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Articles de revues sur le sujet « Bird population dynamics »

Auteur : Grafiati

Publié le 9 mars 2023

Mis à jour le 31 juillet 2025

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1

Bowler, Diana, Raja Lorena Richter, Daniel Eskildsen, et al. "Geographic variation in the population trends of common breeding birds across central Europe." Basic and Applied Ecology 56 (July 11, 2021): 72–84. https://doi.org/10.5281/zenodo.15344940.

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<strong>Abstract</strong> Recent declines of many European bird species have been linked with various environmental changes, especially land-use change and climate change. Since the intensity of these environmental changes varies among different countries, we can expect geographic variation in bird population trends. Here, we compared the population trends of bird species among neighbouring countries within central Europe (Czech Republic, Denmark, Germany, Switzerland) between 1990 and 2016 and examined trait-associations with population trends at both national and international scales. We fou

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Storch, David, Jaroslav Koleček, Petr Keil, Zdeněk Vermouzek, Petr Voříšek, and Jiří Reif. "Decomposing trends in bird populations: Climate, life histories and habitat affect different aspects of population change." Diversity and Distributions 29, no. 4 (2023): 572–85. https://doi.org/10.1111/ddi.13682.

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<strong>Aim:</strong> Despite the complexity of population dynamics, most studies concerning current changes in bird populations reduce the trajectory of population change to a linear trend. This may hide more complex patterns reflecting responses of bird populations to changing anthropogenic pressures. Here, we address this complexity by means of multivariate analysis and attribute different components of bird population dynamics to different potential drivers.<strong>Location</strong>: Czech Republic.<strong>Methods</strong>: We used data on population trajectories (1982–2019

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Abramova, I. V. "Bird population dynamics during the regenerative succession of mossy pine woodland in southwestern Belarus." Журнал общей биологии 84, no. 3 (2023): 215–28. http://dx.doi.org/10.31857/s004445962303003x.

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Disturbed forest ecosystems are characterized by significant spatial and temporal changes. As a part of the study on bird communities, changes in bird abundance during the secondary succession of a cleared mossy pine woodland in southwestern Belarus were investigated. The purpose of the work was to determine the inter-annual dynamics of bird species abundance and to assess the variability of individual species abundance during the secondary succession of the mossy pine woodland. The material was collected in 2000–2019. Line transects were set to conduct bird counts in ecosystems at different s

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Essa, Isra’a M. "Haemosporidian Parasites in Domestic and Wild Birds." Journal La Lifesci 6, no. 1 (2025): 1–16. https://doi.org/10.37899/journallalifesci.v6i1.1838.

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This study aims to provide brief information about the role of haemosporidian parasites in birds and significant implications for avian health, population dynamics, and control efforts. Haemosporidian parasites, belonging to the phylum Apicomplexa, are a diverse group of protozoan organisms that infect a wide range of vertebrate hosts, including birds. These parasites have a complex life cycle, with both sexual and asexual stages, and are transmitted by blood-feeding insects such as mosquitoes, midges, and blackflies. The potential impact of these parasites include a wide range of health issue

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Virkkala, Raimo, and Ari Rajasärkkä. "Climate change affects populations of northern birds in boreal protected areas." Biology Letters 7, no. 3 (2010): 395–98. http://dx.doi.org/10.1098/rsbl.2010.1052.

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Human land-use effects on species populations are minimized in protected areas and population changes can thus be more directly linked with changes in climate. In this study, bird population changes in 96 protected areas in Finland were compared using quantitative bird census data, between two time slices, 1981–1999 and 2000–2009, with the mean time span being 14 years. Bird species were categorized by distribution pattern and migratory strategy. Our results showed that northern bird species had declined by 21 per cent and southern species increased by 29 per cent in boreal protected areas dur

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Galloway, Terry D., and Robert J. Lamb. "Population Dynamics of Chewing Lice (Phthiraptera) Infesting Birds (Aves)." Annual Review of Entomology 66, no. 1 (2021): 209–24. http://dx.doi.org/10.1146/annurev-ento-041420-075608.

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In the past 25 years, studies on interactions between chewing lice and their bird hosts have increased notably. This body of work reveals that sampling of live avian hosts, collection of the lice, and the aggregated distributions of louse infestations pose challenges for assessing louse populations. The number of lice on a bird varies among host taxa, often with host size and social system. Host preening behavior limits louse abundance, depending on bill shape. The small communities of lice (typically one–four species) that live on individual birds show species-specific patterns of abundance,

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Galloway, Terry D., and Robert J. Lamb. "Population Dynamics of Chewing Lice (Phthiraptera) Infesting Birds (Aves)." Annual Review of Entomology 66, no. 1 (2021): 209–24. http://dx.doi.org/10.1146/annurev-ento-041420-075608.

