cidade de São Paulo: análise espaço temporal de criadouros, de acordo com fatores sazonais e socioeconômicos, no período de 2012 a 2016." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/6/6132/tde-10072018-122912/.

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Introdução: Conhecer e monitorar fatores associados a transmissão de arboviroses são um grande desafio para os gestores de saúde pública e também uma necessidade para regiões onde há registro da circulação de arbovírus e a presença de vetores. Objetivos: Identificar os principais grupos de recipientes que podem se tornar ou são criadouros de mosquitos vetores no Município de São Paulo e verificar se os mesmos sofrem influências de fatores sazonais e socioeconômicos em sua distribuição. Método: Foram levantados dados das inspeções realizadas nas atividades de vigilância e controle de Aedes aegy

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10

Vermaak, J. A. "Genetic variation for growth, wood and fibre properties of Pinus patula families grown on six sites in South Africa." Thesis, Link to the online version, 2007. http://hdl.handle.net/10019/1355.

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11

Badan, Xavier. "l'élevage montagnard face au paysage patrimonial : organisation et réseaux d'acteurs autour de la construction d'une nouvelle représentation collective : l’exemple des sites « Causses et Cévennes » et « Chaîne des Puys – Faille De Limagne »." Thesis, Université Clermont Auvergne‎ (2017-2020), 2017. http://www.theses.fr/2017CLFAL008/document.

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Qu’est-ce qu’un paysage patrimonial ? C’est un nouveau regard porté par des acteurs sur un paysage qui, selon la définition de Lévy et Lussault (2003) « est censé mériter d’être transmis du passé, pour trouver une valeur dans le présent ». C’est « un ensemble d’attributs, de représentations et de pratiques fixés sur un objet non contemporain […] dont est décrété collectivement l’importance présente, intrinsèque (ce en quoi cet objet est représentatif d’une histoire des objets de société) et extrinsèque (ce en quoi cet objet recèle des valeurs supports d’une mémoire collective), qui exige qu’on

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12

Fernandes, Gl?ucia de Oliveira. "Culic?deos vetores em uma unidade de conserva??o da caatinga na regi?o do serid? no Rio Grande do Norte aspectos da transmiss?o de doen?as." Universidade Federal do Rio Grande do Norte, 2011. http://repositorio.ufrn.br:8080/jspui/handle/123456789/18217.

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Made available in DSpace on 2014-12-17T15:54:57Z (GMT). No. of bitstreams: 1 GlauciaOF_DISSERT.pdf: 4217190 bytes, checksum: 41f7567f8c73fdeb4a77a570f0e13c41 (MD5) Previous issue date: 2011-02-24<br>The scarcity of occurrence records of culicid species, transmitting insects of etiologic agents for arboviruses, protozoan diseases and philarioses, and lack of information about their interactions with the forest environment make the Caatinga one of the most unknown biomes in Brazil. The aim of this study was to identify culicid species in a conservation unit located in a preserved area of the C

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13

Bergmann, Stefan A. "Breeding-site characteristics of pond breeding amphibians at White-horse ponds, Crater Lake National Park /." View full-text version online through Crater Lake Digital Research Collection, 1997. http://craterlakelib.oit.edu/u?/craterlake,204.

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14

Chauhan, Vijay Pal Singh. "Environmental adjustments in estimation of breeding value of dairy sires." Thesis, University of Edinburgh, 1986. http://hdl.handle.net/1842/14443.

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15

Lehtonen, Emily. "Breeding Site Selection and Breeding Success in Red-throated Divers (Gavia stellata): Implications for Wind Power Development." Thesis, Uppsala universitet, Institutionen för ekologi och genetik, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-314976.

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Our alarming rate of resource exploitation and its consequences on the environment is fuelling an increase in sustainable energy production around the world. Wind power appears to be a particularly promising energy source relative to its environmental footprint, with the exception of potential negative effects of wind power on birds. Varying results from impact assessments around the world indicate that knowledge of both abiotic and biotic factors, as well as bird behavior and ecology, is required to assess the cumulative impact of any given wind farm on local bird communities. This study aims

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16

Camargo, Amanda Alves. "Estudo da resposta de mosquitos (Diptera:Culicidae) a diferentes tipos de criadouros e condições de fatores físico-químicos da água." Universidade de São Paulo, 2018. http://www.teses.usp.br/teses/disponiveis/6/6143/tde-15062018-130327/.

