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Journal articles on the topic 'Migratory return'

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1

Corzo Vargas, Stefano Sebastian. "Los abordajes conceptuales a la migración de retorno: una revisión sistemática de los marcos teóricos (1974-2018) y sus implicancias para el caso peruano." Discursos del Sur, revista de teoría crítica en Ciencias Sociales, no. 14 (December 29, 2024): 149–80. https://doi.org/10.15381/dds.n14.28091.

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This article offers an overview of the main theoretical approaches to return migration developed over the past five decades: Bovenkerk (1974), Gmelch (1980), King (2000), Cassarino (2004), Durand (2004), and Batistella (2018). Before exploring the typologies proposed by each author, the article critically examines the multiple definitions of return as a specific moment of the migratory path and highlights key trends in case studies of specific returns over the same chronological period. The article analyzes different conceptual typologies of return, outlining their major contributions and limi
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Moran-Taylor, Michelle J. "Going North, coming South: Guatemalan migratory flows." MIGRATION LETTERS 6, no. 2 (2009): 155–64. http://dx.doi.org/10.33182/ml.v6i2.74.

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Understanding the return aspect of international migration is vital because returnees replete with new ideas, perceptions on life, and monies affect every dimension of social life in migrants’ places of origin. Yet, return migration remains uneven and an understudied aspect of migratory flows because migration scholars have privileged why individuals migrate, the underlying motivations for their moves abroad, and how migrants assimilate and succeed in their destinations abroad. Drawing on ethnographic research, this article addresses the migratory flows of Ladino and Mayan Guatemalans: those w
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3

Moore, Joseph D., and David G. Krementz. "Migratory connectivity of american woodcock using band return data." Journal of Wildlife Management 81, no. 6 (2017): 1063–72. http://dx.doi.org/10.1002/jwmg.21269.

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4

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 tr
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5

Alger, Samantha A., P. Alexander Burnham, Zachary S. Lamas, Alison K. Brody, and Leif L. Richardson. "Home sick: impacts of migratory beekeeping on honey bee (Apis mellifera) pests, pathogens, and colony size." PeerJ 6 (November 2, 2018): e5812. http://dx.doi.org/10.7717/peerj.5812.

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Honey bees are important pollinators of agricultural crops and the dramatic losses of honey bee colonies have risen to a level of international concern. Potential contributors to such losses include pesticide exposure, lack of floral resources and parasites and pathogens. The damaging effects of all of these may be exacerbated by apicultural practices. To meet the pollination demand of US crops, bees are transported to areas of high pollination demand throughout the year. Compared to stationary colonies, risk of parasitism and infectious disease may be greater for migratory bees than those tha
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Szente-Varga, Mónika, and Amadea Bata-Balog. "Return migration from Venezuela to Europe: Back to the Roots?" Estudos Internacionais: revista de relações internacionais da PUC Minas 9, no. 3 (2021): 75–95. http://dx.doi.org/10.5752/p.2317-773x.2021v9n3p75-95.

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The exodus from Venezuela increased in intensity until the Covid-19 pandemic. Arrivals in Europe were significantly lower than in Latin America, but also grew and displayed a shift in composition, including a decreasing percentage of people with European origins. This study investigates migration from Venezuela to Spain, Italy and Hungary, in the 21st century. It begins with a detailed theoretical framework and then examines the particular migratory flows. The analysis covers the major features of these migration moves, including antecedents, reasons and motivations, size, geographical distrib
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Cormier, Renée L., Diana L. Humple, Thomas Gardali, and Nathaniel E. Seavy. "Migratory connectivity of Golden-crowned Sparrows from two wintering regions in California." Animal Migration 3, no. 1 (2016): 48–56. http://dx.doi.org/10.1515/ami-2016-0005.

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AbstractKnowledge of migratory connectivity is critical to understanding the consequences of habitat loss and climate change on migratory species. We used light-level geolocators to determine breeding locations and migratory routes of wintering Golden-crowned Sparrows (Zonotrichia atricapilla) in two regions of California, USA. Eight out of 9 birds tagged at coastal-wintering sites in Marin County went to breeding sites along the Gulf Coast of Alaska, while 7 out of 8 inland-wintering birds in Placer County migrated to interior sites in the Yukon, Northwest Territories, and British Columbia, C
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Jara, Laura, Carlos Ruiz, Raquel Martín-Hernández, et al. "The Effect of Migratory Beekeeping on the Infestation Rate of Parasites in Honey Bee (Apis mellifera) Colonies and on Their Genetic Variability." Microorganisms 9, no. 1 (2020): 22. http://dx.doi.org/10.3390/microorganisms9010022.