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In the past 25 years, studies on interactions between chewing lice and their bird hosts have increased notably. This body of work reveals that sampling of live avian hosts, collection of the lice, and the aggregated distributions of louse infestations pose challenges for assessing louse populations. The number of lice on a bird varies among host taxa, often with host size and social system. Host preening behavior limits louse abundance, depending on bill shape. The small communities of lice (typically one–four species) that live on individual birds show species-specific patterns of abundance,

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Mel’nikov, Yuriy. "Birds of forest ecosystems of Southern Baikal in the conditions of modern climate warming: Dynamics of population density and structure in summer." E3S Web of Conferences 411 (2023): 02069. http://dx.doi.org/10.1051/e3sconf/202341102069.

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On the basis of long-term works (2010-2022), the materials of studying the influence of climate warming on the bird population of forest ecosystems in the summer period are presented. The main indicators of the bird population were studied: population density and species composition. The dynamics of these indicators of the bird population structure and the features of their structure depending on the level of climate change on the ascending branch of the heat-dry phase of the centuries-old climate cycle, close to completion, are considered. The intensity of bird eviction is associated with the

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Matsyura, О. V. "КОМПЛЕКСНА ОЦІНКА ДИНАМІКИ ЧИСЕЛЬНОСТІ УГРУПОВАНЬ КОЛОНІАЛЬНИХ НАВКОЛОВОДНИХ ПТАХІВ (НА ПРИКЛАДІ ДЕЯКИХ ОСТРОВІВ СИВАШУ)". Biological Bulletin of Bogdan Chmelnitskiy Melitopol State Pedagogical University 1, № 3 (2011): 85. http://dx.doi.org/10.15421/20111_38.

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<p>The problem of the mathematical analysis of the number dynamics of the nesting waterbirds for the islands of the south of Ukraine is examined. The algorithm of the evaluation of changes in the number of island birds is proposed. Data of the long-term monitoring of the number of birds were analyzed according to this algorithm. The necessity of the implementation of the statistical indices together with the graphic representation of island birds’ turnover is proved. The trends of population dynamics are determined for the key species. The discussed procedure of the complex evaluation is

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Ranade, Sachin, and Soumya Sundar Chakraborty. "Waterbird count at Narathali waterbody, Buxa Tiger Reserve in northern Bengal for a decade (2009–2019) with a note on raptors." Journal of Threatened Taxa 16, no. 2 (2024): 24752–59. http://dx.doi.org/10.11609/jott.8452.16.2.24752-24759.

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This study presents insights from a comprehensive analysis of bird counts conducted at Narathali waterbody in Buxa Tiger Reserve between 2009 and 2019. Thirteen bird species were monitored, including six wintering duck species and seven resident waterfowl species. The population trends of these birds remained relatively constant throughout the study period. Additionally, the study documented raptor counts and compiled a checklist of waterbirds observed at the waterbody. These findings enhance our understanding of bird population dynamics in this significant habitat and provide valuable informa

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JHA, Kaushalendra Kumar, and Craig R. MCKINLEY. "Composition and Dynamics of Migratory and Resident Avian Population in Wintering Wetlands from Northern India." Notulae Scientia Biologicae 7, no. 1 (2015): 1–15. http://dx.doi.org/10.15835/nsb719484.

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Twelve wetlands occurring in four different ecozones in Uttar Pradesh (UP), India, were selected for studying the winter composition and dynamics of avian populations. Wetland information was collected from office records of the UP Forest department. Bird populations were estimated by transect method and block-in-flock-in-sector method for woodland and aquatic birds, respectively. Across the twelve selected wetlands a total of 486,182 individuals belonging to 161 species of birds on 15,592 ha were recorded during the winter of 2010-11. The data were analyzed to assess the relationship between

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Sakhvon, V. V., and M. E. Nikiforov. "Features of formation bird population structure in Minsk in the time aspect." Proceedings of the National Academy of Sciences of Belarus, Biological Series 66, no. 4 (2021): 412–25. http://dx.doi.org/10.29235/1029-8940-2021-66-4-412-425.