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A família dos culicídeos é diversa e possui muitas espécies com alta relevância epidemiológica e que transmitem os patógenos causadores de doenças como dengue, febre amarela e malária. Os imaturos se criam exclusivamente na água e nos mais diversos tipos de criadouros, podendo ser influenciados por fatores biológicos e fatores físico-químicos, que incluem pH, salinidade, condutividade, sólidos totais dissolvidos, entre outros. Entender as variações das condições dos criadouros é importante para entender e esclarecer como esses fatores agem no desenvolvimento dos imaturos, na sua fisiologia e n

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17

de, Forest Leah Naoko. "The effects of age, timing of breeding, and breeding site characteristics on the reproductive success of the thick-billed murre, Uria lomvia." Thesis, University of Ottawa (Canada), 1993. http://hdl.handle.net/10393/10821.

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Age-specific reproductive parameters, including reproductive success, of young (four and five-year old) and older (>7 years old) breeding Thick-billed Murres (Uria lomvia) were compared on a colony at Coats Island, N.W.T. in 1990 and 1991. Young birds laid smaller eggs later in the season than older birds. Older birds had higher hatching and reproductive success than young birds, but fledging success did not differ. The chicks of young birds at 14 days were lighter and smaller than those of older birds. There was a seasonal decline in hatching and reproductive success in both years for the tot

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18

Cunnington, David C. "Breeding site suitability and optimal egg size in the spotted salamander, Ambystoma maculatum." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp03/MQ31822.pdf.

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19

Hocking, Daniel J. "Gray treefrog breeding site selection and offspring performance in response to forest management." Diss., Columbia, Mo. : University of Missouri-Columbia, 2007. http://hdl.handle.net/10355/5103.

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Thesis (M.S.)--University of Missouri-Columbia, 2007.<br>The entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file. Title from title screen of research.pdf file (viewed on October 26, 2007) Includes bibliographical references.

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20

Bokach, Matthew John. "The relative influences of predation and prey availability on ardeid breeding colony site selection." [Gainesville, Fla.] : University of Florida, 2005. http://purl.fcla.edu/fcla/etd/UFE0009586.

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21

Sen, Bilgecan. "Breeding Ecology Of The Egyptian Vulture (neophron Percnopterus) Population In Beypazari." Master's thesis, METU, 2012. http://etd.lib.metu.edu.tr/upload/12615366/index.pdf.

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The aim of this study was to determine the habitat features affecting nest site selection and breeding success of the endangered Egyptian Vultures (Neophron percnopterus) breeding around the town of Beypazari. We searched and monitored nest sites in the study area (750 km2) for the years 2010 and 2011. The differences in terms of habitat features between nest sites and random points distributed along cliffs, and between successful and failed nest sites were investigated using both parametric approaches and machine learning methods with 21 habitat variables. The size of the Beypazari population

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22

Bouchard, Colin. "In Atlantic salmon, space use of potential breeders stabilises population dynamics and shapes sexual selection." Thesis, Pau, 2018. http://www.theses.fr/2018PAUU3024/document.

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La fragmentation des habitats ainsi que la réduction de leur disponibilité sont des menaces importantes pour les écosystèmes, notamment aquatiques. La disponibilité et la qualité des sites de fraie du saumon Atlantique peut donc être limitante dans certaines rivières. Après la migration en rivière, les femelles saumon vont chercher à s'établir dans un des sites de fraie disponibles. La distribution spatiale des femelles va alors influer sur la distribution spatiale des mâles reproducteurs qui vont chercher soit à monopoliser plusieurs femelles (pour les mâles dominants), soit à les approcher e

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23

Flynn, Laura. "Philopatry, nest site tenacity, and mate fidelity in semipalmated plovers, Charadrius semipalmatus, breeding at Churchill, Manitoba." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp04/mq21686.pdf.

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24

Guyn, Karla Lee. "Breeding ecology of northern pintails, nesting ecology, nest-site selection, nutrient reserve use and brood ecology." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0031/NQ63873.pdf.

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25

Smith, Steve, Debra Conta, and Albert Dobrenz. "Performance of Germination Salt Tolerant Alfalfa on a Non-Saline Site." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/203791.