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Migratory beekeeping is a widely extended practice aimed at increasing the yield of products and pollination services of honey bee colonies. However, it represents a stress factor, as it facilitates the dissemination of diseases and may compromise the genetic identity of the colonies involved. To analyze the extent of these effects, pathogens infestation rate and genetic composition were monitored in a field experiment comparing stationary and migratory colonies sharing the same environmental conditions but differing in management (stationary vs. migratory) and genetic background. We studied t
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9

Rovetta-Cortés, Ana Irene, Antonio Alejo Jaime, and María José Fernández-Vicente. "“Un país para volver”: análisis narrativo del Plan de retorno a España." Universitas, no. 41 (August 27, 2024): 183–204. http://dx.doi.org/10.17163/uni.n41.2024.07.

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A growing number of governments are introducing initiatives explicitly aimed at stimulating the returnof their emigrants. In Spain, the state launched its first policy for return, the “Plan of Return to Spain”, in 2019. Taking this plan as a case study, the article examines the Spanish policy for return and places it in a broader context, both political and historical, in order to understand the limits and biases of this measure in the face of the diverse profiles of Spanish emigrants. Adopting the narrative policy framework as a theoretical-analytical perspective and content analysis as a met
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10

Coss, Derek A., Kevin E. Omland, and Evangeline M. Rose. "Migratory return rates and breeding fidelity in Eastern Bluebirds (Sialia sialis)." Wilson Journal of Ornithology 131, no. 3 (2019): 598. http://dx.doi.org/10.1676/18-181.

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11

Feng, H. Q., K. M. Wu, Y. X. Ni, D. F. Cheng, and Y. Y. Guo. "Return migration ofHelicoverpa armigera(Lepidoptera: Noctuidae) during autumn in northern China." Bulletin of Entomological Research 95, no. 4 (2005): 361–70. http://dx.doi.org/10.1079/ber2005367.

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AbstractThe autumn migration ofHelicoverpa armigera(Hübner) was observed with radar and two types of light-trap at Langfang, Hebei province, China in 2001 and 2002. The sudden increase in the proportion ofH. armigeramoths in the searchlight trap indicated migration into the area and catches increased 10-fold during the second half of the night due to the landing of migrants before dawn. The moths’ migratory flights took place at up to 2000 m above the ground, and moths flew differentially at times, and heights, when favourable (i.e. northerly) winds occurred. This facilitated the maximum displ
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12

Sandoval, Rebeca, and Víctor Zúñiga. "¿Quiénes están retornando de Estados Unidos a México?" Mexican Studies/Estudios Mexicanos 32, no. 2 (2016): 328–56. http://dx.doi.org/10.1525/mex.2016.32.2.328.

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El artículo presenta una evaluación crítica de la producción académica que aborda la migración de retorno de Estados Unidos a México de 2008 a 2015. Los hallazgos muestran que la investigación se limita a estudiar el retorno de hombres adultos y su inserción en mercados laborales, así como el impacto económico y demográfico regional. Son casi inexistentes los trabajos sobre trayectorias, integración y experiencia migratoria de niños, jóvenes y mujeres, así como aquellos que toman en consideración las dinámicas familiares asociadas al retorno. Prevalecen las investigaciones deductivas de corte
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13

Espindola, Juan, and Mónica Jacobo-Suárez. "The ethics of return migration and education: transnational duties in migratory processes." Journal of Global Ethics 14, no. 1 (2018): 54–70. http://dx.doi.org/10.1080/17449626.2018.1498013.

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14

DREBY, JOANNA, SARAH GALLO, FLORENCIA SILVEIRA, and MELISSA ADAMS-CORRAL. "Nací Allá: Meanings of US Citizenship for Young Children of Return Migrants to Mexico." Harvard Educational Review 90, no. 4 (2020): 573–97. http://dx.doi.org/10.17763/1943-5045-90.4.573.