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The structure of bird population of urbanized areas is determined by the diversity of habitats within the city, the diversity of bird species in suburban biotopes, and regional processes of dispersal of birds closely associated with human settlements. The analysis of the dynamics of the breeding bird species richness in Minsk showed that its formation progressed in different ways. All in all, since 1946, 141 bird species have been recorded nesting (including allegedly) in the territory of Minsk.The breeding bird assemblages is dominated by dendrophilous (45.0 % of all species) as well as wetla

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Ruffino, Lise, Diane Zarzoso-Lacoste, and Eric Vidal. "Assessment of invasive rodent impacts on island avifauna: methods, limitations and the way forward." Wildlife Research 42, no. 2 (2015): 185. http://dx.doi.org/10.1071/wr15047.

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Bird conservation is nowadays a strong driving force for prioritising rodent eradications, but robust quantitative estimates of impacts are needed to ensure cost-effectiveness of management operations. Here, we review the published literature to investigate on what methodological basis rodent effects on island bird communities have been evaluated for the past six decades. We then discuss the advantages and limitations of each category of methods for the detection and quantification of impacts, and end with some recommendations on how to strengthen current approaches and extend our knowledge on

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Layton-Matthews, Kate, Michael Griesser, Christophe F. D. Coste, and Arpat Ozgul. "Forest management affects seasonal source-sink dynamics in a territorial, group-living bird." Oecologia 196, no. 2 (2021): 399–412. http://dx.doi.org/10.1007/s00442-021-04935-6.

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AbstractThe persistence of wildlife populations is under threat as a consequence of human activities, which are degrading natural ecosystems. Commercial forestry is the greatest threat to biodiversity in boreal forests. Forestry practices have degraded most available habitat, threatening the persistence of natural populations. Understanding population responses is, therefore, critical for their conservation. Population viability analyses are effective tools to predict population persistence under forestry management. However, quantifying the mechanisms driving population responses is complex a

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Robb, Gillian N., Robbie A. McDonald, Dan E. Chamberlain, S. James Reynolds, Timothy J. E. Harrison, and Stuart Bearhop. "Winter feeding of birds increases productivity in the subsequent breeding season." Biology Letters 4, no. 2 (2008): 220–23. http://dx.doi.org/10.1098/rsbl.2007.0622.

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Supplementary food given to birds can have contemporary effects by reducing the risk of starvation, increasing survival and altering movements and reproductive performance. There is, however, a widely held perception that birds benefit from extra food over winter, but that it is better that they ‘look after themselves’ during breeding. Here we describe a landscape-scale experiment showing for the first time that the effects of increasing food availability only during the winter can be carried over to the subsequent breeding season. Even though food supplementation stopped six weeks prior to br

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Johnston, Alison, Amanda D. Rodewald, Matt Strimas-Mackey, et al. "North American bird declines are greatest where species are most abundant." Science 388, no. 6746 (2025): 532–37. https://doi.org/10.1126/science.adn4381.

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Efforts to address declines of North American birds have been constrained by limited availability of fine-scale information about population change. By using participatory science data from eBird, we estimated continental population change and relative abundance at 27-kilometer resolution for 495 bird species from 2007 to 2021. Results revealed high and previously undetected spatial heterogeneity in trends; although 75% of species were declining, 97% of species showed separate areas of significantly increasing and decreasing populations. Populations tended to decline most steeply in stronghold

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Odintseva, A. A., and O. A. Odintsev. "Seasonal Dynamics of the Bird Population of Omsk City." Biology Bulletin 48, no. 7 (2021): 1030–40. http://dx.doi.org/10.1134/s1062359021070220.

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Sæther, Bernt-Erik, Russell Lande, Steinar Engen, et al. "Generation time and temporal scaling of bird population dynamics." Nature 436, no. 7047 (2005): 99–102. http://dx.doi.org/10.1038/nature03666.

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Rąkowski, Grzegorz, Krzysztof Czarnocki, and Joanna Ukalska. "Breeding avifauna of mature forest stands in the Borki Forest and its dynamics at the turn of the 21st century." Forest Research Papers 77, no. 3 (2016): 239–55. http://dx.doi.org/10.1515/frp-2016-0026.

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Abstract The composition and structure of the breeding bird community in the Borki Forest in north-eastern Poland were investigated during two separate periods: 1994–1996 and 2012–2014. Bird censuses were carried out in three plots located in mature oak-hornbeam, ash-alder and mixed coniferous forest stands. A standard combined mapping technique for estimating the number of breeding birds was applied. A total of 74 bird species bred at least once within any plot during 1994–1996 or 2012–2014. The structure of the bird assemblages on particular plots displayed a high degree of similarity, excee

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Grzegorz, Rąkowski, Czarnocki Krzysztof, and Ukalska Joanna. "Breeding avifauna of mature forest stands in the Borki Forest and its dynamics at the turn of the 21st century." Lesne Prace Badawcze / Forest Research Papers 77, no. 3 (2016): 239–55. https://doi.org/10.1515/frp-2016-0026.