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26

Anderson, Robert Gray. "BREEDING PRODUCTIVITY, NEST DISTRIBUTION, AND POPULATION ECOLOGY OF WOOD DUCKS IN FLOODPLAIN AND UPLAND FORESTS OF SOUTHERN ILLINOIS." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/dissertations/154.

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Wood ducks are thought to depend on mature hardwood forests juxtaposed with palustrine wetlands but these habitats have been continuously degraded or destroyed since European settlement. Wood ducks are adaptable and the use of marginal habitats and nest boxes has extended their range and probably was important to the recovery of wood duck populations. Until now no study has analyzed the contribution of upland nesting to local population growth and maintenance. I investigated predation effects on nest site selection using wood duck nests and simulated nests placed in natural cavities. Using dem

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27

Juarez, Berrios Edwin Alfredo. "Habitat relationships of seven breeding bird species in the Leon River Watershed investigated at local scales." Texas A&M University, 2004. http://hdl.handle.net/1969.1/1574.

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Over the past 100150 years Texas rangelands have dramatically changed from native open savannahs to dense woodlands. On the Edwards plateau, a major management concern is the increasing encroachment of Ashe juniper (Juniperus ashei). Preceding an anticipated brush management program, I investigated the presence, co-occurrence, and habitat relationships of 7 breeding bird species in the Leon River Watershed in central Texas, USA: black-capped vireo (Vireo atricapillus), golden-cheeked warbler (Dendroica chrysoparia), northern bobwhite (Colinus virginianus), white-eyed vireo (Vireo griseus), Be

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28

Ozbahar, Ilker. "Breeding Biology, Population Size And Spatial Distribution Of A Common Nightingale (luscinia Megarhynchos Brehm, 1831) Population At Yalincak (ankara)." Master's thesis, METU, 2005. http://etd.lib.metu.edu.tr/upload/12606981/index.pdf.

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Many bird populations are known to show strong territoriality as well as high site fidelity during breeding. The Common Nightingale (Luscinia megarhynchos) is one of many such migratory species that annually occupies the same favourable habitat. Especially dominant males prefer to breed in the same area every year, and high fidelity probably assures high breeding success. This study aims to investigate breeding biology, population size and spatial distribution of nightingales at a small area in Yalincak within the METU campus grounds (Ankara, Turkey). From 2003 to 2005, birds were captured a

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29

Stetter, Andrew P. "Nest-site selection, duckling survival, and blood parasite prevalence of lesser scaup nesting at Red Rock Lakes National Wildlife Refuge." Thesis, Kansas State University, 2014. http://hdl.handle.net/2097/18263.

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Master of Science<br>Department of Biology<br>David A. Haukos<br>Abstract–Duckling Survival Lesser scaup (scaup) populations have been experiencing continent-wide decline since the 1980s. It is important to have complete understanding of the critical factors influencing population change (e.g., duckling survival, nesting success, and health) to advance our understanding of population dynamics and improving species conservation. Duckling survival is a primary driver of scaup demography. I conducted a capture-mark-recapture study using Cormack-Jolly-Seber models in Program MARK to compute appar

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30

Furey, Maria A. "Perch availability and vegetation structure in upland breeding habitat selection by reg-winged blackbirds in a floodplain restoration site /." free to MU campus, to others for purchase, 2003. http://wwwlib.umi.com/cr/mo/fullcit?p1418020.

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31

Lyons, James Edward. "Population Ecology and Foraging Behavior of Breeding Birds in Bottomland Hardwood Forests of the Lower Roanoke River." Diss., Virginia Tech, 2001. http://hdl.handle.net/10919/26429.

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Nest survival often is lower at habitat edges than in habitat cores because of greater nest predation and parasitism near edges. I studied nest survival of breeding birds in bottomland hardwood forests of the lower Roanoke River, North Carolina. Nesting success was monitored in two forest width classes: narrow bands of levee forest that were dominated by two edge types, and wide, continuous levee forest stands that have edges but most forest is relatively far from edge. Nest success of Acadian Flycatchers and Prothonotary Warblers was similar in narrow and wide levees; nest success of North

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32

Cassel, Kevin William. "FACTORS INFLUENCING SITE OCCUPANCY OF BREEDING BIRDS, HERPTILES, MESOCARNIVORES, AND SMALL MAMMALS ON SUBURBAN FOREST PRESERVES IN THE CHICAGO METROPOLITAN AREA." OpenSIUC, 2014. https://opensiuc.lib.siu.edu/theses/1563.