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In this essay, Joanna Dreby, Sarah Gallo, Florencia Silveira, and Melissa Adams-Corral use a transnational frame to explore the meanings of US citizenship for binational children and its importance to experiences of belonging. Drawing on interviews with children ages six to fourteen living with their Mexican-born parents in rural Puebla, their analysis shows that children view US citizenship as signaling their social location in a historically based migratory system and that the meaning of this social location on children’s daily lives differs given their transnational experiences, specificall
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15

Baru, Florina. "Change starts from within: Migration and processes of social and cultural change. A Romanian case." Social Change Review 20, no. 1 (2022): 127–61. http://dx.doi.org/10.2478/scr-2022-0007.

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Abstract This paper analyzes Romania’s dynamic migratory process with a focus on the return migration from Norway and the sociocultural changes that it might involve for Romanian migrants and their home societies. The focus on Norway as a case study can bring a valuable, accurate, and deep understanding of Romanian immigration. These indicate that Romanians faced many challenges in their migratory journey in Norway, but that for a source country like Romania, return migration could, in the long term, contribute to its social and cultural changes. This research resulted in three key findings. F
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16

Mackay, David W., and C. Ross Doughty. "Migratory salmonids of the Estuary and Firth of Clyde." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 90 (1986): 479–90. http://dx.doi.org/10.1017/s0269727000005170.

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SynopsisThe paper describes the salmon and sea trout stocks of the rivers entering the sea via the Estuary and Firth of the Clyde including the Rivers Clyde, Leven, the Carts, the rivers of the Ayrshire coast and those entering via the sea lochs and from the Mull of Kintyre. Particular attention is paid to the recent return of salmonids to the Rivers Clyde and Cart, which have been denied to migratory species for over a century because of pollution in the upper Clyde Estuary. The changing environmental conditions, which have made the reappearance of migratory salmonids possible, are described
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17

Borthwick, E. K. "Odysseus and the Return of the Swallow." Greece and Rome 35, no. 1 (1988): 14–22. http://dx.doi.org/10.1017/s0017383500028722.

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In an article in CP 80 (1985), 33–34, entitled ‘Odyssey 21.411: the Swallow's Call', Luis A. Losada drew attention to the apparent oddity that the sound of Odysseus' bow-string, as he twanged it after stringing it in the presence of the suitors, is compared to the note of the swallow, since, for the most part, the swallow's twittering cry, in terms of sound quality, is traditionally associated in much of later Greek literature with either barbarian unintelligibility, loquacity, or sometimes lamentation – none of which is at all appropriate here. He suggests instead that a ‘thematic connotation
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18

Stigter, E. "LIVELIHOODS UPON RETURN: Afghan Migratory Strategies - An Assessment of Repatriation and Sustainable Return in Response to the Convention Plus." Refugee Survey Quarterly 25, no. 2 (2006): 109–22. http://dx.doi.org/10.1093/rsq/hdi0129.

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19

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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20

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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21

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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22

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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23

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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24

Peterson, Sean M., Henry M. Streby, Gunnar R. Kramer, Justin A. Lehman, David A. Buehler, and David E. Andersen. "Geolocators on Golden-winged Warblers do not affect migratory ecology." Condor 117, no. 2 (2015): 256–61. https://doi.org/10.5281/zenodo.13410940.

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(Uploaded by Plazi for the Bat Literature Project) The use of light-level geolocators is increasingly common for connecting breeding and nonbreeding sites and identifying migration routes in birds. Until recently, the mass and size of geolocators precluded their use on songbird species weighing ,12 g. Reducing the mass of geolocators, such as by shortening or eliminating the light stalk, may make their deployment on small birds feasible, but may also inhibit their ability to receive light reliably, because small geolocators can be shaded by feathers. Here we report geolocator effects on migrat
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25

Nichols, Rina K., Jessica Steiner, Lance G. Woolaver, Elaine Williams, Amy A. Chabot, and Ken Tuininga. "Conservation initiatives for an endangered migratory passerine: field propagation and release." Oryx 44, no. 2 (2010): 171–77. http://dx.doi.org/10.1017/s0030605309990913.

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AbstractThe term ‘field propagation and release’ refers to the breeding of captive adults in large field enclosures, allowing them to raise their young, and then releasing those young from that location. This technique is currently being implemented in Canada as one of several recovery tools for the endangered eastern loggerhead shrike Lanius ludovicianus migrans. During 2001–2007 a total of 360 shrike fledglings were produced in field propagation enclosures and 301 were released from these enclosures. Annual return rates of birds released since 2004 are 2–6.6%. Seventeen released birds have b
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26

Oklamd, F., J. Erkinaro, K. Moen, et al. "Return migration of Atlantic Salmon in the River Tana: Phases of migratory behaviour." Journal of Fish Biology 59, no. 4 (2001): 862–74. http://dx.doi.org/10.1111/j.1095-8649.2001.tb00157.x.