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The composition and structure of the breeding bird community in the Borki Forest in north-eastern Poland were investigated during two separate periods: 1994–1996 and 2012–2014. Bird censuses were carried out in three plots located in mature oak-hornbeam, ash-alder and mixed coniferous forest stands. A standard combined mapping technique for estimating the number of breeding birds was applied. A total of 74 bird species bred at least once within any plot during 1994–1996 or 2012–2014. The structure of the bird assemblages on particular plots displayed a high degree of si

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Ananin, A. A., and I. A. Aiurzanaeva. "Dependence of floodplain birds’ dynamics on the spring flood height and duration in the middle Ob River." IOP Conference Series: Earth and Environmental Science 908, no. 1 (2021): 012012. http://dx.doi.org/10.1088/1755-1315/908/1/012012.

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Abstract Inter-annual variations in the total number of birds in floodplains of rivers are mainly associated with their flooding. The minimum population density during the nesting period was in a year with high and prolonged spring floods. The restoration and maximum development of shrubs took place with a significant simultaneous increase in the abundance of birds in subsequent years. Drying and simplification of vegetation cover were noted in all floodplain bird habitats during low-water periods. This process was accompanied by a decline in the number of birds. We identified four groups of b

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Sorokina, Julia Alexandrovna, and Elena Evgenievna Boryakova. "Recovery of the bird population within pine forests after the catastrophic fires in 2010." Samara Journal of Science 6, no. 4 (2017): 66–71. http://dx.doi.org/10.17816/snv201764113.

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Process of bird population restoration after fires was investigated in two protected areas in the Volga river basin in central Russia. Anthropogenic pressure in Kerzhensky and Mordovsky nature reserves is very low, it made possible to discover some characteristics of the process of bird population restoration in reference environment. The counts were carried out both in the affected areas of the reserves, and in unaffected parts. The studied area was in its five year after the fire. Dynamics of post fire bird population restoration and its dependence on both the age and history of the original

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Saurola, P., and C. M. Francis. "Estimating population dynamics and dispersal distances of owls from nationally coordinated ringing data in Finland." Animal Biodiversity and Conservation 27, no. 1 (2004): 403–15. http://dx.doi.org/10.32800/abc.2004.27.0403.

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Amateur bird ringers can collect data at a geographic and temporal scale that is rarely possible with professional field crews, thus allowing truly national analyses of population dynamics and dispersal. Since the early 1970s, bird ringers in Finland have been strongly encouraged to focus on birds of prey, especially cavity–nesting owls. In addition to ringing nestlings and adults, ringers also provide data on population trends and breeding success. The resultant data indicate that numbers of breeding pairs fluctuated with the 3–4 year microtine cycle, but without any long–term trend. Mean pro

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Sebaio, Fabiane, Érika Martins Braga, Felipe Branquinho, Alan Fecchio, and Miguel Ângelo Marini. "Blood parasites in passerine birds from the Brazilian Atlantic Forest." Revista Brasileira de Parasitologia Veterinária 21, no. 1 (2012): 7–15. http://dx.doi.org/10.1590/s1984-29612012000100003.

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Parasites may lead bird species to extinction, affect host temporal and spatial population dynamics, alter community structure and alter individuals’ social status. We evaluated blood parasite prevalence and intensity according to bird families and species, among 925 birds that were caught in 2000 and 2001, in the Atlantic Forest in the State of Minas Gerais, Brazil. We applied Giemsa staining to thin blood smears, to detect blood parasites. The birds (n = 15.8%) in 11 families, were infected by at least one parasite genus, especially Muscicapidae (28.3%) and Conopophagidae (25%). Among the 14

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Mel’nikov, Yu I. "Modern climate warming, dynamics and development of new plots of bird areas as population adaptation to anthropogenic landscapes of Eastern Siberia." IOP Conference Series: Earth and Environmental Science 1010, no. 1 (2022): 012136. http://dx.doi.org/10.1088/1755-1315/1010/1/012136.

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Abstract The article discusses the features of the formation of new plots of the areas for birds in the anthropogenic landscapes of Eastern Siberia under the conditions of modern climate warming. It is emphasized that at the initial stages of this process, the warming was not intense and hardly noticeable (the beginning of the 19th - the first half of the 20th centuries). However, already at that time there was a clear trend towards the expansion of bird areas to the north and east. This process has progressed as the trend towards climate warming intensifies. In the second half of the 20th cen

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Park, Jae-Hoon, Ji-Won Park, Yoon-Seo Kim, et al. "Early Exotic Vegetation Development Is Affected by Vine Plants and Bird Activity at Rapidly Exposed Floodplains in South Korea." Biology 12, no. 5 (2023): 696. http://dx.doi.org/10.3390/biology12050696.