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Wildlife in urban settings are a management challenge because wildlife populations and their habitats are often fragmented and degraded, but natural resource managers need information concerning their spatial distribution, spatial turnover, and spatial co-occurrence while accounting for imperfect detection. Based in the Chicago Metropolitan Area during 2009-2012, my study modeled 23 species across 5 wildlife taxa concerning patterns of site occupancy, spatial turnover (i.e., colonization and extinction), and/or spatial co-occurrence at 1-2 spatial scales. In detail, I investigated: (1) detec

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33

Cavalcanti, Luciano Pamplona de Goes. "EficÃcia de peixes larvÃfagos na reduÃÃo de larvas de aedes aegypti em depÃsitos domiciliares com Ãgua." Universidade Federal do CearÃ, 2009. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=6041.

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nÃo hÃ<br>O dengue permanece como problema de saÃde pÃblica no Brasil. No nordeste brasileiro, os grandes depÃsitos domiciliares utilizados para acumular Ãgua sÃo importantes criadouros para reproduÃÃo do Aedes aegypti, o principal transmissor do dengue. O uso de alternativas ao controle quÃmico desse vetor vem sendo incentivado. Os objetivos desse trabalho foram avaliar se a presenÃa de peixes larvÃfagos altera o padrÃo de postura do A. aegypti, identificar a sobrevivÃncia de peixes larvÃfagos ao cloro e descrever a eficÃcia do peixe Betta splendens em condiÃÃes de campo. O padrÃo de postura

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Smith, Richard D. "Snow buntings Plectrophenax nivalis : the behavioural ecology and site use of an itinerant flock species in the non-breeding season." Thesis, University of Glasgow, 1994. http://theses.gla.ac.uk/5739/.

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This thesis examines how extrinsic and intrinsic factors affect dispersal, foraging, aggression and energy reserves in a winter population of a small, migratory flocking bird, the Snow Bunting Plectrophenax nivalis. Previous observations of this species, and consideration of its northern ground-feeding open country niche, suggested that Snow Buntings were less likely to show as strong a degree of site fidelity as many other winter-studied species. This may therefore have led to opportunities for the Snow Bunting's winter behavioural ecology to diverge from that of more sedentary species. The d

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Fotinos, Tonya D. "Genetic Structure of the Florida Key Tree Cactus, Pilosocereus robinii, using Restriction Site associated DNA (RAD) markers." FIU Digital Commons, 2013. http://digitalcommons.fiu.edu/etd/914.

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Rare plant conservation efforts must utilize current genetic methods to ensure the evolutionary potential of populations is preserved. One such effort involves the Key Tree Cactus, Pilosocereus robinii, which is an endangered columnar cactus native to the Florida Keys. The populations have precipitously declined over the past decade because of habitat loss and increasing soil salinity from rising sea levels and storm surge. Next-generation DNA sequencing was used to assess the genetic structure of the populations. Twenty individuals representative of both wild and extirpated cacti were chosen

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Johnson, James Matthew. "Demography and Behavior of Western Sandpipers (Calidris mauri) Breeding on the Yukon-Kuskokwim River Delta, Alaska." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/28903.

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I conducted demographic and behavioral studies of Western Sandpipers (Calidris mauri) breeding on the Yukon-Kuskokwim River Delta, Alaska (1998-2005). In chapter one, I estimated apparent annual survival (product of true survival and site fidelity) while correcting for the probability of encounter for 237 males and 296 females. Overall return rates (individual returned to the site in a subsequent season) were lower for females (40%) than males (65%), as was apparent annual survival (± SE, females = 0.65 ± 0.05, males = 0.78 ± 0.03), and encounter rate (females = 0.51 ± 0.

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37

Toschik, Pamela C. "The role of contaminant exposure and habitat suitability in nest site use and productivity of ospreys (pandion haliaetus) breeding on the Delaware river and bay." College Park, Md. : University of Maryland, 2004. http://hdl.handle.net/1903/1944.

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Thesis (M.S.) -- University of Maryland, College Park, 2004.<br>Thesis research directed by: Dept. of Animal and Avian Sciences. Title from t.p. of PDF. Includes bibliographical references. Published by UMI Dissertation Services, Ann Arbor, Mich. Also available in paper.

