Academic literature on the topic 'Migratory history'
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Journal articles on the topic "Migratory history"
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Kieffer, Will. "Migratory abdominal pain." Journal of Surgical Case Reports 2010, no. 8 (2010): 7. http://dx.doi.org/10.1093/jscr/2010.8.7.
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Abstract A 63 year old woman, presenting as an emergency provides an useful example of the difficulties in diagnosing acute appendicitis when faced with an atypical history. This patient underwent plain radiography, computed tomography, repeat biochemical investigations and finally an exploratory laparotomy before the diagnosis of acute appendicitis was made. The case was confounded by a highly mobile caecal pole which brought the inflamed appendix to lie over the pancreas highlighting the need for vigilance in diagnosing acute appendicitis.
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Kelson, Suzanne J., Michael R. Miller, Tasha Q. Thompson, Sean M. O’Rourke, and Stephanie M. Carlson. "Do genomics and sex predict migration in a partially migratory salmonid fish, Oncorhynchus mykiss?" Canadian Journal of Fisheries and Aquatic Sciences 76, no. 11 (2019): 2080–88. http://dx.doi.org/10.1139/cjfas-2018-0394.
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Partial migration is a common phenomenon wherein populations include migratory and resident individuals. Whether an individual migrates or not has important ecological and management implications, particularly within protected populations. Within partially migratory populations of Oncorhynchus mykiss, migration is highly correlated with a specific genomic region, but it is unclear how well this region predicts migration at the individual level. Here, we relate sex and life history genotype, determined using >400 single nucleotide polymorphisms (SNPs) on the migratory-linked genomic region, to life history expression of marked juvenile O. mykiss from two tributaries to the South Fork Eel River, northern California. Most resident fish were resident genotypes (57% resident, 37% heterozygous, 6% migratory genotype) and male (78%). Most migratory fish were female (62%), but were a mixture of genotypes (30% resident, 45% heterozygous, 25% migratory genotype). Sex was more strongly correlated with life history expression than genotype, but the best-supported model included both. Resident genotypes regularly migrated, highlighting the importance of conserving the full suite of life history and genetic diversity in partially migratory populations.
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MORISHITA, Katsuhiro, and Nagahisa Mita. "Migratory Pathway Estimation Based on Pressure Altitude History." Journal of the Institute of Positioning, Navigation and Timing of Japan 4, no. 1 (2013): 1–10. http://dx.doi.org/10.5266/ipntj.4.1.
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Arai, Takaomi, Akira Goto, and Nobuyuki Miyazaki. "Migratory history of the threespine stickleback Gasterosteus aculeatus." Ichthyological Research 50, no. 1 (2003): 9–14. http://dx.doi.org/10.1007/s102280300001.
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Oka, Shin-ichiro, and Katsunori Tachihara. "Migratory history of the spotted flagtail, Kuhlia marginata." Environmental Biology of Fishes 81, no. 3 (2007): 321–27. http://dx.doi.org/10.1007/s10641-007-9203-z.
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Handerson Joseph. "The haitian migratory system in the guianas: beyond borders." Diálogos 24, no. 2 (2020): 198–258. http://dx.doi.org/10.4025/dialogos.v24i2.54154.
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The Guianas are an important migratory field in the Caribbean migratory system, whereby goods, objects, currencies, and populations circulate for different reasons: geographical, cultural proximity, climatic, geopolitical and socioeconomic factors. From the 1960s and 1970s, Haitian migration increased in the Guianas. Five decades later, after the January 2010 earthquake, the migratory spaces were intensified in the region, Brazil became part of them as a country of residence and transit to reach French Guiana and Suriname. In 2013, the routes were altered. Some migrants started to use the Republic of Guyana to enter Brazil through the border with Roraima, in the Amazon, or to cross the border towards Suriname and French Guiana. This article is divided into two levels. First, it describes the way in which migrants' practices and trajectories intersect national borders in the Guianas. Then, it analyzes the migratory system, documents and papers, and the problems that the different Haitian migratory generations raise in space and time. The ethnographic research is based on the Triple Border Brazil, Colombia and Peru, but also in Suriname, French Guiana and Haiti.
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Klütsch, Cornelya F. C., Micheline Manseau, Vicki Trim, Jean Polfus, and Paul J. Wilson. "The eastern migratory caribou: the role of genetic introgression in ecotype evolution." Royal Society Open Science 3, no. 2 (2016): 150469. http://dx.doi.org/10.1098/rsos.150469.
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Understanding the evolutionary history of contemporary animal groups is essential for conservation and management of endangered species like caribou ( Rangifer tarandus ). In central Canada, the ranges of two caribou subspecies (barren-ground/woodland caribou) and two woodland caribou ecotypes (boreal/eastern migratory) overlap. Our objectives were to reconstruct the evolutionary history of the eastern migratory ecotype and to assess the potential role of introgression in ecotype evolution. STRUCTURE analyses identified five higher order groups (i.e. three boreal caribou populations, eastern migratory ecotype and barren-ground). The evolutionary history of the eastern migratory ecotype was best explained by an early genetic introgression from barren-ground into a woodland caribou lineage during the Late Pleistocene and subsequent divergence of the eastern migratory ecotype during the Holocene. These results are consistent with the retreat of the Laurentide ice sheet and the colonization of the Hudson Bay coastal areas subsequent to the establishment of forest tundra vegetation approximately 7000 years ago. This historical reconstruction of the eastern migratory ecotype further supports its current classification as a conservation unit, specifically a Designatable Unit, under Canada’s Species at Risk Act. These findings have implications for other sub-specific contact zones for caribou and other North American species in conservation unit delineation.