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For the study on the relationships between the seed dispersal of exotic plants and bird population, flora, avifauna, vegetation patches, and the dynamics of seed banks were investigated in and around the exposed floodplains of the large rivers, and the causes of exotic vegetation development were determined with respect to plant life form, bird population characteristics, and landscape using multivariate analysis. The number of dominant exotic plant species observed in exposed areas was higher than that observed in an abandoned field and paddy field undergoing secondary succession. Additionall

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Pârâu, Liviu G., Diederik Strubbe, Emiliano Mori, et al. "Rose-ringed Parakeet Psittacula krameri Populations and Numbers in Europe: A Complete Overview." Open Ornithology Journal 9, no. 1 (2016): 1–13. http://dx.doi.org/10.2174/1874453201609010001.

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Background: Alien species are one of the major causes contributing to biodiversity loss. In Europe, over 340 alien bird species have been recorded in the wild, of which 74 are established. Among 12 established alien parrot species in Europe, the Rose-ringed Parakeet (RRP) Psittacula krameri is the most abundant and widespread. Objective: Although one of the best documented alien vertebrates in Europe, historical and current datasets on RRP invasion success and demography have not been systematically collated and analysed. This paper therefore aims to bring together, verify and make available t

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Thompson, D. B. A., D. J. Curtis, and J. C. Smyth. "Patterns of association between birds and invertebrates in the Clyde Estuary." Proceedings of the Royal Society of Edinburgh. Section B. Biological Sciences 90 (1986): 185–201. http://dx.doi.org/10.1017/s026972700000498x.

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SynopsisRelationships between feeding ecology, population dynamics and conservation of estuarine shorebirds are becoming better understood mainly as a result of detailed long-term studies of birds in the northwest European estuaries most vulnerable to industrial and agricultural developments. Until five years ago the tidal flats of the Clyde Estuary held internationally and nationally important populations of ducks (Anatinae) and waders (Charadrii). To understand the reasons for changes in bird distribution it is necessary to know more about the factors which determine distribution. In this pa

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Lawson, Becki, Robert A. Robinson, Mike P. Toms, Kate Risely, Susan MacDonald, and Andrew A. Cunningham. "Health hazards to wild birds and risk factors associated with anthropogenic food provisioning." Philosophical Transactions of the Royal Society B: Biological Sciences 373, no. 1745 (2018): 20170091. http://dx.doi.org/10.1098/rstb.2017.0091.

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Provision of supplementary food for wild birds at garden feeding stations is a common, large-scale and year-round practice in multiple countries including Great Britain (GB). While these additional dietary resources can benefit wildlife, there is a concomitant risk of disease transmission, particularly when birds repeatedly congregate in the same place at high densities and through interactions of species that would not normally associate in close proximity. Citizen science schemes recording garden birds are popular and can integrate disease surveillance with population monitoring, offering a

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Saini, Laxman Singh, B. L. Jat, Akhter Hussain, Ram Narayan Sharma, and Sharad Kumar Meena. "Influence of Abiotic Factors on Population Dynamics of Sucking Insect Pests and their Natural Enemies in Brinjal." Annals of Arid Zone 64, no. 1 (2025): 69–77. https://doi.org/10.56093/aaz.v64i1.153361.

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The study investigated the population dynamics of whitefly, leaf hopper, lady bird beetle and spider in kharif, 2022 and 2023, revealing distinct patterns and correlations with weather parameters. Whitefly infestations started in last week of August with initial populations of 6.6 and 7.84 per 3 leaves, peaked at 31.08 and 34.76 per 3 leaves in early October. Leaf hopper populations started in last week of August with 5.24 and 5.96 per 3 leaves, peaked at 25.48 and 28.12 per 3 leaves in last week of September and early October. Lady bird beetles appeared in early September with initial populat

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Wheeler, Michael E., Jeb A. Barzen, Shawn M. Crimmins, and Timothy R. Van Deelen. "Effects of territorial status and life history on Sandhill Crane (Antigone canadensis) population dynamics in south-central Wisconsin, USA." Canadian Journal of Zoology 97, no. 2 (2019): 112–20. http://dx.doi.org/10.1139/cjz-2018-0135.

