Academic literature on the topic 'Migratory pattern'
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Journal articles on the topic "Migratory pattern"
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Trierweiler, Christiane, Raymond H. G. Klaassen, Rudi H. Drent, et al. "Migratory connectivity and population-specific migration routes in a long-distance migratory bird." Proceedings of the Royal Society B: Biological Sciences 281, no. 1778 (2014): 20132897. http://dx.doi.org/10.1098/rspb.2013.2897.
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Knowledge about migratory connectivity, the degree to which individuals from the same breeding site migrate to the same wintering site, is essential to understand processes affecting populations of migrants throughout the annual cycle. Here, we study the migration system of a long-distance migratory bird, the Montagu's harrier Circus pygargus , by tracking individuals from different breeding populations throughout northern Europe. We identified three main migration routes towards wintering areas in sub-Saharan Africa. Wintering areas and migration routes of different breeding populations overlapped, a pattern best described by ‘weak (diffuse) connectivity’. Migratory performance, i.e. timing, duration, distance and speed of migration, was surprisingly similar for the three routes despite differences in habitat characteristics. This study provides, to our knowledge, a first comprehensive overview of the migration system of a Palaearctic-African long-distance migrant. We emphasize the importance of spatial scale (e.g. distances between breeding populations) in defining patterns of connectivity and suggest that knowledge about fundamental aspects determining distribution patterns, such as the among-individual variation in mean migration directions, is required to ultimately understand migratory connectivity. Furthermore, we stress that for conservation purposes it is pivotal to consider wintering areas as well as migration routes and in particular stopover sites.
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Marques, Paulo A. M., and Paulo E. Jorge. "Winter Latitudinal Population Age-Structure of a Migratory Seagull (Larus fuscus) Differs between Its Two Major Migratory Flyways." International Journal of Ecology 2013 (2013): 1–7. http://dx.doi.org/10.1155/2013/737616.
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The migration is energy-demanding and is expected to greatly affect the distribution of individuals over the species range and condition the choice of migratory routes. We investigated the wintering distributions and migratory flyways use of geographically contiguous populations of Lesser Black-backed Gulls (Larus fuscus) and difference in population winter age structure between migratory flyways. Recoveries of metal ringed pulli from Denmark, Sweden, and Finland were used. The results showed that contiguous populations can have distinct wintering distribution patterns and migratory flyways. More importantly, we found that depending on the place of origin, the population winter distribution may or may not show a latitudinal cline in the age structure. The population migrating via the eastern Atlantic flyway (western flyway) showed a winter age-related latitudinal cline, with adults staying at more northern latitudes than immatures. In contrast, no such pattern was found in the population migrating along the Mediterranean/Black sea flyway (eastern flyway). Interestingly, immatures within the eastern population showed a more dispersed pattern of migratory bearings. Overall, our results enhance the importance of the migration flyway in shaping the age structure of populations in the winter quarters and how it may influence the effect of other factors like sexual maturation.
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Busse, Przemysław. "An Analysis of Orientation Cage Field Data – A Case Study of Headings of the Blackcap, Sylvia atricapilla, at the Bukowo/Kopań Ringing Site in Poland." Ring 42, no. 1 (2020): 51–74. http://dx.doi.org/10.2478/ring-2020-0004.
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Abstract One of the most effective methods of studying the migratory patterns of nocturnal passerine migrants is the use of orientation cages as a supplementary procedure at ringing sites. The most comprehensive studies using orientation cages (Busse’s Flat Orientation Cage) were conducted within the SEEN network (SE European Bird Migration Network), with more than 43,000 tests performed at more than 40 ringing sites in autumn. A number of papers were published based on these data, presenting an overall pattern of passerine migration over SE Europe-Middle East-NE Africa. For more detailed analyses, it was first necessary to solve some methodical problems within case studies. The current work presents details for discussion based on data from 1338 tests of Blackcaps performed during the years 1995–2010 at a single ringing station, Bukowo/Kopań, located on the Polish Baltic coast. The birds were tested according to the standard methodology of the SEEN network (Busse 2000). The problems investigated were (1) the repeatability of heading patterns obtained in different years, (2) the linearity of the estimated arrival and departure headings, and (3) quantitative aspects of the results in the description of the heading pattern when migratory groups are found. It was determined that (1) yearly heading patterns were generally coherent and could be analysed as uniform case data; (2-1) the hypothesis that the arrival/departure heading axes are generally linear is accurate to within about one 10° sector, at least in the case of the Blackcap. This is coherent with impressions from other known data sets, but does not mean that the rule always applies to all species at every location on the migration route. In the future, this problem should be studied on a more detailed scale. It was further established that (2-2) estimating arrival and departure headings makes it possible to define migratory groups (populations) passing the study site. The direct heading estimation procedure seems to be more sensitive in identifying migratory groups than the calculation procedure. Moreover, (3-1) the calculation procedure makes it possible to estimate some quantitative properties of headings of migratory groups and define some interesting, though preliminary, number patterns of local migratory patterns; (3-2) the number relations between birds demonstrating the arrival and departure headings of the migratory group seem to be an interesting parameter for study on the distance of migration of groups within a species and, possibly, between species. This is another interesting problem that cage tests could be used to solve in the future. Finally, (3-3) knowledge about trends of individual populations passing the defined site becomes accessible only using analysis of data from orientation cages. The estimated quantitative indices discussed above could be helpful in presenting the general migratory pattern of the species on a geographical scale.
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De Wysiecki, Agustín María, Noela Sánchez-Carnero, Alejo Joaquín Irigoyen, et al. "Using temporally explicit habitat suitability models to infer the migratory pattern of a large mobile shark." Canadian Journal of Fisheries and Aquatic Sciences 77, no. 9 (2020): 1529–39. http://dx.doi.org/10.1139/cjfas-2020-0036.
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Conservation and management measures for large mobile sharks are more effective when information on migratory patterns and environmental cues are known. In the absence of long-term monitoring data or tracking programs, available information is based on occasional catch or sighting records from a variety of sources, usually constrained in space and time. This study demonstrates the utility of developing temporally explicit habitat suitability (HS) models to infer the migratory pattern of large mobile sharks. Bimonthly presence-only HS models (MaxEnt algorithm) were developed for the broadnose sevengill shark (Notorynchus cepedianus) in the southwest Atlantic based on an exhaustive collection of data records and ecologically relevant predictors. The six final models showed good predictive power and were evaluated with independent data. A migratory pattern characterized by two main displacements was inferred from the models. We show that HS models can be applied as a no-cost, desk-based alternative to infer broadscale movements of large mobile sharks. This methodology is relevant as an important first step toward informing management plans in data-poor and financially limited regions or regions under urgent conservation need.