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Wunderle, Joseph M., Richard M. DeGraaf, and John H. Rappole. "Neotropical Migratory Birds: Natural History, Distribution, and Population Change." Journal of Wildlife Management 61, no. 3 (1997): 980. http://dx.doi.org/10.2307/3802212.
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González, Betsabé Román, Eduardo Carrillo Cantú, and Rubén Hernández-León. "Moving to the ‘Homeland’." Mexican Studies/Estudios Mexicanos 32, no. 2 (2016): 252–75. http://dx.doi.org/10.1525/mex.2016.32.2.252.
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A growing number of minors have become part of the return migratory flow from the United States to Mexico. Based on a longitudinal study started in 2012, this article uses life-history narratives to analyze the return experiences of three children who arrived in the state of Morelos, Mexico, between 2010 and 2012. The findings presented here focus on a specific segment of the children’s migratory journey: leaving the United States, crossing the border and arriving in Morelos. The article contributes to the scholarship on children’s narratives of migration, which has been under-emphasized in traditional studies of United States-Mexico migration. Un número creciente de menores de edad forma parte del flujo migratorio de retorno de Estados Unidos a México. Con base en un estudio longitudinal iniciado en el 2012, este artículo hace uso de las historias de vida para analizar las experiencias de retorno de tres niños que llegaron al estado de Morelos, México, entre el 2010 y el 2012. Los resultados que se presentan están centrados en un segmento específico del recorrido migratorio de estos niños: partir de los Estados Unidos, cruzar la frontera y llegar a Morelos. Este artículo contribuye a los estudios migratorios centrados en la narrativa de los niños, la cual ha sido poco valorada en los estudios de migración entre Estados Unidos y México.
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Rolland, Jonathan, Frédéric Jiguet, Knud Andreas Jønsson, Fabien L. Condamine, and Hélène Morlon. "Settling down of seasonal migrants promotes bird diversification." Proceedings of the Royal Society B: Biological Sciences 281, no. 1784 (2014): 20140473. http://dx.doi.org/10.1098/rspb.2014.0473.
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How seasonal migration originated and impacted diversification in birds remains largely unknown. Although migratory behaviour is likely to affect bird diversification, previous studies have not detected any effect. Here, we infer ancestral migratory behaviour and the effect of seasonal migration on speciation and extinction dynamics using a complete bird tree of life. Our analyses infer that sedentary behaviour is ancestral, and that migratory behaviour evolved independently multiple times during the evolutionary history of birds. Speciation of a sedentary species into two sedentary daughter species is more frequent than speciation of a migratory species into two migratory daughter species. However, migratory species often diversify by generating a sedentary daughter species in addition to the ancestral migratory one. This leads to an overall higher migratory speciation rate. Migratory species also experience lower extinction rates. Hence, although migratory species represent a minority (18.5%) of all extant birds, they have a higher net diversification rate than sedentary species. These results suggest that the evolution of seasonal migration in birds has facilitated diversification through the divergence of migratory subpopulations that become sedentary, and illustrate asymmetrical diversification as a mechanism by which diversification rates are decoupled from species richness.
Dissertations / Theses on the topic "Migratory history"
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Ivings, Steven Edward. "Colonial settlement and migratory labour in Karafuto 1905-1941." Thesis, London School of Economics and Political Science (University of London), 2014. http://etheses.lse.ac.uk/1072/.
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Following the Russo-Japanese War Japan acquired its second formal colony, Karafuto (southern Sakhalin), which became thoroughly integrated with mainland Japan, developing into an important supplier of marine products, lumber, paper and pulp, and coal. This sparsely populated colony offered the prospect of large scale settlement and over the course of the Japanese colonial period the population of the Karafuto increased to over 400,000 before the Pacific War. This thesis traces the course of migration to Karafuto and assesses the role of settlement policy, and migratory labour in colonial settlement. Utilizing colonial media, government reports and local documents, as well as the recollections of former settlers, this study argues that the phenomenon of migratory labour acted as an indirect means for establishing a permanent settler community in Karafuto. This study stresses that the colonial government of Karafuto’s efforts towards the establishment of permanent settlements based on agriculture largely failed. Instead, it was industries that involved the utilization of migratory labour which acted as base-industries for economic life in the colony, and helped support Karafuto’s more enduring communities. Indeed, even in the few cases of successfully established government sponsored agricultural communities in Karafuto, seasonal migratory labour and nonagricultural activity were a persistently crucial component of the community’s economic life. A further implication of this study relates to the comprehensive integration of Karafuto with migratory labour markets in northern mainland Japan and Hokkaido. Evidence presented in this study allows us to question the prevalent notions that northern Japan was an isolated, or poorly connected, region. Instead, it is found that the prefectures of Japan’s northeast were actively engaged in northward bound settlement and migratory labour circuits.
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Tibblin, Petter. "Migratory behaviour and adaptive divergence in life-history traits of pike (Esox lucius)." Doctoral thesis, Linnéuniversitetet, Institutionen för biologi och miljö (BOM), 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-42995.