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Burke, Dawn M. "The effect of forest fragmentation on food abundance, nest site habitat, and reproductive success of forest-breeding birds, a study in the Peterborough region of Ontario." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1998. http://www.collectionscanada.ca/obj/s4/f2/dsk2/ftp02/NQ30206.pdf.

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39

Dalton, Hope Anne. "Comparative study of the breeding systems of Reticulitermes flavipes and Reticulitermes hageni in a North Carolina Coastal Plain site using microsatellite markers and mtDNA sequence data." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-04272005-145915/.

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The termites (Isoptera) are an important group of eusocial insects whose breeding systems have been relatively poorly studied. In this study, we inferred the breeding systems of two sympatric species of Reticulitermes flavipes (Kollar) and R. hageni Banks by investigating colony and population genetic structure using microsatellite and mitochondrial DNA markers. Termites were collected in natural wood debris along two transects 1 km apart in a forested site in the Coastal Plain of southeastern North Carolina. Collection points within transects were at least 15 m apart (mean = 22.4 m) and each

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Schmechel, Frances A. "Aspects of habitat selection, population dynamics, and breeding biology in the endangered Chatham Island oystercatcher (Haematopus chathamensis)." Lincoln University, 2001. http://hdl.handle.net/10182/1814.

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In the late 1980s the endangered Chatham Island oystercatcher (Haematopus chathamensis) (CIO) was estimated at less than 110 individuals. Endemic to the Chatham Islands, New Zealand, it was feared to be declining and, based on existing productivity estimates, in danger of extinction within 50-70 years. These declines were thought to be caused by numerous changes since the arrival of humans, including the introduction of several terrestrial predators, the establishment of marram grass (Ammophila arenaria) which changes dune profiles, and increased disturbance along the coastline. The New Zealan

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Morinay, Jennifer. "Sources of variability in heterospecific social information use for breeding habitat selection : role of genetics and personality in collared flycatchers." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1229/document.

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Au cours de leur vie, les individus doivent constamment prendre des décisions qui peuvent fortement affecter leur valeur sélective. Pour optimiser leur prise de décisions, ces individus peuvent utiliser des informations soit issues de leurs propres interactions avec l’environnement (informations personnelles), soit issues de l’observation d’autres individus (informations sociales). La propension à utiliser des informations sociales et leur signification dépend certainement de paramètres individuels et environnementaux. Pour comprendre le potentiel évolutif de ce comportement à priori adaptatif

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Askew, Hannah. "Farmers' local ecological knowledge in the biotech age : a multi-sited ethnography of fruit farming in the Okanagan Valley." Thesis, McGill University, 2006. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=99572.

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In this Master of Arts Thesis in Anthropology I examine the controversy in the Okanagan Valley over the introduction of GM seed technologies into local agricultural processes. I explore via a multi-sited ethnography how local fruit farmers in this region view GM seed technologies and their perception of how these technologies will impact their farming practices. I argue that (a) the use of GM seeds as currently regulated in Canada threatens to erode farmers' local knowledge of plant breeding and that (b) this erosion is of consequence not only to local farmers but to society generally because

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Denny, Kirsty Marie. "The diet of moreporks (Ninox novaeseelandiae) in relation to prey availability, and their roost site characteristics and breeding success on Ponui Island, Hauraki Gulf, New Zealand : a thesis presented in fulfilment of the requirements for the degree of Master of Science in Ecology at Massey University, Albany, New Zealand." Massey University, 2009. http://hdl.handle.net/10179/1213.

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The ecological importance of introduced mammalian predators is well acknowledged in New Zealand, however, little research has focused on the ecology of native avian predators and their role in communities. This study investigated the ecology of moreporks (Ninox novaeseelandiae) on Ponui Island, Hauraki Gulf, New Zealand between August 2007 and April 2008. The primary aim was to investigate the functional response of moreporks to availability of their prey. The contents of regurgitated morepork pellets were compared with relative abundance of prey taxa (invertebrates, small birds and rodents) o

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Danchin, Étienne. "Rôle des facteurs comportementaux dans les mécanismes de régulation des populations d'oiseaux coloniaux : cas de la mouette tridactyle (Rissa tridactyla)." Paris 6, 1988. http://www.theses.fr/1988PA066180.

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Pierce, Brian Thomas. "The influence of the environment on the volume growth, stem form and disease tolerance of Eucalyptus grandis clones in the summer rainfall areas of South Africa." Thesis, Stellenbosch : Stellenbosch University, 2000. http://hdl.handle.net/10019.1/51988.