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Wu, Chufen, Dongmei Xiao, and Xiao-Qiang Zhao. "Asymptotic pattern of a migratory and nonmonotone population model." Discrete & Continuous Dynamical Systems - B 19, no. 4 (2014): 1171–95. http://dx.doi.org/10.3934/dcdsb.2014.19.1171.
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Begemann, I., T. Saha, L. Lamparter, et al. "Mechanochemical self-organization determines search pattern in migratory cells." Nature Physics 15, no. 8 (2019): 848–57. http://dx.doi.org/10.1038/s41567-019-0505-9.
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Soni, A. H., J. A. Sullivan, W. A. Herndon, and M. R. Gudavalli. "Migratory pattern of vertebral motion in the lumbar spine." Journal of Biomechanics 19, no. 6 (1986): 468. http://dx.doi.org/10.1016/0021-9290(86)90033-3.
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Mbaka, Godwin, Adedayo Ejiwunmi, Olusegun Alabi, and Timothy Olatayo. "Digital dermatoglyphic variation and migratory pattern of ethnic Liberians." Egyptian Journal of Forensic Sciences 6, no. 4 (2016): 416–21. http://dx.doi.org/10.1016/j.ejfs.2016.06.005.
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Chabot, Amy A., and Stephen C. Lougheed. "Integrative assessment of intraspecific diversification in Loggerhead Shrike (Lanius ludovicianus) provides insight on the geographic pattern of phenotypic divergence and process of speciation." Canadian Journal of Zoology 99, no. 6 (2021): 497–510. http://dx.doi.org/10.1139/cjz-2020-0006.
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Integrated studies of the geographical, ecological, and historical factors that shape intraspecific phenotypic and genetic variation can help us to decipher the processes leading to geographic patterns of population divergence and speciation. We quantify and compare morphological and genetic variation in the Loggerhead Shrike (Lanius ludovicianus Linnaeus, 1766), a broadly distributed passerine in North America with both migratory and non-migratory populations that occupy a diversity of habitats and topographies. The geographic distributions and patterns of differentiation among subspecies suggest that migration has strongly impacted population divergence, including the habit of migrating itself, but also dispersal. Patterns of mitochondrial and nuclear genetic differentiation can be attributed to female-biased dispersal and to increased dispersal rates and distances in migratory populations. Weak phenotypic differentiation among migratory versus migratory and non-migratory populations suggest that migration may more strongly affect morphology than adaptation to local habitats. Our results generally support previous subspecific designations with two notable exceptions. We found little genetic differentiation between two subspecies (Lanius ludovicianus gambeli Ridgway, 1887 and Lanius ludovicianus mexicanus C.L. Brehm, 1854), but identify a new, distinct subspecies, which we refer to as Lanius ludovicianus centralis ssp. nov.
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Juliano, Joseph, Orlando Gil, Andrea Hawkins-Daarud, et al. "Comparative dynamics of microglial and glioma cell motility at the infiltrative margin of brain tumours." Journal of The Royal Society Interface 15, no. 139 (2018): 20170582. http://dx.doi.org/10.1098/rsif.2017.0582.
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Microglia are a major cellular component of gliomas, and abundant in the centre of the tumour and at the infiltrative margins. While glioma is a notoriously infiltrative disease, the dynamics of microglia and glioma migratory patterns have not been well characterized. To investigate the migratory behaviour of microglia and glioma cells at the infiltrative edge, we performed two-colour time-lapse fluorescence microscopy of brain slices generated from a platelet-derived growth factor-B (PDGFB)-driven rat model of glioma, in which glioma cells and microglia were each labelled with one of two different fluorescent markers. We used mathematical techniques to analyse glioma cells and microglia motility with both single cell tracking and particle image velocimetry (PIV). Our results show microglia motility is strongly correlated with the presence of glioma, while the correlation of the speeds of glioma cells and microglia was variable and weak. Additionally, we showed that microglia and glioma cells exhibit different types of diffusive migratory behaviour. Microglia movement fit a simple random walk, while glioma cell movement fits a super diffusion pattern. These results show that glioma cells stimulate microglia motility at the infiltrative margins, creating a correlation between the spatial distribution of glioma cells and the pattern of microglia motility.
Dissertations / Theses on the topic "Migratory pattern"
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Herse, Mark Richard. "Landscape ecology of two species of declining grassland sparrows." Thesis, Kansas State University, 2017. http://hdl.handle.net/2097/35786.
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Master of Science<br>Department of Biology<br>Alice Boyle<br>Species extinctions over the past two centuries have mainly been caused by habitat destruction. Landscape change typically reduces habitat area, and can fragment contiguous habitat into remnant patches that are more subject to anthropogenic disturbance. Furthermore, changes in the landscape matrix and land-use intensification within remaining natural areas can reduce habitat quality and exacerbate the consequences of habitat loss and fragmentation. Accordingly, wildlife conservation requires an understanding of how landscape structure influences habitat selection. However, most studies of habitat selection are conducted at fine spatial scales and fail to account for landscape context. Temperate grasslands are a critically endangered biome, and remaining prairies are threatened by woody encroachment and disruptions to historic fire-grazing regimes. Here, I investigated the effects of habitat area, fragmentation, woody cover, and rangeland management on habitat selection by two species of declining grassland-obligate sparrows: Henslow’s Sparrows (Ammodramus henslowii) and Grasshopper Sparrows (A. savannarum). I conducted >10,000 bird surveys at sites located throughout eastern Kansas, home to North America’s largest remaining tracts of tallgrass prairie, during the breeding seasons of 2015 and 2016. I assessed the relative importance of different landscape attributes in determining occurrence and within-season site-fidelity of Henslow’s Sparrows using dynamic occupancy models. The species was rare, inhabited <1% of sites, and appeared and disappeared from sites within and between seasons. Henslow’s Sparrows only settled in unburned prairie early in spring, but later in the season, inhabited burned areas and responded to landscape structure at larger scales (50-ha area early in spring vs. 200-ha during mid-season). Sparrows usually settled in unfragmented prairie, strongly favored Conservation Reserve Program (CRP) fields embedded within rangeland, avoided trees, and disappeared from hayfields after mowing. Having identified fragmentation as an important determinant of Henslow’s Sparrow occurrence, I used N-mixture models to test whether abundance of the more common Grasshopper Sparrow was driven by total habitat area or core habitat area (i.e. grasslands >60 m from woodlands, croplands, or urbanized areas). Among 50-ha landscapes containing the same total grassland area, sparrows favored landscapes with more core habitat, and like Henslow’s Sparrows, avoided trees; in landscapes containing ~50–70% grassland, abundance decreased more than threefold if half the grassland area was near an edge, and the landscape contained trees. Effective conservation requires ensuring that habitat is suitable at spatial scales larger than that of the territory or home range. Protecting prairie remnants from agricultural conversion and woody encroachment, promoting CRP enrollment, and maintaining portions of undisturbed prairie in working rangelands each year are critical to protecting threatened grassland species. Both Henslow’s Sparrows and Grasshopper Sparrows were influenced by habitat fragmentation, underscoring the importance of landscape features in driving habitat selection by migratory birds. As habitat loss threatens animal populations worldwide, conservation efforts focused on protecting and restoring core habitat could help mitigate declines of sensitive species.