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Population divergence shaped by natural selection is central to evolutionary ecology research and has been in focus since Darwin formulated “The origin of species”. Still, the process of adaptive divergence among sympatric populations is poorly understood. In this thesis I studied patterns of adaptive divergence among subpopulations of pike (Esox lucius) that are sympatric in the Baltic Sea but become short-term allopatric during spawning and initial juvenile growth in freshwater streams. I also examined causes and consequences of phenotypic variation among individuals within subpopulations to evaluate the contribution of natural selection to population divergence. I first investigated homing behaviour and population structures of pike to assess the potential for adaptive divergence among sympatric pike that migrate to spawn in different streams. Mark-recapture data suggested that migrating pike displayed homing behaviour and repeatedly returned to the same stream. Analyses of microsatellite data revealed partial reproductive isolation among subpopulations spawning in different streams. These subpopulations, however, were truly sympatric during the life-stage spent in the Baltic Sea. To address whether short-term allopatry has resulted in adaptive divergence among sympatric subpopulations I combined observational, experimental and molecular approaches. Observational data showed that subpopulations differed in morphological and life-history traits and common-garden experiments suggested that differences were, at least in part, genetically based. Moreover, QST-FST comparisons indicated that genetically based phenotypic differences has been driven by divergent selection, and a reciprocal translocation experiment showed that phenotypic variation represented local adaptations to spawning habitats. Finally, longitudinal and cross-sectional comparisons among individuals revealed associations between phenotypes, performance and fitness components. In conclusion, my thesis illustrates how short-term allopatry due to migratory behaviour can result in adaptive divergence among sympatric subpopulations. These findings advance the understanding of evolutionary processes at the finest spatiotemporal scale and illustrate that local adaptations can arise in environments with high connectivity. The results also emphasise that fine spatial scale population structures must be taken into consideration in management and conservation of biodiversity in the Baltic Sea.
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Noack, Patrick T. "Carotenoid pigments as phenotypic tracers of salmonid life histories : studies on eggs, alevins and juveniles of trout (Salmo trutta L.) and sea lice of Atlantic salmon (Salmo salar L.)." Thesis, University of Aberdeen, 1997. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU483277.
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The use of carotenoid pigments as an archive of feeding behaviour and thus as environmental markers was tested using eggs and juveniles of sea trout and brown trout (Salmo trutta L.) invertebrates from the River Don and ectoparasitic lice (Lepeophtheirus salmonis Kroyer) of Atlantic salmon (Salmo salar L.). Carotenoids were analysed by normal phase high performance liquid chromatography (HPLC) and the resulting peaks examined in multivariate analyses. Analysis of trout eggs of known parentage suggested that the pigment profile of each egg reflects the migratory history of the maternal fish and it is also representative of the entire egg batch. With the same method, eggs of unknown or disputed parentage could be identified as those of sea trout, brown trout or salmon. Diagnostic properties permitting identification were high amounts of astaxanthin in sea trout eggs; while the presence of lutein, zeaxanthin and a greater number of carotenoid peaks were indicative of brown trout eggs. In hatchery experiments it was established that the diagnostic maternal pigment fingerprint is identifiable for some 1300°d post fertilisation. In this time the majority of carotenoids are metabolised to astaxanthin esters and exogenous feeding will have begun. Muscle tissue carotenoids of juvenile trout in the River Don clearly separated 0+ trout from 1+ fish. The former arrange in a single discrete cluster on the basis of pigmentation, suggesting a common diet throughout the river catchment. Older parr show a specialist diet typical to each region but different from fry, indicating a shift in diet acquisition throughout early life stages. Pigment analysis of stream-living invertebrates and one terrestrial invertebrate revealed that all, except the terrestrial ear-wig, Rhabdiopteryx sp., Gammarus sp. and Leuctra sp., provide a homogeneous pigment profile. In contrast, Gammarus sp. was found to be the supplier of the greatest relative amount of astaxanthin, lutein and zeaxanthin. The diagnostic potential of carotenoids in sea lice was explored in samples taken from wild and farm Atlantic salmon fed on an artificial diet. Astaxanthin and canthaxanthin, which are pigments diagnostic of a natural and synthetic diet respectively, were detected. The ratio of canthaxanthin-like pigment to astaxanthin (C:A ratio) was 45:1 in farm lice and 8:1 in wild lice. Carotenoid content therefore could potentially be used as a tracer of origin of sea lice in epidemiological investigations.
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Massen, Nigel. "A migratory perspective on genetic and life-history variation in Atlantic salmon, Salmo salar L." Thesis, University of Southampton, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.416059.
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Eriksson, Torleif. "Migratory behaviour of Baltic salmon (Salmo salar L.) : adaptive significance of annual cycles." Doctoral thesis, Umeå universitet, Ekologi och geovetenskap, 1988. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-100715.