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Yamamoto, Takashi, Akinori Takahashi, Katsufumi Sato, Nariko Oka, Maki Yamamoto, and Philip N. Trathan. "Individual consistency in migratory behaviour of a pelagic seabird." Behaviour 151, no. 5 (2014): 683–701. http://dx.doi.org/10.1163/1568539x-00003163.

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Many animals migrate between breeding and wintering areas; however, whether each animal behaves consistently in space and time between consecutive years is less well understood. Furthermore, previous breeding state (successful or failed) is often not considered when attempting to understand consistent individual differences in behaviour that are likely to impact upon the subsequent behaviour. Between 2006 and 2010, we used geolocators to track the migratory movements of a pelagic seabird, the streaked shearwater Calonectris leucomelas, with individuals () being followed for two years or more,
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Huisman, Pieter. "From one-sided promotion of individual interests to integrated water management in the Rhine basin." Water Science and Technology 31, no. 8 (1995): 59–66. http://dx.doi.org/10.2166/wst.1995.0263.

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In autumn 1971, water pollution and poison incidents caused death in the Rhine. Aquatic life disappeared. The rulling opinion was: Clean up the waste water and life will return. It proved to be a half-truth. After treatment of waste water some organisms returned, others, particularly the migratory fish, did not. Barrages and weirs have decimated the migratory fish. Waste water gave only the final knock-out for these species. Slowly understanding arose for a harmonization between human interests and the ecosystem. In course of time the Rhine-states replaced the one-sided promotion of individual
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Chatterji, Tuli. "Teaching The Penguin Book of Migration Literature." Radical Teacher 120 (August 18, 2021): 85–87. http://dx.doi.org/10.5195/rt.2021.892.

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The innovative four-point structure—Arrivals, Departures, Generations, and Return—of The Penguin Book of Migration Literature expands the purview established by previous anthologies of immigrant literature by mobilizing a classroom conversation where students’ own lived experiences of migratory crossings combine with the anthology’s narratives to both analyze texts and critique present national and global political climate.
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Vilavedra, Dolores. "Women Who Leave: Uprooting and Return in Galician Literature." Humanities 11, no. 4 (2022): 98. http://dx.doi.org/10.3390/h11040098.

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The article considers the literary treatment of emigration in Galician fiction, through a review of the most recent work in the field. It looks in particular at the role of women (both authors and characters) and relates approaches here to the changes that have arisen as a result of Galician migratory flows over recent decades. It seeks to show how narrative fiction, a genre highly sensitive to social change, has the capacity to identify phenomena still barely visible in statistical accounts, and to act as a space for the re-signification of new individual and collective identities that are cu
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Franco Aguilar, José. "Mujeres mexicanas retornadas: reconfiguraciones en la dinámica familiar / Mexican women migrants returning. Reconfigurations in the family dynamics." Revista Trace, no. 80 (July 30, 2021): 234. http://dx.doi.org/10.22134/trace.80.2021.754.

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El presente artículo analiza los cambios o continuidades generados por mujeres mexicanas retornadas dentro de su dinámica intrafamiliar, derivados de su experiencia migratoria en EE. UU. El objetivo será la construcción de una tipología que discrimine la existencia de transformaciones dentro de dicha dinámica. En concreto, se exploran cuestiones intrínsecas en las familias que dan la pauta para contrastar situaciones. Particularmente, se estudian las siguientes dimensiones de análisis: trabajo doméstico, cuidado de los hijos, pautas de interacción familiar y concepción propia de la posición de
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Wynn, Joe, Oliver Padget, Henrik Mouritsen, Joe Morford, Paris Jaggers, and Tim Guilford. "Magnetic stop signs signal a European songbird’s arrival at the breeding site after migration." Science 375, no. 6579 (2022): 446–49. http://dx.doi.org/10.1126/science.abj4210.