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Oates, Nathan Lewis Trudy. "Migratory patterns stories /." Diss., Columbia, Mo. : University of Missouri--Columbia, 2008. http://hdl.handle.net/10355/7186.
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Title from PDF of title page (University of Missouri--Columbia, viewed on March 2, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Dr. Trudy Lewis, Dissertation Supervisor. Vita. Includes bibliographical references.
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Castagnone, E. ""Building a comprehensive framework of African migration patterns: the case of migration between Senegal and Europe"." Doctoral thesis, Università degli Studi di Milano, 2011. http://hdl.handle.net/2434/160858.
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Migration theories, which guided prior research, have been predominantly based on static dichotomous categorizations. In particular most research has been guided by assumptions conceiving migration primarily as: 1) a one-off move from a departure country “A” to a destination country “B”; 2) directed to Europe (revealing a strong Eurocentric bias); 3) entailing a permanent settlement; 4) and with little or no spontaneous return from Europe to origin countries. According to this logic, previous research concentrated almost exclusively on specific phases of the migration process (settlement and integration in destination countries; temporary returns and circulation between sending and receiving countries; permanent return in origin countries) or on their effect on sending and receiving countries.
Furthermore, available data on migration are few, weakly comparable and fail to capture the longitudinal character of migration. These limitations particularly apply to migration from sub-Saharan Africa, where the diversification and growing complexity of migratory flows, rather than an increase in volume (as conveyed by public opinion and the media) has been the most significant change in the last decades. In addition to conceptual problems, this lack of data prevents gaining an improved understanding into the complex and rapidly changing dynamics of African migrations.
The aim of the PhD research is to fill these conceptual and empirical gaps by analyzing migration trajectories as 1) complex mobility systems, conceiving migration as a continuous process that develops over migrants’ lives through different phases and steps; 2) from the origin country, through intermediate-transit and destination ones 3) studying the extent of mobility within the EU 4) and including (short and long-term) circulation and permanent returns to origin country. Following these principles, the theoretical and empirical objective of the study is to identify and to analyze the main migration patterns between Africa and Europe, through a longitudinal analysis of their complex composition, geographical extent and changing nature over time.
The research draws on the MAFE dataset, which provides a unique opportunity to empirically pursue this research objective. The MAFE Senegal project yielded a new individual biographic data set in 2008, through comparables surveys in both sending (Senegal) and receiving countries (France, Italy, Spain) among both documented and undocumented migrants. MAFE data are: 1) multi-topic (various aspects of the respondents' lives are covered by the questionnaires, including work experience, family formation, residential mobility, legal status, etc.); 2) multi-level (meso and macro comparable data in four surveyed countries are associated to individual-micro data on migrants); 3) longitudinal (through retrospective data) 4) transnational (collected and giving account for both sending and receiving countries). The unique nature of this dataset allows to undertake innovative research on complex structure of individuals’ migration.
By investigating the individual migrants’ trajectories, the research focuses in particular on “transits” and “temporary returns”. The analysis showed the increasing crucial role of interconnectivity played by these forms of mobility between West African and European migration systems.
Finally, by analyzing the intersections of the different mobility structures (linear, step-wise and circular) and geographical areas (sub-Saharan Africa, North Africa and Europe) in which Senegalese migration develops, the research finally elaborates a typology of the main patterns of mobility between Africa and Europe and outlines the profiles of migrants who undertake different mobility patterns.
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Ponti, de la Iglesia Raquel. "Evolutionary patterns and processes of migratory behaviour in Palearctic-Paleotropical birds = Patrones y procesos evolutivos del comportamiento migratorio en aves del Paleártico-Paleotrópico." Doctoral thesis, Universitat de Barcelona, 2018. http://hdl.handle.net/10803/665205.
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One of the most fascinating aspects of birds is their capability of migrate from one area to another throughout the year. Unravelling the patterns and processes involved in the evolution of migration is paramount to understand the current biogeography, ecology and evolution of migratory birds. On this basis, the main aim of the present thesis was to extend the knowledge of the mechanisms involved in the evolution of bird migration. To achieve that two main sections are presented in this thesis. In the first one, the aims were to disentangle the patterns of evolution of migratory behaviour and the identifying the main factors that could play an important role in it, using Sylvia warblers as case of study. In the second section, we explored the climatic niche and the potential distribution of breeding and wintering ranges in the last glacial maximum (LGM) of trans-Saharan long migratory species, in order to unravel the changes in migratory behaviour.
We explored the evolution of migration in Sylvia warblers as both a discrete and continuous character using ancestral state reconstruction methods. We recovered the basal node as migratory in most analyses, suggesting seven independent losses of migratory behaviour in Sylvia warblers. Both analyses performed with migration as discrete or continuous character recovered different probabilities of sedentariness or migratoriness in some conflicting nodes depending of the ASR elements used. This forced as to consider controversial hypotheses of evolution of migration in some clades that could evolved from migratory to sedentary in a very short period of time or going through a partial migratory status instead.