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This thesis evaluates the adaptive significance of annual cycles on the migratory behaviour of Baltic salmon (Salmo salar L.). The studies have included field experiments as well as laboratory studies gf maturity and migratory behaviour patterns of smolts and postsmolts mainly from the Angerman river population. Contrasting to the phenotypical elasticity in life-history traits, Baltic salmon was found to have a rather strict temporal organization of their annual behavioural patterns. Two year old smolted Baltic salmon showed drastic differences in migratory behaviour when compared in tanks containing either fresh or brackish water. Freshwater kept fish showed an annual cycle where downstream displacement in the upper water column was followed by a stationary behaviour, indicating a readaption to a freshwater life. Fish in brackish water behaved as a migratory fish throughout tne study. Baltic salmon also showed differences in maturation patterns in fresh and brackish water. Three summer old males detained in freshwater all matured sexually the following autumn. If transferred to sea and kept in net- pens a low proportion matured, mainly previously matured males. Furthermore there was a size- dependent relationship of sexual rematuration. Many small previously matured males did not migrate, similarly small previolusly matured males were unable to respond to shifts in the environment. With larger size the alternatives of sexual maturation and high growth rate wi more related to the environmental conditions the fish experienced. A hypothesis has been tested assuming that Baltic salmon migration is influenced by an annual time program. According to the hypothesis the migratory distance covered in the Baltic should be a result of a migratory activity sequence rather than a definite goal orientation. Fish detained before release generally showed a shorter distance between release point and area of recapture compared to fish released at normal time of smoltrun. The migratory distance appeared to be inversly related to the period of delay before release. A seasonal difference in migratory propensity was recorded. An instantaneous mortality curve for Baltic salmon during seaward migration and early sea-phase was estimated based on recapture data on sequentially related fish. The weekly mortality rate decreased from an initial mean of 271 during onset of migration, to 3.51 in mean during autumn. The high risk of mortality during the first part of migration indicated that strong selective forces act on a precise seasonal timing of migration.<br><p>Diss. (sammanfattning) Umeå : Umeå universitet, 1988, härtill 5 uppsatser</p><br>digitalisering@umu
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Nadeau, Patrick Sylvain. "Parental contributions to the early life history traits of juvenile sockeye salmon (Oncorhynchus nerka) : the roles of spawner identity and migratory experience." Thesis, University of British Columbia, 2007. http://hdl.handle.net/2429/31781.
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Pacific salmon (Oncorhynchus spp.) undergo arduous upstream migrations In order to spawn. To date, much scientific attention has focused on why certain migrants succeed in reaching their destination while others die trying. Less is known about how 'successful' spawners differ in the quality of the progeny they produce. Using sockeye salmon O. nerka (Walbaum) as a model, two artificial fertilization experiments were conducted to investigate the relationships between individual salmon and their offspring. In the first experiment, I evaluated survival, size, and burst swimming ability in fry of known parentage (spawners from the Weaver Creek population). After four months of exogenous feeding, fry size remained under significant maternal influence. Paternal identity did not affect size but significantly influenced both egg and fry survival. Burst swimming ability was not affected by parentage and only weakly associated with offspring size. In the second experiment, I evaluated an 'energetic trade-off' hypothesis which proposes that because adults migrate with a fixed energy budget while completing sexual maturation, investments to reproductive development may be impaired by an increase in the costs of swimming to reach spawning grounds. This hypothesis was evaluated by subjecting migrants to two different 'migration difficulties' (i.e. current speeds). Fish in the 'fast' treatment expended more energy than those in the 'slow' and also showed signs of greater physiological stress. However, these differences did not appear to influence allocations to reproductive development in terms of sex trait morphology, ovulation timing, and reproductive hormone levels. Likewise, the survival, incubation time, and size of progeny were not related to the treatments experienced by their parents. These traits were nonetheless influenced by parental identity, with significant contributions from both male and female parents. Regression models showed that offspring size and survival were linked to certain aspects of maternal condition at the time of fertilization, including size, stress, and energy levels.<br>Forestry, Faculty of<br>Graduate
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Meath, Brenna A. "Stable Isotopes in the Eye Lenses of Doryteuthis plei: Exploring Natal Origins and Migratory Patterns in the Eastern Gulf of Mexico." Scholar Commons, 2017. http://scholarcommons.usf.edu/etd/7063.
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Stable isotope analysis is an emerging tool to examine trophic pathways and migratory patterns of marine organisms. Squid are widely distributed in coastal and deep water regions of the Gulf of Mexico. Stable isotope ratios of carbon and nitrogen found within cephalopod tissues can provide information on both trophic level and habitat of their food sources. More recently, ontogenetic changes in stable isotope ratios within squid eye lenses have been documented. Concentric layers of crystallin proteins are added to the lens as the squid ages; the center of the lens contains the oldest layer and the youngest layers are on the outermost surface. The crystallin proteins are rich in carbon and nitrogen, providing suitable sources for isotopic analysis of both δ15N and δ13C. Doryteuthis plei is a common inshore squid in coastal waters of the western Atlantic region. This study identifies the geographic movements of D. plei in the eastern Gulf of Mexico using changes in isotope ratios in eye-lens layers. Isotopic analyses suggest that these squid begin their lives in the deep chlorophyll maximum of the outer shelf and move inshore as they age.
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Warren, Jeffrey M. "Breeding Season Ecology and Demography of Lesser Scaup (Aythya affinis) at Red Rock Lakes National Wildlife Refuge." DigitalCommons@USU, 2018. https://digitalcommons.usu.edu/etd/6928.