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Thesis (MPhil)--Stellenbosch University, 2000.<br>ENGLISH ABSTRACT: A thesis undertaken to quantify genotype-by-environment interaction within Eucalyptus grandis clones growing in the eastern portion of South Africa. Thirty one sites were selected to represent the "traditional" E. grandis growing areas of South Africa. Eleven common macro- site variables and twelve common micro- site soil variables were recorded at each site. Twenty seven E. grandis clones and four E. grandis hybrid clones were then evaluated over these 31 sites. An incomplete latin square design was used to evaluate the

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Soti, Valérie. "Caractérisation des zones et périodes à risque de la Fièvre de la Vallée du Rift au Sénégal par télédétection et modélisation éco-épidémiologique." Phd thesis, AgroParisTech, 2011. http://pastel.archives-ouvertes.fr/pastel-00727693.

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La Fièvre de la Vallée du Rift (FVR) est une zoonose observée pour la première fois au Kenya en 1930 qui s'est peu à peu propagée à la plupart des pays d'Afrique. La FVR est une maladie à transmission vectorielle dont le virus appartient au genre Phlebovirus de la famille des Bunyaviridæ. En Afrique de l'Est, l'émergence de foyers est prédite par des modèles statistiques, ce qui n'est pas le cas en Afrique de l'Ouest où les facteurs et les mécanismes en jeu sont encore mal définis. L'objectif de cette thèse est d'identifier les facteurs et les processus épidémiologiques expliquant l'émergence

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McKenzie, Jane, and janemckenzie@malpage com. "Population demographics of New Zealand fur seals (Arctocephalus forsteri)." La Trobe University. Zoology Department, School of Life Sciences, 2006. http://www.lib.latrobe.edu.au./thesis/public/adt-LTU20080509.121141.

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Assessment of trophic interactions between increasing populations of New Zealand fur seals (Arctocephalus forsteri) and fisheries in southern Australia is limited due to a lack of species specific demographic data and an understanding of the factors influencing population growth. To establish species specific demographic parameters a cross-sectional sample of New Zealand fur seal females (330) and males (100) were caught and individually-marked on Kangaroo Island, South Australia between 2000 and 2003. The seals were aged through examination of a postcanine tooth, which was removed from each a

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Cheng, Chien-hsun, and 鄭謙遜. "Nest Sites Selection and Breeding Ecology of Terns at Jishan Islet, Penghu Islands, Taiwan." Thesis, 2006. http://ndltd.ncl.edu.tw/handle/66612487582448687208.

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碩士<br>國立中山大學<br>生物科學系研究所<br>94<br>Abstract During summer, May to September, of 2005, I examined nest-site selection and breeding ecology in a mixed-species colony of Roseate Terns (Sterna dougallii), Bridled Terns (Sterna anaethetus) and Black-naped (Sterna sumatrana) Terns on the islet of Jishan, Penghu, Taiwan. The aims are to identify characteristic differences of nest sites within the habitats, and to compare nest-site preferences of early- and late-nesting Roseate Terns. Significant interspecific differrences in nesting sites were found: Roseate Terns nested in areas with short vegetat

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Mokobane, Kobo Frans. "Evaluation of symbiotic N nutrition, C accumulation, P uptake and grain yield of fifteen mungbean genotypes planted at two sites in South African region." 2013. http://encore.tut.ac.za/iii/cpro/DigitalItemViewPage.external?sp=1000727.

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M. Tech. Agriculture<br>Mungbean (Vigna radiata L. Wilczek) is becoming a food security crop in Africa, especially in South Africa where there is a growing Asian population. To promote its production by farmers, 15 elite mungbean varieties were evaluated for plant growth, symbiotic N (nitrogen) nutrition and grain yield at Nelspruit and Kliplaatdrift in Mpumalanga Province, South Africa. Genotypes VC6486-10-S1 and VC6493-44-1 at Nelspruit, and VC6510-151-1, VC1973A and VC3960-88 at Kliplaatdrift showed better growth and fixed significantly more symbiotic N than the other genotypes. They also s

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Mbokazi, Manzane Frans. "Ecology of breeding sites and insecticide resistance of the potential malaria vectors in Mpumalanga Province, South Africa." Thesis, 2015. http://hdl.handle.net/10539/17908.

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