We used phylogenetic comparative methods to assess whether the evolutionary patterns of migratory distances are correlated with several biometric, climatic and productivity variables in a phylogenetic context, using Sylvia warblers as a case study. Our results recover net primary productivity (NPP) in the breeding range and during the breeding season as the variable with stronger positive correlation with migratory distances. Several climatic variables show a correlation with the evolution of migration and among morphological variables, migratory lineages tend to have longer wings than sedentary ones. It is not possible to disentangle if NPP was a main driver in the evolution of bird migratory behaviour or a consequence of it, yet migration and NPP seem to be tightly related today and along their evolutionary history.
Migratory birds occupy different geographic areas during breeding and wintering periods and are exposed to different factors. One of those factors is the climatic component of the niche. We tested if migratory birds display similar climatic conditions in both breeding and wintering areas, using 355 bird migratory species from Eurasian to Africa flyways. Our results show that there is not climatic niche overlap between both ranges. This suggests that the climatic niche of most Euro-African migratory species is larger than expected. Given these results, both breeding and wintering climatic data need to be considered when performing species distribution models, to incorporate the total width of the climatic niche.
During the Plio-Pleistocene, glacial cycles have shaped Northern Hemisphere birds' distributions that could result in changes in their migratory behaviour. In this context, it has been suggested that long-distance North American migratory species could have lost their migratory condition during cold periods regaining it later in warmer periods. We tested this hypothesis in Eurasian-African extant migratory bird species. We modelled present and LGM distribution of 80 trans-Saharan bird migratory species and we revised the available fossil record. Our results show a southwards reduction of the breeding distributions during the LGM compared to the present and similar wintering areas in the present and Pleistocene, with the Saharan belt gap always present through time. These results and the Pleistocene fossils from Africa not support the hypothesis of a loss of migratory condition in these species.<br>Uno de los aspectos más fascinantes dentro de la ornitología es el estudio de la migración. Saber cuáles son los patrones y procesos implicados en la evolución de la migración, permite descubrir tanto componentes ecológicos, biogeográficos como evolutivos dentro las aves. Por ello, en esta tesis se pretende aumentar el conocimiento acerca de los mecanismos implicados en la evolución de la migración en algunas aves.
Por un lado, se investigó cómo evolucionó la migración y qué factores pueden actuar como motores de su evolución en un contexto filogenético usando el género Sylvia como caso de estudio. Encontramos que los procesos de cambio en el comportamiento migratorio ocurrían siempre de migratorio a sedentario, siendo el antecesor del género también migratorio. Esto supone que probablemente el coste de pasar de migratorio a sedentario es menor que al revés. Además, evaluando si factores como el clima, la morfología o la productividad eran importantes en la evolución de la migración en el género Sylvia, encontramos que la productividad juega un papel muy importante. Esto supone que probablemente las especies comenzaron a migrar aprovechando los picos de productividad que surgen en latitudes medias durante la época de cría.
Por otro lado, se investigó la evolución de la migración en un contexto biogeográfico y macrecológico utilizando especies migratorias Euro-Africanas. Primero se evaluó si las especies migratorias están sometidas a las mismas condiciones climáticas tanto en las zonas de cría como en invernada. Si fuera así, las especies migratorias podrían moverse guiándose o en busca de condiciones similares a lo largo de todo el año. Sin embargo, encontramos que no es así y por lo tanto las especies migratorias presentan un nicho climático mayor de lo esperado que es necesario tener en cuenta a la hora de hacer modelos de distribución. Considerando esto, realizamos modelos de distribución de especies transaharianas tanto en el presente como durante el último glacial máximo. En este caso queríamos descubrir si las especies seguían migrando cuando parte del Paleártico estaba cubierto de nieve, o si se hicieron sedentarias como se ha sugerido para especies migratorias norteamericanas. Nuestros resultados, junto con el registro fósil consultado, no apoyan que las especies dejaran de migrar, sino que probablemente redujeran sus distancias migratorias.
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Conti, Francesca. "Leaving or staying - an analysis of Italian graduates' migratory patterns." Thesis, University of Sussex, 2012. http://sro.sussex.ac.uk/id/eprint/39453/.
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The migration of graduates is one of the main characteristics of the current phase of Italian emigration. This thesis investigates why Italian graduates are migrating both within and outside Italy. The main research questions this thesis gravitates around are: why do Italian graduates migrate? What is the difference, if any, in terms of motivations, between graduates who decide to migrate internally within Italy as compared to the ones who decide to migrate to the UK? Why do some graduates stay in their home town despite regional and national differentials in terms of employment and lifestyle opportunities? Namely, this thesis examines and compares the motivations that drove three samples of Italian graduates to migrate. Firstly, those who migrated to the UK; secondly, those who from the southern Italy moved internally to the Italian cities of Rome (centre) and Milan (north); and thirdly, those who decided to stay in the Italian cities of Palermo (south), Rome (centre), and Milan (north). The analysis proposed is qualitative and exploratory in nature and is based on 87 in-depth interviews conducted with Italian graduates in 2008-2009. The study provides an integrated view of different migratory patterns. In particular, the comparison between internal and international flows indicates that Italian graduates are generally oriented towards the UK and particularly towards London because of the many professional, educational and cultural opportunities that London as a global city has to offer. Meanwhile, internal migration within Italy (south to north) is generally experienced as constrained by deep regional differences in terms of employment opportunities between southern and northern Italy. Finally, staying in one's home town emerged as a decision based, among other factors, on the lack of interest in experiencing mobility vs. the importance a person attributes to social, emotional and cultural ties to his or her own family, friends, partners and the local area.
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Tierney, Lauren. "An Agent-Based Model of Wildlife Migratory Patterns in Human-Disturbed Landscapes." Thesis, University of Oregon, 2015. http://hdl.handle.net/1794/19266.
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In recent years, human decision-making has led to significant landscape impacts in the western United States. Specifically, migratory wildlife populations have increasingly been impacted by rural urban development and energy resource development. This research presents the application of agent-based modeling to explore how such impacts influence the characteristics of migratory animal movement, focusing on mule deer (Odocoileus hemionus) in Western Wyoming. This study utilizes complex adaptive systems and agent-based modeling frameworks to increase understanding of migratory patterns in a changing landscape and explores thresholds of interference to migration patterns due to increased habitat degradation and fragmentation. The agent-based model utilizes GPS-collar data to examine how individual processes lead to population-level patterns of movement and adaptation. The assessment incorporates elements from both human and natural systems to explore potential future scenarios for human development in the natural landscape and incorporates adaptive behaviors, as well as animal-movement ecology, in changing landscapes.