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It is hypothesized that individuals make reproductive decisions based on current assessments of their physiological condition and environmental conditions. For female lesser scaup (Aythya affinis), breeding occurs after an energetically costly spring migration. Increasing fat reserves (i.e., ‘body condition’) prior to breeding allows a female to produce a larger clutch of eggs, but time spent gaining body condition is costly in terms of time allowed to raise ducklings before freezing conditions in the fall. In Chapter 2 I explored rate of pre-breeding body condition gain in female lesser scaup, and how that rate influenced clutch size. Spring phenology, measured by proxy as water temperature, and water depth strongly influenced the rate at which females increased body condition. Early springs with low water levels led to greater rates of body condition gain in female scaup. The higher the rate of body condition gain, the larger the clutch of eggs females produced. Body condition is also an important determinant of breeding in female ducks; females in poor body condition are more likely to forego breeding. I explored how body condition, wetland conditions, and prior experience influence a female’s decision to breed in Chapter 3. Body condition was a strong determinant of when a female bred, with females in good body condition breeding earlier than females in poorer body condition. Habitat conditions were also important, with drought reducing the proportion of breeding lesser scaup females. In Chapter 4 I examined survival costs of reproduction in female scaup. Nesting exposes females to increased predation risk (a concurrent survival cost), and reduced post-breeding body condition may reduce female survival the subsequent non-breeding season (a serial, or ‘downstream’, survival cost). Female survival during breeding and non-breeding seasons was most correlated with breeding season water level on the study site, but in opposite directions. Breeding season survival increased with increasing water levels, while non-breeding season survival declined. High water levels on the study site increased the availability of presumably high-security nesting habitat, and also increased female reproductive effort. The former increased breeding season survival, while the latter reduced non-breeding season survival.
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Scagnetti, Jean-Charles. "La wilaya hexagonale : l' Algérie et son émigration, une histoire d' identités (1962-1988)." Thesis, Nice, 2014. http://www.theses.fr/2014NICE2013.
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Le présent travail de recherche se propose d’explorer un aspect méconnu de l’histoire des migrations post-coloniales : la politique migratoire de l’Algérie de 1962 à 1988. Pour ce faire, l’ensemble des sources imprimées produites en Algérie durant la période a été consultée afin de saisir non seulement les grandes articulations de cette politique mais également la perception et les représentations que l’État, ses relais et citoyens pouvaient nourrir à l’endroit des Algériens ayant quitté leur pays d’origine mais conservant des liens étroits avec ce dernier. Après avoir retracé les contours précis - qualitatifs et quantitatifs - de l’émigration algérienne dans un contexte juridique, diplomatique et territorial, ce travail s’intéresse aux structures assurant le lien entre pays de départ et d’accueil, autour des notions essentielles d’intégration et d’identité, qui façonnent les mentalités tant dans l’exil que dans le pays de départ<br>The study focuses on an neglected field of research in the history of post-colonial migrations : Algerian emigration policy during the period from 1962 to 1988. To this end, all material published in Algeria during this period was consulted with the aim of ascertaining, not only the essential structure of this policy, but also the attitude of the State, its citizens and representatives towards the Algerians who had left - but maintained close ties with - their country of origin. Having identified the nature of Algerian émigration within a legal, diplomatic and territorial context, this study aims to define the structures that maintain the link with the mother country, encompassing the essential notions of integration and identity, that shape attitudes, both in exile ans in the country of origin
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Schnakenbourg, Christian. "L'immigration indienne en Guadeloupe (1848-1923) : histoire d'un flux migratoire." Aix-Marseille 1, 2005. http://www.theses.fr/2005AIX10012.
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Plus de 500. 000 Indiens ont émigré vers la Caraïbe au XIXe siècle pour travailler sur les plantations sucrières. Parmi eux, 43. 000 sont arrivés en Guadeloupe. Les deux tiers provenaient du pays tamoul par Pondichéry et les autres de la plaine du Gange par Calcutta. Le voyage durait trois mois. Pendant leur séjour dans l'île, les indiens étaient durement traités : mal nourris, mal soignés, soumis à un travail excessif, peu et mal payés, souvent brutalisés, mal protégés par l'administration et la justice coloniales. Ils réagissaient par la résistance passive ou la fuite, et parfois par l'incendie. Un quart seulement d'entre eux ont été rapatriés, les autres sont entrés dans un processus de créolisation qui s'est étendu sur deux ou trois générations jusqu'en 1923, date de l'accès à la nationalité française pour leurs enfants.
Books on the topic "Migratory history"
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DeGraaf, Richard M. Neotropical migratory birds: Natural history, distribution, and population change. Comstock Publishing Associates, 1995.
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Kolb, Raimund Theodor. Die ostasiatische Wanderheuschrecke und ihre Bekämpfung unter besonderer Berücksichtigung der Ming- und Qing-Zeit (1368-1911). Edition Forum, 1996.
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O'Dowd, Anne. Spalpeens and tattie hokers: History and folklore of the Irish migratory agricultural worker in Ireland and Britain. Irish Academic Press, 1991.
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International Workshop on the Health Impact of Large Post-Conflict Migratory Movements, the Mozambique Experience (1996 Maputo, Mozambique). Health Impact of large post-conflict migratory movements: The experience of Mozambique : Maputo, 20-22 March 1996, international workshop organized by International Organization for Migration in collaboration with Ministry of Health, Mozambique. International Organization for Migration, 1996.
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Carchedi, Francesco. L'emigrazione dalla Calabria: Percorsi migratori, consistenze numeriche ed effetti sociali. Tau editrice, 2014.
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Abuja/Londra solo andata: Storie e percorsi migratori dalla Nigeria. Liguori, 2010.
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L'enjeu migratoire en Guyane française: Une géographie politique. Ibis Rouge Éditions, 2009.
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Arcella, Vittorio Raffaele. I migranti tra eroismo e utopia: I flussi migratori visti da Sud. Edizioni Agemina, 2013.