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Population growth rate in long-lived bird species is often most sensitive to changes in adult survival. Sandhill Cranes (Antigone canadensis (Linnaeus, 1758)) have long life spans, small broods, and delayed first reproduction. Only territorial adult Sandhill Cranes participate in breeding, and territory acquisition reflects the interplay between the availability of suitable territories and the variation in mortality of adult birds occupying those territories. We estimated vital rates of a population at equilibrium using long-term resightings data (2000–2014; n = 451 marked individuals) in a mu

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Payevsky, V. A., and A. P. Shapoval. "Three million ringed birds on the Curonian Spit (Baltic area) and ten thousand results on their migration routes: a brief overview, statistics and examples." Proceedings of the Zoological Institute RAS 329, no. 2 (2025): 77–89. https://doi.org/10.31610/trudyzin/2025.329.2.77.

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One of the mass migratory routes of birds in Europe is the White Sea-Baltic migration route, which runs through the eastern Baltic area. In order to study bird migration by ringing, Vogelwarte Rossitten, the world’s first ornithological station, was founded on the Curonian Spit, the work of which was continued by the Rybachy Biological Station of the Zoological Institute of the Russian Academy of Sciences. The 3,214,217 birds of 202 species were ringed here during 1956–2020, and 10,165 reports of distant ring recoveries from 99 bird species were received. The paper provides a brief overview of

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Vögeli, Matthias, Paola Laiolo, David Serrano, and José L. Tella. "Predation of experimental nests is linked to local population dynamics in a fragmented bird population." Biology Letters 7, no. 6 (2011): 954–57. http://dx.doi.org/10.1098/rsbl.2011.0241.

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Artificial nest experiments (ANEs) are widely used to obtain proxies of natural nest predation for testing a variety of hypotheses, from those dealing with variation in life-history strategies to those assessing the effects of habitat fragmentation on the persistence of bird populations. However, their applicability to real-world scenarios has been criticized owing to the many potential biases in comparing predation rates of artificial and natural nests. Here, we aimed to test the validity of estimates of ANEs using a novel approach. We related predation rates on artificial nests to population

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Barrantes, Gilbert, and Luis Sandoval. "Effect of El Niño and La Niña on abundance of frugivorous and nectarivorous terrestrial birds in three tropical forests." Revista de Biología Tropical 67, no. 2SUPL (2019): S282—S297. http://dx.doi.org/10.15517/rbt.v67i2supl.37252.

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El Niño and La Niña climatic oscillations have dramatic effects on population dynamics and community structure of different animals. For marine birds, El Niño phenomenon drastically increases their mortality and reduces their reproductive success. In terrestrial ecosystems, the lack of long-term longitudinal data limits our understanding of the impact of El Niño and La Niña on bird populations and communities. We analyzed changes in abundance of frugivorous (large, medium, and small) and nectarivorous birds on three tropical forest types (lowland, premontane and montane) during El Niño, La Niñ

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Rushing, Clark S., Thomas B. Ryder, and Peter P. Marra. "Quantifying drivers of population dynamics for a migratory bird throughout the annual cycle." Proceedings of the Royal Society B: Biological Sciences 283, no. 1823 (2016): 20152846. http://dx.doi.org/10.1098/rspb.2015.2846.

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Worldwide, migratory species are undergoing rapid declines but understanding the factors driving these declines is hindered by missing information about migratory connectivity and the lack of data to quantify environmental processes across the annual cycle. Here, we combined range-wide information about migratory connectivity with global remote-sensing data to quantify the relative importance of breeding and non-breeding environmental processes to persistent long-term population declines of a migratory songbird, the wood thrush ( Hylocichla mustelina ). Consistent with theoretical predictions

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Hemmings, Nicola, and Simon Evans. "Unhatched eggs represent the invisible fraction in two wild bird populations." Biology Letters 16, no. 1 (2020): 20190763. http://dx.doi.org/10.1098/rsbl.2019.0763.

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Prenatal mortality is typically overlooked in population studies, which biases evolutionary inference by confounding selection and inheritance. Birds represent an opportunity to include this ‘invisible fraction’ if each egg contains a zygote, but whether hatching failure is caused by fertilization failure versus prenatal mortality is largely unknown. We quantified fertilization failure rates in two bird species that are popular systems for studying evolutionary dynamics and found that overwhelming majorities (99.9%) of laid eggs were fertilized. These systems thus present opportunities to elim

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Ims, Rolf A., John-André Henden, Anders V. Thingnes, and Siw T. Killengreen. "Indirect food web interactions mediated by predator–rodent dynamics: relative roles of lemmings and voles." Biology Letters 9, no. 6 (2013): 20130802. http://dx.doi.org/10.1098/rsbl.2013.0802.