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DeSaix, Matthew G. "Migratory patterns and population genetic structure in a declining wetland-dependent songbird." VCU Scholars Compass, 2018. https://scholarscompass.vcu.edu/etd/5432.
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Understanding migratory connectivity is essential for assessing the drivers behind population dynamics and for implementing effective management in migratory species. Genetic markers provide a means to describe migratory connectivity, as well as incorporate population genetic analyses, however genetic markers can be uninformative for species with weak genetic structure. In this study, we evaluate range-wide population genetic structure and migratory connectivity in the prothonotary warbler, Protonotaria citrea, a wetland-dependent neotropical migratory songbird, using high-resolution genetic markers. We reveal regional genetic structure between sampling sites in the Mississippi River Valley and the Atlantic Seaboard with overall weak genetic differentiation among populations (FST = 0.0051). By ranking loci by FST and using subsets of the most differentiated genetic markers (200 – 3000), we identify a maximum assignment accuracy (89.7% to site, 94.3% to region) using 600 single nucleotide polymorphisms. We assign samples from unknown origin nonbreeding sites to a breeding region, illustrating weak migratory connectivity between prothonotary warbler breeding and nonbreeding grounds. Our results highlight the importance of using high-resolution markers in studies of migratory connectivity with species exhibiting weak genetic structure. Using similar techniques, studies may begin to describe population genetic structure that was previously undocumented, allowing us to infer the migratory patterns of an increasing number of species.
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Gordo, Villoslada Óscar. "Spatial and temporal migratory patterns of trans-Saharan birds in the Iberian Peninsula." Doctoral thesis, Universitat de Barcelona, 2006. http://hdl.handle.net/10803/803.
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The spatial and temporal variability of migratory phenology of <i>Ciconia ciconia, Cuculus canorus, Apus apus, Hirundo rustica</i> and <i>Luscinia megarhynchos</i> were studied by means of 44000 records for 1400 spanish sites during the period 1944-2004. In all species, first individuals arrive to the southern areas of Iberia, to low altitude sites, with dry and warm summers, and near to the Straits of Gibraltar. A. apus and <i>H. rustica</i> showed quite similar spatial patters due to the strong influence of fixed factors, which impose optimum migratory pathways. The onset of singing of <i>C. canorus</i> and <i>L. megarhynchos</i> showed a different and weak geographical pattern, which suggests that other local environmental factors could be influencing singing behaviour of males. In spite to be a soaring species, <i>C. ciconia</i> follows similar spatial patters for spring arrivals. However, its autumn departure and length of stay did not show any spatial gradient. Excepting <i>L. megarhynchos</i>, all species have advanced their arrival dates during the last three decades. Nevertheless, current dates are similar to those recorded sixty years ago. The strongest advancement was detected in <i>C. ciconia</i>, probably as a result of the growing number of wintering individuals in Iberia. In overall, species arrived earlier those years with plentiful rainfalls in western Africa and warmer spring temperatures in Iberia. Therefore, climate change is probably the underlying mechanism for temporal changes in migratory phenology also in Mediterranean populations. Departure dates only showed a significant advancement in <i>H. rustica</i>. Departures were weakly related to climatic variables. Temperatures during breeding period advanced departures in all species, while only <i>H. rustica</i> was affected by temperatures at departure time.<br>S'estudià la variabilitat espacial i temporal en la fenologia de la migració de diverses aus trans-Saharianes. Es van fer servir unes 44000 dates d'arribada i emigració de cigonya ("Ciconia ciconia"), cucut ("Cuculus canorus"), falciot ("Apus apus"), oreneta ("Hirundo rustica") i rossinyol ("Luscinia megarhynchos") enregistrades a unes 1400 localitats espanyoles entre 1944 i 2004 pels voluntaris de la xarxa fenològica de l'"Instituto Nacional de Meteorologí"a.<br/>Totes les espècies colonitzen la Península Ibèrica seguint un eix sudoest-nordest durant la primavera. Els primers individus arriben al sud, a localitats a baixa altitud, amb estius secs i calorosos i properes a l'Estret de Gibraltar. En el cas de l'oreneta i el falciot els patrons van ser especialment similars degut a la dependència de factors ambientals invariables, com ara el relleu, que marquen les rutes migratòries òptimes a través de la península en ambdues espècies. L'inici del cant va mostrar patrons espacials diferents en el cucut i el rossinyol, probablement com a resultat de la biologia tan diferent d'ambdues espècies. L'escassa capacitat predictiva dels seus models podria indicar que el cant també depèn d'altres factors que incideixen sobre les decisions dels mascles de cantar o no fer-ho i que són alienes a la migració. L'arribada de la cigonya segueix els patrons generals citats anteriorment tot i ser una espècie planadora. Pel contrari, les diferències entre localitats en les dates d'emigració i la durada de l'estada no tenen cap estructura espacial en aquesta espècie. Les cigonyes es reuneixen en grans estols durant la migració post-nupcial que tenen un comportament independent de les condicions ambientals de les localitats on crien. L'estada depèn més de la data quan els individus decideixen marxar, que de la data quan arriben.<br/>La cigonya, cucut, falciot i oreneta han avançat la seva data d'arribada durant els darrers trenta anys, tot i que les dates enregistrades a l'actualitat són semblants a les que s'enregistraven ara fa seixanta anys. L'excepció és la cigonya, que sí ha avançat l'arribada en torn un mes. Aquest canvi tan brusc probablement està relacionat amb el nombre cada cop més gran d'individus que roman a la península durant l'hivern. Aquesta tendència a no migrar possiblement és el resultat combinat dels costos d' anar a les àrees clàssiques d'hivernada del Sahel, on les sequeres persistents provocarien una elevada mortalitat entre els individus que hi van, en comparació amb els beneficis de romandre tot l'any a la península, on la proliferació de deixalleries i certes espècies invasores proporcionen una font contínua d'aliment que abans no existia. L'arribada es va veure afectada tant pel clima de les àrees d'hivernada com el de cria en la resta d'espècies. Les aus arriben abans els anys humits a l'Àfrica occidental i les primaveres càlides a la península. Els canvis climàtics de les darreres dècades són, doncs, els responsables més probables dels canvis temporals en les dates d'arribada. Les dates d'emigració de la cigonya, falciot i oreneta van mostrar fluctuacions temporals similars, avançant la seva sortida fins a mitjans dels 60, ajornant-la fins a mitjans dels 80 i tornant-la a avançar d'ençà les hores. Temperatures elevades durant l'època de reproducció es van associar amb un avançament de l'emigració a les tres espècies, mentre que només l'oreneta es va veure afectada per les temperatures durant el període d'emigració, anant-se més tard aquells anys més calorosos durant aquestes dates. Podem concloure que les xarxes de voluntaris constitueixen una bona eina per avaluar la variabilitat espacial escala i temporal de la migració de les aus i que s'haurien de seguir potenciant, especialment ara, donada la sensibilitat de la fenologia al canvi climàtic.