Find full textBook chapters on the topic "Migratory history"
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Docker, Margaret F., and Ian C. Potter. "Life History Evolution in Lampreys: Alternative Migratory and Feeding Types." In Lampreys: Biology, Conservation and Control. Springer Netherlands, 2019. http://dx.doi.org/10.1007/978-94-024-1684-8_4.
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Ramesar, Raj, Alison September, George Rebello, Jacquie Greenberg, and Rene Goliath. "Migratory History of Populations and its Use in Determining Research Direction for Retinal Degenerative Disorders." In New Insights Into Retinal Degenerative Diseases. Springer US, 2001. http://dx.doi.org/10.1007/978-1-4615-1355-1_36.
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Akoka, Karen, Olivier Clochard, Iris Polyzou, and Camille Schmoll. "What’s in a Street? Exploring Suspended Cosmopolitanism in Trikoupi, Nicosia." In IMISCOE Research Series. Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-67365-9_8.
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AbstractSituated at the eastern part of the Mediterranean Sea, the island of Cyprus has always been a bridge as well as a border between the Middle East and Europe. It has also been an important place of both emigration and immigration. The situation in Nicosia, the capital city, is marked by decline following the 1974 conflict and partition. At the same time, however, the city has become an important settling place for international migrants, whose presence has grown during the last 20 years. Today Nicosia’s situation lies between a typical south European city (in which migrants find room in the interstices) and a post-war city. Following the growing effort within migration studies to use the street as a laboratory of diversity and cosmopolitanism (Susan Hall), this paper focuses on a single street. Formerly an important business street, Trikoupi Street is now well known as one of the most cosmopolitan streets in Nicosia, in which south Asians, Arabs, Sub-Saharan Africans as well as Eastern Europeans converge. These different populations correspond to different migratory waves as well as different modes of incorporation into local society. In this chapter, we aim to see how the street level may help us to reflect upon important topics in Cyprus such as contested citizenship, urban change, local/global connections, as well as new forms of cohabitation and patterns of subaltern cosmopolitanism. We also aim to reflect upon the multiple temporalities of the neighborhood, in order to show how the history of the street (and the history of the neighborhood) impacts on current ways of life in Trikoupi. We define the current situation as “suspended cosmopolitanism.”
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"Daydreaming Before History: The Last Works of Sigmund Freud and Charlotte Salomon." In Essays in Migratory Aesthetics. Brill | Rodopi, 2007. http://dx.doi.org/10.1163/9789401204675_015.
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"2 Migration and language ecology: pre-history to Cromwell." In Linguistic Communities and Migratory Processes. De Gruyter Mouton, 2020. http://dx.doi.org/10.1515/9783110614190-002.
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Barnes, Leslie. "Un cinéma sans image: Palimpsestic Memory and the Lost History of Cambodian Film." In Post-Migratory Cultures in Postcolonial France. Liverpool University Press, 2018. http://dx.doi.org/10.3828/liverpool/9781786941138.003.0005.
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Davy Chou’s Le Sommeil d’or (2011) is the first attempt to recount the forgotten history of the Cambodian film industry, a rich and storied archive that all but disappeared with the Khmer Rouge victory in 1975. To make the film, Chou returned to a homeland that is not fully his to capture the memories of a handful of people with whom he shares neither language nor experience. The result, I will suggest, is a work of palimpsestic memory that layers space and time in an attempt to conjure the traces of this lost cultural heritage. Notably however, Chou uses almost none of the surviving footage from the period in his film. This decision, perhaps unusual given the filmmaker’s objective to make the past visible, encourages us to interrogate the ubiquity of the image in relation to the work of memory. Further, having never ‘left’ the homeland on which he now trains his camera, Chou crafts a film that simultaneously privileges and problematizes the idea of return, offering a post-migratory imagining of the second generation’s relationship to the notions of place and belonging, culture and heritage.
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"Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques." In Community Ecology of Stream Fishes: Concepts, Approaches, and Techniques, edited by Alexander S. Flecker, Peter B. McIntyre, Jonathan W. Moore, Jill T. Anderson, Brad W. Taylor, and Robert O. Hall. American Fisheries Society, 2010. http://dx.doi.org/10.47886/9781934874141.ch28.
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<em>Abstract</em>.—Migratory fishes are common in freshwaters throughout the world and can fundamentally alter recipient ecosystems. We describe different types of fish migrations and consider their importance from the perspective of ecosystem subsidies—that is, landscape-scale flows of energy, materials, and organisms that are important in driving local food web and ecosystem dynamics. We distinguish between two general categories of subsidies, which we term here material subsidies and process subsidies. Material subsidies are the transfer of energy, nutrients, and other resources resulting in direct changes in resource pools within ecosystems. We posit that material subsidies occur under only a subset of life history strategies and ecological settings, and the potential for migratory fish to represent major material subsidies is greatest when (1) the biomass of migrants is high relative to recipient ecosystem size, (2) the availability of nutrients and energy is low in the recipient ecosystem (i.e., oligotrophic), and (3) there are effective mechanisms for both liberating nutrients and energy from migratory fishes and retaining those materials within the food web of the recipient ecosystem. Thus, anadromous semelparous Pacific salmon <em>Oncorhynchus </em>spp. with en masse programmed senescence in oligotrophic Pacific Northwest streams can be large material subsidies. In contrast, process subsidies arise from feeding or other activities of migratory species that directly affect process rates within recipient ecosystems. For example, the physical and chemical effects of grazing and sediment-feeding fishes such as prochilodontids, as well as seed dispersal by large-bodied frugivorous characins, represent potentially key process subsidies by migratory fishes in some of the great rivers of South America. We speculate that process subsidies are more widespread than material subsidies from migratory stream fishes because they are independent of the type of migration patterns, life history, and distance traveled. Nevertheless, the magnitude of process subsidies is likely to be greatest under a specific subset of ecological conditions, which can differ from those where material subsidies might be most important. In addition to migrant biomass, the potential for migratory fish to represent strong process subsidies is regulated by migrant interaction strength and the degree to which a migratory species is functionally unique in a particular ecological setting. Unlike material subsidies, which require high migrant biomass as conveyor belts of materials, migratory fishes can be crucial process subsidies, even when migrant biomass is low, if they are functionally unique and strong interactors. We provide specific examples of these different types of subsidies and outline key directions of research for furthering our understanding of the functional significance of migratory stream fishes. Our aim is to highlight the diversity of subsidies provided by migratory fishes in order to foster a more comprehensive perspective on fishes as essential components of riverine ecosystems.