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Although it is known that birds can return to their breeding grounds with exceptional precision, it has remained a mystery how they know when and where to stop migrating. Using nearly a century’s worth of Eurasian reed warbler ( Acrocephalus scirpaceus ) ringing recoveries, we investigated whether fluctuations in Earth’s magnetic field predict variation in the sites to which birds return. Ringing recoveries suggest that magnetic inclination is learned before departure and is subsequently used as a uni-coordinate “stop sign” when relocating the natal or breeding site. However, many locations ha
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Kauffer, Edith. "The Mexico–Guatemala Border During COVID-19: From Open Border to New Assemblage?" Borders in Globalization Review 2, no. 1 (2020): 66–69. http://dx.doi.org/10.18357/bigr21202019890.

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The dynamics at the Mexican–Guatemalan border drastically changed from the beginning of the COVID-19 pandemic. This paper deals with these transformations and tries to evidence a new assemblage that has resulted. The rationale that prevailed until the beginning of 2020 between Mexico and Guatemala was a south-north selective open border derived from migratory controls applied to travelers according to their citizenship and their US or Canadian migratory status. From March until October, 2020 the pandemic gave birth to a new north-south rationale organized around a selective closure: the Guatem
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Deivison, Faustino, Oliveira Leila Maria de Oliveira, and Silvério Valter Roberto. "Racialized xenophobia and the uneven distribution of welcome to foreigners in Brazil." MONDI MIGRANTI, no. 1 (March 2023): 79–99. http://dx.doi.org/10.3280/mm2023-001005.

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How does xenophobia manifest itself in societies whose capitalism was structured through colonialism? To what extent can studies on contemporary manifestations of racism help to understand xenophobia in these societies? In this work, we rely on the Fanonian concept of racialization to investigate the genesis and function of migratory policies in republican Brazil. To this end, we return to important histori-cal landmarks that allow the relationship between capitalism, racism and immigra-tion in Brazil to be highlighted. As a result, we suggest that the migratory policies in the country corresp
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Cousineau, Jean-Michel. "La mobilité interprovinciale de la main-d’oeuvre au Canada : le cas de l’Ontario, de la Nouvelle-Écosse et du Nouveau-Brunswick." Articles 55, no. 4 (2009): 501–15. http://dx.doi.org/10.7202/800848ar.

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This paper studies the migratory flows between Ontario and two Atlantic provinces of Canada, from 1960-61 to 1975-76. Search theory is used as the theoretical framework and leads to predictions as to the influence on interprovincial migratory flows of three economic variables: relative wages, employment opportunities, and unemployment insurance (UI). Proxies for these theoretical variables are used in an ordinary least squares regression based on pooled time series and cross-section data on interprovincial migration in Canada (Family Allowances' data base). The model performs poorly in explain
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Golder, Papiya, and Maitrayae Sadhu. "Global Dynamics of Bird Migration: Trends, Mechanisms and Conservation Challenges." UTTAR PRADESH JOURNAL OF ZOOLOGY 45, no. 20 (2024): 383–92. http://dx.doi.org/10.56557/upjoz/2024/v45i204592.

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Global bird migration is a complex phenomenon influenced by a multitude of factors, including climate change, habitat loss, and human activities. This paper explores the trends in migratory patterns observed over recent decades, highlighting shifts in timing, routes, and species distributions Bird migrations are behavioural occurrences, exemplifying intricate spatiotemporal tactics to optimise living expenses while enhancing fitness. Birds express a range of migratory patterns, from highly predictable obligate migration, to less predictable nomadic and fugitive migrations. Despite significant
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Coppack, Timothy, Simon F. Becker, and Philipp J. J. Becker. "Circadian flight schedules in night-migrating birds caught on migration." Biology Letters 4, no. 6 (2008): 619–22. http://dx.doi.org/10.1098/rsbl.2008.0388.

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Many species of migratory birds migrate in a series of solitary nocturnal flights. Between flights, they stop to rest and refuel for the next segment of their journey. The mechanism controlling this behaviour has long remained elusive. Here, we show that wild-caught migratory redstarts ( Phoenicurus phoenicurus ) are consistent in their flight scheduling. An advanced videographic system enabled us to determine the precise timing of flight activity in redstarts caught at a northern European stopover site during their return trip from Africa. Birds were held captive for three days in the absence
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Komolkin, Andrei V., Pavel Kupriyanov, Andrei Chudin, Julia Bojarinova, Kirill Kavokin, and Nikita Chernetsov. "Theoretically possible spatial accuracy of geomagnetic maps used by migrating animals." Journal of The Royal Society Interface 14, no. 128 (2017): 20161002. http://dx.doi.org/10.1098/rsif.2016.1002.