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Andrade, Renan Siqueira Leite de. "Estudo do comportamento migratório da truta (Salmo trutta L.) no limite sul de sua distribuição." Master's thesis, Universidade de Évora, 2020. http://hdl.handle.net/10174/27971.
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A região central de Portugal representa o limite sul da distribuição dos dois ecótipos de Salmo trutta L, o residente (i.e., truta-de-rio) e o anádromo (i.e., truta-marisca). Para além dos constrangimentos a uma escala mais global que as espécies de peixes experienciam, como o aquecimento global, os rios dessa região estão severamente fragmentados pela presença de grandes barragens e pequeno-médios açudes, construídos maioritariamente para a produção de eletricidade e recolha de água para uso doméstico, industrial e para a agricultura. Esforços direcionados ao aumento do conhecimento sobre a truta em resposta às pressões antropogênicas e pela mitigação da fragmentação do habitat existente, têm sido constantemente desenvolvidos nos últimos 8-10 anos no Rio Mondego. Considerado um dos mais importantes rios em Portugal para peixes migradores, uma passagem para peixes de fendas verticais (i.e., 125 metros de comprimento, 23 bacias) foi construída em 2011 no Açude-Ponte de Coimbra e monitorização contínua vem sendo realizada desde 2013 com recurso a censos visuais. Os dados de contagem sobre a truta revelaram que entre 2013 e 2017 mais de 300 trutas utilizaram com sucesso a passagem durante a sua migração para montante. Nos anos estudados, os meses com maior contagem de trutas foram maio (21,1%), junho (52,7%) e julho (14,3%). O padrão circadiano dos movimentos para montante revelou que as trutas migraram pela passagem maioritariamente ao amanhecer e no final do dia. O tamanho das trutas utilizando a passagem com sucesso foi dependente do mês, pois as maiores trutas (CT>300 mm) tendem a usar a passagem mais cedo (em maio), seguida daquelas de menores dimensões (CT<300 mm), que tendem a utilizar a passagem mais tarde na época de migração (julho). Modelos exploratórios revelaram que fatores ambientais como o fotoperíodo e o período do dia, estão significativamente influenciando o uso da passagem para peixes pelas trutas durante todos os anos de estudo; Abstract:
Study of Migration Behavior of Trout (Salmo trutta L.) in the Southern Limit of its Distribution
The central region of Portugal represents the southern limit of the distribution of both ecotypes of Salmo trutta L, the resident (i.e., brown trout) and anadromous (i.e., sea trout). Besides the constraints, such as global warming, that the species experiences, rivers in this region are severely fragmented by the presence of large dams and small-to-medium weirs, built mainly for hydroelectricity production and water abstraction for domestic, industrial and agriculture uses. Efforts towards an increase in the knowledge of trout responses to anthropogenic pressures and for the mitigation of existent habitat fragmentation have been consistently developed for the last 8-10 years in Mondego River. Considered one of the most important rivers in Portugal for migratory fish, a vertical-slot fishway (i.e., 125 meters long, 23 pools) was built in 2011 at the Coimbra dam and monitoring is continuously being conducted since 2013 using visual census. Count data on trout revealed that between 2013 and 2017 more than 300 trouts have successfully used this fish pass during their upstream migration. In the studied years, the months with the highest trout count were May (21.1%), June (52.7%) and July (14.3%). Circadian pattern of upstream movement revealed that trouts migrate through the fish pass mostly in the morning and at the end of the day. Size of trout successfully using the fish pass was month dependent, as larger trouts (CT>300mm) tend to use the fish pass earlier (in May), followed by those with smaller dimensions (CT<300 mm), that tend to use the fish pass later on the migration season (July). Explanatory models revealed that different environmental factors, such as photoperiod and day period, are significantly influencing fish pass use by trout in all the studied years.
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Walther, Benjamin (Benjamin Dwaine). "Migratory patterns of American shad (Alosa sapidissima) revealed by natural geochemical tags in otoliths." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/38635.
Full textAbstract:
Thesis (Ph. D.)--Joint Program in Oceanography/Applied Ocean Science and Engineering (Massachusetts Institute of Technology, Dept. of Biology; and the Woods Hole Oceanographic Institution), 2007.<br>Includes bibliographical references (p. 188-204).<br>Geochemical signatures in the otoliths of diadromous fishes may allow for retrospective analyses of natal origins. In an assessment of river-specific signatures in American shad (Alosa sapidissima), an anadromous clupeid native to the Atlantic coast of North America, stable isotope and elemental ratios in otoliths of juvenile American shad produced accurate natal tags from 12 rivers. Significant inter-annual variability in geochemical signatures from several rivers was detected, due largely to differences in 8180 values among years. The database was further expanded to include 20 rivers from Florida to Quebec, encompassing all major spawning populations. This task was accomplished by collecting juvenile otoliths along with water samples from rivers where juveniles were not sampled. Regressions between otolith and water chemistry for those rivers where both were collected showed significant relationships for Sr:Ca, Ba:Ca, 86180, and 87Sr:86Sr ratios but not for Mg:Ca or Mn:Ca. Despite reducing the combined signature to only four chemical ratios, cross-validated classification accuracies of known-origin juveniles averaged 93%. Ground-truthed signatures were used to classify migrants of unknown origins. Adults returning to spawn in the York River were classified according to their otolith composition.<br>(cont.) Only 6% of spawners originated from rivers other than the York, supporting the hypothesis that most American shad spawn in their natal river. Of remaining spawners, 79% originated from the Mattaponi River and 21% from the Pamunkey River. The results suggested that while most American shad home to their natal river there is less fidelity to individual tributaries, allowing subsidies to subpopulations with persistent recruitment failure. Otolith signatures were also used in mixed-stock analyses of immature migrants along the coast of Maine in the spring and Minas Basin in the summer. Mixed-stock compositions showed remarkably low diversity and were dominated by fish from the Shubenacadie and Hudson rivers, with an increasing proportion of Potomac River fish over time. In contrast to results from adult tagging studies, southern stocks were virtually absent. These data suggest ontogenetic shifts in migratory behavior. The thesis concludes with a report that water contributed 83% of Sr and 98% of Ba in the otoliths of a marine fish.<br>by Benjamin Walther.<br>Ph.D.