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Production cycles in birds are proposed as prime cases of indirect interactions in food webs. They are thought to be driven by predators switching from rodents to bird nests in the crash phase of rodent population cycles. Although rodent cycles are geographically widespread and found in different rodent taxa, bird production cycles appear to be most profound in the high Arctic where lemmings dominate. We hypothesized that this may be due to arctic lemmings inducing stronger predator responses than boreal voles. We tested this hypothesis by estimating predation rates in dummy bird nests during

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Athrey, Giridhar, Nikolas Faust, Anne-Sophie Charlotte Hieke, and I. Lehr Brisbin. "Effective population sizes and adaptive genetic variation in a captive bird population." PeerJ 6 (October 18, 2018): e5803. http://dx.doi.org/10.7717/peerj.5803.

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Captive populations are considered a key component of ex situ conservation programs. Research on multiple taxa has shown the differential success of maintaining demographic versus genetic stability and viability in captive populations. In typical captive populations, usually founded by few or related individuals, genetic diversity can be lost and inbreeding can accumulate rapidly, calling into question their ultimate utility for release into the wild. Furthermore, domestication selection for survival in captive conditions is another concern. Therefore, it is crucial to understand the dynamics

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Knape, Jonas, and Perry de Valpine. "Effects of weather and climate on the dynamics of animal population time series." Proceedings of the Royal Society B: Biological Sciences 278, no. 1708 (2010): 985–92. http://dx.doi.org/10.1098/rspb.2010.1333.

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Weather is one of the most basic factors impacting animal populations, but the typical strength of such impacts on population dynamics is unknown. We incorporate weather and climate index data into analysis of 492 time series of mammals, birds and insects from the global population dynamics database. A conundrum is that a multitude of weather data may a priori be considered potentially important and hence present a risk of statistical over-fitting. We find that model selection or averaging alone could spuriously indicate that weather provides strong improvements to short-term population predic

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Wang, Qian, and Qianjin Cao. "An Exploration of the Genetic Dynamics of Submerged Ceratophyllum demersum in a Freshwater Lake Under Conservation." Diversity 17, no. 6 (2025): 413. https://doi.org/10.3390/d17060413.

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Although the effects of human disturbance on population genetic variation in plants have been widely studied, little attention has been paid to the impact of environmental changes on genetic dynamics after the implementation of conservation measures. Previously, freshwater Caohai Lake, famous for its abundant aquatic plants and birds, was strongly disturbed by tourism and other human activities; however, strict protective measures have been implemented since 2019. Therefore, the lake provides a suitable natural sampling ecosystem for investigating genetic variation changes following the implem

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GAO, SHUJING, YUMIN DING, and JIANPING XIE. "ROLE OF DISEASE PROPAGATION IN MIGRATORY BIRD POPULATION." International Journal of Biomathematics 05, no. 03 (2012): 1260002. http://dx.doi.org/10.1142/s1793524512600029.

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Chatterjee considered a predator–prey model with avian migration in the migration prey population [S. Chatterjee, Alternative prey source coupled with prey recovery enhance stability between migratory prey and their predator in the presence of disease, Nonlinear Anal. Real World Appl. 11 (2010) 4415–4430]. In this paper, we modify and analyze the model by taking time dependent parameters and the general functional response into consideration. The conditions for the persistence of the system and the extinction of the disease are obtained. The global attractivity of the system is also studied. B

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ROMANOV, A. A., E. A. KOBLIK, and Y. A. REDKIN. "SPATIAL ORGANIZATION OF BIRD POPULATION OF THE URUP AND ITURUP ISLANDS (KURIL ISLANDS)." Lomonosov Geography Journal 79, no. 1 (2024) (2024): 103–13. http://dx.doi.org/10.55959/msu0579-9414.5.79.1.8.

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The ecological and geographical differentiation of the bird population at 18 sites of the Urup and Iturup islands was analyzed. The method of route accounting was applied. A total of 109 species were recorded, 62 of them on both islands. The coefficient of faunal commonality between the terrestrial habitats of the islands is 72%, and between the coastal-marine - 71%. The coefficient of similarity of the bird population between the land habitats of the islands is 36%, and between the coastal-marine - 29%. The values of bird population density on the islands are close both between terrestrial (6

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Belder, Donna J., Jennifer C. Pierson, Karen Ikin, and David B. Lindenmayer. "Beyond pattern to process: current themes and future directions for the conservation of woodland birds through restoration plantings." Wildlife Research 45, no. 6 (2018): 473. http://dx.doi.org/10.1071/wr17156.