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Melegh, Attila. "Towards a Transnational and Global History of Demographic and Migratory Processes and Discourses." In The Practice of Global History. Bloomsbury Academic, 2019. http://dx.doi.org/10.5040/9781474292184.ch-007.
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"Returnees, Forgotten Foreigners and New Immigrants: Tracing Migratory Movement into Ireland Since the Late Nineteenth Century." In Transnational Perspectives on Modern Irish History. Routledge, 2014. http://dx.doi.org/10.4324/9781315867274-17.
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Richards, Eric. "The migration mystery." In The genesis of international mass migration. Manchester University Press, 2018. http://dx.doi.org/10.7228/manchester/9781526131485.003.0001.
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Historians have resorted to a language of mystery and metaphor when they come to grapple with the great structural changes which underpin the array of contributory causes of migration. The British Isles was the prototype case of agrarian transformation associated with industrial growth and mass migration. Frank Thistlethwaite in the early 1960s re-shaped the subject by insisting on linking the two sides of the Atlantic into a connected explanation of the migratory turmoil. There were links along the chain of causation towards the migration of millions of the British people in their confusing permutations. Migration history comes in three main schematic forms: first the individual account, second the general narrative of migratory behaviour, and third the grand theories of migration. International emigration has depended on the basic facilities of migration. The British case was the prototype of modern rural-urban migration and has been replicated, with important variations, across the world.
Conference papers on the topic "Migratory history"
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Kumar, Rajeev Ranjan, Sanjoy Kumar Mukherjee, S. K. Biswal, et al. "Field Scale Geo-Mechanical Analysis To Identify Fracture Sweet Spots Within Deccan Trap, Western Onshore, India." In Offshore Technology Conference. OTC, 2021. http://dx.doi.org/10.4043/31206-ms.
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Abstract Hydrocarbon exploration continues to venture into new avenues. This paper elaborates the 3D geomechanical study carried out to identify sweet spots in Deccan Trap Basalts in depth ranging from 500m-1100m in Cambay basin field of India. The main challenge is wide variation in the rock mechanical properties and stress profiles along various azimuths resulting from different tectonic incidents over the geological ages. Several drilling complications and held ups during electro logging in highly deviated wells are also reported. The normal fault tectonic framework has the imprint of two sets of faults viz., NNW-SSE and ENE-WSW. Deccan Trap acts as reservoirs due to the presence of connected open fracture network and to assess the potential reserves a comprehensive 3D Critically stressed fracture analysis has been performed using 3D numerical simulation-based rock properties, in-situ stress and seismic data. Open hole geophysical logs like sonic dipole and borehole images have been used to estimate rock mechanical properties and stress profiles in 18 key wells. Available core data of Basalt in the area have been used for dynamic to static rock properties estimation along with available published literature data. Critically stressed fracture analysis using 1D MEM outputs and dips dataset has been performed at well scale to history match production logging and testing results of 23 wells located in different fault blocks. 3D stress model has been built using plasticity model while taking into account faults and fracture sets. Utilizing 3D Geomechanical properties and Discrete fracture network model, critically stressed fracture sets have been identified across the field with slip tolerance and effective drawdown pressures. The study suggests that structurally high locations are good producers if seals are present above Trap. Sub-horizontal fractures have a higher closing tendency with decline in pressure in layers with SHmax&gt;SHmin&gt;Sv inside stiff Trap layer. There is variation of slip tolerance in the range of 0.2-1.4 in fracture sets which indicates slip tendency to be varying both vertically and laterally. Faults with ENE-WSW strike seem to be fluid migratory conduits and their intersection with NNW-SSE discontinuities are the areas where fracture sets have a higher slip tendency. Most of the producing layers are within 25m-55m of Trap with water being encountered at deeper depth intervals. These are mostly weathered fractured layers within the trap. The stress map suggests rotation of the maximum horizontal stress azimuth from NW to E which also affects fracture intensity in the field. Few fracture sets have tendency to be slip prone even with depletion up to 300psi-800psi while others will require stimulation or acid clean up job. Eight exploration wells drilled based on the study have shown good flow rate on initial well testing in the area providing validation to the study.