Books on the topic "Migratory pattern"
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Rodríguez, Mauricio, ed. Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440.
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Johnson, Christopher. Musicians’ Migratory Patterns. Routledge, 2019. http://dx.doi.org/10.4324/9780429027512.
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Pahlke, Keith A. Migratory patterns and fishery contributions of Chilkat River chinook salmon. Alaska Dept. of Fish and Game, Division of Sport Fish, 1990.
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Nehru Memorial Museum and Library, ed. South Asia-Gulf migratory corridor: Emerging patterns, prospects and challenges. Nehru Memorial Museum and Library, 2014.
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Pahlke, Keith A. Migratory patterns and fishery contributions of Chilkat River chinook salmon, 1990. Alaska Dept. of Fish and Game, Division of Sport Fish, 1991.
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Flannery, Blair G. Run timing, migratory patterns, and harvest information of chinook salmon stocks within the Yukon River. U.S. Fish and Wildlife Service, Conservation Genetics Laboratory, 2006.
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Capodagli, Liane C. Fall migratory patterns in white-tailed deer (Odocoileus virginianus) at a traditional water crossing near Española, Ontario. Laurentian University, Department of Biology, 1998.
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Carmichael, Richard W. Migratory patterns of adult Wallowa stock summer steelhead in the Grande Ronde and Snake Rivers during the 1987-88 run year. Oregon Dept. of Fish and Wildlife, 1990.
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Musicians' Migratory Patterns: The Adriatic Coasts. Routledge, 2018. http://dx.doi.org/10.4324/9780203702024.
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Sciannameo, Franco. Musicians' Migratory Patterns: The Adriatic Coasts. Taylor & Francis Group, 2018.
Find full textBook chapters on the topic "Migratory pattern"
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Chernetsov, Nikita. "Temporal Pattern and Energy Cost of Migratory Flight." In Passerine Migration. Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-29020-6_7.
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Rodríguez, Álvaro G. Díaz. "Sound Through the Looking Glass." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-1.
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Velázquez, Rossana Lara. "Network Platforms, Electronic Scenes, and Cultural Activism at the Tijuana–San Diego Border." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-2.
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Terrazas, Wilfrido. "Sonic Borders of Self." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-3.
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de Cossio, Teresa Díaz, and Paul N. Roth. "P/T." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-4.
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Ruiz, Turcios. "Sound Migration." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-5.
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Rodríguez, Mauricio. "Borderline Crossings." In Musicians’ Migratory Patterns. Routledge, 2020. http://dx.doi.org/10.4324/9780429450440-6.
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Johnson, Christopher. "Introduction." In Musicians’ Migratory Patterns. Routledge, 2019. http://dx.doi.org/10.4324/9780429027512-1.
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Johnson, Christopher. "Observers of Culture." In Musicians’ Migratory Patterns. Routledge, 2019. http://dx.doi.org/10.4324/9780429027512-2.
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Johnson, Christopher. "Performance Practices." In Musicians’ Migratory Patterns. Routledge, 2019. http://dx.doi.org/10.4324/9780429027512-3.
Full textConference papers on the topic "Migratory pattern"
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Whately, Lauro, Raquel Pinto, Muralidharan Rangarajan, Liviu Lftode, Ricardo Bianchini, and Claudio L. Amorim. "Adaptive Techniques for Home-based Software DSMs." In Simpósio de Arquitetura de Computadores e Processamento de Alto Desempenho. Sociedade Brasileira de Computação, 2001. http://dx.doi.org/10.5753/sbac-pad.2001.22205.
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This paper proposes and evaluates Home-based Adaptive Protocol (HAP), a software distributed shared-memory system. HAP performs two key functions that distinguish it from most other distributed shared-memory systems: detection of sharing patterns and behavior adaptation based on these patterns. Detection consists of identifying any change in the sharing pattern of a shared page. Adaptation consists of using a strategy that is specific to the sharing pattern detected to optimize the performance of the system. More specifically, HAP uses updates to maintain the coherence of single-writer pages, which fall under the migratory and producer-consumer sharing patterns. Invalidations are used to maintain the coherence of multiple-writer pages, which can potentially be falsely shared. As part of HAP's adaptation strategy, we dynamically assign homes to pages based on their sharing patterns. We performed preliminary experiments on an 8-node cluster of PCs. Our results show that the current implementation of HAP substantially improves the performance of single-writer applications in which shared pages are modified in critical sections protected by locks. The results also indicate potential improvement in the performance of applications exhibiting other sharing patterns such as producer-consumer, single-writer between barriers. However, the detection and adaptation techniques for these patterns have to be redesigned to exploit the real performance gains that can be achieved with the adaptive system.
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Karagiannis, George S., and Eleftherios P. Diamandis. "Abstract LB-282: Cancer-specific motogenic signals induce collective migratory pattern in myofibroblasts via increased tight junction formation." In Proceedings: AACR 102nd Annual Meeting 2011‐‐ Apr 2‐6, 2011; Orlando, FL. American Association for Cancer Research, 2011. http://dx.doi.org/10.1158/1538-7445.am2011-lb-282.
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Muharudin, Eko, St Y. Slamet, Sarwiji Suwandi, and Atikah Anindyarini. "The Indonesian Politeness Speaking Pattern Of Elementary School Students With A Migratory Family Background In Kampung Laut Cilacap Regency." In Proceedings of the 1st International Conference of Humanities and Social Science, ICHSS 2021, 8 December 2021, Surakarta, Central Java, Indonesia. EAI, 2022. http://dx.doi.org/10.4108/eai.8-12-2021.2322566.