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Habitat loss as a result of land conversion for agriculture is a leading cause of global biodiversity loss and altered ecosystem processes. Restoration plantings are an increasingly common strategy to address habitat loss in fragmented agricultural landscapes. However, the capacity of restoration plantings to support reproducing populations of native plants and animals is rarely measured or monitored. This review focuses on avifaunal response to revegetation in Australian temperate woodlands, one of the world’s most heavily altered biomes. Woodland birds are a species assemblage of conservatio

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Stoilovskyi, V. P., and D. A. Kivganov. "SPECIES STRUCTURE AND NUMBER OF BIRDS OF THE LOWER TYLIGUL ESTUARY IN THE SPRING OF 2019–2023." Odesa National University Herald. Biology 29, no. 1(54) (2024): 50–64. http://dx.doi.org/10.18524/2077-1746.2024.1(54).309038.

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The aim of the work is to assess the dynamic characteristics of hydrophilic birds in the spring period of 2019–2023. Methods. In the open area, bird counts were carried out from a car with numerous stops to inspect territories and water areas using 10×, 12× binoculars and a 30–60× telescope. Observations were conducted on foot in areas with tree-shrub vegetation and along small water bodies. Registration of species was carried out both by visual observations and by the sounds of birds. Main results. 99 bird species of 13 orders were registered. Representatives of theorders Anseriformes, Gruifo

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Yusuf, Amina. "Impact of Urban Expansion on Migratory Birds in the Lagos Wetlands: Breeding Habits and Population Dynamics." Studies in Social Science & Humanities 3, no. 5 (2024): 1–5. http://dx.doi.org/10.56397/sssh.2024.05.01.

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This research delves into the complex interactions between urban expansion and migratory bird populations in the Lagos wetlands, specifically examining how changes in urban landscapes influence breeding habits and population dynamics. The rapid and extensive urbanization in Lagos has resulted in considerable habitat fragmentation and environmental degradation, leading to significant disruptions in the ecological functions vital for the sustenance of migratory bird species. This study conducts a thorough analysis of existing conservation measures, assessing their effectiveness and identifying g

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Barrett, Kyle, Christina M. Romagosa, and Matthew I. Williams. "Long-Term Bird Assemblage Trends in Areas of High and Low Human Population Density." Research Letters in Ecology 2008 (2008): 1–4. http://dx.doi.org/10.1155/2008/202606.

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Urban areas are expanding globally, and the impact of high human population density (HHPD) on bird species richness remains unresolved. Studies primarily focus on species richness along an urban-to-rural gradient; however, some studies have analyzed larger-scale patterns and found results that contrast with those obtained at smaller scales. To move the discussion beyond static species richness patterns, we analyzed the effect of HHPD on bird assemblage dynamics (year-to-year extinction probability, turnover, changes in species richness) across the United States over a 25-year period. We found

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Godinez-Alvarez, Hector, Alfonso Valiente-Banuet, and Alberto Rojas-Martinez. "The Role of Seed Dispersers in the Population Dynamics of the Columnar Cactus Neobuxbaumia tetetzo." Ecology 83, no. 9 (2002): 2617. https://doi.org/10.5281/zenodo.14818746.

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(Uploaded by Plazi for the Bat Literature Project) We examined the effect of frugivorous bats and birds on the population dynamics of the giant columnar cactus Neobuxbaumia tetetzo in the Tehuacdn Valley, Mexico. Because successful seedling establishment occurs only beneath the canopies of shrubs and trees, we hypothesized that seed dispersal is a key process in the maintenance of its populations. We determined the dispersal effectiveness of different frugivores, considering the quantity and quality components of seed dispersal. We also evaluated the potential effects of each frugivore species

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Tripet, Frédéric, and Heinz Richner. "DENSITY-DEPENDENT PROCESSES IN THE POPULATION DYNAMICS OF A BIRD ECTOPARASITECERATOPHYLLUS GALLINAE." Ecology 80, no. 4 (1999): 1267–77. http://dx.doi.org/10.1890/0012-9658(1999)080[1267:ddpitp]2.0.co;2.

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Camacho, Carlos, Jesús Martínez-Padilla, David Canal, and Jaime Potti. "Long-term dynamics of phenotype-dependent dispersal within a wild bird population." Behavioral Ecology 30, no. 2 (2019): 548–56. http://dx.doi.org/10.1093/beheco/ary195.

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Mougeot, F., S. M. Redpath, F. Leckie, and P. J. Hudson. "The effect of aggressiveness on the population dynamics of a territorial bird." Nature 421, no. 6924 (2003): 737–39. http://dx.doi.org/10.1038/nature01395.

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