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Borisova, Anna, and Lorena Amorós Blasco. "Un álbum de recuerdos prestados: La fotografía de Google Street View como vestigio de pertenencia en la experiencia del desplazamiento migratorio." In I Congreso Internacional sobre Fotografia: Nuevas propuestas en Investigacion y Docencia de la Fotografia. Universitat Politècnica València, 2017. http://dx.doi.org/10.4995/cifo17.2017.6716.
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En 2007 Google lanzó el proyecto Google Street View que consistió en crear un archivo visual de todas las vías transitables del planeta. Aunque su finalidad es proporcionar la información de orientación en el espacio a los usuarios de Google Maps, este archivo fotográfico tiene muchas más utilidades potenciales. Así, artistas como Jon Rafman, Paolo Cirio o Joachim Schmid se han interesado por esta plataforma informática como fuente de la inspiración creativa. Además, dado que este software nos permite pasear por cualquier parte del mundo que ha sido registrada por los automóviles Google, para un inmigrante representa la posibilidad de realizar un viaje virtual a su tierra. Es importante mencionar que el territorio constituye parte del contexto en que se desarrolla la subjetividad del individuo, ofreciéndole un referente de identificación simbólica (Valera, 1997; Zapiain Aizpuru, 2011). A su vez, el paisaje es la percepción personal del territorio que depende de las experiencias vinculadas al mismo (Giménez, 2001; Montejano y Sierra, 2014). El cambio del país de residencia no sólo expone al inmigrante a una cultura diferente, también lo priva del contacto con los lugares que guardan recuerdos de los acontecimientos de su pasado. Esta relación íntima entre la memoria, la identidad y el paisaje, dota a las imágenes que retratan estos espacios significativos de una carga emocional muy potente, y permite al inmigrante contar su historia a partir de los escenarios de su actuación pasada. De modo que crear un relato visual compuesto por las fotografías de Google Street View, reinventando así la idea del álbum familiar, permite reconstruir la narrativa subjetiva a partir de estas imágenes vinculadas al espacio y a una persona en concreto. Por tanto, nuestra hipótesis tratará de demostrar cómo la plataforma Google Street View puede servir como herramienta para la mediación artística con el colectivo inmigrante. Para ello, primeramente haremos un breve recorrido por los estudios desarrollados en distintos ámbitos que darán fundamento a nuestra tesis. Seguidamente, esbozaremos una propuesta de taller, cuya metodología se basará en las premisas marcadas en el estudio de Moreno (2010) sobre la mediación artística para la intervención social. Los participantes realizarán un viaje virtual a su tierra natal y crearán un álbum de recuerdos “prestados”, apropiándose de algunas imágenes mediante captura de pantalla y, así, poder rememorar su lugar de origen a través del paisaje fotográfico. Se trata de una tentativa de restablecer la continuidad del relato personal, interrumpido por la experiencia del desplazamiento. El momento clave de la experiencia sería la presentación de los resultados individuales ante el grupo, acompañando el relato visual con una narración de las vivencias personales vinculadas a los lugares registrados. Este intercambio permitirá compartir el duelo del desarraigo y sentir el reconocimiento y la aceptación por parte de los compañeros. Así, la persona desplazada tendría la oportunidad de reestructurar su narrativa subjetiva y construir nuevos lazos afectivos con el entorno de acogida. De esta manera, en esta investigación definiremos el planteamiento general de la propuesta de taller.
Reports on the topic "Migratory history"
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Bahar, Dany, Ana María Ibáñez, and Sandra Rozo. Give Me Your Tired and Your Poor: Impact of a Large-Scale Amnesty Program for Undocumented Refugees. Inter-American Development Bank, 2020. http://dx.doi.org/10.18235/0002893.
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Between 2014 and 2020 over 1.8 million refugees fled from Venezuela to Colombia as a result of a humanitarian crisis, many of them without a regular migratory status. We study the short- to medium-term labor market impacts in Colombia of the Permiso Temporal de Permanencia program, the largest migratory amnesty program offered to undocumented migrants in a developing country in modern history. The program granted regular migratory status and work permits to nearly half a million undocumented Venezuelan migrants in Colombia in August 2018. To identify the effects of the program, we match confidential administrative data on the location of undocumented migrants with department-monthly data from household surveys and compare labor outcomes in departments that were granted different average time windows to register for the amnesty online, before and after the program roll-out. We are only able to distinguish negative albeit negligible effects of the program on the formal employment of Colombian workers. These effects are predominantly concentrated in highly educated and in female workers.
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Dorr, Brian S., Kristi L. Sullivan, Paul D. Curtis, Richard B. Chipman, and Russell D. McCullough. Double-crested Cormorants. U.S. Department of Agriculture, Animal and Plant Health Inspection Service, 2016. http://dx.doi.org/10.32747/2016.7207735.ws.
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The history of conflict between double-crested cormorants and human interest in fisheries is long and convoluted. Overall, double-crested cormorants are not major consumers of commercial and sportfish species. However, exceptions have been recorded at specific sites with documented impacts on local fisheries. Double-crested cormorants can have a significant impact on vegetation at breeding sites through normal nesting activities. Their guano is acidic and can change soil chemistry, killing ground vegetation and irreversibly damaging nest trees. Humans should avoid direct contact with excrement from wildlife, including droppings from cormorants. The U.S. Fish and Wildlife Service (USFWS) has the primary responsibility and authority for managing migratory bird populations in the U.S. This publication will focus on the double-crested cormorant, which is the most numerous and widely dispersed of the species.