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Hao, Zhenhua. "Wind-related orientation patterns in migratory insects in Australia." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.108160.
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Wang, Ping, David K. Tidwell, Tanya M. Beck, and Nicholas C. Kraus. "Sedimentation Patterns in a Stabilized Migratory Inlet, Blind Pass, Florida." In Sixth International Symposium on Coastal Engineering and Science of Coastal Sediment Process. American Society of Civil Engineers, 2007. http://dx.doi.org/10.1061/40926(239)106.
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Babakov, Alexander, Alexander Babakov, Boris Chubarenko, and Boris Chubarenko. "SEDIMENT TRANSPORT NEAR THE VISTULA SPIT (BALTIC SEA)." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.31519/conferencearticle_5b1b93751e4b25.42106675.
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The Vistula Spit is a sandy elongated barrier form which borders the Vistula Lagoon from the Baltic Sea. The evolution of the spit as well as nowadays sediment transport along the marine shore of it are still under discussion, especially due to existing of entrance jetties bordered the Strait of Baltiysk, the single inlet to the Vistula Lagoon, and advanced up to 10 m depth seaward. Different hypothesizes about ether uniform transport from north to south or contrary directed fluxes with convergence at various points at the spit shore are discussed. Most of them are based on fact of accumulation of sandy material just to north from the northern entrance jetty as in incoming corner. Basing on statistics of near-surface wind, direct measurements of currents and analysis of direction of the scour hole located between jetties the paper confirms the existence of two opposite fluxes - one brings alluvium from the Vistula River mouth to north as main winds blow from south-west and west, and, in contrast, another one brings material obtained by erosion of the western shore of the Sambian Peninsula to south. Dynamic equilibrium between these fluxes through hundreds of years resulted in formation of present shape of the coastline, and it is expected that the area of the equilibrium in alongshore migrations is in the top of the Yantarny- Baltiysk concave. Appearance of entrance jetties of the Vistula Lagoon inlet, in the area where opposite alongshore migration of material are nearly equalised, leaded to the accretion-erosion pattern, which is pseudo equal to sediment transport from north to south. In fact the accumulation of sand just to north from the northern entrance jetty and erosion to south from southern jetty may be explained by mechanism, when the sand transported in the incoming corner just near the northern mole by southward migrations is excluded from migratory movement and deposited in the zone shadowed by jetties (from northward migrations). Erosion to south of jetties is explained by wind surges in incoming corner for prevailing western winds.
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Babakov, Alexander, Alexander Babakov, Boris Chubarenko, and Boris Chubarenko. "SEDIMENT TRANSPORT NEAR THE VISTULA SPIT (BALTIC SEA)." In Managing risks to coastal regions and communities in a changing world. Academus Publishing, 2017. http://dx.doi.org/10.21610/conferencearticle_58b4315e36e45.
Full textAbstract:
The Vistula Spit is a sandy elongated barrier form which borders the Vistula Lagoon from the Baltic Sea. The evolution of the spit as well as nowadays sediment transport along the marine shore of it are still under discussion, especially due to existing of entrance jetties bordered the Strait of Baltiysk, the single inlet to the Vistula Lagoon, and advanced up to 10 m depth seaward. Different hypothesizes about ether uniform transport from north to south or contrary directed fluxes with convergence at various points at the spit shore are discussed. Most of them are based on fact of accumulation of sandy material just to north from the northern entrance jetty as in incoming corner. Basing on statistics of near-surface wind, direct measurements of currents and analysis of direction of the scour hole located between jetties the paper confirms the existence of two opposite fluxes - one brings alluvium from the Vistula River mouth to north as main winds blow from south-west and west, and, in contrast, another one brings material obtained by erosion of the western shore of the Sambian Peninsula to south. Dynamic equilibrium between these fluxes through hundreds of years resulted in formation of present shape of the coastline, and it is expected that the area of the equilibrium in alongshore migrations is in the top of the Yantarny- Baltiysk concave. Appearance of entrance jetties of the Vistula Lagoon inlet, in the area where opposite alongshore migration of material are nearly equalised, leaded to the accretion-erosion pattern, which is pseudo equal to sediment transport from north to south. In fact the accumulation of sand just to north from the northern entrance jetty and erosion to south from southern jetty may be explained by mechanism, when the sand transported in the incoming corner just near the northern mole by southward migrations is excluded from migratory movement and deposited in the zone shadowed by jetties (from northward migrations). Erosion to south of jetties is explained by wind surges in incoming corner for prevailing western winds.
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Phamduy, T. B., C. J. Rivet, D. Kingsley, R. J. Gilbert, and D. B. Chrisey. "Examination of the migratory potential of patterned cortical neurons using laser direct-write." In 2012 38th Annual Northeast Bioengineering Conference (NEBEC). IEEE, 2012. http://dx.doi.org/10.1109/nebc.2012.6207079.
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Nagoshi, Rodney N. "Modeling the effects of climate on the infestation patterns of a migratory crop pest insect." In 2016 International Congress of Entomology. Entomological Society of America, 2016. http://dx.doi.org/10.1603/ice.2016.107645.
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Rato, Ana S., Carlos M. Alexandre, Sílvia Pedro, et al. "Migratory Patterns of Two Potamodromous Fish Species Assessed through Fish-Pass Monitoring in Mondego River, Portugal." In SIBIC 2022. MDPI, 2022. http://dx.doi.org/10.3390/blsf2022013127.
Full textReports on the topic "Migratory pattern"
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Becker, Adam. Survivorship and Breeding Dispersal Patterns of a Migratory, Socially Monogamous Passerine; the Scissor-tailed Flycatcher (Tyrannus forficatus). Portland State University Library, 2000. http://dx.doi.org/10.15760/etd.2649.
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Sankovich, Paul, Stephanie Gunckel, and Alan Hemmingsen. Migratory Patterns, Structure, Abundance, and Status of Bull Trout Populations from Subbasins in the Columbia Plateau, Annual Report 2001-2002. Office of Scientific and Technical Information (OSTI), 2003. http://dx.doi.org/10.2172/963035.
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