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Many migrating animals, belonging to different taxa, annually move across the globe and cover hundreds and thousands of kilometres. Many of them are able to show site fidelity, i.e. to return to relatively small migratory targets, from distant areas located beyond the possible range of direct sensory perception. One widely debated possibility of how they do it is the use of a magnetic map, based on the dependence of parameters of the geomagnetic field (total field intensity and inclination) on geographical coordinates. We analysed temporal fluctuations of the geomagnetic field intensity as rec
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Gómez, Jesús, Chantel I. Michelson, David W. Bradley, et al. "Effects of geolocators on reproductive performance and annual return rates of a migratory songbird." Journal of Ornithology 155, no. 1 (2013): 37–44. http://dx.doi.org/10.1007/s10336-013-0984-x.

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Sim, Joshua Dao Wei. "Shaping “Reach Out, Build Up, Send Back”." Social Sciences and Missions 37, no. 1-2 (2024): 85–124. http://dx.doi.org/10.1163/18748945-bja10099.

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Abstract Why did Asian Christian international students return home with a missionary mindset during the Cold War? This study answers the question by investigating Overseas Christian Fellowship (OCF) Australia and its student returnee mission. I show that OCF’s returnee mission was shaped by Australia’s Cold War foreign policy – the Colombo Plan Scheme. The paper argues that the time-limited conditions imposed by the Scheme established a migratory and educational training pattern which influenced OCF’s mission of evangelising overseas students and training its members to return home as Christi
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Montoya Zavala, Erika Cecilia, Martha Cecilia Herrera García, and Anna Ochoa O'Leary. "Foto-voz como Técnica de Investigación en Jóvenes Migrantes de Retorno. Trayectorias migratorias, identidad y educación." Empiria. Revista de metodología de ciencias sociales, no. 45 (January 15, 2020): 15. http://dx.doi.org/10.5944/empiria.45.2020.26303.

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El objetivo de este artículo es describir de manera general la técnica de investigación Foto-voz y valorar si ampliar los alcances de esta técnica, al tema de migración de retorno, nos ayuda a comprender el rol que juegan las trayectorias migratorias, el lenguaje, el estigma y la identidad en las aspiraciones educacionales de los jóvenes de retorno en la Universidad Autónoma de Sinaloa (UAS). Asimismo, es nuestro objetivo presentar los principales hallazgos en las tres categorías de análisis propuestas: las trayectorias migratorias, el estigma- identidad, y las aspiraciones educativas de los j
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Martínez, Rafael Viruela. "The Romanian Migrants in Spain. An Exceptional Migratory Flow." International Review of Social Research 1, no. 1 (2011): 31–59. http://dx.doi.org/10.1515/irsr-2011-0002.

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Abstract The Romanian population is the most important foreign population in Spain. Romanian migrants are characterized by their large number (about 800.000 residents and 268.000 contract workers) and their rapid growth. The economic and labour motivation for migration determines their geographical distribution, with high numbers of Romanian migrants in cities and in areas of agricultural, industrial and tourist industries. However, a high proportion of Romanian migrants also live in small towns and rural areas. Most of them were already illegal migrants when Romania entered the EU and they be
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Potvin, D. A., P. W. Crawford, S. A. MacDougall-Shackleton, and E. A. MacDougall-Shackleton. "Song repertoire size, not territory location, predicts reproductive success and territory tenure in a migratory songbird." Canadian Journal of Zoology 93, no. 8 (2015): 627–33. http://dx.doi.org/10.1139/cjz-2015-0039.

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In territorial animals occupying environments that vary in quality over the landscape, high-quality individuals are predicted to monopolize high-quality territories. Thus, in many cases it may be difficult to disentangle the relative effects of individual quality from those of territory quality on long-term fitness. We used a 9-year field data set from a migratory population of Eastern Song Sparrows (Melospiza melodia melodia (A. Wilson, 1810)) to evaluate the relative contributions of male song quality (as measured by song repertoire size) and territory location to fitness components includin
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Marco-Rius, Francisco, Graciela Sotelo, Pablo Caballero, and Paloma Morán. "Insights for planning an effective stocking program in anadromous brown trout (Salmo trutta)." Canadian Journal of Fisheries and Aquatic Sciences 70, no. 7 (2013): 1092–100. http://dx.doi.org/10.1139/cjfas-2013-0084.

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Brown trout (Salmo trutta) is a salmonid species with a high socio-economic value related with recreational fishing. Because of that, stocking programs have been developed in many populations, although they have focused on resident populations. To explore which factors promote migratory behaviour when implementing stocking actions, 28 brown trout artificial crosses were carried out in a noncommercial hatchery, and the returning success of their offspring was further evaluated. Return rate was examined according to male phenotype (anadromous versus resident), mean egg size, parents’ similarity
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de Lucas, Javier. "Migration, law, democracy: identifiyng where the risk is." SOCIOLOGIA DEL DIRITTO, no. 2 (December 2009): 139–50. http://dx.doi.org/10.3280/sd2009-002009.

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- This paper focuses on migration, law and democracy in order to identify where risk lies. The author concentrates on studying a recent case, the Directive on the Return of so-called illegal immigrants (sans papiers) approved by the European Parliament on 18 June 2008. The usual point of view, that of the dominant discourse, maintains that today's migratory movements constitute one of the structural factors that justify the definition of our societies as the "Risk Society". According to this point of view, the migratory flows entail a risk for social cohesion and even a destabilising potential
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Castro-Santos, Theodore, and Benjamin H. Letcher. "Modeling migratory energetics of Connecticut River American shad (Alosa sapidissima): implications for the conservation of an iteroparous anadromous fish." Canadian Journal of Fisheries and Aquatic Sciences 67, no. 5 (2010): 806–30. http://dx.doi.org/10.1139/f10-026.

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We present a simulation model in which individual adult migrant American shad ( Alosa sapidissima ) ascend the Connecticut River and spawn, and survivors return to the marine environment. Our approach synthesizes bioenergetics, reproductive biology, and behavior to estimate the effects of migratory distance and delays incurred at dams on spawning success and survival. We quantified both the magnitude of effects and the consequences of uncertainty in the estimates of input variables. Behavior, physiology, and energetics strongly affected both the distribution of spawning effort and survival to
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James, Michael C., Ransom A. Myers, and C. Andrea Ottensmeyer. "Behaviour of leatherback sea turtles, Dermochelys coriacea , during the migratory cycle." Proceedings of the Royal Society B: Biological Sciences 272, no. 1572 (2005): 1547–55. http://dx.doi.org/10.1098/rspb.2005.3110.

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Leatherback sea turtles, Dermochelys coriacea , undertake broad oceanic movements. While satellite telemetry has been used to investigate the post-nesting behaviour of female turtles tagged on tropical nesting beaches, long-term behavioural patterns of turtles of different sexes and sizes have not been described. Here we investigate behaviour for 25 subadult and adult male and female turtles satellite-tagged in temperate waters off Nova Scotia, Canada. Although sex and reproductive condition contributed to variation in migratory patterns, the migratory cycle of all turtles included movement be
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Broderick, Annette C., Michael S. Coyne, Wayne J. Fuller, Fiona Glen, and Brendan J. Godley. "Fidelity and over-wintering of sea turtles." Proceedings of the Royal Society B: Biological Sciences 274, no. 1617 (2007): 1533–39. http://dx.doi.org/10.1098/rspb.2007.0211.

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While fidelity to breeding sites is well demonstrated in marine turtles, emerging knowledge of migratory routes and key foraging sites is of limited conservation value unless levels of fidelity can be established. We tracked green ( Chelonia mydas , n =10) and loggerhead ( Caretta caretta , n =10) turtles during their post-nesting migration from the island of Cyprus to their foraging grounds. After intervals of 2–5 years, five of these females were recaptured at the nesting beach and tracked for a second migration. All five used highly similar migratory routes to return to the same foraging an
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González García, Inmaculada. "Immigration In Spain: Migratory Routes, Cooperation With Third Countries and Human Rights in Return Procedures." Paix et Securite Internationales, no. 7 (2019): 201–30. http://dx.doi.org/10.25267/10.25267/paix_secur_int.2019.i7.06.

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González García, nmaculada. "Immigration In Spain: Migratory Routes, Cooperation With Third Countries and Human Rights in Return Procedures." Paix et Securite Internationales, no. 7 (2019): 201–30. http://dx.doi.org/10.25267/paix_secur_int.2019.i7.06.

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